MagickCore 6.9.13
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/script/license.php %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44␌
45/*
46 Include declarations.
47*/
48#include "magick/studio.h"
49#include "magick/annotate.h"
50#include "magick/artifact.h"
51#include "magick/blob.h"
52#include "magick/cache.h"
53#include "magick/cache-private.h"
54#include "magick/cache-view.h"
55#include "magick/channel.h"
56#include "magick/color.h"
57#include "magick/color-private.h"
58#include "magick/colorspace.h"
59#include "magick/colorspace-private.h"
60#include "magick/composite.h"
61#include "magick/composite-private.h"
62#include "magick/constitute.h"
63#include "magick/draw.h"
64#include "magick/draw-private.h"
65#include "magick/enhance.h"
66#include "magick/exception.h"
67#include "magick/exception-private.h"
68#include "magick/gem.h"
69#include "magick/geometry.h"
70#include "magick/image-private.h"
71#include "magick/list.h"
72#include "magick/log.h"
73#include "magick/magick.h"
74#include "magick/memory-private.h"
75#include "magick/monitor.h"
76#include "magick/monitor-private.h"
77#include "magick/option.h"
78#include "magick/paint.h"
79#include "magick/pixel-accessor.h"
80#include "magick/pixel-private.h"
81#include "magick/property.h"
82#include "magick/resample.h"
83#include "magick/resample-private.h"
84#include "magick/resource_.h"
85#include "magick/splay-tree.h"
86#include "magick/string_.h"
87#include "magick/string-private.h"
88#include "magick/thread-private.h"
89#include "magick/token.h"
90#include "magick/transform.h"
91#include "magick/utility.h"
92␌
93/*
94 Define declarations.
95*/
96#define AntialiasThreshold (1.0/3.0)
97#define BezierQuantum 200
98#define PrimitiveExtentPad 4296.0
99#define MaxBezierCoordinates 67108864
100#define ThrowPointExpectedException(image,token) \
101{ \
102 (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
103 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
104 status=MagickFalse; \
105 break; \
106}
107␌
108/*
109 Typedef declarations.
110*/
111typedef struct _EdgeInfo
112{
113 SegmentInfo
114 bounds;
115
116 double
117 scanline;
118
119 PointInfo
120 *points;
121
122 size_t
123 number_points;
124
125 ssize_t
126 direction;
127
128 MagickBooleanType
129 ghostline;
130
131 size_t
132 highwater;
133} EdgeInfo;
134
135typedef struct _ElementInfo
136{
137 double
138 cx,
139 cy,
140 major,
141 minor,
142 angle;
143} ElementInfo;
144
145typedef struct _MVGInfo
146{
147 PrimitiveInfo
148 **primitive_info;
149
150 size_t
151 *extent;
152
153 ssize_t
154 offset;
155
156 PointInfo
157 point;
158
159 ExceptionInfo
160 *exception;
161} MVGInfo;
162
163typedef struct _PolygonInfo
164{
165 EdgeInfo
166 *edges;
167
168 size_t
169 number_edges;
170} PolygonInfo;
171
172typedef enum
173{
174 MoveToCode,
175 OpenCode,
176 GhostlineCode,
177 LineToCode,
178 EndCode
179} PathInfoCode;
180
181typedef struct _PathInfo
182{
183 PointInfo
184 point;
185
186 PathInfoCode
187 code;
188} PathInfo;
189␌
190/*
191 Forward declarations.
192*/
193static Image
194 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
195 ExceptionInfo *);
196
197static MagickBooleanType
198 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
199 RenderMVGContent(Image *,const DrawInfo *,const size_t),
200 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
201 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
202 const double,const MagickBooleanType,const MagickBooleanType),
203 TraceBezier(MVGInfo *,const size_t),
204 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
205 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
207 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
208 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
209 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
210
211static PrimitiveInfo
212 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
213
214static ssize_t
215 TracePath(Image *,MVGInfo *,const char *);
216␌
217/*
218%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219% %
220% %
221% %
222% A c q u i r e D r a w I n f o %
223% %
224% %
225% %
226%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
227%
228% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
229%
230% The format of the AcquireDrawInfo method is:
231%
232% DrawInfo *AcquireDrawInfo(void)
233%
234*/
235MagickExport DrawInfo *AcquireDrawInfo(void)
236{
237 DrawInfo
238 *draw_info;
239
240 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
241 GetDrawInfo((ImageInfo *) NULL,draw_info);
242 return(draw_info);
243}
244␌
245/*
246%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247% %
248% %
249% %
250% C l o n e D r a w I n f o %
251% %
252% %
253% %
254%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255%
256% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
257% is specified, a new DrawInfo structure is created initialized to default
258% values.
259%
260% The format of the CloneDrawInfo method is:
261%
262% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
263% const DrawInfo *draw_info)
264%
265% A description of each parameter follows:
266%
267% o image_info: the image info.
268%
269% o draw_info: the draw info.
270%
271*/
272MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
273 const DrawInfo *draw_info)
274{
275 DrawInfo
276 *clone_info;
277
278 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279 GetDrawInfo(image_info,clone_info);
280 if (draw_info == (DrawInfo *) NULL)
281 return(clone_info);
282 if (draw_info->id != (char *) NULL)
283 (void) CloneString(&clone_info->id,draw_info->id);
284 if (draw_info->primitive != (char *) NULL)
285 (void) CloneString(&clone_info->primitive,draw_info->primitive);
286 if (draw_info->geometry != (char *) NULL)
287 (void) CloneString(&clone_info->geometry,draw_info->geometry);
288 clone_info->compliance=draw_info->compliance;
289 clone_info->viewbox=draw_info->viewbox;
290 clone_info->affine=draw_info->affine;
291 clone_info->gravity=draw_info->gravity;
292 clone_info->fill=draw_info->fill;
293 clone_info->stroke=draw_info->stroke;
294 clone_info->stroke_width=draw_info->stroke_width;
295 if (draw_info->fill_pattern != (Image *) NULL)
296 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
297 &draw_info->fill_pattern->exception);
298 else
299 if (draw_info->tile != (Image *) NULL)
300 clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
301 &draw_info->tile->exception);
302 clone_info->tile=NewImageList(); /* tile is deprecated */
303 if (draw_info->stroke_pattern != (Image *) NULL)
304 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
305 MagickTrue,&draw_info->stroke_pattern->exception);
306 clone_info->stroke_antialias=draw_info->stroke_antialias;
307 clone_info->text_antialias=draw_info->text_antialias;
308 clone_info->fill_rule=draw_info->fill_rule;
309 clone_info->linecap=draw_info->linecap;
310 clone_info->linejoin=draw_info->linejoin;
311 clone_info->miterlimit=draw_info->miterlimit;
312 clone_info->dash_offset=draw_info->dash_offset;
313 clone_info->decorate=draw_info->decorate;
314 clone_info->compose=draw_info->compose;
315 if (draw_info->text != (char *) NULL)
316 (void) CloneString(&clone_info->text,draw_info->text);
317 if (draw_info->font != (char *) NULL)
318 (void) CloneString(&clone_info->font,draw_info->font);
319 if (draw_info->metrics != (char *) NULL)
320 (void) CloneString(&clone_info->metrics,draw_info->metrics);
321 if (draw_info->family != (char *) NULL)
322 (void) CloneString(&clone_info->family,draw_info->family);
323 clone_info->style=draw_info->style;
324 clone_info->stretch=draw_info->stretch;
325 clone_info->weight=draw_info->weight;
326 if (draw_info->encoding != (char *) NULL)
327 (void) CloneString(&clone_info->encoding,draw_info->encoding);
328 clone_info->pointsize=draw_info->pointsize;
329 clone_info->kerning=draw_info->kerning;
330 clone_info->interline_spacing=draw_info->interline_spacing;
331 clone_info->interword_spacing=draw_info->interword_spacing;
332 clone_info->direction=draw_info->direction;
333 if (draw_info->density != (char *) NULL)
334 (void) CloneString(&clone_info->density,draw_info->density);
335 clone_info->align=draw_info->align;
336 clone_info->undercolor=draw_info->undercolor;
337 clone_info->border_color=draw_info->border_color;
338 if (draw_info->server_name != (char *) NULL)
339 (void) CloneString(&clone_info->server_name,draw_info->server_name);
340 if (draw_info->dash_pattern != (double *) NULL)
341 {
342 ssize_t
343 x;
344
345 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
346 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
347 sizeof(*clone_info->dash_pattern));
348 if (clone_info->dash_pattern == (double *) NULL)
349 ThrowFatalException(ResourceLimitFatalError,
350 "UnableToAllocateDashPattern");
351 (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
352 sizeof(*clone_info->dash_pattern));
353 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
354 (x+1)*sizeof(*clone_info->dash_pattern));
355 }
356 clone_info->gradient=draw_info->gradient;
357 if (draw_info->gradient.stops != (StopInfo *) NULL)
358 {
359 size_t
360 number_stops;
361
362 number_stops=clone_info->gradient.number_stops;
363 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
364 number_stops,sizeof(*clone_info->gradient.stops));
365 if (clone_info->gradient.stops == (StopInfo *) NULL)
366 ThrowFatalException(ResourceLimitFatalError,
367 "UnableToAllocateDashPattern");
368 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
369 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
370 }
371 clone_info->bounds=draw_info->bounds;
372 clone_info->fill_opacity=draw_info->fill_opacity;
373 clone_info->stroke_opacity=draw_info->stroke_opacity;
374 clone_info->element_reference=draw_info->element_reference;
375 clone_info->clip_path=draw_info->clip_path;
376 clone_info->clip_units=draw_info->clip_units;
377 if (draw_info->clip_mask != (char *) NULL)
378 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
379 if (draw_info->clipping_mask != (Image *) NULL)
380 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
381 MagickTrue,&draw_info->clipping_mask->exception);
382 if (draw_info->composite_mask != (Image *) NULL)
383 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
384 MagickTrue,&draw_info->composite_mask->exception);
385 clone_info->render=draw_info->render;
386 clone_info->debug=draw_info->debug;
387 return(clone_info);
388}
389␌
390/*
391%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
392% %
393% %
394% %
395+ C o n v e r t P a t h T o P o l y g o n %
396% %
397% %
398% %
399%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
400%
401% ConvertPathToPolygon() converts a path to the more efficient sorted
402% rendering form.
403%
404% The format of the ConvertPathToPolygon method is:
405%
406% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
407% ExceptionInfo *exception)
408%
409% A description of each parameter follows:
410%
411% o ConvertPathToPolygon() returns the path in a more efficient sorted
412% rendering form of type PolygonInfo.
413%
414% o draw_info: Specifies a pointer to an DrawInfo structure.
415%
416% o path_info: Specifies a pointer to an PathInfo structure.
417%
418% o exception: return any errors or warnings in this structure.
419%
420*/
421
422static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
423{
424 ssize_t
425 i;
426
427 if (polygon_info->edges != (EdgeInfo *) NULL)
428 {
429 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
430 if (polygon_info->edges[i].points != (PointInfo *) NULL)
431 polygon_info->edges[i].points=(PointInfo *)
432 RelinquishMagickMemory(polygon_info->edges[i].points);
433 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
434 polygon_info->edges);
435 }
436 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
437}
438
439#if defined(__cplusplus) || defined(c_plusplus)
440extern "C" {
441#endif
442
443static int DrawCompareEdges(const void *p_edge,const void *q_edge)
444{
445#define DrawCompareEdge(p,q) \
446{ \
447 if (((p)-(q)) < 0.0) \
448 return(-1); \
449 if (((p)-(q)) > 0.0) \
450 return(1); \
451}
452
453 const PointInfo
454 *p,
455 *q;
456
457 /*
458 Edge sorting for right-handed coordinate system.
459 */
460 p=((const EdgeInfo *) p_edge)->points;
461 q=((const EdgeInfo *) q_edge)->points;
462 DrawCompareEdge(p[0].y,q[0].y);
463 DrawCompareEdge(p[0].x,q[0].x);
464 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
465 (q[1].x-q[0].x));
466 DrawCompareEdge(p[1].y,q[1].y);
467 DrawCompareEdge(p[1].x,q[1].x);
468 return(0);
469}
470
471#if defined(__cplusplus) || defined(c_plusplus)
472}
473#endif
474
475static void LogPolygonInfo(const PolygonInfo *polygon_info)
476{
477 EdgeInfo
478 *p;
479
480 ssize_t
481 i,
482 j;
483
484 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
485 p=polygon_info->edges;
486 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
487 {
488 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
489 (double) i);
490 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
491 p->direction != MagickFalse ? "down" : "up");
492 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
493 p->ghostline != MagickFalse ? "transparent" : "opaque");
494 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
495 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
496 p->bounds.x2,p->bounds.y2);
497 for (j=0; j < (ssize_t) p->number_points; j++)
498 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
499 p->points[j].x,p->points[j].y);
500 p++;
501 }
502 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
503}
504
505static void ReversePoints(PointInfo *points,const size_t number_points)
506{
507 PointInfo
508 point;
509
510 ssize_t
511 i;
512
513 for (i=0; i < (ssize_t) (number_points >> 1); i++)
514 {
515 point=points[i];
516 points[i]=points[number_points-(i+1)];
517 points[number_points-(i+1)]=point;
518 }
519}
520
521static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
522 ExceptionInfo *exception)
523{
524 long
525 direction,
526 next_direction;
527
528 PointInfo
529 point,
530 *points;
531
532 PolygonInfo
533 *polygon_info;
534
535 SegmentInfo
536 bounds;
537
538 ssize_t
539 i,
540 n;
541
542 MagickBooleanType
543 ghostline;
544
545 size_t
546 edge,
547 number_edges,
548 number_points;
549
550 /*
551 Convert a path to the more efficient sorted rendering form.
552 */
553 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
554 if (polygon_info == (PolygonInfo *) NULL)
555 {
556 (void) ThrowMagickException(exception,GetMagickModule(),
557 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
558 return((PolygonInfo *) NULL);
559 }
560 number_edges=16;
561 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
562 sizeof(*polygon_info->edges));
563 if (polygon_info->edges == (EdgeInfo *) NULL)
564 {
565 (void) ThrowMagickException(exception,GetMagickModule(),
566 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
567 return(DestroyPolygonInfo(polygon_info));
568 }
569 (void) memset(polygon_info->edges,0,number_edges*
570 sizeof(*polygon_info->edges));
571 direction=0;
572 edge=0;
573 ghostline=MagickFalse;
574 n=0;
575 number_points=0;
576 points=(PointInfo *) NULL;
577 (void) memset(&point,0,sizeof(point));
578 (void) memset(&bounds,0,sizeof(bounds));
579 polygon_info->edges[edge].number_points=(size_t) n;
580 polygon_info->edges[edge].scanline=0.0;
581 polygon_info->edges[edge].highwater=0;
582 polygon_info->edges[edge].ghostline=ghostline;
583 polygon_info->edges[edge].direction=(ssize_t) direction;
584 polygon_info->edges[edge].points=points;
585 polygon_info->edges[edge].bounds=bounds;
586 polygon_info->number_edges=0;
587 for (i=0; path_info[i].code != EndCode; i++)
588 {
589 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
590 (path_info[i].code == GhostlineCode))
591 {
592 /*
593 Move to.
594 */
595 if ((points != (PointInfo *) NULL) && (n >= 2))
596 {
597 if (edge == number_edges)
598 {
599 number_edges<<=1;
600 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
601 polygon_info->edges,(size_t) number_edges,
602 sizeof(*polygon_info->edges));
603 if (polygon_info->edges == (EdgeInfo *) NULL)
604 {
605 (void) ThrowMagickException(exception,GetMagickModule(),
606 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
607 points=(PointInfo *) RelinquishMagickMemory(points);
608 return(DestroyPolygonInfo(polygon_info));
609 }
610 }
611 polygon_info->edges[edge].number_points=(size_t) n;
612 polygon_info->edges[edge].scanline=(-1.0);
613 polygon_info->edges[edge].highwater=0;
614 polygon_info->edges[edge].ghostline=ghostline;
615 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
616 if (direction < 0)
617 ReversePoints(points,(size_t) n);
618 polygon_info->edges[edge].points=points;
619 polygon_info->edges[edge].bounds=bounds;
620 polygon_info->edges[edge].bounds.y1=points[0].y;
621 polygon_info->edges[edge].bounds.y2=points[n-1].y;
622 points=(PointInfo *) NULL;
623 ghostline=MagickFalse;
624 edge++;
625 polygon_info->number_edges=edge;
626 }
627 if (points == (PointInfo *) NULL)
628 {
629 number_points=16;
630 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
631 sizeof(*points));
632 if (points == (PointInfo *) NULL)
633 {
634 (void) ThrowMagickException(exception,GetMagickModule(),
635 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
636 return(DestroyPolygonInfo(polygon_info));
637 }
638 }
639 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
640 point=path_info[i].point;
641 points[0]=point;
642 bounds.x1=point.x;
643 bounds.x2=point.x;
644 direction=0;
645 n=1;
646 continue;
647 }
648 /*
649 Line to.
650 */
651 next_direction=((path_info[i].point.y > point.y) ||
652 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
653 (path_info[i].point.x > point.x))) ? 1 : -1;
654 if ((points != (PointInfo *) NULL) && (direction != 0) &&
655 (direction != next_direction))
656 {
657 /*
658 New edge.
659 */
660 point=points[n-1];
661 if (edge == number_edges)
662 {
663 number_edges<<=1;
664 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
665 polygon_info->edges,(size_t) number_edges,
666 sizeof(*polygon_info->edges));
667 if (polygon_info->edges == (EdgeInfo *) NULL)
668 {
669 (void) ThrowMagickException(exception,GetMagickModule(),
670 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
671 points=(PointInfo *) RelinquishMagickMemory(points);
672 return(DestroyPolygonInfo(polygon_info));
673 }
674 }
675 polygon_info->edges[edge].number_points=(size_t) n;
676 polygon_info->edges[edge].scanline=(-1.0);
677 polygon_info->edges[edge].highwater=0;
678 polygon_info->edges[edge].ghostline=ghostline;
679 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
680 if (direction < 0)
681 ReversePoints(points,(size_t) n);
682 polygon_info->edges[edge].points=points;
683 polygon_info->edges[edge].bounds=bounds;
684 polygon_info->edges[edge].bounds.y1=points[0].y;
685 polygon_info->edges[edge].bounds.y2=points[n-1].y;
686 polygon_info->number_edges=edge+1;
687 points=(PointInfo *) NULL;
688 number_points=16;
689 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
690 sizeof(*points));
691 if (points == (PointInfo *) NULL)
692 {
693 (void) ThrowMagickException(exception,GetMagickModule(),
694 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
695 return(DestroyPolygonInfo(polygon_info));
696 }
697 n=1;
698 ghostline=MagickFalse;
699 points[0]=point;
700 bounds.x1=point.x;
701 bounds.x2=point.x;
702 edge++;
703 }
704 direction=next_direction;
705 if (points == (PointInfo *) NULL)
706 continue;
707 if (n == (ssize_t) number_points)
708 {
709 number_points<<=1;
710 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
711 sizeof(*points));
712 if (points == (PointInfo *) NULL)
713 {
714 (void) ThrowMagickException(exception,GetMagickModule(),
715 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
716 return(DestroyPolygonInfo(polygon_info));
717 }
718 }
719 point=path_info[i].point;
720 points[n]=point;
721 if (point.x < bounds.x1)
722 bounds.x1=point.x;
723 if (point.x > bounds.x2)
724 bounds.x2=point.x;
725 n++;
726 }
727 if (points != (PointInfo *) NULL)
728 {
729 if (n < 2)
730 points=(PointInfo *) RelinquishMagickMemory(points);
731 else
732 {
733 if (edge == number_edges)
734 {
735 number_edges<<=1;
736 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
737 polygon_info->edges,(size_t) number_edges,
738 sizeof(*polygon_info->edges));
739 if (polygon_info->edges == (EdgeInfo *) NULL)
740 {
741 (void) ThrowMagickException(exception,GetMagickModule(),
742 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
743 return(DestroyPolygonInfo(polygon_info));
744 }
745 }
746 polygon_info->edges[edge].number_points=(size_t) n;
747 polygon_info->edges[edge].scanline=(-1.0);
748 polygon_info->edges[edge].highwater=0;
749 polygon_info->edges[edge].ghostline=ghostline;
750 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
751 if (direction < 0)
752 ReversePoints(points,(size_t) n);
753 polygon_info->edges[edge].points=points;
754 polygon_info->edges[edge].bounds=bounds;
755 polygon_info->edges[edge].bounds.y1=points[0].y;
756 polygon_info->edges[edge].bounds.y2=points[n-1].y;
757 points=(PointInfo *) NULL;
758 ghostline=MagickFalse;
759 edge++;
760 polygon_info->number_edges=edge;
761 }
762 }
763 polygon_info->number_edges=edge;
764 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
765 polygon_info->number_edges,sizeof(*polygon_info->edges));
766 if (polygon_info->edges == (EdgeInfo *) NULL)
767 {
768 (void) ThrowMagickException(exception,GetMagickModule(),
769 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
770 return(DestroyPolygonInfo(polygon_info));
771 }
772 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
773 {
774 EdgeInfo
775 *edge_info;
776
777 edge_info=polygon_info->edges+i;
778 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
779 edge_info->number_points,sizeof(*edge_info->points));
780 if (edge_info->points == (PointInfo *) NULL)
781 {
782 (void) ThrowMagickException(exception,GetMagickModule(),
783 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
784 return(DestroyPolygonInfo(polygon_info));
785 }
786 }
787 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
788 sizeof(*polygon_info->edges),DrawCompareEdges);
789 if ((GetLogEventMask() & DrawEvent) != 0)
790 LogPolygonInfo(polygon_info);
791 return(polygon_info);
792}
793␌
794/*
795%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
796% %
797% %
798% %
799+ C o n v e r t P r i m i t i v e T o P a t h %
800% %
801% %
802% %
803%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
804%
805% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
806% path structure.
807%
808% The format of the ConvertPrimitiveToPath method is:
809%
810% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
811% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
812%
813% A description of each parameter follows:
814%
815% o ConvertPrimitiveToPath() returns a vector path structure of type
816% PathInfo.
817%
818% o draw_info: a structure of type DrawInfo.
819%
820% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
821%
822%
823*/
824
825static void LogPathInfo(const PathInfo *path_info)
826{
827 const PathInfo
828 *p;
829
830 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
831 for (p=path_info; p->code != EndCode; p++)
832 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
833 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
834 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
835 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
836 "?");
837 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
838}
839
840static PathInfo *ConvertPrimitiveToPath(
841 const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
842 ExceptionInfo *exception)
843{
844 MagickBooleanType
845 closed_subpath;
846
847 PathInfo
848 *path_info;
849
850 PathInfoCode
851 code;
852
853 PointInfo
854 p,
855 q;
856
857 ssize_t
858 i,
859 n;
860
861 ssize_t
862 coordinates,
863 start;
864
865 magick_unreferenced(draw_info);
866
867 /*
868 Converts a PrimitiveInfo structure into a vector path structure.
869 */
870 switch (primitive_info->primitive)
871 {
872 case PointPrimitive:
873 case ColorPrimitive:
874 case MattePrimitive:
875 case TextPrimitive:
876 case ImagePrimitive:
877 return((PathInfo *) NULL);
878 default:
879 break;
880 }
881 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
882 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
883 sizeof(*path_info));
884 if (path_info == (PathInfo *) NULL)
885 {
886 (void) ThrowMagickException(exception,GetMagickModule(),
887 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
888 return((PathInfo *) NULL);
889 }
890 coordinates=0;
891 closed_subpath=MagickFalse;
892 n=0;
893 p.x=(-1.0);
894 p.y=(-1.0);
895 q.x=(-1.0);
896 q.y=(-1.0);
897 start=0;
898 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
899 {
900 code=LineToCode;
901 if (coordinates <= 0)
902 {
903 /*
904 New subpath.
905 */
906 coordinates=(ssize_t) primitive_info[i].coordinates;
907 p=primitive_info[i].point;
908 start=n;
909 code=MoveToCode;
910 closed_subpath=primitive_info[i].closed_subpath;
911 }
912 coordinates--;
913 if ((code == MoveToCode) || (coordinates <= 0) ||
914 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
915 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
916 {
917 /*
918 Eliminate duplicate points.
919 */
920 path_info[n].code=code;
921 path_info[n].point=primitive_info[i].point;
922 q=primitive_info[i].point;
923 n++;
924 }
925 if (coordinates > 0)
926 continue; /* next point in current subpath */
927 if (closed_subpath != MagickFalse)
928 {
929 closed_subpath=MagickFalse;
930 continue;
931 }
932 /*
933 Mark the p point as open if the subpath is not closed.
934 */
935 path_info[start].code=OpenCode;
936 path_info[n].code=GhostlineCode;
937 path_info[n].point=primitive_info[i].point;
938 n++;
939 path_info[n].code=LineToCode;
940 path_info[n].point=p;
941 n++;
942 }
943 path_info[n].code=EndCode;
944 path_info[n].point.x=0.0;
945 path_info[n].point.y=0.0;
946 if (IsEventLogging() != MagickFalse)
947 LogPathInfo(path_info);
948 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
949 sizeof(*path_info));
950 return(path_info);
951}
952␌
953/*
954%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
955% %
956% %
957% %
958% D e s t r o y D r a w I n f o %
959% %
960% %
961% %
962%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
963%
964% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
965%
966% The format of the DestroyDrawInfo method is:
967%
968% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
969%
970% A description of each parameter follows:
971%
972% o draw_info: the draw info.
973%
974*/
975MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
976{
977 assert(draw_info != (DrawInfo *) NULL);
978 assert(draw_info->signature == MagickCoreSignature);
979 if (IsEventLogging() != MagickFalse)
980 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
981 if (draw_info->id != (char *) NULL)
982 draw_info->id=DestroyString(draw_info->id);
983 if (draw_info->primitive != (char *) NULL)
984 draw_info->primitive=DestroyString(draw_info->primitive);
985 if (draw_info->text != (char *) NULL)
986 draw_info->text=DestroyString(draw_info->text);
987 if (draw_info->geometry != (char *) NULL)
988 draw_info->geometry=DestroyString(draw_info->geometry);
989 if (draw_info->tile != (Image *) NULL)
990 draw_info->tile=DestroyImage(draw_info->tile);
991 if (draw_info->fill_pattern != (Image *) NULL)
992 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
993 if (draw_info->stroke_pattern != (Image *) NULL)
994 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
995 if (draw_info->font != (char *) NULL)
996 draw_info->font=DestroyString(draw_info->font);
997 if (draw_info->metrics != (char *) NULL)
998 draw_info->metrics=DestroyString(draw_info->metrics);
999 if (draw_info->family != (char *) NULL)
1000 draw_info->family=DestroyString(draw_info->family);
1001 if (draw_info->encoding != (char *) NULL)
1002 draw_info->encoding=DestroyString(draw_info->encoding);
1003 if (draw_info->density != (char *) NULL)
1004 draw_info->density=DestroyString(draw_info->density);
1005 if (draw_info->server_name != (char *) NULL)
1006 draw_info->server_name=(char *)
1007 RelinquishMagickMemory(draw_info->server_name);
1008 if (draw_info->dash_pattern != (double *) NULL)
1009 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1010 draw_info->dash_pattern);
1011 if (draw_info->gradient.stops != (StopInfo *) NULL)
1012 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1013 draw_info->gradient.stops);
1014 if (draw_info->clip_mask != (char *) NULL)
1015 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1016 if (draw_info->clipping_mask != (Image *) NULL)
1017 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1018 if (draw_info->composite_mask != (Image *) NULL)
1019 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1020 if (draw_info->image_info != (ImageInfo *) NULL)
1021 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1022 draw_info->signature=(~MagickCoreSignature);
1023 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1024 return(draw_info);
1025}
1026␌
1027/*
1028%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1029% %
1030% %
1031% %
1032% D r a w A f f i n e I m a g e %
1033% %
1034% %
1035% %
1036%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1037%
1038% DrawAffineImage() composites the source over the destination image as
1039% dictated by the affine transform.
1040%
1041% The format of the DrawAffineImage method is:
1042%
1043% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1044% const AffineMatrix *affine)
1045%
1046% A description of each parameter follows:
1047%
1048% o image: the image.
1049%
1050% o source: the source image.
1051%
1052% o affine: the affine transform.
1053%
1054*/
1055
1056static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1057 const double y,const SegmentInfo *edge)
1058{
1059 double
1060 intercept,
1061 z;
1062
1063 double
1064 x;
1065
1066 SegmentInfo
1067 inverse_edge;
1068
1069 /*
1070 Determine left and right edges.
1071 */
1072 inverse_edge.x1=edge->x1;
1073 inverse_edge.y1=edge->y1;
1074 inverse_edge.x2=edge->x2;
1075 inverse_edge.y2=edge->y2;
1076 z=affine->ry*y+affine->tx;
1077 if (affine->sx >= MagickEpsilon)
1078 {
1079 intercept=(-z/affine->sx);
1080 x=intercept;
1081 if (x > inverse_edge.x1)
1082 inverse_edge.x1=x;
1083 intercept=(-z+(double) image->columns)/affine->sx;
1084 x=intercept;
1085 if (x < inverse_edge.x2)
1086 inverse_edge.x2=x;
1087 }
1088 else
1089 if (affine->sx < -MagickEpsilon)
1090 {
1091 intercept=(-z+(double) image->columns)/affine->sx;
1092 x=intercept;
1093 if (x > inverse_edge.x1)
1094 inverse_edge.x1=x;
1095 intercept=(-z/affine->sx);
1096 x=intercept;
1097 if (x < inverse_edge.x2)
1098 inverse_edge.x2=x;
1099 }
1100 else
1101 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1102 {
1103 inverse_edge.x2=edge->x1;
1104 return(inverse_edge);
1105 }
1106 /*
1107 Determine top and bottom edges.
1108 */
1109 z=affine->sy*y+affine->ty;
1110 if (affine->rx >= MagickEpsilon)
1111 {
1112 intercept=(-z/affine->rx);
1113 x=intercept;
1114 if (x > inverse_edge.x1)
1115 inverse_edge.x1=x;
1116 intercept=(-z+(double) image->rows)/affine->rx;
1117 x=intercept;
1118 if (x < inverse_edge.x2)
1119 inverse_edge.x2=x;
1120 }
1121 else
1122 if (affine->rx < -MagickEpsilon)
1123 {
1124 intercept=(-z+(double) image->rows)/affine->rx;
1125 x=intercept;
1126 if (x > inverse_edge.x1)
1127 inverse_edge.x1=x;
1128 intercept=(-z/affine->rx);
1129 x=intercept;
1130 if (x < inverse_edge.x2)
1131 inverse_edge.x2=x;
1132 }
1133 else
1134 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1135 {
1136 inverse_edge.x2=edge->x2;
1137 return(inverse_edge);
1138 }
1139 return(inverse_edge);
1140}
1141
1142static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1143{
1144 AffineMatrix
1145 inverse_affine;
1146
1147 double
1148 determinant;
1149
1150 determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1151 affine->ry);
1152 inverse_affine.sx=determinant*affine->sy;
1153 inverse_affine.rx=determinant*(-affine->rx);
1154 inverse_affine.ry=determinant*(-affine->ry);
1155 inverse_affine.sy=determinant*affine->sx;
1156 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1157 inverse_affine.ry;
1158 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1159 inverse_affine.sy;
1160 return(inverse_affine);
1161}
1162
1163MagickExport MagickBooleanType DrawAffineImage(Image *image,
1164 const Image *source,const AffineMatrix *affine)
1165{
1166 AffineMatrix
1167 inverse_affine;
1168
1169 CacheView
1170 *image_view,
1171 *source_view;
1172
1173 ExceptionInfo
1174 *exception;
1175
1176 MagickBooleanType
1177 status;
1178
1179 MagickPixelPacket
1180 zero;
1181
1182 PointInfo
1183 extent[4],
1184 min,
1185 max,
1186 point;
1187
1188 ssize_t
1189 i;
1190
1191 SegmentInfo
1192 edge;
1193
1194 ssize_t
1195 start,
1196 stop,
1197 y;
1198
1199 /*
1200 Determine bounding box.
1201 */
1202 assert(image != (Image *) NULL);
1203 assert(image->signature == MagickCoreSignature);
1204 assert(source != (const Image *) NULL);
1205 assert(source->signature == MagickCoreSignature);
1206 if (IsEventLogging() != MagickFalse)
1207 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1208 assert(affine != (AffineMatrix *) NULL);
1209 extent[0].x=0.0;
1210 extent[0].y=0.0;
1211 extent[1].x=(double) source->columns;
1212 extent[1].y=0.0;
1213 extent[2].x=(double) source->columns;
1214 extent[2].y=(double) source->rows;
1215 extent[3].x=0.0;
1216 extent[3].y=(double) source->rows;
1217 for (i=0; i < 4; i++)
1218 {
1219 point=extent[i];
1220 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1221 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1222 }
1223 min=extent[0];
1224 max=extent[0];
1225 for (i=1; i < 4; i++)
1226 {
1227 if (min.x > extent[i].x)
1228 min.x=extent[i].x;
1229 if (min.y > extent[i].y)
1230 min.y=extent[i].y;
1231 if (max.x < extent[i].x)
1232 max.x=extent[i].x;
1233 if (max.y < extent[i].y)
1234 max.y=extent[i].y;
1235 }
1236 /*
1237 Affine transform image.
1238 */
1239 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1240 return(MagickFalse);
1241 status=MagickTrue;
1242 edge.x1=min.x;
1243 edge.y1=min.y;
1244 edge.x2=max.x;
1245 edge.y2=max.y;
1246 inverse_affine=InverseAffineMatrix(affine);
1247 if (edge.y1 < 0.0)
1248 edge.y1=0.0;
1249 if (edge.y2 > (image->rows-1.0))
1250 edge.y2=image->rows-1.0;
1251 GetMagickPixelPacket(image,&zero);
1252 exception=(&image->exception);
1253 start=CastDoubleToLong(ceil(edge.y1-0.5));
1254 stop=CastDoubleToLong(floor(edge.y2+0.5));
1255 source_view=AcquireVirtualCacheView(source,exception);
1256 image_view=AcquireAuthenticCacheView(image,exception);
1257#if defined(MAGICKCORE_OPENMP_SUPPORT)
1258 #pragma omp parallel for schedule(static) shared(status) \
1259 magick_number_threads(source,image,stop-start,1)
1260#endif
1261 for (y=start; y <= stop; y++)
1262 {
1263 IndexPacket
1264 *magick_restrict indexes;
1265
1266 MagickPixelPacket
1267 composite,
1268 pixel;
1269
1270 PointInfo
1271 point;
1272
1273 PixelPacket
1274 *magick_restrict q;
1275
1276 SegmentInfo
1277 inverse_edge;
1278
1279 ssize_t
1280 x,
1281 x_offset;
1282
1283 if (status == MagickFalse)
1284 continue;
1285 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1286 if (inverse_edge.x2 < inverse_edge.x1)
1287 continue;
1288 if (inverse_edge.x1 < 0.0)
1289 inverse_edge.x1=0.0;
1290 if (inverse_edge.x2 > image->columns-1.0)
1291 inverse_edge.x2=image->columns-1.0;
1292 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1293 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1294 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1295 if (q == (PixelPacket *) NULL)
1296 continue;
1297 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1298 pixel=zero;
1299 composite=zero;
1300 x_offset=0;
1301 for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1302 x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1303 {
1304 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1305 inverse_affine.tx;
1306 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1307 inverse_affine.ty;
1308 status=InterpolateMagickPixelPacket(source,source_view,
1309 UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1310 if (status == MagickFalse)
1311 break;
1312 SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1313 MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1314 composite.opacity,&composite);
1315 SetPixelPacket(image,&composite,q,indexes+x_offset);
1316 x_offset++;
1317 q++;
1318 }
1319 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1320 status=MagickFalse;
1321 }
1322 source_view=DestroyCacheView(source_view);
1323 image_view=DestroyCacheView(image_view);
1324 return(status);
1325}
1326␌
1327/*
1328%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1329% %
1330% %
1331% %
1332+ D r a w B o u n d i n g R e c t a n g l e s %
1333% %
1334% %
1335% %
1336%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1337%
1338% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1339% is only useful for developers debugging the rendering algorithm.
1340%
1341% The format of the DrawBoundingRectangles method is:
1342%
1343% MagickBooleanType DrawBoundingRectangles(Image *image,
1344% const DrawInfo *draw_info,PolygonInfo *polygon_info)
1345%
1346% A description of each parameter follows:
1347%
1348% o image: the image.
1349%
1350% o draw_info: the draw info.
1351%
1352% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1353%
1354*/
1355
1356static MagickBooleanType DrawBoundingRectangles(Image *image,
1357 const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1358{
1359 double
1360 mid;
1361
1362 DrawInfo
1363 *clone_info;
1364
1365 MagickStatusType
1366 status;
1367
1368 PointInfo
1369 end,
1370 resolution,
1371 start;
1372
1373 PrimitiveInfo
1374 primitive_info[6];
1375
1376 ssize_t
1377 i;
1378
1379 SegmentInfo
1380 bounds;
1381
1382 ssize_t
1383 coordinates;
1384
1385 (void) memset(primitive_info,0,sizeof(primitive_info));
1386 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1387 status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1388 if (status == MagickFalse)
1389 {
1390 clone_info=DestroyDrawInfo(clone_info);
1391 return(MagickFalse);
1392 }
1393 resolution.x=96.0;
1394 resolution.y=96.0;
1395 if (clone_info->density != (char *) NULL)
1396 {
1397 GeometryInfo
1398 geometry_info;
1399
1400 MagickStatusType
1401 flags;
1402
1403 flags=ParseGeometry(clone_info->density,&geometry_info);
1404 if ((flags & RhoValue) != 0)
1405 resolution.x=geometry_info.rho;
1406 resolution.y=resolution.x;
1407 if ((flags & SigmaValue) != 0)
1408 resolution.y=geometry_info.sigma;
1409 }
1410 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1411 clone_info->stroke_width/2.0;
1412 bounds.x1=0.0;
1413 bounds.y1=0.0;
1414 bounds.x2=0.0;
1415 bounds.y2=0.0;
1416 if (polygon_info != (PolygonInfo *) NULL)
1417 {
1418 bounds=polygon_info->edges[0].bounds;
1419 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1420 {
1421 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1422 bounds.x1=polygon_info->edges[i].bounds.x1;
1423 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1424 bounds.y1=polygon_info->edges[i].bounds.y1;
1425 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1426 bounds.x2=polygon_info->edges[i].bounds.x2;
1427 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1428 bounds.y2=polygon_info->edges[i].bounds.y2;
1429 }
1430 bounds.x1-=mid;
1431 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1432 image->columns ? (double) image->columns-1 : bounds.x1;
1433 bounds.y1-=mid;
1434 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1435 image->rows ? (double) image->rows-1 : bounds.y1;
1436 bounds.x2+=mid;
1437 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1438 image->columns ? (double) image->columns-1 : bounds.x2;
1439 bounds.y2+=mid;
1440 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1441 image->rows ? (double) image->rows-1 : bounds.y2;
1442 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1443 {
1444 if (polygon_info->edges[i].direction != 0)
1445 status=QueryColorDatabase("#f00",&clone_info->stroke,
1446 &image->exception);
1447 else
1448 status=QueryColorDatabase("#0f0",&clone_info->stroke,
1449 &image->exception);
1450 if (status == MagickFalse)
1451 break;
1452 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1453 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1454 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1455 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1456 primitive_info[0].primitive=RectanglePrimitive;
1457 status&=TraceRectangle(primitive_info,start,end);
1458 primitive_info[0].method=ReplaceMethod;
1459 coordinates=(ssize_t) primitive_info[0].coordinates;
1460 primitive_info[coordinates].primitive=UndefinedPrimitive;
1461 status=DrawPrimitive(image,clone_info,primitive_info);
1462 if (status == MagickFalse)
1463 break;
1464 }
1465 if (i < (ssize_t) polygon_info->number_edges)
1466 {
1467 clone_info=DestroyDrawInfo(clone_info);
1468 return(status == 0 ? MagickFalse : MagickTrue);
1469 }
1470 }
1471 status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1472 if (status == MagickFalse)
1473 {
1474 clone_info=DestroyDrawInfo(clone_info);
1475 return(MagickFalse);
1476 }
1477 start.x=(double) (bounds.x1-mid);
1478 start.y=(double) (bounds.y1-mid);
1479 end.x=(double) (bounds.x2+mid);
1480 end.y=(double) (bounds.y2+mid);
1481 primitive_info[0].primitive=RectanglePrimitive;
1482 status&=TraceRectangle(primitive_info,start,end);
1483 primitive_info[0].method=ReplaceMethod;
1484 coordinates=(ssize_t) primitive_info[0].coordinates;
1485 primitive_info[coordinates].primitive=UndefinedPrimitive;
1486 status=DrawPrimitive(image,clone_info,primitive_info);
1487 clone_info=DestroyDrawInfo(clone_info);
1488 return(status == 0 ? MagickFalse : MagickTrue);
1489}
1490␌
1491/*
1492%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1493% %
1494% %
1495% %
1496% D r a w C l i p P a t h %
1497% %
1498% %
1499% %
1500%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1501%
1502% DrawClipPath() draws the clip path on the image mask.
1503%
1504% The format of the DrawClipPath method is:
1505%
1506% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1507% const char *id)
1508%
1509% A description of each parameter follows:
1510%
1511% o image: the image.
1512%
1513% o draw_info: the draw info.
1514%
1515% o id: the clip path id.
1516%
1517*/
1518MagickExport MagickBooleanType DrawClipPath(Image *image,
1519 const DrawInfo *draw_info,const char *id)
1520{
1521 const char
1522 *clip_path;
1523
1524 Image
1525 *clipping_mask;
1526
1527 MagickBooleanType
1528 status;
1529
1530 clip_path=GetImageArtifact(image,id);
1531 if (clip_path == (const char *) NULL)
1532 return(MagickFalse);
1533 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1534 &image->exception);
1535 if (clipping_mask == (Image *) NULL)
1536 return(MagickFalse);
1537 status=SetImageClipMask(image,clipping_mask);
1538 clipping_mask=DestroyImage(clipping_mask);
1539 return(status);
1540}
1541␌
1542/*
1543%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1544% %
1545% %
1546% %
1547% D r a w C l i p p i n g M a s k %
1548% %
1549% %
1550% %
1551%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1552%
1553% DrawClippingMask() draws the clip path and returns it as an image clipping
1554% mask.
1555%
1556% The format of the DrawClippingMask method is:
1557%
1558% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1559% const char *id,const char *clip_path,ExceptionInfo *exception)
1560%
1561% A description of each parameter follows:
1562%
1563% o image: the image.
1564%
1565% o draw_info: the draw info.
1566%
1567% o id: the clip path id.
1568%
1569% o clip_path: the clip path.
1570%
1571% o exception: return any errors or warnings in this structure.
1572%
1573*/
1574static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1575 const char *id,const char *clip_path,ExceptionInfo *exception)
1576{
1577 DrawInfo
1578 *clone_info;
1579
1580 Image
1581 *clip_mask;
1582
1583 MagickStatusType
1584 status;
1585
1586 /*
1587 Draw a clip path.
1588 */
1589 assert(image != (Image *) NULL);
1590 assert(image->signature == MagickCoreSignature);
1591 assert(draw_info != (const DrawInfo *) NULL);
1592 if (IsEventLogging() != MagickFalse)
1593 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1594 clip_mask=AcquireImage((const ImageInfo *) NULL);
1595 status=SetImageExtent(clip_mask,image->columns,image->rows);
1596 if (status == MagickFalse)
1597 return(DestroyImage(clip_mask));
1598 status=SetImageClipMask(image,(Image *) NULL);
1599 status=QueryColorCompliance("#0000",AllCompliance,
1600 &clip_mask->background_color,exception);
1601 clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1602 status=SetImageBackgroundColor(clip_mask);
1603 if (draw_info->debug != MagickFalse)
1604 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1605 id);
1606 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1607 (void) CloneString(&clone_info->primitive,clip_path);
1608 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1609 exception);
1610 if (clone_info->clip_mask != (char *) NULL)
1611 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1612 (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1613 exception);
1614 clone_info->stroke_width=0.0;
1615 clone_info->opacity=OpaqueOpacity;
1616 clone_info->clip_path=MagickTrue;
1617 status=RenderMVGContent(clip_mask,clone_info,0);
1618 clone_info=DestroyDrawInfo(clone_info);
1619 status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1620 if (draw_info->compliance != SVGCompliance)
1621 status&=NegateImage(clip_mask,MagickFalse);
1622 if (status == MagickFalse)
1623 clip_mask=DestroyImage(clip_mask);
1624 if (draw_info->debug != MagickFalse)
1625 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1626 return(clip_mask);
1627}
1628␌
1629/*
1630%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1631% %
1632% %
1633% %
1634% D r a w C o m p o s i t e M a s k %
1635% %
1636% %
1637% %
1638%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1639%
1640% DrawCompositeMask() draws the mask path and returns it as an image mask.
1641%
1642% The format of the DrawCompositeMask method is:
1643%
1644% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1645% const char *id,const char *mask_path,ExceptionInfo *exception)
1646%
1647% A description of each parameter follows:
1648%
1649% o image: the image.
1650%
1651% o draw_info: the draw info.
1652%
1653% o id: the mask path id.
1654%
1655% o mask_path: the mask path.
1656%
1657% o exception: return any errors or warnings in this structure.
1658%
1659*/
1660static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1661 const char *id,const char *mask_path,ExceptionInfo *exception)
1662{
1663 Image
1664 *composite_mask;
1665
1666 DrawInfo
1667 *clone_info;
1668
1669 MagickStatusType
1670 status;
1671
1672 /*
1673 Draw a mask path.
1674 */
1675 assert(image != (Image *) NULL);
1676 assert(image->signature == MagickCoreSignature);
1677 assert(draw_info != (const DrawInfo *) NULL);
1678 if (IsEventLogging() != MagickFalse)
1679 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1680 composite_mask=AcquireImage((const ImageInfo *) NULL);
1681 status=SetImageExtent(composite_mask,image->columns,image->rows);
1682 if (status == MagickFalse)
1683 return(DestroyImage(composite_mask));
1684 status=SetImageMask(image,(Image *) NULL);
1685 status=QueryColorCompliance("#0000",AllCompliance,
1686 &composite_mask->background_color,exception);
1687 composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1688 (void) SetImageBackgroundColor(composite_mask);
1689 if (draw_info->debug != MagickFalse)
1690 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1691 id);
1692 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1693 (void) CloneString(&clone_info->primitive,mask_path);
1694 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1695 exception);
1696 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1697 exception);
1698 clone_info->stroke_width=0.0;
1699 clone_info->opacity=OpaqueOpacity;
1700 status=RenderMVGContent(composite_mask,clone_info,0);
1701 clone_info=DestroyDrawInfo(clone_info);
1702 status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1703 status&=NegateImage(composite_mask,MagickFalse);
1704 if (status == MagickFalse)
1705 composite_mask=DestroyImage(composite_mask);
1706 if (draw_info->debug != MagickFalse)
1707 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1708 return(composite_mask);
1709}
1710␌
1711/*
1712%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1713% %
1714% %
1715% %
1716+ D r a w D a s h P o l y g o n %
1717% %
1718% %
1719% %
1720%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1721%
1722% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1723% image while respecting the dash offset and dash pattern attributes.
1724%
1725% The format of the DrawDashPolygon method is:
1726%
1727% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1728% const PrimitiveInfo *primitive_info,Image *image)
1729%
1730% A description of each parameter follows:
1731%
1732% o draw_info: the draw info.
1733%
1734% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1735%
1736% o image: the image.
1737%
1738%
1739*/
1740static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1741 const PrimitiveInfo *primitive_info,Image *image)
1742{
1743 double
1744 dx,
1745 dy,
1746 length,
1747 maximum_length,
1748 offset,
1749 scale,
1750 total_length;
1751
1752 DrawInfo
1753 *clone_info;
1754
1755 MagickStatusType
1756 status;
1757
1758 PrimitiveInfo
1759 *dash_polygon;
1760
1761 ssize_t
1762 i;
1763
1764 size_t
1765 number_vertices;
1766
1767 ssize_t
1768 j,
1769 n;
1770
1771 assert(draw_info != (const DrawInfo *) NULL);
1772 if (draw_info->debug != MagickFalse)
1773 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1774 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1775 number_vertices=(size_t) i;
1776 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1777 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1778 if (dash_polygon == (PrimitiveInfo *) NULL)
1779 {
1780 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1781 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1782 return(MagickFalse);
1783 }
1784 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1785 sizeof(*dash_polygon));
1786 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1787 clone_info->miterlimit=0;
1788 dash_polygon[0]=primitive_info[0];
1789 scale=ExpandAffine(&draw_info->affine);
1790 length=scale*draw_info->dash_pattern[0];
1791 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1792 scale*draw_info->dash_offset : 0.0;
1793 j=1;
1794 for (n=0; offset > 0.0; j=0)
1795 {
1796 if (draw_info->dash_pattern[n] <= 0.0)
1797 break;
1798 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1799 if (offset > length)
1800 {
1801 offset-=length;
1802 n++;
1803 length=scale*draw_info->dash_pattern[n];
1804 continue;
1805 }
1806 if (offset < length)
1807 {
1808 length-=offset;
1809 offset=0.0;
1810 break;
1811 }
1812 offset=0.0;
1813 n++;
1814 }
1815 status=MagickTrue;
1816 maximum_length=0.0;
1817 total_length=0.0;
1818 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1819 {
1820 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1821 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1822 maximum_length=hypot(dx,dy);
1823 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1824 continue;
1825 if (fabs(length) < MagickEpsilon)
1826 {
1827 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1828 n++;
1829 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1830 n=0;
1831 length=scale*draw_info->dash_pattern[n];
1832 }
1833 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1834 {
1835 total_length+=length;
1836 if ((n & 0x01) != 0)
1837 {
1838 dash_polygon[0]=primitive_info[0];
1839 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1840 total_length*PerceptibleReciprocal(maximum_length));
1841 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1842 total_length*PerceptibleReciprocal(maximum_length));
1843 j=1;
1844 }
1845 else
1846 {
1847 if ((j+1) > (ssize_t) number_vertices)
1848 break;
1849 dash_polygon[j]=primitive_info[i-1];
1850 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1851 total_length*PerceptibleReciprocal(maximum_length));
1852 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1853 total_length*PerceptibleReciprocal(maximum_length));
1854 dash_polygon[j].coordinates=1;
1855 j++;
1856 dash_polygon[0].coordinates=(size_t) j;
1857 dash_polygon[j].primitive=UndefinedPrimitive;
1858 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1859 if (status == MagickFalse)
1860 break;
1861 }
1862 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1863 n++;
1864 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1865 n=0;
1866 length=scale*draw_info->dash_pattern[n];
1867 }
1868 length-=(maximum_length-total_length);
1869 if ((n & 0x01) != 0)
1870 continue;
1871 dash_polygon[j]=primitive_info[i];
1872 dash_polygon[j].coordinates=1;
1873 j++;
1874 }
1875 if ((status != MagickFalse) && (total_length < maximum_length) &&
1876 ((n & 0x01) == 0) && (j > 1))
1877 {
1878 dash_polygon[j]=primitive_info[i-1];
1879 dash_polygon[j].point.x+=MagickEpsilon;
1880 dash_polygon[j].point.y+=MagickEpsilon;
1881 dash_polygon[j].coordinates=1;
1882 j++;
1883 dash_polygon[0].coordinates=(size_t) j;
1884 dash_polygon[j].primitive=UndefinedPrimitive;
1885 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1886 }
1887 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1888 clone_info=DestroyDrawInfo(clone_info);
1889 if (draw_info->debug != MagickFalse)
1890 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1891 return(status != 0 ? MagickTrue : MagickFalse);
1892}
1893␌
1894/*
1895%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1896% %
1897% %
1898% %
1899% D r a w G r a d i e n t I m a g e %
1900% %
1901% %
1902% %
1903%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1904%
1905% DrawGradientImage() draws a linear gradient on the image.
1906%
1907% The format of the DrawGradientImage method is:
1908%
1909% MagickBooleanType DrawGradientImage(Image *image,
1910% const DrawInfo *draw_info)
1911%
1912% A description of each parameter follows:
1913%
1914% o image: the image.
1915%
1916% o draw_info: the draw info.
1917%
1918*/
1919
1920static inline double GetStopColorOffset(const GradientInfo *gradient,
1921 const ssize_t x,const ssize_t y)
1922{
1923 switch (gradient->type)
1924 {
1925 case UndefinedGradient:
1926 case LinearGradient:
1927 {
1928 double
1929 gamma,
1930 length,
1931 offset,
1932 scale;
1933
1934 PointInfo
1935 p,
1936 q;
1937
1938 const SegmentInfo
1939 *gradient_vector;
1940
1941 gradient_vector=(&gradient->gradient_vector);
1942 p.x=gradient_vector->x2-gradient_vector->x1;
1943 p.y=gradient_vector->y2-gradient_vector->y1;
1944 q.x=(double) x-gradient_vector->x1;
1945 q.y=(double) y-gradient_vector->y1;
1946 length=sqrt(q.x*q.x+q.y*q.y);
1947 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1948 gamma=PerceptibleReciprocal(gamma);
1949 scale=p.x*q.x+p.y*q.y;
1950 offset=gamma*scale*length;
1951 return(offset);
1952 }
1953 case RadialGradient:
1954 {
1955 PointInfo
1956 v;
1957
1958 if (gradient->spread == RepeatSpread)
1959 {
1960 v.x=(double) x-gradient->center.x;
1961 v.y=(double) y-gradient->center.y;
1962 return(sqrt(v.x*v.x+v.y*v.y));
1963 }
1964 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1965 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1966 gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1967 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1968 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1969 gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1970 return(sqrt(v.x*v.x+v.y*v.y));
1971 }
1972 }
1973 return(0.0);
1974}
1975
1976MagickExport MagickBooleanType DrawGradientImage(Image *image,
1977 const DrawInfo *draw_info)
1978{
1979 CacheView
1980 *image_view;
1981
1982 const GradientInfo
1983 *gradient;
1984
1985 const SegmentInfo
1986 *gradient_vector;
1987
1988 double
1989 length;
1990
1991 ExceptionInfo
1992 *exception;
1993
1994 MagickBooleanType
1995 status;
1996
1997 MagickPixelPacket
1998 zero;
1999
2000 PointInfo
2001 point;
2002
2003 RectangleInfo
2004 bounding_box;
2005
2006 ssize_t
2007 height,
2008 y;
2009
2010 /*
2011 Draw linear or radial gradient on image.
2012 */
2013 assert(image != (Image *) NULL);
2014 assert(image->signature == MagickCoreSignature);
2015 assert(draw_info != (const DrawInfo *) NULL);
2016 if (IsEventLogging() != MagickFalse)
2017 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2018 gradient=(&draw_info->gradient);
2019 gradient_vector=(&gradient->gradient_vector);
2020 point.x=gradient_vector->x2-gradient_vector->x1;
2021 point.y=gradient_vector->y2-gradient_vector->y1;
2022 length=sqrt(point.x*point.x+point.y*point.y);
2023 bounding_box=gradient->bounding_box;
2024 status=MagickTrue;
2025 exception=(&image->exception);
2026 GetMagickPixelPacket(image,&zero);
2027 image_view=AcquireAuthenticCacheView(image,exception);
2028 height=(size_t) (bounding_box.y+bounding_box.height);
2029#if defined(MAGICKCORE_OPENMP_SUPPORT)
2030 #pragma omp parallel for schedule(static) shared(status) \
2031 magick_number_threads(image,image,height,1)
2032#endif
2033 for (y=bounding_box.y; y < (ssize_t) height; y++)
2034 {
2035 double
2036 alpha,
2037 offset;
2038
2039 MagickPixelPacket
2040 composite,
2041 pixel;
2042
2043 IndexPacket
2044 *magick_restrict indexes;
2045
2046 PixelPacket
2047 *magick_restrict q;
2048
2049 ssize_t
2050 i,
2051 j,
2052 width,
2053 x;
2054
2055 if (status == MagickFalse)
2056 continue;
2057 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2058 bounding_box.width,1,exception);
2059 if (q == (PixelPacket *) NULL)
2060 {
2061 status=MagickFalse;
2062 continue;
2063 }
2064 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2065 pixel=zero;
2066 composite=zero;
2067 offset=GetStopColorOffset(gradient,0,y);
2068 if (gradient->type != RadialGradient)
2069 offset*=PerceptibleReciprocal(length);
2070 width=(size_t) (bounding_box.x+bounding_box.width);
2071 for (x=bounding_box.x; x < (ssize_t) width; x++)
2072 {
2073 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2074 switch (gradient->spread)
2075 {
2076 case UndefinedSpread:
2077 case PadSpread:
2078 {
2079 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2080 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2081 {
2082 offset=GetStopColorOffset(gradient,x,y);
2083 if (gradient->type != RadialGradient)
2084 offset*=PerceptibleReciprocal(length);
2085 }
2086 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2087 if (offset < gradient->stops[i].offset)
2088 break;
2089 if ((offset < 0.0) || (i == 0))
2090 composite=gradient->stops[0].color;
2091 else
2092 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2093 composite=gradient->stops[gradient->number_stops-1].color;
2094 else
2095 {
2096 j=i;
2097 i--;
2098 alpha=(offset-gradient->stops[i].offset)/
2099 (gradient->stops[j].offset-gradient->stops[i].offset);
2100 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2101 &gradient->stops[j].color,alpha,&composite);
2102 }
2103 break;
2104 }
2105 case ReflectSpread:
2106 {
2107 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2108 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2109 {
2110 offset=GetStopColorOffset(gradient,x,y);
2111 if (gradient->type != RadialGradient)
2112 offset*=PerceptibleReciprocal(length);
2113 }
2114 if (offset < 0.0)
2115 offset=(-offset);
2116 if ((ssize_t) fmod(offset,2.0) == 0)
2117 offset=fmod(offset,1.0);
2118 else
2119 offset=1.0-fmod(offset,1.0);
2120 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2121 if (offset < gradient->stops[i].offset)
2122 break;
2123 if (i == 0)
2124 composite=gradient->stops[0].color;
2125 else
2126 if (i == (ssize_t) gradient->number_stops)
2127 composite=gradient->stops[gradient->number_stops-1].color;
2128 else
2129 {
2130 j=i;
2131 i--;
2132 alpha=(offset-gradient->stops[i].offset)/
2133 (gradient->stops[j].offset-gradient->stops[i].offset);
2134 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2135 &gradient->stops[j].color,alpha,&composite);
2136 }
2137 break;
2138 }
2139 case RepeatSpread:
2140 {
2141 double
2142 repeat;
2143
2144 MagickBooleanType
2145 antialias;
2146
2147 antialias=MagickFalse;
2148 repeat=0.0;
2149 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2150 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2151 {
2152 offset=GetStopColorOffset(gradient,x,y);
2153 if (gradient->type == LinearGradient)
2154 {
2155 repeat=fmod(offset,length);
2156 if (repeat < 0.0)
2157 repeat=length-fmod(-repeat,length);
2158 else
2159 repeat=fmod(offset,length);
2160 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2161 MagickTrue : MagickFalse;
2162 offset=PerceptibleReciprocal(length)*repeat;
2163 }
2164 else
2165 {
2166 repeat=fmod(offset,(double) gradient->radius);
2167 if (repeat < 0.0)
2168 repeat=gradient->radius-fmod(-repeat,
2169 (double) gradient->radius);
2170 else
2171 repeat=fmod(offset,(double) gradient->radius);
2172 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2173 MagickFalse;
2174 offset=repeat*PerceptibleReciprocal(gradient->radius);
2175 }
2176 }
2177 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2178 if (offset < gradient->stops[i].offset)
2179 break;
2180 if (i == 0)
2181 composite=gradient->stops[0].color;
2182 else
2183 if (i == (ssize_t) gradient->number_stops)
2184 composite=gradient->stops[gradient->number_stops-1].color;
2185 else
2186 {
2187 j=i;
2188 i--;
2189 alpha=(offset-gradient->stops[i].offset)/
2190 (gradient->stops[j].offset-gradient->stops[i].offset);
2191 if (antialias != MagickFalse)
2192 {
2193 if (gradient->type == LinearGradient)
2194 alpha=length-repeat;
2195 else
2196 alpha=gradient->radius-repeat;
2197 i=0;
2198 j=(ssize_t) gradient->number_stops-1L;
2199 }
2200 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2201 &gradient->stops[j].color,alpha,&composite);
2202 }
2203 break;
2204 }
2205 }
2206 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2207 pixel.opacity,&pixel);
2208 SetPixelPacket(image,&pixel,q,indexes+x);
2209 q++;
2210 }
2211 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2212 status=MagickFalse;
2213 }
2214 image_view=DestroyCacheView(image_view);
2215 return(status);
2216}
2217␌
2218/*
2219%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2220% %
2221% %
2222% %
2223% D r a w I m a g e %
2224% %
2225% %
2226% %
2227%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2228%
2229% DrawImage() draws a graphic primitive on your image. The primitive
2230% may be represented as a string or filename. Precede the filename with an
2231% "at" sign (@) and the contents of the file are drawn on the image. You
2232% can affect how text is drawn by setting one or more members of the draw
2233% info structure.
2234%
2235% The format of the DrawImage method is:
2236%
2237% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2238%
2239% A description of each parameter follows:
2240%
2241% o image: the image.
2242%
2243% o draw_info: the draw info.
2244%
2245*/
2246
2247static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2248 const double pad)
2249{
2250 char
2251 **text = (char **) NULL;
2252
2253 double
2254 extent;
2255
2256 size_t
2257 quantum;
2258
2259 ssize_t
2260 i;
2261
2262 /*
2263 Check if there is enough storage for drawing primitives.
2264 */
2265 quantum=sizeof(**mvg_info->primitive_info);
2266 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2267 if (extent <= (double) *mvg_info->extent)
2268 return(MagickTrue);
2269 if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2270 return(MagickFalse);
2271 if (mvg_info->offset > 0)
2272 {
2273 text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2274 if (text == (char **) NULL)
2275 return(MagickFalse);
2276 for (i=0; i < mvg_info->offset; i++)
2277 text[i]=(*mvg_info->primitive_info)[i].text;
2278 }
2279 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2280 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2281 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2282 {
2283 if (text != (char **) NULL)
2284 text=(char **) RelinquishMagickMemory(text);
2285 *mvg_info->extent=(size_t) extent;
2286 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2287 {
2288 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2289 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2290 }
2291 return(MagickTrue);
2292 }
2293 /*
2294 Reallocation failed, allocate a primitive to facilitate unwinding.
2295 */
2296 if (text != (char **) NULL)
2297 {
2298 for (i=0; i < mvg_info->offset; i++)
2299 if (text[i] != (char *) NULL)
2300 text[i]=DestroyString(text[i]);
2301 text=(char **) RelinquishMagickMemory(text);
2302 }
2303 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2304 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2305 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2306 (PrimitiveExtentPad+1)*quantum);
2307 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2308 quantum));
2309 *mvg_info->extent=1;
2310 mvg_info->offset=0;
2311 return(MagickFalse);
2312}
2313
2314static inline double GetDrawValue(const char *magick_restrict string,
2315 char **magick_restrict sentinel)
2316{
2317 char
2318 **magick_restrict q;
2319
2320 double
2321 value;
2322
2323 q=sentinel;
2324 value=InterpretLocaleValue(string,q);
2325 sentinel=q;
2326 return(value);
2327}
2328
2329static int MVGMacroCompare(const void *target,const void *source)
2330{
2331 const char
2332 *p,
2333 *q;
2334
2335 p=(const char *) target;
2336 q=(const char *) source;
2337 return(strcmp(p,q));
2338}
2339
2340static SplayTreeInfo *GetMVGMacros(const char *primitive)
2341{
2342 char
2343 *macro,
2344 *token;
2345
2346 const char
2347 *q;
2348
2349 size_t
2350 extent;
2351
2352 SplayTreeInfo
2353 *macros;
2354
2355 /*
2356 Scan graphic primitives for definitions and classes.
2357 */
2358 if (primitive == (const char *) NULL)
2359 return((SplayTreeInfo *) NULL);
2360 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2361 RelinquishMagickMemory);
2362 macro=AcquireString(primitive);
2363 token=AcquireString(primitive);
2364 extent=strlen(token)+MagickPathExtent;
2365 for (q=primitive; *q != '\0'; )
2366 {
2367 if (GetNextToken(q,&q,extent,token) < 1)
2368 break;
2369 if (*token == '\0')
2370 break;
2371 if (LocaleCompare("push",token) == 0)
2372 {
2373 const char
2374 *end,
2375 *start;
2376
2377 (void) GetNextToken(q,&q,extent,token);
2378 if (*q == '"')
2379 {
2380 char
2381 name[MagickPathExtent];
2382
2383 const char
2384 *p;
2385
2386 ssize_t
2387 n;
2388
2389 /*
2390 Named macro (e.g. push graphic-context "wheel").
2391 */
2392 (void) GetNextToken(q,&q,extent,token);
2393 start=q;
2394 end=q;
2395 (void) CopyMagickString(name,token,MagickPathExtent);
2396 n=1;
2397 for (p=q; *p != '\0'; )
2398 {
2399 if (GetNextToken(p,&p,extent,token) < 1)
2400 break;
2401 if (*token == '\0')
2402 break;
2403 if (LocaleCompare(token,"pop") == 0)
2404 {
2405 end=p-strlen(token)-1;
2406 n--;
2407 }
2408 if (LocaleCompare(token,"push") == 0)
2409 n++;
2410 if ((n == 0) && (end >= start))
2411 {
2412 size_t
2413 length=(size_t) (end-start);
2414
2415 /*
2416 Extract macro.
2417 */
2418 (void) GetNextToken(p,&p,extent,token);
2419 if (length > 0)
2420 {
2421 (void) CopyMagickString(macro,start,length);
2422 (void) AddValueToSplayTree(macros,ConstantString(name),
2423 ConstantString(macro));
2424 }
2425 break;
2426 }
2427 }
2428 }
2429 }
2430 }
2431 token=DestroyString(token);
2432 macro=DestroyString(macro);
2433 return(macros);
2434}
2435
2436static inline MagickBooleanType IsPoint(const char *point)
2437{
2438 char
2439 *p;
2440
2441 double
2442 value;
2443
2444 value=GetDrawValue(point,&p);
2445 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2446 MagickTrue);
2447}
2448
2449static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2450 const PointInfo point)
2451{
2452 primitive_info->coordinates=1;
2453 primitive_info->closed_subpath=MagickFalse;
2454 primitive_info->point=point;
2455 return(MagickTrue);
2456}
2457
2458static MagickBooleanType RenderMVGContent(Image *image,
2459 const DrawInfo *draw_info,const size_t depth)
2460{
2461#define RenderImageTag "Render/Image"
2462
2463 AffineMatrix
2464 affine,
2465 current;
2466
2467 char
2468 key[2*MaxTextExtent],
2469 keyword[MaxTextExtent],
2470 geometry[MaxTextExtent],
2471 name[MaxTextExtent],
2472 *next_token,
2473 pattern[MaxTextExtent],
2474 *primitive,
2475 *token;
2476
2477 const char
2478 *p,
2479 *q;
2480
2481 double
2482 angle,
2483 coordinates,
2484 cursor,
2485 factor,
2486 primitive_extent;
2487
2488 DrawInfo
2489 *clone_info,
2490 **graphic_context;
2491
2492 MagickBooleanType
2493 proceed;
2494
2495 MagickStatusType
2496 status;
2497
2498 MVGInfo
2499 mvg_info;
2500
2501 PointInfo
2502 point;
2503
2504 PixelPacket
2505 start_color;
2506
2507 PrimitiveInfo
2508 *primitive_info;
2509
2510 PrimitiveType
2511 primitive_type;
2512
2513 SegmentInfo
2514 bounds;
2515
2516 size_t
2517 extent,
2518 number_points;
2519
2520 SplayTreeInfo
2521 *macros;
2522
2523 ssize_t
2524 defsDepth,
2525 i,
2526 j,
2527 k,
2528 n,
2529 symbolDepth,
2530 x;
2531
2532 TypeMetric
2533 metrics;
2534
2535 assert(image != (Image *) NULL);
2536 assert(image->signature == MagickCoreSignature);
2537 assert(draw_info != (DrawInfo *) NULL);
2538 assert(draw_info->signature == MagickCoreSignature);
2539 if (IsEventLogging() != MagickFalse)
2540 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2541 if (depth > MagickMaxRecursionDepth)
2542 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2543 image->filename);
2544 if ((draw_info->primitive == (char *) NULL) ||
2545 (*draw_info->primitive == '\0'))
2546 return(MagickFalse);
2547 if (draw_info->debug != MagickFalse)
2548 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2549 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2550 return(MagickFalse);
2551 if (image->matte == MagickFalse)
2552 {
2553 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2554 if (status == MagickFalse)
2555 return(MagickFalse);
2556 }
2557 primitive=(char *) NULL;
2558 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2559 (*(draw_info->primitive+1) != '-') && (depth == 0))
2560 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2561 else
2562 primitive=AcquireString(draw_info->primitive);
2563 if (primitive == (char *) NULL)
2564 return(MagickFalse);
2565 primitive_extent=(double) strlen(primitive);
2566 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2567 n=0;
2568 /*
2569 Allocate primitive info memory.
2570 */
2571 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2572 if (graphic_context == (DrawInfo **) NULL)
2573 {
2574 primitive=DestroyString(primitive);
2575 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2576 image->filename);
2577 }
2578 number_points=(size_t) PrimitiveExtentPad;
2579 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2580 (number_points+1),sizeof(*primitive_info));
2581 if (primitive_info == (PrimitiveInfo *) NULL)
2582 {
2583 primitive=DestroyString(primitive);
2584 for ( ; n >= 0; n--)
2585 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2586 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2587 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2588 image->filename);
2589 }
2590 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2591 sizeof(*primitive_info));
2592 (void) memset(&mvg_info,0,sizeof(mvg_info));
2593 mvg_info.primitive_info=(&primitive_info);
2594 mvg_info.extent=(&number_points);
2595 mvg_info.exception=(&image->exception);
2596 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2597 graphic_context[n]->viewbox=image->page;
2598 if ((image->page.width == 0) || (image->page.height == 0))
2599 {
2600 graphic_context[n]->viewbox.width=image->columns;
2601 graphic_context[n]->viewbox.height=image->rows;
2602 }
2603 token=AcquireString(primitive);
2604 extent=strlen(token)+MaxTextExtent;
2605 cursor=0.0;
2606 defsDepth=0;
2607 symbolDepth=0;
2608 macros=GetMVGMacros(primitive);
2609 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2610 for (q=primitive; *q != '\0'; )
2611 {
2612 /*
2613 Interpret graphic primitive.
2614 */
2615 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2616 break;
2617 if (*keyword == '\0')
2618 break;
2619 if (*keyword == '#')
2620 {
2621 /*
2622 Comment.
2623 */
2624 while ((*q != '\n') && (*q != '\0'))
2625 q++;
2626 continue;
2627 }
2628 p=q-strlen(keyword)-1;
2629 primitive_type=UndefinedPrimitive;
2630 current=graphic_context[n]->affine;
2631 GetAffineMatrix(&affine);
2632 *token='\0';
2633 switch (*keyword)
2634 {
2635 case ';':
2636 break;
2637 case 'a':
2638 case 'A':
2639 {
2640 if (LocaleCompare("affine",keyword) == 0)
2641 {
2642 (void) GetNextToken(q,&q,extent,token);
2643 affine.sx=GetDrawValue(token,&next_token);
2644 if (token == next_token)
2645 ThrowPointExpectedException(image,token);
2646 (void) GetNextToken(q,&q,extent,token);
2647 if (*token == ',')
2648 (void) GetNextToken(q,&q,extent,token);
2649 affine.rx=GetDrawValue(token,&next_token);
2650 if (token == next_token)
2651 ThrowPointExpectedException(image,token);
2652 (void) GetNextToken(q,&q,extent,token);
2653 if (*token == ',')
2654 (void) GetNextToken(q,&q,extent,token);
2655 affine.ry=GetDrawValue(token,&next_token);
2656 if (token == next_token)
2657 ThrowPointExpectedException(image,token);
2658 (void) GetNextToken(q,&q,extent,token);
2659 if (*token == ',')
2660 (void) GetNextToken(q,&q,extent,token);
2661 affine.sy=GetDrawValue(token,&next_token);
2662 if (token == next_token)
2663 ThrowPointExpectedException(image,token);
2664 (void) GetNextToken(q,&q,extent,token);
2665 if (*token == ',')
2666 (void) GetNextToken(q,&q,extent,token);
2667 affine.tx=GetDrawValue(token,&next_token);
2668 if (token == next_token)
2669 ThrowPointExpectedException(image,token);
2670 (void) GetNextToken(q,&q,extent,token);
2671 if (*token == ',')
2672 (void) GetNextToken(q,&q,extent,token);
2673 affine.ty=GetDrawValue(token,&next_token);
2674 if (token == next_token)
2675 ThrowPointExpectedException(image,token);
2676 break;
2677 }
2678 if (LocaleCompare("arc",keyword) == 0)
2679 {
2680 primitive_type=ArcPrimitive;
2681 break;
2682 }
2683 status=MagickFalse;
2684 break;
2685 }
2686 case 'b':
2687 case 'B':
2688 {
2689 if (LocaleCompare("bezier",keyword) == 0)
2690 {
2691 primitive_type=BezierPrimitive;
2692 break;
2693 }
2694 if (LocaleCompare("border-color",keyword) == 0)
2695 {
2696 (void) GetNextToken(q,&q,extent,token);
2697 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2698 &image->exception);
2699 break;
2700 }
2701 status=MagickFalse;
2702 break;
2703 }
2704 case 'c':
2705 case 'C':
2706 {
2707 if (LocaleCompare("class",keyword) == 0)
2708 {
2709 const char
2710 *mvg_class;
2711
2712 (void) GetNextToken(q,&q,extent,token);
2713 if ((*token == '\0') || (*token == ';'))
2714 {
2715 status=MagickFalse;
2716 break;
2717 }
2718 /*
2719 Identify recursion.
2720 */
2721 for (i=0; i <= n; i++)
2722 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2723 break;
2724 if (i <= n)
2725 break;
2726 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2727 if ((graphic_context[n]->render != MagickFalse) &&
2728 (mvg_class != (const char *) NULL) && (p > primitive))
2729 {
2730 char
2731 *elements;
2732
2733 ssize_t
2734 offset;
2735
2736 /*
2737 Inject class elements in stream.
2738 */
2739 (void) CloneString(&graphic_context[n]->id,token);
2740 offset=(ssize_t) (p-primitive);
2741 elements=AcquireString(primitive);
2742 elements[offset]='\0';
2743 (void) ConcatenateString(&elements,mvg_class);
2744 (void) ConcatenateString(&elements,"\n");
2745 (void) ConcatenateString(&elements,q);
2746 primitive=DestroyString(primitive);
2747 primitive=elements;
2748 q=primitive+offset;
2749 }
2750 break;
2751 }
2752 if (LocaleCompare("clip-path",keyword) == 0)
2753 {
2754 const char
2755 *clip_path;
2756
2757 /*
2758 Take a node from within the MVG document, and duplicate it here.
2759 */
2760 (void) GetNextToken(q,&q,extent,token);
2761 if (*token == '\0')
2762 {
2763 status=MagickFalse;
2764 break;
2765 }
2766 (void) CloneString(&graphic_context[n]->clip_mask,token);
2767 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2768 if (clip_path != (const char *) NULL)
2769 {
2770 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2771 graphic_context[n]->clipping_mask=
2772 DestroyImage(graphic_context[n]->clipping_mask);
2773 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2774 graphic_context[n],token,clip_path,&image->exception);
2775 if (graphic_context[n]->compliance != SVGCompliance)
2776 {
2777 const char
2778 *clip_path;
2779
2780 clip_path=(const char *) GetValueFromSplayTree(macros,
2781 graphic_context[n]->clip_mask);
2782 if (clip_path != (const char *) NULL)
2783 (void) SetImageArtifact(image,
2784 graphic_context[n]->clip_mask,clip_path);
2785 status&=DrawClipPath(image,graphic_context[n],
2786 graphic_context[n]->clip_mask);
2787 }
2788 }
2789 break;
2790 }
2791 if (LocaleCompare("clip-rule",keyword) == 0)
2792 {
2793 ssize_t
2794 fill_rule;
2795
2796 (void) GetNextToken(q,&q,extent,token);
2797 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2798 token);
2799 if (fill_rule == -1)
2800 {
2801 status=MagickFalse;
2802 break;
2803 }
2804 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2805 break;
2806 }
2807 if (LocaleCompare("clip-units",keyword) == 0)
2808 {
2809 ssize_t
2810 clip_units;
2811
2812 (void) GetNextToken(q,&q,extent,token);
2813 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2814 token);
2815 if (clip_units == -1)
2816 {
2817 status=MagickFalse;
2818 break;
2819 }
2820 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2821 if (clip_units == ObjectBoundingBox)
2822 {
2823 GetAffineMatrix(&current);
2824 affine.sx=draw_info->bounds.x2;
2825 affine.sy=draw_info->bounds.y2;
2826 affine.tx=draw_info->bounds.x1;
2827 affine.ty=draw_info->bounds.y1;
2828 break;
2829 }
2830 break;
2831 }
2832 if (LocaleCompare("circle",keyword) == 0)
2833 {
2834 primitive_type=CirclePrimitive;
2835 break;
2836 }
2837 if (LocaleCompare("color",keyword) == 0)
2838 {
2839 primitive_type=ColorPrimitive;
2840 break;
2841 }
2842 if (LocaleCompare("compliance",keyword) == 0)
2843 {
2844 /*
2845 MVG compliance associates a clipping mask with an image; SVG
2846 compliance associates a clipping mask with a graphics context.
2847 */
2848 (void) GetNextToken(q,&q,extent,token);
2849 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2850 MagickComplianceOptions,MagickFalse,token);
2851 break;
2852 }
2853 if (LocaleCompare("currentColor",keyword) == 0)
2854 {
2855 (void) GetNextToken(q,&q,extent,token);
2856 break;
2857 }
2858 status=MagickFalse;
2859 break;
2860 }
2861 case 'd':
2862 case 'D':
2863 {
2864 if (LocaleCompare("decorate",keyword) == 0)
2865 {
2866 ssize_t
2867 decorate;
2868
2869 (void) GetNextToken(q,&q,extent,token);
2870 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2871 token);
2872 if (decorate == -1)
2873 {
2874 status=MagickFalse;
2875 break;
2876 }
2877 graphic_context[n]->decorate=(DecorationType) decorate;
2878 break;
2879 }
2880 if (LocaleCompare("density",keyword) == 0)
2881 {
2882 (void) GetNextToken(q,&q,extent,token);
2883 (void) CloneString(&graphic_context[n]->density,token);
2884 break;
2885 }
2886 if (LocaleCompare("direction",keyword) == 0)
2887 {
2888 ssize_t
2889 direction;
2890
2891 (void) GetNextToken(q,&q,extent,token);
2892 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2893 token);
2894 if (direction == -1)
2895 status=MagickFalse;
2896 else
2897 graphic_context[n]->direction=(DirectionType) direction;
2898 break;
2899 }
2900 status=MagickFalse;
2901 break;
2902 }
2903 case 'e':
2904 case 'E':
2905 {
2906 if (LocaleCompare("ellipse",keyword) == 0)
2907 {
2908 primitive_type=EllipsePrimitive;
2909 break;
2910 }
2911 if (LocaleCompare("encoding",keyword) == 0)
2912 {
2913 (void) GetNextToken(q,&q,extent,token);
2914 (void) CloneString(&graphic_context[n]->encoding,token);
2915 break;
2916 }
2917 status=MagickFalse;
2918 break;
2919 }
2920 case 'f':
2921 case 'F':
2922 {
2923 if (LocaleCompare("fill",keyword) == 0)
2924 {
2925 const char
2926 *mvg_class;
2927
2928 (void) GetNextToken(q,&q,extent,token);
2929 if (graphic_context[n]->clip_path != MagickFalse)
2930 break;
2931 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2932 if (mvg_class != (const char *) NULL)
2933 {
2934 (void) DrawPatternPath(image,draw_info,mvg_class,
2935 &graphic_context[n]->fill_pattern);
2936 break;
2937 }
2938 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2939 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2940 {
2941 (void) DrawPatternPath(image,draw_info,token,
2942 &graphic_context[n]->fill_pattern);
2943 break;
2944 }
2945 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2946 &image->exception);
2947 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2948 graphic_context[n]->fill.opacity=ClampToQuantum(
2949 graphic_context[n]->fill_opacity);
2950 break;
2951 }
2952 if (LocaleCompare("fill-opacity",keyword) == 0)
2953 {
2954 double
2955 opacity;
2956
2957 (void) GetNextToken(q,&q,extent,token);
2958 if (graphic_context[n]->clip_path != MagickFalse)
2959 break;
2960 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2961 opacity=MagickMin(MagickMax(factor*
2962 GetDrawValue(token,&next_token),0.0),1.0);
2963 if (token == next_token)
2964 ThrowPointExpectedException(image,token);
2965 if (graphic_context[n]->compliance == SVGCompliance)
2966 graphic_context[n]->fill_opacity*=(1.0-opacity);
2967 else
2968 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2969 graphic_context[n]->fill_opacity)*(1.0-opacity);
2970 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2971 graphic_context[n]->fill.opacity=(Quantum)
2972 graphic_context[n]->fill_opacity;
2973 else
2974 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2975 QuantumRange*(1.0-opacity));
2976 break;
2977 }
2978 if (LocaleCompare("fill-rule",keyword) == 0)
2979 {
2980 ssize_t
2981 fill_rule;
2982
2983 (void) GetNextToken(q,&q,extent,token);
2984 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2985 token);
2986 if (fill_rule == -1)
2987 {
2988 status=MagickFalse;
2989 break;
2990 }
2991 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2992 break;
2993 }
2994 if (LocaleCompare("font",keyword) == 0)
2995 {
2996 (void) GetNextToken(q,&q,extent,token);
2997 (void) CloneString(&graphic_context[n]->font,token);
2998 if (LocaleCompare("none",token) == 0)
2999 graphic_context[n]->font=(char *) RelinquishMagickMemory(
3000 graphic_context[n]->font);
3001 break;
3002 }
3003 if (LocaleCompare("font-family",keyword) == 0)
3004 {
3005 (void) GetNextToken(q,&q,extent,token);
3006 (void) CloneString(&graphic_context[n]->family,token);
3007 break;
3008 }
3009 if (LocaleCompare("font-size",keyword) == 0)
3010 {
3011 (void) GetNextToken(q,&q,extent,token);
3012 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3013 if (token == next_token)
3014 ThrowPointExpectedException(image,token);
3015 break;
3016 }
3017 if (LocaleCompare("font-stretch",keyword) == 0)
3018 {
3019 ssize_t
3020 stretch;
3021
3022 (void) GetNextToken(q,&q,extent,token);
3023 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3024 if (stretch == -1)
3025 {
3026 status=MagickFalse;
3027 break;
3028 }
3029 graphic_context[n]->stretch=(StretchType) stretch;
3030 break;
3031 }
3032 if (LocaleCompare("font-style",keyword) == 0)
3033 {
3034 ssize_t
3035 style;
3036
3037 (void) GetNextToken(q,&q,extent,token);
3038 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3039 if (style == -1)
3040 {
3041 status=MagickFalse;
3042 break;
3043 }
3044 graphic_context[n]->style=(StyleType) style;
3045 break;
3046 }
3047 if (LocaleCompare("font-weight",keyword) == 0)
3048 {
3049 ssize_t
3050 weight;
3051
3052 (void) GetNextToken(q,&q,extent,token);
3053 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3054 if (weight == -1)
3055 weight=(ssize_t) StringToUnsignedLong(token);
3056 graphic_context[n]->weight=(size_t) weight;
3057 break;
3058 }
3059 status=MagickFalse;
3060 break;
3061 }
3062 case 'g':
3063 case 'G':
3064 {
3065 if (LocaleCompare("gradient-units",keyword) == 0)
3066 {
3067 (void) GetNextToken(q,&q,extent,token);
3068 break;
3069 }
3070 if (LocaleCompare("gravity",keyword) == 0)
3071 {
3072 ssize_t
3073 gravity;
3074
3075 (void) GetNextToken(q,&q,extent,token);
3076 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3077 if (gravity == -1)
3078 {
3079 status=MagickFalse;
3080 break;
3081 }
3082 graphic_context[n]->gravity=(GravityType) gravity;
3083 break;
3084 }
3085 status=MagickFalse;
3086 break;
3087 }
3088 case 'i':
3089 case 'I':
3090 {
3091 if (LocaleCompare("image",keyword) == 0)
3092 {
3093 ssize_t
3094 compose;
3095
3096 primitive_type=ImagePrimitive;
3097 (void) GetNextToken(q,&q,extent,token);
3098 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3099 if (compose == -1)
3100 {
3101 status=MagickFalse;
3102 break;
3103 }
3104 graphic_context[n]->compose=(CompositeOperator) compose;
3105 break;
3106 }
3107 if (LocaleCompare("interline-spacing",keyword) == 0)
3108 {
3109 (void) GetNextToken(q,&q,extent,token);
3110 graphic_context[n]->interline_spacing=GetDrawValue(token,
3111 &next_token);
3112 if (token == next_token)
3113 ThrowPointExpectedException(image,token);
3114 break;
3115 }
3116 if (LocaleCompare("interword-spacing",keyword) == 0)
3117 {
3118 (void) GetNextToken(q,&q,extent,token);
3119 graphic_context[n]->interword_spacing=GetDrawValue(token,
3120 &next_token);
3121 if (token == next_token)
3122 ThrowPointExpectedException(image,token);
3123 break;
3124 }
3125 status=MagickFalse;
3126 break;
3127 }
3128 case 'k':
3129 case 'K':
3130 {
3131 if (LocaleCompare("kerning",keyword) == 0)
3132 {
3133 (void) GetNextToken(q,&q,extent,token);
3134 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3135 if (token == next_token)
3136 ThrowPointExpectedException(image,token);
3137 break;
3138 }
3139 status=MagickFalse;
3140 break;
3141 }
3142 case 'l':
3143 case 'L':
3144 {
3145 if (LocaleCompare("letter-spacing",keyword) == 0)
3146 {
3147 (void) GetNextToken(q,&q,extent,token);
3148 if (IsPoint(token) == MagickFalse)
3149 break;
3150 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3151 clone_info->text=AcquireString(" ");
3152 status&=GetTypeMetrics(image,clone_info,&metrics);
3153 graphic_context[n]->kerning=metrics.width*
3154 GetDrawValue(token,&next_token);
3155 clone_info=DestroyDrawInfo(clone_info);
3156 if (token == next_token)
3157 ThrowPointExpectedException(image,token);
3158 break;
3159 }
3160 if (LocaleCompare("line",keyword) == 0)
3161 {
3162 primitive_type=LinePrimitive;
3163 break;
3164 }
3165 status=MagickFalse;
3166 break;
3167 }
3168 case 'm':
3169 case 'M':
3170 {
3171 if (LocaleCompare("mask",keyword) == 0)
3172 {
3173 const char
3174 *mask_path;
3175
3176 /*
3177 Take a node from within the MVG document, and duplicate it here.
3178 */
3179 (void) GetNextToken(q,&q,extent,token);
3180 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3181 if (mask_path != (const char *) NULL)
3182 {
3183 if (graphic_context[n]->composite_mask != (Image *) NULL)
3184 graphic_context[n]->composite_mask=
3185 DestroyImage(graphic_context[n]->composite_mask);
3186 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3187 graphic_context[n],token,mask_path,&image->exception);
3188 if (graphic_context[n]->compliance != SVGCompliance)
3189 status=SetImageMask(image,graphic_context[n]->composite_mask);
3190 }
3191 break;
3192 }
3193 if (LocaleCompare("matte",keyword) == 0)
3194 {
3195 primitive_type=MattePrimitive;
3196 break;
3197 }
3198 status=MagickFalse;
3199 break;
3200 }
3201 case 'o':
3202 case 'O':
3203 {
3204 if (LocaleCompare("offset",keyword) == 0)
3205 {
3206 (void) GetNextToken(q,&q,extent,token);
3207 break;
3208 }
3209 if (LocaleCompare("opacity",keyword) == 0)
3210 {
3211 double
3212 opacity;
3213
3214 (void) GetNextToken(q,&q,extent,token);
3215 if (graphic_context[n]->clip_path != MagickFalse)
3216 break;
3217 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3218 opacity=1.0-MagickMin(MagickMax(factor*
3219 GetDrawValue(token,&next_token),0.0),1.0);
3220 if (token == next_token)
3221 ThrowPointExpectedException(image,token);
3222 if (graphic_context[n]->compliance == SVGCompliance)
3223 {
3224 graphic_context[n]->fill_opacity*=opacity;
3225 graphic_context[n]->stroke_opacity*=opacity;
3226 }
3227 else
3228 {
3229 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3230 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3231 opacity;
3232 }
3233 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3234 {
3235 graphic_context[n]->fill.opacity=
3236 graphic_context[n]->fill_opacity;
3237 graphic_context[n]->stroke.opacity=
3238 graphic_context[n]->stroke_opacity;
3239 }
3240 else
3241 {
3242 graphic_context[n]->fill.opacity=(MagickRealType)
3243 ClampToQuantum((double) QuantumRange*opacity);
3244 graphic_context[n]->stroke.opacity=(MagickRealType)
3245 ClampToQuantum((double) QuantumRange*opacity);
3246 }
3247 break;
3248 }
3249 status=MagickFalse;
3250 break;
3251 }
3252 case 'p':
3253 case 'P':
3254 {
3255 if (LocaleCompare("path",keyword) == 0)
3256 {
3257 primitive_type=PathPrimitive;
3258 break;
3259 }
3260 if (LocaleCompare("point",keyword) == 0)
3261 {
3262 primitive_type=PointPrimitive;
3263 break;
3264 }
3265 if (LocaleCompare("polyline",keyword) == 0)
3266 {
3267 primitive_type=PolylinePrimitive;
3268 break;
3269 }
3270 if (LocaleCompare("polygon",keyword) == 0)
3271 {
3272 primitive_type=PolygonPrimitive;
3273 break;
3274 }
3275 if (LocaleCompare("pop",keyword) == 0)
3276 {
3277 if (GetNextToken(q,&q,extent,token) < 1)
3278 break;
3279 if (LocaleCompare("class",token) == 0)
3280 break;
3281 if (LocaleCompare("clip-path",token) == 0)
3282 break;
3283 if (LocaleCompare("defs",token) == 0)
3284 {
3285 defsDepth--;
3286 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3287 MagickTrue;
3288 break;
3289 }
3290 if (LocaleCompare("gradient",token) == 0)
3291 break;
3292 if (LocaleCompare("graphic-context",token) == 0)
3293 {
3294 if (n <= 0)
3295 {
3296 (void) ThrowMagickException(&image->exception,
3297 GetMagickModule(),DrawError,
3298 "UnbalancedGraphicContextPushPop","`%s'",token);
3299 status=MagickFalse;
3300 n=0;
3301 break;
3302 }
3303 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3304 (graphic_context[n]->compliance != SVGCompliance))
3305 if (LocaleCompare(graphic_context[n]->clip_mask,
3306 graphic_context[n-1]->clip_mask) != 0)
3307 status=SetImageClipMask(image,(Image *) NULL);
3308 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3309 n--;
3310 break;
3311 }
3312 if (LocaleCompare("mask",token) == 0)
3313 break;
3314 if (LocaleCompare("pattern",token) == 0)
3315 break;
3316 if (LocaleCompare("symbol",token) == 0)
3317 {
3318 symbolDepth--;
3319 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3320 MagickTrue;
3321 break;
3322 }
3323 status=MagickFalse;
3324 break;
3325 }
3326 if (LocaleCompare("push",keyword) == 0)
3327 {
3328 if (GetNextToken(q,&q,extent,token) < 1)
3329 break;
3330 if (LocaleCompare("class",token) == 0)
3331 {
3332 /*
3333 Class context.
3334 */
3335 for (p=q; *q != '\0'; )
3336 {
3337 if (GetNextToken(q,&q,extent,token) < 1)
3338 break;
3339 if (LocaleCompare(token,"pop") != 0)
3340 continue;
3341 (void) GetNextToken(q,(const char **) NULL,extent,token);
3342 if (LocaleCompare(token,"class") != 0)
3343 continue;
3344 break;
3345 }
3346 (void) GetNextToken(q,&q,extent,token);
3347 break;
3348 }
3349 if (LocaleCompare("clip-path",token) == 0)
3350 {
3351 (void) GetNextToken(q,&q,extent,token);
3352 for (p=q; *q != '\0'; )
3353 {
3354 if (GetNextToken(q,&q,extent,token) < 1)
3355 break;
3356 if (LocaleCompare(token,"pop") != 0)
3357 continue;
3358 (void) GetNextToken(q,(const char **) NULL,extent,token);
3359 if (LocaleCompare(token,"clip-path") != 0)
3360 continue;
3361 break;
3362 }
3363 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3364 {
3365 status=MagickFalse;
3366 break;
3367 }
3368 (void) GetNextToken(q,&q,extent,token);
3369 break;
3370 }
3371 if (LocaleCompare("defs",token) == 0)
3372 {
3373 defsDepth++;
3374 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3375 MagickTrue;
3376 break;
3377 }
3378 if (LocaleCompare("gradient",token) == 0)
3379 {
3380 char
3381 key[2*MaxTextExtent],
3382 name[MaxTextExtent],
3383 type[MaxTextExtent];
3384
3385 SegmentInfo
3386 segment;
3387
3388 (void) GetNextToken(q,&q,extent,token);
3389 (void) CopyMagickString(name,token,MaxTextExtent);
3390 (void) GetNextToken(q,&q,extent,token);
3391 (void) CopyMagickString(type,token,MaxTextExtent);
3392 (void) GetNextToken(q,&q,extent,token);
3393 segment.x1=GetDrawValue(token,&next_token);
3394 if (token == next_token)
3395 ThrowPointExpectedException(image,token);
3396 (void) GetNextToken(q,&q,extent,token);
3397 if (*token == ',')
3398 (void) GetNextToken(q,&q,extent,token);
3399 segment.y1=GetDrawValue(token,&next_token);
3400 if (token == next_token)
3401 ThrowPointExpectedException(image,token);
3402 (void) GetNextToken(q,&q,extent,token);
3403 if (*token == ',')
3404 (void) GetNextToken(q,&q,extent,token);
3405 segment.x2=GetDrawValue(token,&next_token);
3406 if (token == next_token)
3407 ThrowPointExpectedException(image,token);
3408 (void) GetNextToken(q,&q,extent,token);
3409 if (*token == ',')
3410 (void) GetNextToken(q,&q,extent,token);
3411 segment.y2=GetDrawValue(token,&next_token);
3412 if (token == next_token)
3413 ThrowPointExpectedException(image,token);
3414 if (LocaleCompare(type,"radial") == 0)
3415 {
3416 (void) GetNextToken(q,&q,extent,token);
3417 if (*token == ',')
3418 (void) GetNextToken(q,&q,extent,token);
3419 }
3420 for (p=q; *q != '\0'; )
3421 {
3422 if (GetNextToken(q,&q,extent,token) < 1)
3423 break;
3424 if (LocaleCompare(token,"pop") != 0)
3425 continue;
3426 (void) GetNextToken(q,(const char **) NULL,extent,token);
3427 if (LocaleCompare(token,"gradient") != 0)
3428 continue;
3429 break;
3430 }
3431 if ((q == (char *) NULL) || (*q == '\0') ||
3432 (p == (char *) NULL) || ((q-4) < p))
3433 {
3434 status=MagickFalse;
3435 break;
3436 }
3437 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3438 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3439 graphic_context[n]->affine.ry*segment.y1+
3440 graphic_context[n]->affine.tx;
3441 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3442 graphic_context[n]->affine.sy*segment.y1+
3443 graphic_context[n]->affine.ty;
3444 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3445 graphic_context[n]->affine.ry*segment.y2+
3446 graphic_context[n]->affine.tx;
3447 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3448 graphic_context[n]->affine.sy*segment.y2+
3449 graphic_context[n]->affine.ty;
3450 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3451 (void) SetImageArtifact(image,key,token);
3452 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3453 (void) SetImageArtifact(image,key,type);
3454 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3455 (void) FormatLocaleString(geometry,MaxTextExtent,
3456 "%gx%g%+.15g%+.15g",
3457 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3458 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3459 bounds.x1,bounds.y1);
3460 (void) SetImageArtifact(image,key,geometry);
3461 (void) GetNextToken(q,&q,extent,token);
3462 break;
3463 }
3464 if (LocaleCompare("graphic-context",token) == 0)
3465 {
3466 n++;
3467 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3468 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3469 if (graphic_context == (DrawInfo **) NULL)
3470 {
3471 (void) ThrowMagickException(&image->exception,
3472 GetMagickModule(),ResourceLimitError,
3473 "MemoryAllocationFailed","`%s'",image->filename);
3474 break;
3475 }
3476 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3477 graphic_context[n-1]);
3478 if (*q == '"')
3479 {
3480 (void) GetNextToken(q,&q,extent,token);
3481 (void) CloneString(&graphic_context[n]->id,token);
3482 }
3483 break;
3484 }
3485 if (LocaleCompare("mask",token) == 0)
3486 {
3487 (void) GetNextToken(q,&q,extent,token);
3488 break;
3489 }
3490 if (LocaleCompare("pattern",token) == 0)
3491 {
3492 RectangleInfo
3493 bounds;
3494
3495 (void) GetNextToken(q,&q,extent,token);
3496 (void) CopyMagickString(name,token,MaxTextExtent);
3497 (void) GetNextToken(q,&q,extent,token);
3498 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3499 &next_token)-0.5));
3500 if (token == next_token)
3501 ThrowPointExpectedException(image,token);
3502 (void) GetNextToken(q,&q,extent,token);
3503 if (*token == ',')
3504 (void) GetNextToken(q,&q,extent,token);
3505 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3506 &next_token)-0.5));
3507 if (token == next_token)
3508 ThrowPointExpectedException(image,token);
3509 (void) GetNextToken(q,&q,extent,token);
3510 if (*token == ',')
3511 (void) GetNextToken(q,&q,extent,token);
3512 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3513 &next_token)+0.5);
3514 if (token == next_token)
3515 ThrowPointExpectedException(image,token);
3516 (void) GetNextToken(q,&q,extent,token);
3517 if (*token == ',')
3518 (void) GetNextToken(q,&q,extent,token);
3519 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3520 &next_token)+0.5);
3521 if (token == next_token)
3522 ThrowPointExpectedException(image,token);
3523 for (p=q; *q != '\0'; )
3524 {
3525 if (GetNextToken(q,&q,extent,token) < 1)
3526 break;
3527 if (LocaleCompare(token,"pop") != 0)
3528 continue;
3529 (void) GetNextToken(q,(const char **) NULL,extent,token);
3530 if (LocaleCompare(token,"pattern") != 0)
3531 continue;
3532 break;
3533 }
3534 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3535 {
3536 status=MagickFalse;
3537 break;
3538 }
3539 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3540 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3541 (void) SetImageArtifact(image,key,token);
3542 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3543 (void) FormatLocaleString(geometry,MaxTextExtent,
3544 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3545 bounds.height,(double) bounds.x,(double) bounds.y);
3546 (void) SetImageArtifact(image,key,geometry);
3547 (void) GetNextToken(q,&q,extent,token);
3548 break;
3549 }
3550 if (LocaleCompare("symbol",token) == 0)
3551 {
3552 symbolDepth++;
3553 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3554 MagickTrue;
3555 break;
3556 }
3557 status=MagickFalse;
3558 break;
3559 }
3560 status=MagickFalse;
3561 break;
3562 }
3563 case 'r':
3564 case 'R':
3565 {
3566 if (LocaleCompare("rectangle",keyword) == 0)
3567 {
3568 primitive_type=RectanglePrimitive;
3569 break;
3570 }
3571 if (LocaleCompare("rotate",keyword) == 0)
3572 {
3573 (void) GetNextToken(q,&q,extent,token);
3574 angle=GetDrawValue(token,&next_token);
3575 if (token == next_token)
3576 ThrowPointExpectedException(image,token);
3577 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3578 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3579 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3580 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3581 break;
3582 }
3583 if (LocaleCompare("roundRectangle",keyword) == 0)
3584 {
3585 primitive_type=RoundRectanglePrimitive;
3586 break;
3587 }
3588 status=MagickFalse;
3589 break;
3590 }
3591 case 's':
3592 case 'S':
3593 {
3594 if (LocaleCompare("scale",keyword) == 0)
3595 {
3596 (void) GetNextToken(q,&q,extent,token);
3597 affine.sx=GetDrawValue(token,&next_token);
3598 if (token == next_token)
3599 ThrowPointExpectedException(image,token);
3600 (void) GetNextToken(q,&q,extent,token);
3601 if (*token == ',')
3602 (void) GetNextToken(q,&q,extent,token);
3603 affine.sy=GetDrawValue(token,&next_token);
3604 if (token == next_token)
3605 ThrowPointExpectedException(image,token);
3606 break;
3607 }
3608 if (LocaleCompare("skewX",keyword) == 0)
3609 {
3610 (void) GetNextToken(q,&q,extent,token);
3611 angle=GetDrawValue(token,&next_token);
3612 if (token == next_token)
3613 ThrowPointExpectedException(image,token);
3614 affine.ry=sin(DegreesToRadians(angle));
3615 break;
3616 }
3617 if (LocaleCompare("skewY",keyword) == 0)
3618 {
3619 (void) GetNextToken(q,&q,extent,token);
3620 angle=GetDrawValue(token,&next_token);
3621 if (token == next_token)
3622 ThrowPointExpectedException(image,token);
3623 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3624 break;
3625 }
3626 if (LocaleCompare("stop-color",keyword) == 0)
3627 {
3628 GradientType
3629 type;
3630
3631 PixelPacket
3632 stop_color;
3633
3634 (void) GetNextToken(q,&q,extent,token);
3635 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3636 type=LinearGradient;
3637 if (draw_info->gradient.type == RadialGradient)
3638 type=RadialGradient;
3639 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3640 start_color=stop_color;
3641 (void) GetNextToken(q,&q,extent,token);
3642 break;
3643 }
3644 if (LocaleCompare("stroke",keyword) == 0)
3645 {
3646 const char
3647 *mvg_class;
3648
3649 (void) GetNextToken(q,&q,extent,token);
3650 if (graphic_context[n]->clip_path != MagickFalse)
3651 break;
3652 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3653 if (mvg_class != (const char *) NULL)
3654 {
3655 (void) DrawPatternPath(image,draw_info,mvg_class,
3656 &graphic_context[n]->stroke_pattern);
3657 break;
3658 }
3659 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3660 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3661 {
3662 (void) DrawPatternPath(image,draw_info,token,
3663 &graphic_context[n]->stroke_pattern);
3664 break;
3665 }
3666 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3667 &image->exception);
3668 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3669 graphic_context[n]->stroke.opacity=ClampToQuantum(
3670 graphic_context[n]->stroke_opacity);
3671 break;
3672 }
3673 if (LocaleCompare("stroke-antialias",keyword) == 0)
3674 {
3675 (void) GetNextToken(q,&q,extent,token);
3676 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3677 MagickTrue : MagickFalse;
3678 break;
3679 }
3680 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3681 {
3682 if (graphic_context[n]->dash_pattern != (double *) NULL)
3683 graphic_context[n]->dash_pattern=(double *)
3684 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3685 if (IsPoint(q) != MagickFalse)
3686 {
3687 const char
3688 *p;
3689
3690 p=q;
3691 (void) GetNextToken(p,&p,extent,token);
3692 if (*token == ',')
3693 (void) GetNextToken(p,&p,extent,token);
3694 for (x=0; IsPoint(token) != MagickFalse; x++)
3695 {
3696 (void) GetNextToken(p,&p,extent,token);
3697 if (*token == ',')
3698 (void) GetNextToken(p,&p,extent,token);
3699 }
3700 graphic_context[n]->dash_pattern=(double *)
3701 AcquireQuantumMemory((size_t) (2*x+2),
3702 sizeof(*graphic_context[n]->dash_pattern));
3703 if (graphic_context[n]->dash_pattern == (double *) NULL)
3704 {
3705 (void) ThrowMagickException(&image->exception,
3706 GetMagickModule(),ResourceLimitError,
3707 "MemoryAllocationFailed","`%s'",image->filename);
3708 status=MagickFalse;
3709 break;
3710 }
3711 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3712 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3713 for (j=0; j < x; j++)
3714 {
3715 (void) GetNextToken(q,&q,extent,token);
3716 if (*token == ',')
3717 (void) GetNextToken(q,&q,extent,token);
3718 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3719 &next_token);
3720 if (token == next_token)
3721 ThrowPointExpectedException(image,token);
3722 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3723 status=MagickFalse;
3724 }
3725 if ((x & 0x01) != 0)
3726 for ( ; j < (2*x); j++)
3727 graphic_context[n]->dash_pattern[j]=
3728 graphic_context[n]->dash_pattern[j-x];
3729 graphic_context[n]->dash_pattern[j]=0.0;
3730 break;
3731 }
3732 (void) GetNextToken(q,&q,extent,token);
3733 break;
3734 }
3735 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3736 {
3737 (void) GetNextToken(q,&q,extent,token);
3738 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3739 if (token == next_token)
3740 ThrowPointExpectedException(image,token);
3741 break;
3742 }
3743 if (LocaleCompare("stroke-linecap",keyword) == 0)
3744 {
3745 ssize_t
3746 linecap;
3747
3748 (void) GetNextToken(q,&q,extent,token);
3749 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3750 if (linecap == -1)
3751 {
3752 status=MagickFalse;
3753 break;
3754 }
3755 graphic_context[n]->linecap=(LineCap) linecap;
3756 break;
3757 }
3758 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3759 {
3760 ssize_t
3761 linejoin;
3762
3763 (void) GetNextToken(q,&q,extent,token);
3764 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3765 token);
3766 if (linejoin == -1)
3767 {
3768 status=MagickFalse;
3769 break;
3770 }
3771 graphic_context[n]->linejoin=(LineJoin) linejoin;
3772 break;
3773 }
3774 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3775 {
3776 (void) GetNextToken(q,&q,extent,token);
3777 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3778 break;
3779 }
3780 if (LocaleCompare("stroke-opacity",keyword) == 0)
3781 {
3782 double
3783 opacity;
3784
3785 (void) GetNextToken(q,&q,extent,token);
3786 if (graphic_context[n]->clip_path != MagickFalse)
3787 break;
3788 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3789 opacity=MagickMin(MagickMax(factor*
3790 GetDrawValue(token,&next_token),0.0),1.0);
3791 if (token == next_token)
3792 ThrowPointExpectedException(image,token);
3793 if (graphic_context[n]->compliance == SVGCompliance)
3794 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3795 else
3796 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3797 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3798 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3799 graphic_context[n]->stroke.opacity=(Quantum)
3800 graphic_context[n]->stroke_opacity;
3801 else
3802 graphic_context[n]->stroke.opacity=ClampToQuantum(
3803 (MagickRealType) QuantumRange*opacity);
3804 break;
3805 }
3806 if (LocaleCompare("stroke-width",keyword) == 0)
3807 {
3808 (void) GetNextToken(q,&q,extent,token);
3809 if (graphic_context[n]->clip_path != MagickFalse)
3810 break;
3811 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3812 if ((token == next_token) ||
3813 (graphic_context[n]->stroke_width < 0.0))
3814 ThrowPointExpectedException(image,token);
3815 break;
3816 }
3817 status=MagickFalse;
3818 break;
3819 }
3820 case 't':
3821 case 'T':
3822 {
3823 if (LocaleCompare("text",keyword) == 0)
3824 {
3825 primitive_type=TextPrimitive;
3826 cursor=0.0;
3827 break;
3828 }
3829 if (LocaleCompare("text-align",keyword) == 0)
3830 {
3831 ssize_t
3832 align;
3833
3834 (void) GetNextToken(q,&q,extent,token);
3835 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3836 if (align == -1)
3837 {
3838 status=MagickFalse;
3839 break;
3840 }
3841 graphic_context[n]->align=(AlignType) align;
3842 break;
3843 }
3844 if (LocaleCompare("text-anchor",keyword) == 0)
3845 {
3846 ssize_t
3847 align;
3848
3849 (void) GetNextToken(q,&q,extent,token);
3850 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3851 if (align == -1)
3852 {
3853 status=MagickFalse;
3854 break;
3855 }
3856 graphic_context[n]->align=(AlignType) align;
3857 break;
3858 }
3859 if (LocaleCompare("text-antialias",keyword) == 0)
3860 {
3861 (void) GetNextToken(q,&q,extent,token);
3862 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3863 MagickTrue : MagickFalse;
3864 break;
3865 }
3866 if (LocaleCompare("text-undercolor",keyword) == 0)
3867 {
3868 (void) GetNextToken(q,&q,extent,token);
3869 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3870 &image->exception);
3871 break;
3872 }
3873 if (LocaleCompare("translate",keyword) == 0)
3874 {
3875 (void) GetNextToken(q,&q,extent,token);
3876 affine.tx=GetDrawValue(token,&next_token);
3877 if (token == next_token)
3878 ThrowPointExpectedException(image,token);
3879 (void) GetNextToken(q,&q,extent,token);
3880 if (*token == ',')
3881 (void) GetNextToken(q,&q,extent,token);
3882 affine.ty=GetDrawValue(token,&next_token);
3883 if (token == next_token)
3884 ThrowPointExpectedException(image,token);
3885 break;
3886 }
3887 status=MagickFalse;
3888 break;
3889 }
3890 case 'u':
3891 case 'U':
3892 {
3893 if (LocaleCompare("use",keyword) == 0)
3894 {
3895 const char
3896 *use;
3897
3898 /*
3899 Get a macro from the MVG document, and "use" it here.
3900 */
3901 (void) GetNextToken(q,&q,extent,token);
3902 use=(const char *) GetValueFromSplayTree(macros,token);
3903 if (use != (const char *) NULL)
3904 {
3905 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3906 (void) CloneString(&clone_info->primitive,use);
3907 status=RenderMVGContent(image,clone_info,depth+1);
3908 clone_info=DestroyDrawInfo(clone_info);
3909 }
3910 break;
3911 }
3912 status=MagickFalse;
3913 break;
3914 }
3915 case 'v':
3916 case 'V':
3917 {
3918 if (LocaleCompare("viewbox",keyword) == 0)
3919 {
3920 (void) GetNextToken(q,&q,extent,token);
3921 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3922 GetDrawValue(token,&next_token)-0.5));
3923 if (token == next_token)
3924 ThrowPointExpectedException(image,token);
3925 (void) GetNextToken(q,&q,extent,token);
3926 if (*token == ',')
3927 (void) GetNextToken(q,&q,extent,token);
3928 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3929 GetDrawValue(token,&next_token)-0.5));
3930 if (token == next_token)
3931 ThrowPointExpectedException(image,token);
3932 (void) GetNextToken(q,&q,extent,token);
3933 if (*token == ',')
3934 (void) GetNextToken(q,&q,extent,token);
3935 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3936 GetDrawValue(token,&next_token)+0.5);
3937 if (token == next_token)
3938 ThrowPointExpectedException(image,token);
3939 (void) GetNextToken(q,&q,extent,token);
3940 if (*token == ',')
3941 (void) GetNextToken(q,&q,extent,token);
3942 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3943 GetDrawValue(token,&next_token)+0.5);
3944 if (token == next_token)
3945 ThrowPointExpectedException(image,token);
3946 break;
3947 }
3948 status=MagickFalse;
3949 break;
3950 }
3951 case 'w':
3952 case 'W':
3953 {
3954 if (LocaleCompare("word-spacing",keyword) == 0)
3955 {
3956 (void) GetNextToken(q,&q,extent,token);
3957 graphic_context[n]->interword_spacing=GetDrawValue(token,
3958 &next_token);
3959 if (token == next_token)
3960 ThrowPointExpectedException(image,token);
3961 break;
3962 }
3963 status=MagickFalse;
3964 break;
3965 }
3966 default:
3967 {
3968 status=MagickFalse;
3969 break;
3970 }
3971 }
3972 if (status == MagickFalse)
3973 break;
3974 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3975 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3976 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3977 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3978 {
3979 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3980 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3981 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3982 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3983 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3984 current.tx;
3985 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3986 current.ty;
3987 }
3988 if (primitive_type == UndefinedPrimitive)
3989 {
3990 if ((draw_info->debug != MagickFalse) && (q > p))
3991 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3992 (q-p-1),p);
3993 continue;
3994 }
3995 /*
3996 Parse the primitive attributes.
3997 */
3998 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3999 if (primitive_info[i].text != (char *) NULL)
4000 primitive_info[i].text=DestroyString(primitive_info[i].text);
4001 i=0;
4002 mvg_info.offset=i;
4003 j=0;
4004 primitive_info[0].point.x=0.0;
4005 primitive_info[0].point.y=0.0;
4006 primitive_info[0].coordinates=0;
4007 primitive_info[0].method=FloodfillMethod;
4008 primitive_info[0].closed_subpath=MagickFalse;
4009 for (x=0; *q != '\0'; x++)
4010 {
4011 /*
4012 Define points.
4013 */
4014 if (IsPoint(q) == MagickFalse)
4015 break;
4016 (void) GetNextToken(q,&q,extent,token);
4017 point.x=GetDrawValue(token,&next_token);
4018 if (token == next_token)
4019 ThrowPointExpectedException(image,token);
4020 (void) GetNextToken(q,&q,extent,token);
4021 if (*token == ',')
4022 (void) GetNextToken(q,&q,extent,token);
4023 point.y=GetDrawValue(token,&next_token);
4024 if (token == next_token)
4025 ThrowPointExpectedException(image,token);
4026 (void) GetNextToken(q,(const char **) NULL,extent,token);
4027 if (*token == ',')
4028 (void) GetNextToken(q,&q,extent,token);
4029 primitive_info[i].primitive=primitive_type;
4030 primitive_info[i].point=point;
4031 primitive_info[i].coordinates=0;
4032 primitive_info[i].method=FloodfillMethod;
4033 primitive_info[i].closed_subpath=MagickFalse;
4034 i++;
4035 mvg_info.offset=i;
4036 if (i < (ssize_t) number_points)
4037 continue;
4038 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4039 primitive_info=(*mvg_info.primitive_info);
4040 }
4041 if (status == MagickFalse)
4042 break;
4043 if (primitive_info[j].text != (char *) NULL)
4044 primitive_info[j].text=DestroyString(primitive_info[j].text);
4045 primitive_info[j].primitive=primitive_type;
4046 primitive_info[j].coordinates=(size_t) x;
4047 primitive_info[j].method=FloodfillMethod;
4048 primitive_info[j].closed_subpath=MagickFalse;
4049 /*
4050 Circumscribe primitive within a circle.
4051 */
4052 bounds.x1=primitive_info[j].point.x;
4053 bounds.y1=primitive_info[j].point.y;
4054 bounds.x2=primitive_info[j].point.x;
4055 bounds.y2=primitive_info[j].point.y;
4056 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4057 {
4058 point=primitive_info[j+k].point;
4059 if (point.x < bounds.x1)
4060 bounds.x1=point.x;
4061 if (point.y < bounds.y1)
4062 bounds.y1=point.y;
4063 if (point.x > bounds.x2)
4064 bounds.x2=point.x;
4065 if (point.y > bounds.y2)
4066 bounds.y2=point.y;
4067 }
4068 /*
4069 Speculate how many points our primitive might consume.
4070 */
4071 coordinates=(double) primitive_info[j].coordinates;
4072 switch (primitive_type)
4073 {
4074 case RectanglePrimitive:
4075 {
4076 coordinates*=5.0;
4077 break;
4078 }
4079 case RoundRectanglePrimitive:
4080 {
4081 double
4082 alpha,
4083 beta,
4084 radius;
4085
4086 alpha=bounds.x2-bounds.x1;
4087 beta=bounds.y2-bounds.y1;
4088 radius=hypot(alpha,beta);
4089 coordinates*=5.0;
4090 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4091 BezierQuantum+360.0;
4092 break;
4093 }
4094 case BezierPrimitive:
4095 {
4096 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4097 break;
4098 }
4099 case PathPrimitive:
4100 {
4101 char
4102 *s,
4103 *t;
4104
4105 (void) GetNextToken(q,&q,extent,token);
4106 coordinates=1.0;
4107 t=token;
4108 for (s=token; *s != '\0'; s=t)
4109 {
4110 double
4111 value;
4112
4113 value=GetDrawValue(s,&t);
4114 (void) value;
4115 if (s == t)
4116 {
4117 t++;
4118 continue;
4119 }
4120 coordinates++;
4121 }
4122 for (s=token; *s != '\0'; s++)
4123 if (strspn(s,"AaCcQqSsTt") != 0)
4124 coordinates+=(20.0*BezierQuantum)+360.0;
4125 break;
4126 }
4127 default:
4128 break;
4129 }
4130 if (status == MagickFalse)
4131 break;
4132 if (((size_t) (i+coordinates)) >= number_points)
4133 {
4134 /*
4135 Resize based on speculative points required by primitive.
4136 */
4137 number_points+=coordinates+1;
4138 if (number_points < (size_t) coordinates)
4139 {
4140 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4141 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4142 image->filename);
4143 break;
4144 }
4145 mvg_info.offset=i;
4146 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4147 primitive_info=(*mvg_info.primitive_info);
4148 }
4149 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4150 primitive_info=(*mvg_info.primitive_info);
4151 if (status == MagickFalse)
4152 break;
4153 mvg_info.offset=j;
4154 switch (primitive_type)
4155 {
4156 case PointPrimitive:
4157 default:
4158 {
4159 if (primitive_info[j].coordinates != 1)
4160 {
4161 status=MagickFalse;
4162 break;
4163 }
4164 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4165 primitive_info=(*mvg_info.primitive_info);
4166 i=(ssize_t) (j+primitive_info[j].coordinates);
4167 break;
4168 }
4169 case LinePrimitive:
4170 {
4171 if (primitive_info[j].coordinates != 2)
4172 {
4173 status=MagickFalse;
4174 break;
4175 }
4176 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4177 primitive_info[j+1].point);
4178 primitive_info=(*mvg_info.primitive_info);
4179 i=(ssize_t) (j+primitive_info[j].coordinates);
4180 break;
4181 }
4182 case RectanglePrimitive:
4183 {
4184 if (primitive_info[j].coordinates != 2)
4185 {
4186 status=MagickFalse;
4187 break;
4188 }
4189 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4190 primitive_info[j+1].point);
4191 primitive_info=(*mvg_info.primitive_info);
4192 i=(ssize_t) (j+primitive_info[j].coordinates);
4193 break;
4194 }
4195 case RoundRectanglePrimitive:
4196 {
4197 if (primitive_info[j].coordinates != 3)
4198 {
4199 status=MagickFalse;
4200 break;
4201 }
4202 if ((primitive_info[j+2].point.x < 0.0) ||
4203 (primitive_info[j+2].point.y < 0.0))
4204 {
4205 status=MagickFalse;
4206 break;
4207 }
4208 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4209 {
4210 status=MagickFalse;
4211 break;
4212 }
4213 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4214 {
4215 status=MagickFalse;
4216 break;
4217 }
4218 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4219 primitive_info[j+1].point,primitive_info[j+2].point);
4220 primitive_info=(*mvg_info.primitive_info);
4221 i=(ssize_t) (j+primitive_info[j].coordinates);
4222 break;
4223 }
4224 case ArcPrimitive:
4225 {
4226 if (primitive_info[j].coordinates != 3)
4227 {
4228 status=MagickFalse;
4229 break;
4230 }
4231 status&=TraceArc(&mvg_info,primitive_info[j].point,
4232 primitive_info[j+1].point,primitive_info[j+2].point);
4233 primitive_info=(*mvg_info.primitive_info);
4234 i=(ssize_t) (j+primitive_info[j].coordinates);
4235 break;
4236 }
4237 case EllipsePrimitive:
4238 {
4239 if (primitive_info[j].coordinates != 3)
4240 {
4241 status=MagickFalse;
4242 break;
4243 }
4244 if ((primitive_info[j+1].point.x < 0.0) ||
4245 (primitive_info[j+1].point.y < 0.0))
4246 {
4247 status=MagickFalse;
4248 break;
4249 }
4250 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4251 primitive_info[j+1].point,primitive_info[j+2].point);
4252 primitive_info=(*mvg_info.primitive_info);
4253 i=(ssize_t) (j+primitive_info[j].coordinates);
4254 break;
4255 }
4256 case CirclePrimitive:
4257 {
4258 if (primitive_info[j].coordinates != 2)
4259 {
4260 status=MagickFalse;
4261 break;
4262 }
4263 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4264 primitive_info[j+1].point);
4265 primitive_info=(*mvg_info.primitive_info);
4266 i=(ssize_t) (j+primitive_info[j].coordinates);
4267 break;
4268 }
4269 case PolylinePrimitive:
4270 {
4271 if (primitive_info[j].coordinates < 1)
4272 {
4273 status=MagickFalse;
4274 break;
4275 }
4276 break;
4277 }
4278 case PolygonPrimitive:
4279 {
4280 if (primitive_info[j].coordinates < 3)
4281 {
4282 status=MagickFalse;
4283 break;
4284 }
4285 primitive_info[i]=primitive_info[j];
4286 primitive_info[i].coordinates=0;
4287 primitive_info[j].coordinates++;
4288 primitive_info[j].closed_subpath=MagickTrue;
4289 i++;
4290 break;
4291 }
4292 case BezierPrimitive:
4293 {
4294 if (primitive_info[j].coordinates < 3)
4295 {
4296 status=MagickFalse;
4297 break;
4298 }
4299 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4300 primitive_info=(*mvg_info.primitive_info);
4301 i=(ssize_t) (j+primitive_info[j].coordinates);
4302 break;
4303 }
4304 case PathPrimitive:
4305 {
4306 coordinates=(double) TracePath(image,&mvg_info,token);
4307 primitive_info=(*mvg_info.primitive_info);
4308 if (coordinates < 0.0)
4309 {
4310 status=MagickFalse;
4311 break;
4312 }
4313 i=(ssize_t) (j+coordinates);
4314 break;
4315 }
4316 case ColorPrimitive:
4317 case MattePrimitive:
4318 {
4319 ssize_t
4320 method;
4321
4322 if (primitive_info[j].coordinates != 1)
4323 {
4324 status=MagickFalse;
4325 break;
4326 }
4327 (void) GetNextToken(q,&q,extent,token);
4328 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4329 if (method == -1)
4330 {
4331 status=MagickFalse;
4332 break;
4333 }
4334 primitive_info[j].method=(PaintMethod) method;
4335 break;
4336 }
4337 case TextPrimitive:
4338 {
4339 char
4340 geometry[MagickPathExtent];
4341
4342 if (primitive_info[j].coordinates != 1)
4343 {
4344 status=MagickFalse;
4345 break;
4346 }
4347 if (*token != ',')
4348 (void) GetNextToken(q,&q,extent,token);
4349 (void) CloneString(&primitive_info[j].text,token);
4350 /*
4351 Compute text cursor offset.
4352 */
4353 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4354 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4355 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4356 {
4357 mvg_info.point=primitive_info->point;
4358 primitive_info->point.x+=cursor;
4359 }
4360 else
4361 {
4362 mvg_info.point=primitive_info->point;
4363 cursor=0.0;
4364 }
4365 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4366 primitive_info->point.x,primitive_info->point.y);
4367 clone_info->render=MagickFalse;
4368 clone_info->text=AcquireString(token);
4369 status&=GetTypeMetrics(image,clone_info,&metrics);
4370 clone_info=DestroyDrawInfo(clone_info);
4371 cursor+=metrics.width;
4372 if (graphic_context[n]->compliance != SVGCompliance)
4373 cursor=0.0;
4374 break;
4375 }
4376 case ImagePrimitive:
4377 {
4378 if (primitive_info[j].coordinates != 2)
4379 {
4380 status=MagickFalse;
4381 break;
4382 }
4383 (void) GetNextToken(q,&q,extent,token);
4384 (void) CloneString(&primitive_info[j].text,token);
4385 break;
4386 }
4387 }
4388 mvg_info.offset=i;
4389 if (status == 0)
4390 break;
4391 primitive_info[i].primitive=UndefinedPrimitive;
4392 if ((draw_info->debug != MagickFalse) && (q > p))
4393 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4394 /*
4395 Sanity check.
4396 */
4397 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4398 &graphic_context[n]->affine));
4399 primitive_info=(*mvg_info.primitive_info);
4400 if (status == 0)
4401 break;
4402 status&=CheckPrimitiveExtent(&mvg_info,(double)
4403 graphic_context[n]->stroke_width);
4404 primitive_info=(*mvg_info.primitive_info);
4405 if (status == 0)
4406 break;
4407 if (i == 0)
4408 continue;
4409 /*
4410 Transform points.
4411 */
4412 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4413 {
4414 point=primitive_info[i].point;
4415 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4416 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4417 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4418 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4419 point=primitive_info[i].point;
4420 if (point.x < graphic_context[n]->bounds.x1)
4421 graphic_context[n]->bounds.x1=point.x;
4422 if (point.y < graphic_context[n]->bounds.y1)
4423 graphic_context[n]->bounds.y1=point.y;
4424 if (point.x > graphic_context[n]->bounds.x2)
4425 graphic_context[n]->bounds.x2=point.x;
4426 if (point.y > graphic_context[n]->bounds.y2)
4427 graphic_context[n]->bounds.y2=point.y;
4428 if (primitive_info[i].primitive == ImagePrimitive)
4429 break;
4430 if (i >= (ssize_t) number_points)
4431 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4432 }
4433 if (graphic_context[n]->render != MagickFalse)
4434 {
4435 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4436 (graphic_context[n]->clip_mask != (char *) NULL) &&
4437 (LocaleCompare(graphic_context[n]->clip_mask,
4438 graphic_context[n-1]->clip_mask) != 0))
4439 {
4440 const char
4441 *clip_path;
4442
4443 clip_path=(const char *) GetValueFromSplayTree(macros,
4444 graphic_context[n]->clip_mask);
4445 if (clip_path != (const char *) NULL)
4446 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4447 clip_path);
4448 status&=DrawClipPath(image,graphic_context[n],
4449 graphic_context[n]->clip_mask);
4450 }
4451 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4452 }
4453 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4454 primitive_extent);
4455 if (proceed == MagickFalse)
4456 break;
4457 if (status == 0)
4458 break;
4459 }
4460 if (draw_info->debug != MagickFalse)
4461 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4462 /*
4463 Relinquish resources.
4464 */
4465 macros=DestroySplayTree(macros);
4466 token=DestroyString(token);
4467 if (primitive_info != (PrimitiveInfo *) NULL)
4468 {
4469 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4470 if (primitive_info[i].text != (char *) NULL)
4471 primitive_info[i].text=DestroyString(primitive_info[i].text);
4472 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4473 }
4474 primitive=DestroyString(primitive);
4475 for ( ; n >= 0; n--)
4476 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4477 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4478 if (status == MagickFalse)
4479 ThrowBinaryImageException(DrawError,
4480 "NonconformingDrawingPrimitiveDefinition",keyword);
4481 return(status != 0 ? MagickTrue : MagickFalse);
4482}
4483
4484MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4485{
4486 return(RenderMVGContent(image,draw_info,0));
4487}
4488␌
4489/*
4490%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4491% %
4492% %
4493% %
4494% D r a w P a t t e r n P a t h %
4495% %
4496% %
4497% %
4498%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4499%
4500% DrawPatternPath() draws a pattern.
4501%
4502% The format of the DrawPatternPath method is:
4503%
4504% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4505% const char *name,Image **pattern)
4506%
4507% A description of each parameter follows:
4508%
4509% o image: the image.
4510%
4511% o draw_info: the draw info.
4512%
4513% o name: the pattern name.
4514%
4515% o image: the image.
4516%
4517*/
4518MagickExport MagickBooleanType DrawPatternPath(Image *image,
4519 const DrawInfo *draw_info,const char *name,Image **pattern)
4520{
4521 char
4522 property[MaxTextExtent];
4523
4524 const char
4525 *geometry,
4526 *path,
4527 *type;
4528
4529 DrawInfo
4530 *clone_info;
4531
4532 ImageInfo
4533 *image_info;
4534
4535 MagickBooleanType
4536 status;
4537
4538 assert(image != (Image *) NULL);
4539 assert(image->signature == MagickCoreSignature);
4540 assert(draw_info != (const DrawInfo *) NULL);
4541 if (IsEventLogging() != MagickFalse)
4542 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4543 assert(name != (const char *) NULL);
4544 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4545 path=GetImageArtifact(image,property);
4546 if (path == (const char *) NULL)
4547 return(MagickFalse);
4548 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4549 geometry=GetImageArtifact(image,property);
4550 if (geometry == (const char *) NULL)
4551 return(MagickFalse);
4552 if ((*pattern) != (Image *) NULL)
4553 *pattern=DestroyImage(*pattern);
4554 image_info=AcquireImageInfo();
4555 image_info->size=AcquireString(geometry);
4556 *pattern=AcquireImage(image_info);
4557 image_info=DestroyImageInfo(image_info);
4558 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4559 &image->exception);
4560 (void) SetImageBackgroundColor(*pattern);
4561 if (draw_info->debug != MagickFalse)
4562 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4563 "begin pattern-path %s %s",name,geometry);
4564 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4565 if (clone_info->fill_pattern != (Image *) NULL)
4566 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4567 if (clone_info->stroke_pattern != (Image *) NULL)
4568 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4569 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4570 type=GetImageArtifact(image,property);
4571 if (type != (const char *) NULL)
4572 clone_info->gradient.type=(GradientType) ParseCommandOption(
4573 MagickGradientOptions,MagickFalse,type);
4574 (void) CloneString(&clone_info->primitive,path);
4575 status=RenderMVGContent(*pattern,clone_info,0);
4576 clone_info=DestroyDrawInfo(clone_info);
4577 if (draw_info->debug != MagickFalse)
4578 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4579 return(status);
4580}
4581␌
4582/*
4583%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4584% %
4585% %
4586% %
4587+ D r a w P o l y g o n P r i m i t i v e %
4588% %
4589% %
4590% %
4591%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4592%
4593% DrawPolygonPrimitive() draws a polygon on the image.
4594%
4595% The format of the DrawPolygonPrimitive method is:
4596%
4597% MagickBooleanType DrawPolygonPrimitive(Image *image,
4598% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4599%
4600% A description of each parameter follows:
4601%
4602% o image: the image.
4603%
4604% o draw_info: the draw info.
4605%
4606% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4607%
4608*/
4609
4610static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4611{
4612 ssize_t
4613 i;
4614
4615 assert(polygon_info != (PolygonInfo **) NULL);
4616 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4617 if (polygon_info[i] != (PolygonInfo *) NULL)
4618 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4619 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4620 return(polygon_info);
4621}
4622
4623static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4624 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4625{
4626 PathInfo
4627 *magick_restrict path_info;
4628
4629 PolygonInfo
4630 **polygon_info;
4631
4632 size_t
4633 number_threads;
4634
4635 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4636 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4637 sizeof(*polygon_info));
4638 if (polygon_info == (PolygonInfo **) NULL)
4639 {
4640 (void) ThrowMagickException(exception,GetMagickModule(),
4641 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4642 return((PolygonInfo **) NULL);
4643 }
4644 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4645 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4646 if (path_info == (PathInfo *) NULL)
4647 return(DestroyPolygonTLS(polygon_info));
4648 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4649 if (polygon_info[0] == (PolygonInfo *) NULL)
4650 {
4651 (void) ThrowMagickException(exception,GetMagickModule(),
4652 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4653 return(DestroyPolygonTLS(polygon_info));
4654 }
4655 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4656 return(polygon_info);
4657}
4658
4659static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4660 const size_t number_threads,ExceptionInfo *exception)
4661{
4662 ssize_t
4663 i;
4664
4665 for (i=1; i < (ssize_t) number_threads; i++)
4666 {
4667 EdgeInfo
4668 *edge_info;
4669
4670 ssize_t
4671 j;
4672
4673 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4674 sizeof(*polygon_info[i]));
4675 if (polygon_info[i] == (PolygonInfo *) NULL)
4676 {
4677 (void) ThrowMagickException(exception,GetMagickModule(),
4678 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4679 return(MagickFalse);
4680 }
4681 polygon_info[i]->number_edges=0;
4682 edge_info=polygon_info[0]->edges;
4683 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4684 polygon_info[0]->number_edges,sizeof(*edge_info));
4685 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4686 {
4687 (void) ThrowMagickException(exception,GetMagickModule(),
4688 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4689 return(MagickFalse);
4690 }
4691 (void) memcpy(polygon_info[i]->edges,edge_info,
4692 polygon_info[0]->number_edges*sizeof(*edge_info));
4693 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4694 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4695 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4696 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4697 {
4698 edge_info=polygon_info[0]->edges+j;
4699 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4700 edge_info->number_points,sizeof(*edge_info));
4701 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4702 {
4703 (void) ThrowMagickException(exception,GetMagickModule(),
4704 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4705 return(MagickFalse);
4706 }
4707 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4708 edge_info->number_points*sizeof(*edge_info->points));
4709 }
4710 }
4711 return(MagickTrue);
4712}
4713
4714static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4715{
4716 assert(edge < (ssize_t) polygon_info->number_edges);
4717 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4718 polygon_info->edges[edge].points);
4719 polygon_info->number_edges--;
4720 if (edge < (ssize_t) polygon_info->number_edges)
4721 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4722 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4723 return(polygon_info->number_edges);
4724}
4725
4726static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4727 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4728 const ssize_t y,double *stroke_opacity)
4729{
4730 double
4731 alpha,
4732 beta,
4733 distance,
4734 subpath_opacity;
4735
4736 PointInfo
4737 delta;
4738
4739 EdgeInfo
4740 *p;
4741
4742 const PointInfo
4743 *q;
4744
4745 ssize_t
4746 i;
4747
4748 ssize_t
4749 j,
4750 winding_number;
4751
4752 /*
4753 Compute fill & stroke opacity for this (x,y) point.
4754 */
4755 *stroke_opacity=0.0;
4756 subpath_opacity=0.0;
4757 p=polygon_info->edges;
4758 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4759 {
4760 if ((double) y <= (p->bounds.y1-mid-0.5))
4761 break;
4762 if ((double) y > (p->bounds.y2+mid+0.5))
4763 {
4764 p--;
4765 (void) DestroyEdge(polygon_info,j--);
4766 continue;
4767 }
4768 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4769 ((double) x > (p->bounds.x2+mid+0.5)))
4770 continue;
4771 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4772 for ( ; i < (ssize_t) p->number_points; i++)
4773 {
4774 if ((double) y <= (p->points[i-1].y-mid-0.5))
4775 break;
4776 if ((double) y > (p->points[i].y+mid+0.5))
4777 continue;
4778 if (p->scanline != (double) y)
4779 {
4780 p->scanline=(double) y;
4781 p->highwater=(size_t) i;
4782 }
4783 /*
4784 Compute distance between a point and an edge.
4785 */
4786 q=p->points+i-1;
4787 delta.x=(q+1)->x-q->x;
4788 delta.y=(q+1)->y-q->y;
4789 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4790 if (beta <= 0.0)
4791 {
4792 delta.x=(double) x-q->x;
4793 delta.y=(double) y-q->y;
4794 distance=delta.x*delta.x+delta.y*delta.y;
4795 }
4796 else
4797 {
4798 alpha=delta.x*delta.x+delta.y*delta.y;
4799 if (beta >= alpha)
4800 {
4801 delta.x=(double) x-(q+1)->x;
4802 delta.y=(double) y-(q+1)->y;
4803 distance=delta.x*delta.x+delta.y*delta.y;
4804 }
4805 else
4806 {
4807 alpha=PerceptibleReciprocal(alpha);
4808 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4809 distance=alpha*beta*beta;
4810 }
4811 }
4812 /*
4813 Compute stroke & subpath opacity.
4814 */
4815 beta=0.0;
4816 if (p->ghostline == MagickFalse)
4817 {
4818 alpha=mid+0.5;
4819 if ((*stroke_opacity < 1.0) &&
4820 (distance <= ((alpha+0.25)*(alpha+0.25))))
4821 {
4822 alpha=mid-0.5;
4823 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4824 *stroke_opacity=1.0;
4825 else
4826 {
4827 beta=1.0;
4828 if (fabs(distance-1.0) >= MagickEpsilon)
4829 beta=sqrt((double) distance);
4830 alpha=beta-mid-0.5;
4831 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4832 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4833 }
4834 }
4835 }
4836 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4837 continue;
4838 if (distance <= 0.0)
4839 {
4840 subpath_opacity=1.0;
4841 continue;
4842 }
4843 if (distance > 1.0)
4844 continue;
4845 if (fabs(beta) < MagickEpsilon)
4846 {
4847 beta=1.0;
4848 if (fabs(distance-1.0) >= MagickEpsilon)
4849 beta=sqrt(distance);
4850 }
4851 alpha=beta-1.0;
4852 if (subpath_opacity < (alpha*alpha))
4853 subpath_opacity=alpha*alpha;
4854 }
4855 }
4856 /*
4857 Compute fill opacity.
4858 */
4859 if (fill == MagickFalse)
4860 return(0.0);
4861 if (subpath_opacity >= 1.0)
4862 return(1.0);
4863 /*
4864 Determine winding number.
4865 */
4866 winding_number=0;
4867 p=polygon_info->edges;
4868 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4869 {
4870 if ((double) y <= p->bounds.y1)
4871 break;
4872 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4873 continue;
4874 if ((double) x > p->bounds.x2)
4875 {
4876 winding_number+=p->direction != 0 ? 1 : -1;
4877 continue;
4878 }
4879 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4880 for ( ; i < (ssize_t) (p->number_points-1); i++)
4881 if ((double) y <= p->points[i].y)
4882 break;
4883 q=p->points+i-1;
4884 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4885 winding_number+=p->direction != 0 ? 1 : -1;
4886 }
4887 if (fill_rule != NonZeroRule)
4888 {
4889 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4890 return(1.0);
4891 }
4892 else
4893 if (MagickAbsoluteValue(winding_number) != 0)
4894 return(1.0);
4895 return(subpath_opacity);
4896}
4897
4898static MagickBooleanType DrawPolygonPrimitive(Image *image,
4899 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4900{
4901 typedef struct _ExtentInfo
4902 {
4903 ssize_t
4904 x1,
4905 y1,
4906 x2,
4907 y2;
4908 } ExtentInfo;
4909
4910 CacheView
4911 *image_view;
4912
4913 const char
4914 *artifact;
4915
4916 double
4917 mid;
4918
4919 ExceptionInfo
4920 *exception;
4921
4922 ExtentInfo
4923 poly_extent;
4924
4925 MagickBooleanType
4926 fill,
4927 status;
4928
4929 PolygonInfo
4930 **magick_restrict polygon_info;
4931
4932 EdgeInfo
4933 *p;
4934
4935 SegmentInfo
4936 bounds;
4937
4938 size_t
4939 number_threads = 1;
4940
4941 ssize_t
4942 i,
4943 y;
4944
4945 assert(image != (Image *) NULL);
4946 assert(image->signature == MagickCoreSignature);
4947 assert(draw_info != (DrawInfo *) NULL);
4948 assert(draw_info->signature == MagickCoreSignature);
4949 assert(primitive_info != (PrimitiveInfo *) NULL);
4950 if (IsEventLogging() != MagickFalse)
4951 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4952 if (primitive_info->coordinates <= 1)
4953 return(MagickTrue);
4954 /*
4955 Compute bounding box.
4956 */
4957 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4958 if (polygon_info == (PolygonInfo **) NULL)
4959 return(MagickFalse);
4960 if (draw_info->debug != MagickFalse)
4961 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4962 fill=(primitive_info->method == FillToBorderMethod) ||
4963 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4964 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4965 bounds=polygon_info[0]->edges[0].bounds;
4966 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4967 if (IsStringTrue(artifact) != MagickFalse)
4968 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4969 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4970 {
4971 p=polygon_info[0]->edges+i;
4972 if (p->bounds.x1 < bounds.x1)
4973 bounds.x1=p->bounds.x1;
4974 if (p->bounds.y1 < bounds.y1)
4975 bounds.y1=p->bounds.y1;
4976 if (p->bounds.x2 > bounds.x2)
4977 bounds.x2=p->bounds.x2;
4978 if (p->bounds.y2 > bounds.y2)
4979 bounds.y2=p->bounds.y2;
4980 }
4981 bounds.x1-=(mid+1.0);
4982 bounds.y1-=(mid+1.0);
4983 bounds.x2+=(mid+1.0);
4984 bounds.y2+=(mid+1.0);
4985 if ((bounds.x1 >= (double) image->columns) ||
4986 (bounds.y1 >= (double) image->rows) ||
4987 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4988 {
4989 polygon_info=DestroyPolygonTLS(polygon_info);
4990 return(MagickTrue); /* virtual polygon */
4991 }
4992 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4993 (double) image->columns-1.0 : bounds.x1;
4994 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4995 (double) image->rows-1.0 : bounds.y1;
4996 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4997 (double) image->columns-1.0 : bounds.x2;
4998 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4999 (double) image->rows-1.0 : bounds.y2;
5000 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5001 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5002 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5003 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5004 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5005 poly_extent.y1+1,1);
5006 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5007 if (status == MagickFalse)
5008 {
5009 polygon_info=DestroyPolygonTLS(polygon_info);
5010 return(status);
5011 }
5012 status=MagickTrue;
5013 exception=(&image->exception);
5014 image_view=AcquireAuthenticCacheView(image,exception);
5015 if ((primitive_info->coordinates == 1) ||
5016 (polygon_info[0]->number_edges == 0))
5017 {
5018 /*
5019 Draw point.
5020 */
5021#if defined(MAGICKCORE_OPENMP_SUPPORT)
5022 #pragma omp parallel for schedule(static) shared(status) \
5023 num_threads(number_threads)
5024#endif
5025 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5026 {
5027 MagickBooleanType
5028 sync;
5029
5030 PixelPacket
5031 *magick_restrict q;
5032
5033 ssize_t
5034 x;
5035
5036 if (status == MagickFalse)
5037 continue;
5038 x=poly_extent.x1;
5039 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5040 x+1),1,exception);
5041 if (q == (PixelPacket *) NULL)
5042 {
5043 status=MagickFalse;
5044 continue;
5045 }
5046 for ( ; x <= poly_extent.x2; x++)
5047 {
5048 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5049 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5050 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5051 q++;
5052 }
5053 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5054 if (sync == MagickFalse)
5055 status=MagickFalse;
5056 }
5057 image_view=DestroyCacheView(image_view);
5058 polygon_info=DestroyPolygonTLS(polygon_info);
5059 if (draw_info->debug != MagickFalse)
5060 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5061 " end draw-polygon");
5062 return(status);
5063 }
5064 /*
5065 Draw polygon or line.
5066 */
5067 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5068 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5069#if defined(MAGICKCORE_OPENMP_SUPPORT)
5070 #pragma omp parallel for schedule(static) shared(status) \
5071 num_threads(number_threads)
5072#endif
5073 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5074 {
5075 const int
5076 id = GetOpenMPThreadId();
5077
5078 PixelPacket
5079 fill_color,
5080 stroke_color;
5081
5082 PixelPacket
5083 *magick_restrict q;
5084
5085 ssize_t
5086 x;
5087
5088 if (status == MagickFalse)
5089 continue;
5090 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5091 (poly_extent.x2-poly_extent.x1+1),1,exception);
5092 if (q == (PixelPacket *) NULL)
5093 {
5094 status=MagickFalse;
5095 continue;
5096 }
5097 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5098 {
5099 double
5100 fill_opacity,
5101 stroke_opacity;
5102
5103 /*
5104 Fill and/or stroke.
5105 */
5106 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5107 draw_info->fill_rule,x,y,&stroke_opacity);
5108 if (draw_info->stroke_antialias == MagickFalse)
5109 {
5110 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5111 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5112 }
5113 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5114 &fill_color);
5115 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5116 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5117 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5118 (MagickRealType) q->opacity,q);
5119 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5120 &stroke_color);
5121 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5122 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5123 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5124 (MagickRealType) q->opacity,q);
5125 q++;
5126 }
5127 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5128 status=MagickFalse;
5129 }
5130 image_view=DestroyCacheView(image_view);
5131 polygon_info=DestroyPolygonTLS(polygon_info);
5132 if (draw_info->debug != MagickFalse)
5133 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5134 return(status);
5135}
5136␌
5137/*
5138%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5139% %
5140% %
5141% %
5142% D r a w P r i m i t i v e %
5143% %
5144% %
5145% %
5146%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5147%
5148% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5149%
5150% The format of the DrawPrimitive method is:
5151%
5152% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5153% PrimitiveInfo *primitive_info)
5154%
5155% A description of each parameter follows:
5156%
5157% o image: the image.
5158%
5159% o draw_info: the draw info.
5160%
5161% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5162%
5163*/
5164static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5165{
5166 const char
5167 *methods[] =
5168 {
5169 "point",
5170 "replace",
5171 "floodfill",
5172 "filltoborder",
5173 "reset",
5174 "?"
5175 };
5176
5177 PointInfo
5178 p,
5179 q,
5180 point;
5181
5182 ssize_t
5183 i,
5184 x;
5185
5186 ssize_t
5187 coordinates,
5188 y;
5189
5190 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5191 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5192 switch (primitive_info->primitive)
5193 {
5194 case PointPrimitive:
5195 {
5196 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5197 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5198 methods[primitive_info->method]);
5199 return;
5200 }
5201 case ColorPrimitive:
5202 {
5203 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5204 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5205 methods[primitive_info->method]);
5206 return;
5207 }
5208 case MattePrimitive:
5209 {
5210 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5211 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5212 methods[primitive_info->method]);
5213 return;
5214 }
5215 case TextPrimitive:
5216 {
5217 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5218 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5219 return;
5220 }
5221 case ImagePrimitive:
5222 {
5223 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5224 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5225 return;
5226 }
5227 default:
5228 break;
5229 }
5230 coordinates=0;
5231 p=primitive_info[0].point;
5232 q.x=(-1.0);
5233 q.y=(-1.0);
5234 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5235 {
5236 point=primitive_info[i].point;
5237 if (coordinates <= 0)
5238 {
5239 coordinates=(ssize_t) primitive_info[i].coordinates;
5240 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5241 " begin open (%.20g)",(double) coordinates);
5242 p=point;
5243 }
5244 point=primitive_info[i].point;
5245 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5246 (fabs(q.y-point.y) >= MagickEpsilon))
5247 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5248 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5249 else
5250 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5251 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5252 q=point;
5253 coordinates--;
5254 if (coordinates > 0)
5255 continue;
5256 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5257 (fabs(p.y-point.y) >= MagickEpsilon))
5258 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5259 (double) coordinates);
5260 else
5261 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5262 (double) coordinates);
5263 }
5264}
5265
5266MagickExport MagickBooleanType DrawPrimitive(Image *image,
5267 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5268{
5269 CacheView
5270 *image_view;
5271
5272 ExceptionInfo
5273 *exception;
5274
5275 MagickStatusType
5276 status;
5277
5278 ssize_t
5279 i,
5280 x;
5281
5282 ssize_t
5283 y;
5284
5285 if (draw_info->debug != MagickFalse)
5286 {
5287 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5288 " begin draw-primitive");
5289 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5290 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5291 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5292 draw_info->affine.tx,draw_info->affine.ty);
5293 }
5294 exception=(&image->exception);
5295 status=MagickTrue;
5296 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5297 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5298 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5299 status=SetImageColorspace(image,sRGBColorspace);
5300 if (draw_info->compliance == SVGCompliance)
5301 {
5302 status&=SetImageClipMask(image,draw_info->clipping_mask);
5303 status&=SetImageMask(image,draw_info->composite_mask);
5304 }
5305 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5306 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5307 image_view=AcquireAuthenticCacheView(image,exception);
5308 switch (primitive_info->primitive)
5309 {
5310 case ColorPrimitive:
5311 {
5312 switch (primitive_info->method)
5313 {
5314 case PointMethod:
5315 default:
5316 {
5317 PixelPacket
5318 *q;
5319
5320 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5321 if (q == (PixelPacket *) NULL)
5322 break;
5323 (void) GetFillColor(draw_info,x,y,q);
5324 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5325 break;
5326 }
5327 case ReplaceMethod:
5328 {
5329 PixelPacket
5330 target;
5331
5332 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5333 for (y=0; y < (ssize_t) image->rows; y++)
5334 {
5335 PixelPacket
5336 *magick_restrict q;
5337
5338 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5339 exception);
5340 if (q == (PixelPacket *) NULL)
5341 break;
5342 for (x=0; x < (ssize_t) image->columns; x++)
5343 {
5344 if (IsColorSimilar(image,q,&target) == MagickFalse)
5345 {
5346 q++;
5347 continue;
5348 }
5349 (void) GetFillColor(draw_info,x,y,q);
5350 q++;
5351 }
5352 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5353 if (status == MagickFalse)
5354 break;
5355 }
5356 break;
5357 }
5358 case FloodfillMethod:
5359 case FillToBorderMethod:
5360 {
5361 MagickPixelPacket
5362 target;
5363
5364 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5365 if (primitive_info->method == FillToBorderMethod)
5366 {
5367 target.red=(MagickRealType) draw_info->border_color.red;
5368 target.green=(MagickRealType) draw_info->border_color.green;
5369 target.blue=(MagickRealType) draw_info->border_color.blue;
5370 }
5371 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5372 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5373 MagickTrue);
5374 break;
5375 }
5376 case ResetMethod:
5377 {
5378 for (y=0; y < (ssize_t) image->rows; y++)
5379 {
5380 PixelPacket
5381 *magick_restrict q;
5382
5383 ssize_t
5384 x;
5385
5386 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5387 exception);
5388 if (q == (PixelPacket *) NULL)
5389 break;
5390 for (x=0; x < (ssize_t) image->columns; x++)
5391 {
5392 (void) GetFillColor(draw_info,x,y,q);
5393 q++;
5394 }
5395 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5396 if (status == MagickFalse)
5397 break;
5398 }
5399 break;
5400 }
5401 }
5402 break;
5403 }
5404 case MattePrimitive:
5405 {
5406 if (image->matte == MagickFalse)
5407 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5408 switch (primitive_info->method)
5409 {
5410 case PointMethod:
5411 default:
5412 {
5413 PixelPacket
5414 pixel;
5415
5416 PixelPacket
5417 *q;
5418
5419 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5420 if (q == (PixelPacket *) NULL)
5421 break;
5422 (void) GetFillColor(draw_info,x,y,&pixel);
5423 SetPixelOpacity(q,pixel.opacity);
5424 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5425 break;
5426 }
5427 case ReplaceMethod:
5428 {
5429 PixelPacket
5430 pixel,
5431 target;
5432
5433 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5434 for (y=0; y < (ssize_t) image->rows; y++)
5435 {
5436 PixelPacket
5437 *magick_restrict q;
5438
5439 ssize_t
5440 x;
5441
5442 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5443 exception);
5444 if (q == (PixelPacket *) NULL)
5445 break;
5446 for (x=0; x < (ssize_t) image->columns; x++)
5447 {
5448 if (IsColorSimilar(image,q,&target) == MagickFalse)
5449 {
5450 q++;
5451 continue;
5452 }
5453 (void) GetFillColor(draw_info,x,y,&pixel);
5454 SetPixelOpacity(q,pixel.opacity);
5455 q++;
5456 }
5457 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5458 if (status == MagickFalse)
5459 break;
5460 }
5461 break;
5462 }
5463 case FloodfillMethod:
5464 case FillToBorderMethod:
5465 {
5466 MagickPixelPacket
5467 target;
5468
5469 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5470 if (primitive_info->method == FillToBorderMethod)
5471 {
5472 target.red=(MagickRealType) draw_info->border_color.red;
5473 target.green=(MagickRealType) draw_info->border_color.green;
5474 target.blue=(MagickRealType) draw_info->border_color.blue;
5475 }
5476 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5477 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5478 MagickTrue);
5479 break;
5480 }
5481 case ResetMethod:
5482 {
5483 PixelPacket
5484 pixel;
5485
5486 for (y=0; y < (ssize_t) image->rows; y++)
5487 {
5488 PixelPacket
5489 *magick_restrict q;
5490
5491 ssize_t
5492 x;
5493
5494 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5495 exception);
5496 if (q == (PixelPacket *) NULL)
5497 break;
5498 for (x=0; x < (ssize_t) image->columns; x++)
5499 {
5500 (void) GetFillColor(draw_info,x,y,&pixel);
5501 SetPixelOpacity(q,pixel.opacity);
5502 q++;
5503 }
5504 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5505 if (status == MagickFalse)
5506 break;
5507 }
5508 break;
5509 }
5510 }
5511 break;
5512 }
5513 case ImagePrimitive:
5514 {
5515 AffineMatrix
5516 affine;
5517
5518 char
5519 composite_geometry[MaxTextExtent];
5520
5521 Image
5522 *composite_image,
5523 *composite_images;
5524
5525 ImageInfo
5526 *clone_info;
5527
5528 RectangleInfo
5529 geometry;
5530
5531 ssize_t
5532 x1,
5533 y1;
5534
5535 if (primitive_info->text == (char *) NULL)
5536 break;
5537 clone_info=AcquireImageInfo();
5538 composite_images=(Image *) NULL;
5539 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5540 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5541 &image->exception);
5542 else
5543 if (*primitive_info->text != '\0')
5544 {
5545 const char
5546 *option;
5547
5548 MagickStatusType
5549 path_status;
5550
5551 struct stat
5552 attributes;
5553
5554 /*
5555 Read composite image.
5556 */
5557 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5558 MagickPathExtent);
5559 (void) SetImageInfo(clone_info,1,exception);
5560 option=GetImageOption(clone_info,"svg:embedding");
5561 if ((option == (char *) NULL) &&
5562 (IsStringTrue(option) == MagickFalse))
5563 {
5564 const MagickInfo
5565 *magick_info;
5566
5567 magick_info=GetMagickInfo(clone_info->magick,exception);
5568 if ((magick_info != (const MagickInfo*) NULL) &&
5569 (LocaleCompare(magick_info->magick_module,"SVG") == 0))
5570 {
5571 (void) ThrowMagickException(exception,GetMagickModule(),
5572 CorruptImageError,"ImageTypeNotSupported","`%s'",
5573 clone_info->filename);
5574 clone_info=DestroyImageInfo(clone_info);
5575 break;
5576 }
5577 }
5578 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5579 MagickPathExtent);
5580 if (clone_info->size != (char *) NULL)
5581 clone_info->size=DestroyString(clone_info->size);
5582 if (clone_info->extract != (char *) NULL)
5583 clone_info->extract=DestroyString(clone_info->extract);
5584 path_status=GetPathAttributes(clone_info->filename,&attributes);
5585 if (path_status != MagickFalse)
5586 {
5587 if (S_ISCHR(attributes.st_mode) == 0)
5588 composite_images=ReadImage(clone_info,exception);
5589 else
5590 (void) ThrowMagickException(exception,GetMagickModule(),
5591 FileOpenError,"UnableToOpenFile","`%s'",
5592 clone_info->filename);
5593 }
5594 else
5595 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5596 (LocaleCompare(clone_info->magick,"http") != 0) &&
5597 (LocaleCompare(clone_info->magick,"https") != 0) &&
5598 (LocaleCompare(clone_info->magick,"vid") != 0))
5599 composite_images=ReadImage(clone_info,exception);
5600 else
5601 (void) ThrowMagickException(exception,GetMagickModule(),
5602 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5603 }
5604 clone_info=DestroyImageInfo(clone_info);
5605 if (composite_images == (Image *) NULL)
5606 {
5607 status=0;
5608 break;
5609 }
5610 composite_image=RemoveFirstImageFromList(&composite_images);
5611 composite_images=DestroyImageList(composite_images);
5612 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5613 NULL,(void *) NULL);
5614 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5615 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5616 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5617 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5618 {
5619 char
5620 geometry[MaxTextExtent];
5621
5622 /*
5623 Resize image.
5624 */
5625 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5626 primitive_info[1].point.x,primitive_info[1].point.y);
5627 composite_image->filter=image->filter;
5628 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5629 }
5630 if (composite_image->matte == MagickFalse)
5631 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5632 if (draw_info->opacity != OpaqueOpacity)
5633 status&=SetImageOpacity(composite_image,draw_info->opacity);
5634 SetGeometry(image,&geometry);
5635 image->gravity=draw_info->gravity;
5636 geometry.x=x;
5637 geometry.y=y;
5638 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5639 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5640 composite_image->rows,(double) geometry.x,(double) geometry.y);
5641 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5642 &image->exception);
5643 affine=draw_info->affine;
5644 affine.tx=(double) geometry.x;
5645 affine.ty=(double) geometry.y;
5646 composite_image->interpolate=image->interpolate;
5647 if ((draw_info->compose == OverCompositeOp) ||
5648 (draw_info->compose == SrcOverCompositeOp))
5649 status&=DrawAffineImage(image,composite_image,&affine);
5650 else
5651 status&=CompositeImage(image,draw_info->compose,composite_image,
5652 geometry.x,geometry.y);
5653 composite_image=DestroyImage(composite_image);
5654 break;
5655 }
5656 case PointPrimitive:
5657 {
5658 PixelPacket
5659 fill_color;
5660
5661 PixelPacket
5662 *q;
5663
5664 if ((y < 0) || (y >= (ssize_t) image->rows))
5665 break;
5666 if ((x < 0) || (x >= (ssize_t) image->columns))
5667 break;
5668 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5669 if (q == (PixelPacket *) NULL)
5670 break;
5671 (void) GetFillColor(draw_info,x,y,&fill_color);
5672 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5673 (MagickRealType) q->opacity,q);
5674 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5675 break;
5676 }
5677 case TextPrimitive:
5678 {
5679 char
5680 geometry[MaxTextExtent];
5681
5682 DrawInfo
5683 *clone_info;
5684
5685 if (primitive_info->text == (char *) NULL)
5686 break;
5687 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5688 (void) CloneString(&clone_info->text,primitive_info->text);
5689 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5690 primitive_info->point.x,primitive_info->point.y);
5691 (void) CloneString(&clone_info->geometry,geometry);
5692 status&=AnnotateImage(image,clone_info);
5693 clone_info=DestroyDrawInfo(clone_info);
5694 break;
5695 }
5696 default:
5697 {
5698 double
5699 mid,
5700 scale;
5701
5702 DrawInfo
5703 *clone_info;
5704
5705 if (IsEventLogging() != MagickFalse)
5706 LogPrimitiveInfo(primitive_info);
5707 scale=ExpandAffine(&draw_info->affine);
5708 if ((draw_info->dash_pattern != (double *) NULL) &&
5709 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5710 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5711 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5712 {
5713 /*
5714 Draw dash polygon.
5715 */
5716 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5717 clone_info->stroke_width=0.0;
5718 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5719 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5720 clone_info=DestroyDrawInfo(clone_info);
5721 if (status != MagickFalse)
5722 status&=DrawDashPolygon(draw_info,primitive_info,image);
5723 break;
5724 }
5725 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5726 if ((mid > 1.0) &&
5727 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5728 (draw_info->stroke_pattern != (Image *) NULL)))
5729 {
5730 double
5731 x,
5732 y;
5733
5734 MagickBooleanType
5735 closed_path;
5736
5737 /*
5738 Draw strokes while respecting line cap/join attributes.
5739 */
5740 closed_path=primitive_info[0].closed_subpath;
5741 i=(ssize_t) primitive_info[0].coordinates;
5742 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5743 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5744 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5745 closed_path=MagickTrue;
5746 if ((((draw_info->linecap == RoundCap) ||
5747 (closed_path != MagickFalse)) &&
5748 (draw_info->linejoin == RoundJoin)) ||
5749 (primitive_info[i].primitive != UndefinedPrimitive))
5750 {
5751 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5752 break;
5753 }
5754 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5755 clone_info->stroke_width=0.0;
5756 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5757 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5758 clone_info=DestroyDrawInfo(clone_info);
5759 if (status != MagickFalse)
5760 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5761 break;
5762 }
5763 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5764 break;
5765 }
5766 }
5767 image_view=DestroyCacheView(image_view);
5768 if (draw_info->compliance == SVGCompliance)
5769 {
5770 status&=SetImageClipMask(image,(Image *) NULL);
5771 status&=SetImageMask(image,(Image *) NULL);
5772 }
5773 if (draw_info->debug != MagickFalse)
5774 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5775 return(status != 0 ? MagickTrue : MagickFalse);
5776}
5777␌
5778/*
5779%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5780% %
5781% %
5782% %
5783+ D r a w S t r o k e P o l y g o n %
5784% %
5785% %
5786% %
5787%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5788%
5789% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5790% the image while respecting the line cap and join attributes.
5791%
5792% The format of the DrawStrokePolygon method is:
5793%
5794% MagickBooleanType DrawStrokePolygon(Image *image,
5795% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5796%
5797% A description of each parameter follows:
5798%
5799% o image: the image.
5800%
5801% o draw_info: the draw info.
5802%
5803% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5804%
5805%
5806*/
5807
5808static MagickBooleanType DrawRoundLinecap(Image *image,
5809 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5810{
5811 PrimitiveInfo
5812 linecap[5];
5813
5814 ssize_t
5815 i;
5816
5817 for (i=0; i < 4; i++)
5818 linecap[i]=(*primitive_info);
5819 linecap[0].coordinates=4;
5820 linecap[1].point.x+=2.0*MagickEpsilon;
5821 linecap[2].point.x+=2.0*MagickEpsilon;
5822 linecap[2].point.y+=2.0*MagickEpsilon;
5823 linecap[3].point.y+=2.0*MagickEpsilon;
5824 linecap[4].primitive=UndefinedPrimitive;
5825 return(DrawPolygonPrimitive(image,draw_info,linecap));
5826}
5827
5828static MagickBooleanType DrawStrokePolygon(Image *image,
5829 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5830{
5831 DrawInfo
5832 *clone_info;
5833
5834 MagickBooleanType
5835 closed_path;
5836
5837 MagickStatusType
5838 status;
5839
5840 PrimitiveInfo
5841 *stroke_polygon;
5842
5843 const PrimitiveInfo
5844 *p,
5845 *q;
5846
5847 /*
5848 Draw stroked polygon.
5849 */
5850 if (draw_info->debug != MagickFalse)
5851 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5852 " begin draw-stroke-polygon");
5853 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5854 clone_info->fill=draw_info->stroke;
5855 if (clone_info->fill_pattern != (Image *) NULL)
5856 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5857 if (clone_info->stroke_pattern != (Image *) NULL)
5858 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5859 MagickTrue,&clone_info->stroke_pattern->exception);
5860 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5861 clone_info->stroke_width=0.0;
5862 clone_info->fill_rule=NonZeroRule;
5863 status=MagickTrue;
5864 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5865 {
5866 if (p->coordinates == 1)
5867 continue;
5868 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5869 if (stroke_polygon == (PrimitiveInfo *) NULL)
5870 {
5871 status=0;
5872 break;
5873 }
5874 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5875 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5876 if (status == 0)
5877 break;
5878 q=p+p->coordinates-1;
5879 closed_path=p->closed_subpath;
5880 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5881 {
5882 status&=DrawRoundLinecap(image,draw_info,p);
5883 status&=DrawRoundLinecap(image,draw_info,q);
5884 }
5885 }
5886 clone_info=DestroyDrawInfo(clone_info);
5887 if (draw_info->debug != MagickFalse)
5888 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5889 " end draw-stroke-polygon");
5890 return(status != 0 ? MagickTrue : MagickFalse);
5891}
5892␌
5893/*
5894%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5895% %
5896% %
5897% %
5898% G e t A f f i n e M a t r i x %
5899% %
5900% %
5901% %
5902%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5903%
5904% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5905% matrix.
5906%
5907% The format of the GetAffineMatrix method is:
5908%
5909% void GetAffineMatrix(AffineMatrix *affine_matrix)
5910%
5911% A description of each parameter follows:
5912%
5913% o affine_matrix: the affine matrix.
5914%
5915*/
5916MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5917{
5918 assert(affine_matrix != (AffineMatrix *) NULL);
5919 if (IsEventLogging() != MagickFalse)
5920 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5921 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5922 affine_matrix->sx=1.0;
5923 affine_matrix->sy=1.0;
5924}
5925␌
5926/*
5927%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5928% %
5929% %
5930% %
5931+ G e t D r a w I n f o %
5932% %
5933% %
5934% %
5935%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5936%
5937% GetDrawInfo() initializes draw_info to default values from image_info.
5938%
5939% The format of the GetDrawInfo method is:
5940%
5941% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5942%
5943% A description of each parameter follows:
5944%
5945% o image_info: the image info..
5946%
5947% o draw_info: the draw info.
5948%
5949*/
5950MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5951{
5952 char
5953 *next_token;
5954
5955 const char
5956 *option;
5957
5958 ExceptionInfo
5959 *exception;
5960
5961 /*
5962 Initialize draw attributes.
5963 */
5964 assert(draw_info != (DrawInfo *) NULL);
5965 if (IsEventLogging() != MagickFalse)
5966 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5967 (void) memset(draw_info,0,sizeof(*draw_info));
5968 draw_info->image_info=CloneImageInfo(image_info);
5969 GetAffineMatrix(&draw_info->affine);
5970 exception=AcquireExceptionInfo();
5971 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5972 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5973 draw_info->stroke_antialias=draw_info->image_info->antialias;
5974 draw_info->stroke_width=1.0;
5975 draw_info->fill_rule=EvenOddRule;
5976 draw_info->opacity=OpaqueOpacity;
5977 draw_info->fill_opacity=OpaqueOpacity;
5978 draw_info->stroke_opacity=OpaqueOpacity;
5979 draw_info->linecap=ButtCap;
5980 draw_info->linejoin=MiterJoin;
5981 draw_info->miterlimit=10;
5982 draw_info->decorate=NoDecoration;
5983 if (draw_info->image_info->font != (char *) NULL)
5984 draw_info->font=AcquireString(draw_info->image_info->font);
5985 if (draw_info->image_info->density != (char *) NULL)
5986 draw_info->density=AcquireString(draw_info->image_info->density);
5987 draw_info->text_antialias=draw_info->image_info->antialias;
5988 draw_info->pointsize=12.0;
5989 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5990 draw_info->pointsize=draw_info->image_info->pointsize;
5991 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5992 draw_info->border_color=draw_info->image_info->border_color;
5993 draw_info->compose=OverCompositeOp;
5994 if (draw_info->image_info->server_name != (char *) NULL)
5995 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5996 draw_info->render=MagickTrue;
5997 draw_info->clip_path=MagickFalse;
5998 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5999 MagickTrue : MagickFalse;
6000 option=GetImageOption(draw_info->image_info,"direction");
6001 if (option != (const char *) NULL)
6002 draw_info->direction=(DirectionType) ParseCommandOption(
6003 MagickDirectionOptions,MagickFalse,option);
6004 else
6005 draw_info->direction=UndefinedDirection;
6006 option=GetImageOption(draw_info->image_info,"encoding");
6007 if (option != (const char *) NULL)
6008 (void) CloneString(&draw_info->encoding,option);
6009 option=GetImageOption(draw_info->image_info,"family");
6010 if (option != (const char *) NULL)
6011 (void) CloneString(&draw_info->family,option);
6012 option=GetImageOption(draw_info->image_info,"fill");
6013 if (option != (const char *) NULL)
6014 (void) QueryColorDatabase(option,&draw_info->fill,exception);
6015 option=GetImageOption(draw_info->image_info,"gravity");
6016 if (option != (const char *) NULL)
6017 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6018 MagickFalse,option);
6019 option=GetImageOption(draw_info->image_info,"interline-spacing");
6020 if (option != (const char *) NULL)
6021 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6022 option=GetImageOption(draw_info->image_info,"interword-spacing");
6023 if (option != (const char *) NULL)
6024 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6025 option=GetImageOption(draw_info->image_info,"kerning");
6026 if (option != (const char *) NULL)
6027 draw_info->kerning=GetDrawValue(option,&next_token);
6028 option=GetImageOption(draw_info->image_info,"stroke");
6029 if (option != (const char *) NULL)
6030 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6031 option=GetImageOption(draw_info->image_info,"strokewidth");
6032 if (option != (const char *) NULL)
6033 draw_info->stroke_width=GetDrawValue(option,&next_token);
6034 option=GetImageOption(draw_info->image_info,"style");
6035 if (option != (const char *) NULL)
6036 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6037 MagickFalse,option);
6038 option=GetImageOption(draw_info->image_info,"undercolor");
6039 if (option != (const char *) NULL)
6040 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6041 option=GetImageOption(draw_info->image_info,"weight");
6042 if (option != (const char *) NULL)
6043 {
6044 ssize_t
6045 weight;
6046
6047 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6048 if (weight == -1)
6049 weight=(ssize_t) StringToUnsignedLong(option);
6050 draw_info->weight=(size_t) weight;
6051 }
6052 exception=DestroyExceptionInfo(exception);
6053 draw_info->signature=MagickCoreSignature;
6054}
6055␌
6056/*
6057%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6058% %
6059% %
6060% %
6061+ P e r m u t a t e %
6062% %
6063% %
6064% %
6065%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6066%
6067% Permutate() returns the permutation of the (n,k).
6068%
6069% The format of the Permutate method is:
6070%
6071% void Permutate(ssize_t n,ssize_t k)
6072%
6073% A description of each parameter follows:
6074%
6075% o n:
6076%
6077% o k:
6078%
6079%
6080*/
6081static inline double Permutate(const ssize_t n,const ssize_t k)
6082{
6083 double
6084 r;
6085
6086 ssize_t
6087 i;
6088
6089 r=1.0;
6090 for (i=k+1; i <= n; i++)
6091 r*=i;
6092 for (i=1; i <= (n-k); i++)
6093 r/=i;
6094 return(r);
6095}
6096␌
6097/*
6098%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6099% %
6100% %
6101% %
6102+ T r a c e P r i m i t i v e %
6103% %
6104% %
6105% %
6106%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6107%
6108% TracePrimitive is a collection of methods for generating graphic
6109% primitives such as arcs, ellipses, paths, etc.
6110%
6111*/
6112
6113static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6114 const PointInfo end,const PointInfo degrees)
6115{
6116 PointInfo
6117 center,
6118 radius;
6119
6120 center.x=0.5*(end.x+start.x);
6121 center.y=0.5*(end.y+start.y);
6122 radius.x=fabs(center.x-start.x);
6123 radius.y=fabs(center.y-start.y);
6124 return(TraceEllipse(mvg_info,center,radius,degrees));
6125}
6126
6127static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6128 const PointInfo end,const PointInfo arc,const double angle,
6129 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6130{
6131 double
6132 alpha,
6133 beta,
6134 delta,
6135 factor,
6136 gamma,
6137 theta;
6138
6139 MagickStatusType
6140 status;
6141
6142 PointInfo
6143 center,
6144 points[3],
6145 radii;
6146
6147 double
6148 cosine,
6149 sine;
6150
6151 PrimitiveInfo
6152 *primitive_info;
6153
6154 PrimitiveInfo
6155 *p;
6156
6157 ssize_t
6158 i;
6159
6160 size_t
6161 arc_segments;
6162
6163 ssize_t
6164 offset;
6165
6166 offset=mvg_info->offset;
6167 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6168 primitive_info->coordinates=0;
6169 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6170 (fabs(start.y-end.y) < MagickEpsilon))
6171 return(TracePoint(primitive_info,end));
6172 radii.x=fabs(arc.x);
6173 radii.y=fabs(arc.y);
6174 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6175 return(TraceLine(primitive_info,start,end));
6176 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6177 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6178 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6179 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6180 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6181 (radii.y*radii.y);
6182 if (delta < MagickEpsilon)
6183 return(TraceLine(primitive_info,start,end));
6184 if (delta > 1.0)
6185 {
6186 radii.x*=sqrt((double) delta);
6187 radii.y*=sqrt((double) delta);
6188 }
6189 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6190 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6191 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6192 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6193 alpha=points[1].x-points[0].x;
6194 beta=points[1].y-points[0].y;
6195 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6196 return(TraceLine(primitive_info,start,end));
6197 factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
6198 if (factor <= 0.0)
6199 factor=0.0;
6200 else
6201 {
6202 factor=sqrt((double) factor);
6203 if (sweep == large_arc)
6204 factor=(-factor);
6205 }
6206 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6207 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6208 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6209 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6210 if ((theta < 0.0) && (sweep != MagickFalse))
6211 theta+=2.0*MagickPI;
6212 else
6213 if ((theta > 0.0) && (sweep == MagickFalse))
6214 theta-=2.0*MagickPI;
6215 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6216 MagickPI+MagickEpsilon)))));
6217 p=primitive_info;
6218 status=MagickTrue;
6219 for (i=0; i < (ssize_t) arc_segments; i++)
6220 {
6221 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6222 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6223 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6224 sin(fmod((double) beta,DegreesToRadians(360.0)));
6225 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6226 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6227 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6228 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6229 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6230 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6231 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6232 theta/arc_segments),DegreesToRadians(360.0))));
6233 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6234 theta/arc_segments),DegreesToRadians(360.0))));
6235 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6236 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6237 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6238 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6239 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6240 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6241 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6242 points[0].y);
6243 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6244 points[0].y);
6245 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6246 points[1].y);
6247 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6248 points[1].y);
6249 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6250 points[2].y);
6251 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6252 points[2].y);
6253 if (i == (ssize_t) (arc_segments-1))
6254 (p+3)->point=end;
6255 status&=TraceBezier(mvg_info,4);
6256 if (status == 0)
6257 break;
6258 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6259 mvg_info->offset+=p->coordinates;
6260 p+=(ptrdiff_t) p->coordinates;
6261 }
6262 if (status == 0)
6263 return(MagickFalse);
6264 mvg_info->offset=offset;
6265 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6266 primitive_info->coordinates=(size_t) (p-primitive_info);
6267 primitive_info->closed_subpath=MagickFalse;
6268 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6269 {
6270 p->primitive=primitive_info->primitive;
6271 p--;
6272 }
6273 return(MagickTrue);
6274}
6275
6276static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6277 const size_t number_coordinates)
6278{
6279 double
6280 alpha,
6281 *coefficients,
6282 weight;
6283
6284 PointInfo
6285 end,
6286 point,
6287 *points;
6288
6289 PrimitiveInfo
6290 *primitive_info;
6291
6292 PrimitiveInfo
6293 *p;
6294
6295 ssize_t
6296 i,
6297 j;
6298
6299 size_t
6300 control_points,
6301 quantum;
6302
6303 /*
6304 Allocate coefficients.
6305 */
6306 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6307 quantum=number_coordinates;
6308 for (i=0; i < (ssize_t) number_coordinates; i++)
6309 {
6310 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6311 {
6312 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6313 if (alpha > (double) MAGICK_SSIZE_MAX)
6314 {
6315 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6316 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6317 return(MagickFalse);
6318 }
6319 if (alpha > (double) quantum)
6320 quantum=(size_t) alpha;
6321 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6322 if (alpha > (double) MAGICK_SSIZE_MAX)
6323 {
6324 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6325 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6326 return(MagickFalse);
6327 }
6328 if (alpha > (double) quantum)
6329 quantum=(size_t) alpha;
6330 }
6331 }
6332 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6333 sizeof(*coefficients));
6334 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6335 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6336 sizeof(*points));
6337 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6338 {
6339 if (points != (PointInfo *) NULL)
6340 points=(PointInfo *) RelinquishMagickMemory(points);
6341 if (coefficients != (double *) NULL)
6342 coefficients=(double *) RelinquishMagickMemory(coefficients);
6343 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6344 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6345 return(MagickFalse);
6346 }
6347 control_points=quantum*number_coordinates;
6348 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6349 {
6350 points=(PointInfo *) RelinquishMagickMemory(points);
6351 coefficients=(double *) RelinquishMagickMemory(coefficients);
6352 return(MagickFalse);
6353 }
6354 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6355 /*
6356 Compute bezier points.
6357 */
6358 end=primitive_info[number_coordinates-1].point;
6359 for (i=0; i < (ssize_t) number_coordinates; i++)
6360 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6361 weight=0.0;
6362 for (i=0; i < (ssize_t) control_points; i++)
6363 {
6364 p=primitive_info;
6365 point.x=0.0;
6366 point.y=0.0;
6367 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6368 for (j=0; j < (ssize_t) number_coordinates; j++)
6369 {
6370 point.x+=alpha*coefficients[j]*p->point.x;
6371 point.y+=alpha*coefficients[j]*p->point.y;
6372 alpha*=weight/(1.0-weight);
6373 p++;
6374 }
6375 points[i]=point;
6376 weight+=1.0/control_points;
6377 }
6378 /*
6379 Bezier curves are just short segmented polys.
6380 */
6381 p=primitive_info;
6382 for (i=0; i < (ssize_t) control_points; i++)
6383 {
6384 if (TracePoint(p,points[i]) == MagickFalse)
6385 {
6386 points=(PointInfo *) RelinquishMagickMemory(points);
6387 coefficients=(double *) RelinquishMagickMemory(coefficients);
6388 return(MagickFalse);
6389 }
6390 p+=(ptrdiff_t) p->coordinates;
6391 }
6392 if (TracePoint(p,end) == MagickFalse)
6393 {
6394 points=(PointInfo *) RelinquishMagickMemory(points);
6395 coefficients=(double *) RelinquishMagickMemory(coefficients);
6396 return(MagickFalse);
6397 }
6398 p+=(ptrdiff_t) p->coordinates;
6399 primitive_info->coordinates=(size_t) (p-primitive_info);
6400 primitive_info->closed_subpath=MagickFalse;
6401 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6402 {
6403 p->primitive=primitive_info->primitive;
6404 p--;
6405 }
6406 points=(PointInfo *) RelinquishMagickMemory(points);
6407 coefficients=(double *) RelinquishMagickMemory(coefficients);
6408 return(MagickTrue);
6409}
6410
6411static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6412 const PointInfo end)
6413{
6414 double
6415 alpha,
6416 beta,
6417 radius;
6418
6419 PointInfo
6420 offset,
6421 degrees;
6422
6423 alpha=end.x-start.x;
6424 beta=end.y-start.y;
6425 radius=hypot((double) alpha,(double) beta);
6426 offset.x=(double) radius;
6427 offset.y=(double) radius;
6428 degrees.x=0.0;
6429 degrees.y=360.0;
6430 return(TraceEllipse(mvg_info,start,offset,degrees));
6431}
6432
6433static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6434 const PointInfo radii,const PointInfo arc)
6435{
6436 double
6437 coordinates,
6438 delta,
6439 step,
6440 x,
6441 y;
6442
6443 PointInfo
6444 angle,
6445 point;
6446
6447 PrimitiveInfo
6448 *primitive_info;
6449
6450 PrimitiveInfo
6451 *p;
6452
6453 ssize_t
6454 i;
6455
6456 /*
6457 Ellipses are just short segmented polys.
6458 */
6459 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6460 primitive_info->coordinates=0;
6461 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6462 return(MagickTrue);
6463 delta=PerceptibleReciprocal(MagickMax(radii.x,radii.y));
6464 step=MagickPI/(MagickPI*PerceptibleReciprocal(delta))/8.0;
6465 angle.x=DegreesToRadians(arc.x);
6466 y=arc.y;
6467 while (y < arc.x)
6468 y+=360.0;
6469 angle.y=DegreesToRadians(y);
6470 coordinates=ceil((angle.y-angle.x)/step+1.0);
6471 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6472 return(MagickFalse);
6473 i=0;
6474 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6475 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6476 {
6477 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6478 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6479 if (i++ >= (ssize_t) coordinates)
6480 break;
6481 if (TracePoint(p,point) == MagickFalse)
6482 return(MagickFalse);
6483 p+=(ptrdiff_t) p->coordinates;
6484 }
6485 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6486 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6487 if (TracePoint(p,point) == MagickFalse)
6488 return(MagickFalse);
6489 p+=(ptrdiff_t) p->coordinates;
6490 primitive_info->coordinates=(size_t) (p-primitive_info);
6491 primitive_info->closed_subpath=MagickFalse;
6492 x=fabs(primitive_info[0].point.x-
6493 primitive_info[primitive_info->coordinates-1].point.x);
6494 y=fabs(primitive_info[0].point.y-
6495 primitive_info[primitive_info->coordinates-1].point.y);
6496 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6497 primitive_info->closed_subpath=MagickTrue;
6498 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6499 {
6500 p->primitive=primitive_info->primitive;
6501 p--;
6502 }
6503 return(MagickTrue);
6504}
6505
6506static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6507 const PointInfo start,const PointInfo end)
6508{
6509 if (TracePoint(primitive_info,start) == MagickFalse)
6510 return(MagickFalse);
6511 if (TracePoint(primitive_info+1,end) == MagickFalse)
6512 return(MagickFalse);
6513 (primitive_info+1)->primitive=primitive_info->primitive;
6514 primitive_info->coordinates=2;
6515 primitive_info->closed_subpath=MagickFalse;
6516 return(MagickTrue);
6517}
6518
6519static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6520{
6521 char
6522 *next_token,
6523 token[MaxTextExtent] = "";
6524
6525 const char
6526 *p;
6527
6528 double
6529 x,
6530 y;
6531
6532 int
6533 attribute,
6534 last_attribute;
6535
6536 MagickStatusType
6537 status;
6538
6539 PointInfo
6540 end = {0.0, 0.0},
6541 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6542 point = {0.0, 0.0},
6543 start = {0.0, 0.0};
6544
6545 PrimitiveInfo
6546 *primitive_info;
6547
6548 PrimitiveType
6549 primitive_type;
6550
6551 PrimitiveInfo
6552 *q;
6553
6554 ssize_t
6555 i;
6556
6557 size_t
6558 number_coordinates,
6559 z_count;
6560
6561 ssize_t
6562 subpath_offset;
6563
6564 subpath_offset=mvg_info->offset;
6565 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6566 status=MagickTrue;
6567 attribute=0;
6568 number_coordinates=0;
6569 z_count=0;
6570 *token='\0';
6571 primitive_type=primitive_info->primitive;
6572 q=primitive_info;
6573 for (p=path; *p != '\0'; )
6574 {
6575 if (status == MagickFalse)
6576 break;
6577 while (isspace((int) ((unsigned char) *p)) != 0)
6578 p++;
6579 if (*p == '\0')
6580 break;
6581 last_attribute=attribute;
6582 attribute=(int) (*p++);
6583 switch (attribute)
6584 {
6585 case 'a':
6586 case 'A':
6587 {
6588 double
6589 angle = 0.0;
6590
6591 MagickBooleanType
6592 large_arc = MagickFalse,
6593 sweep = MagickFalse;
6594
6595 PointInfo
6596 arc = {0.0, 0.0};
6597
6598 /*
6599 Elliptical arc.
6600 */
6601 do
6602 {
6603 (void) GetNextToken(p,&p,MaxTextExtent,token);
6604 if (*token == ',')
6605 (void) GetNextToken(p,&p,MaxTextExtent,token);
6606 arc.x=GetDrawValue(token,&next_token);
6607 if (token == next_token)
6608 ThrowPointExpectedException(image,token);
6609 (void) GetNextToken(p,&p,MaxTextExtent,token);
6610 if (*token == ',')
6611 (void) GetNextToken(p,&p,MaxTextExtent,token);
6612 arc.y=GetDrawValue(token,&next_token);
6613 if (token == next_token)
6614 ThrowPointExpectedException(image,token);
6615 (void) GetNextToken(p,&p,MaxTextExtent,token);
6616 if (*token == ',')
6617 (void) GetNextToken(p,&p,MaxTextExtent,token);
6618 angle=GetDrawValue(token,&next_token);
6619 if (token == next_token)
6620 ThrowPointExpectedException(image,token);
6621 (void) GetNextToken(p,&p,MaxTextExtent,token);
6622 if (*token == ',')
6623 (void) GetNextToken(p,&p,MaxTextExtent,token);
6624 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6625 (void) GetNextToken(p,&p,MaxTextExtent,token);
6626 if (*token == ',')
6627 (void) GetNextToken(p,&p,MaxTextExtent,token);
6628 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6629 if (*token == ',')
6630 (void) GetNextToken(p,&p,MaxTextExtent,token);
6631 (void) GetNextToken(p,&p,MaxTextExtent,token);
6632 if (*token == ',')
6633 (void) GetNextToken(p,&p,MaxTextExtent,token);
6634 x=GetDrawValue(token,&next_token);
6635 if (token == next_token)
6636 ThrowPointExpectedException(image,token);
6637 (void) GetNextToken(p,&p,MaxTextExtent,token);
6638 if (*token == ',')
6639 (void) GetNextToken(p,&p,MaxTextExtent,token);
6640 y=GetDrawValue(token,&next_token);
6641 if (token == next_token)
6642 ThrowPointExpectedException(image,token);
6643 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6644 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6645 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6646 q=(*mvg_info->primitive_info)+mvg_info->offset;
6647 mvg_info->offset+=q->coordinates;
6648 q+=(ptrdiff_t) q->coordinates;
6649 point=end;
6650 while (isspace((int) ((unsigned char) *p)) != 0)
6651 p++;
6652 if (*p == ',')
6653 p++;
6654 } while (IsPoint(p) != MagickFalse);
6655 break;
6656 }
6657 case 'c':
6658 case 'C':
6659 {
6660 /*
6661 Cubic Bézier curve.
6662 */
6663 do
6664 {
6665 points[0]=point;
6666 for (i=1; i < 4; i++)
6667 {
6668 (void) GetNextToken(p,&p,MaxTextExtent,token);
6669 if (*token == ',')
6670 (void) GetNextToken(p,&p,MaxTextExtent,token);
6671 x=GetDrawValue(token,&next_token);
6672 if (token == next_token)
6673 ThrowPointExpectedException(image,token);
6674 (void) GetNextToken(p,&p,MaxTextExtent,token);
6675 if (*token == ',')
6676 (void) GetNextToken(p,&p,MaxTextExtent,token);
6677 y=GetDrawValue(token,&next_token);
6678 if (token == next_token)
6679 ThrowPointExpectedException(image,token);
6680 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6681 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6682 points[i]=end;
6683 }
6684 for (i=0; i < 4; i++)
6685 (q+i)->point=points[i];
6686 if (TraceBezier(mvg_info,4) == MagickFalse)
6687 return(-1);
6688 q=(*mvg_info->primitive_info)+mvg_info->offset;
6689 mvg_info->offset+=q->coordinates;
6690 q+=(ptrdiff_t) q->coordinates;
6691 point=end;
6692 while (isspace((int) ((unsigned char) *p)) != 0)
6693 p++;
6694 if (*p == ',')
6695 p++;
6696 } while (IsPoint(p) != MagickFalse);
6697 break;
6698 }
6699 case 'H':
6700 case 'h':
6701 {
6702 do
6703 {
6704 (void) GetNextToken(p,&p,MaxTextExtent,token);
6705 if (*token == ',')
6706 (void) GetNextToken(p,&p,MaxTextExtent,token);
6707 x=GetDrawValue(token,&next_token);
6708 if (token == next_token)
6709 ThrowPointExpectedException(image,token);
6710 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6711 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6712 return(-1);
6713 q=(*mvg_info->primitive_info)+mvg_info->offset;
6714 if (TracePoint(q,point) == MagickFalse)
6715 return(-1);
6716 mvg_info->offset+=q->coordinates;
6717 q+=(ptrdiff_t) q->coordinates;
6718 while (isspace((int) ((unsigned char) *p)) != 0)
6719 p++;
6720 if (*p == ',')
6721 p++;
6722 } while (IsPoint(p) != MagickFalse);
6723 break;
6724 }
6725 case 'l':
6726 case 'L':
6727 {
6728 /*
6729 Line to.
6730 */
6731 do
6732 {
6733 (void) GetNextToken(p,&p,MaxTextExtent,token);
6734 if (*token == ',')
6735 (void) GetNextToken(p,&p,MaxTextExtent,token);
6736 x=GetDrawValue(token,&next_token);
6737 if (token == next_token)
6738 ThrowPointExpectedException(image,token);
6739 (void) GetNextToken(p,&p,MaxTextExtent,token);
6740 if (*token == ',')
6741 (void) GetNextToken(p,&p,MaxTextExtent,token);
6742 y=GetDrawValue(token,&next_token);
6743 if (token == next_token)
6744 ThrowPointExpectedException(image,token);
6745 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6746 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6747 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6748 return(-1);
6749 q=(*mvg_info->primitive_info)+mvg_info->offset;
6750 if (TracePoint(q,point) == MagickFalse)
6751 return(-1);
6752 mvg_info->offset+=q->coordinates;
6753 q+=(ptrdiff_t) q->coordinates;
6754 while (isspace((int) ((unsigned char) *p)) != 0)
6755 p++;
6756 if (*p == ',')
6757 p++;
6758 } while (IsPoint(p) != MagickFalse);
6759 break;
6760 }
6761 case 'M':
6762 case 'm':
6763 {
6764 /*
6765 Move to.
6766 */
6767 if (mvg_info->offset != subpath_offset)
6768 {
6769 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6770 primitive_info->coordinates=(size_t) (q-primitive_info);
6771 number_coordinates+=primitive_info->coordinates;
6772 primitive_info=q;
6773 subpath_offset=mvg_info->offset;
6774 }
6775 i=0;
6776 do
6777 {
6778 (void) GetNextToken(p,&p,MaxTextExtent,token);
6779 if (*token == ',')
6780 (void) GetNextToken(p,&p,MaxTextExtent,token);
6781 x=GetDrawValue(token,&next_token);
6782 if (token == next_token)
6783 ThrowPointExpectedException(image,token);
6784 (void) GetNextToken(p,&p,MaxTextExtent,token);
6785 if (*token == ',')
6786 (void) GetNextToken(p,&p,MaxTextExtent,token);
6787 y=GetDrawValue(token,&next_token);
6788 if (token == next_token)
6789 ThrowPointExpectedException(image,token);
6790 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6791 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6792 if (i == 0)
6793 start=point;
6794 i++;
6795 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6796 return(-1);
6797 q=(*mvg_info->primitive_info)+mvg_info->offset;
6798 if (TracePoint(q,point) == MagickFalse)
6799 return(-1);
6800 mvg_info->offset+=q->coordinates;
6801 q+=(ptrdiff_t) q->coordinates;
6802 while (isspace((int) ((unsigned char) *p)) != 0)
6803 p++;
6804 if (*p == ',')
6805 p++;
6806 } while (IsPoint(p) != MagickFalse);
6807 break;
6808 }
6809 case 'q':
6810 case 'Q':
6811 {
6812 /*
6813 Quadratic Bézier curve.
6814 */
6815 do
6816 {
6817 points[0]=point;
6818 for (i=1; i < 3; i++)
6819 {
6820 (void) GetNextToken(p,&p,MaxTextExtent,token);
6821 if (*token == ',')
6822 (void) GetNextToken(p,&p,MaxTextExtent,token);
6823 x=GetDrawValue(token,&next_token);
6824 if (token == next_token)
6825 ThrowPointExpectedException(image,token);
6826 (void) GetNextToken(p,&p,MaxTextExtent,token);
6827 if (*token == ',')
6828 (void) GetNextToken(p,&p,MaxTextExtent,token);
6829 y=GetDrawValue(token,&next_token);
6830 if (token == next_token)
6831 ThrowPointExpectedException(image,token);
6832 if (*p == ',')
6833 p++;
6834 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6835 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6836 points[i]=end;
6837 }
6838 for (i=0; i < 3; i++)
6839 (q+i)->point=points[i];
6840 if (TraceBezier(mvg_info,3) == MagickFalse)
6841 return(-1);
6842 q=(*mvg_info->primitive_info)+mvg_info->offset;
6843 mvg_info->offset+=q->coordinates;
6844 q+=(ptrdiff_t) q->coordinates;
6845 point=end;
6846 while (isspace((int) ((unsigned char) *p)) != 0)
6847 p++;
6848 if (*p == ',')
6849 p++;
6850 } while (IsPoint(p) != MagickFalse);
6851 break;
6852 }
6853 case 's':
6854 case 'S':
6855 {
6856 /*
6857 Cubic Bézier curve.
6858 */
6859 do
6860 {
6861 points[0]=points[3];
6862 points[1].x=2.0*points[3].x-points[2].x;
6863 points[1].y=2.0*points[3].y-points[2].y;
6864 for (i=2; i < 4; i++)
6865 {
6866 (void) GetNextToken(p,&p,MaxTextExtent,token);
6867 if (*token == ',')
6868 (void) GetNextToken(p,&p,MaxTextExtent,token);
6869 x=GetDrawValue(token,&next_token);
6870 if (token == next_token)
6871 ThrowPointExpectedException(image,token);
6872 (void) GetNextToken(p,&p,MaxTextExtent,token);
6873 if (*token == ',')
6874 (void) GetNextToken(p,&p,MaxTextExtent,token);
6875 y=GetDrawValue(token,&next_token);
6876 if (token == next_token)
6877 ThrowPointExpectedException(image,token);
6878 if (*p == ',')
6879 p++;
6880 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6881 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6882 points[i]=end;
6883 }
6884 if (strchr("CcSs",last_attribute) == (char *) NULL)
6885 {
6886 points[0]=point;
6887 points[1]=point;
6888 }
6889 for (i=0; i < 4; i++)
6890 (q+i)->point=points[i];
6891 if (TraceBezier(mvg_info,4) == MagickFalse)
6892 return(-1);
6893 q=(*mvg_info->primitive_info)+mvg_info->offset;
6894 mvg_info->offset+=q->coordinates;
6895 q+=(ptrdiff_t) q->coordinates;
6896 point=end;
6897 last_attribute=attribute;
6898 while (isspace((int) ((unsigned char) *p)) != 0)
6899 p++;
6900 if (*p == ',')
6901 p++;
6902 } while (IsPoint(p) != MagickFalse);
6903 break;
6904 }
6905 case 't':
6906 case 'T':
6907 {
6908 /*
6909 Quadratic Bézier curve.
6910 */
6911 do
6912 {
6913 points[0]=points[2];
6914 points[1].x=2.0*points[2].x-points[1].x;
6915 points[1].y=2.0*points[2].y-points[1].y;
6916 for (i=2; i < 3; i++)
6917 {
6918 (void) GetNextToken(p,&p,MaxTextExtent,token);
6919 if (*token == ',')
6920 (void) GetNextToken(p,&p,MaxTextExtent,token);
6921 x=GetDrawValue(token,&next_token);
6922 if (token == next_token)
6923 ThrowPointExpectedException(image,token);
6924 (void) GetNextToken(p,&p,MaxTextExtent,token);
6925 if (*token == ',')
6926 (void) GetNextToken(p,&p,MaxTextExtent,token);
6927 y=GetDrawValue(token,&next_token);
6928 if (token == next_token)
6929 ThrowPointExpectedException(image,token);
6930 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6931 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6932 points[i]=end;
6933 }
6934 if (status == MagickFalse)
6935 break;
6936 if (strchr("QqTt",last_attribute) == (char *) NULL)
6937 {
6938 points[0]=point;
6939 points[1]=point;
6940 }
6941 for (i=0; i < 3; i++)
6942 (q+i)->point=points[i];
6943 if (TraceBezier(mvg_info,3) == MagickFalse)
6944 return(-1);
6945 q=(*mvg_info->primitive_info)+mvg_info->offset;
6946 mvg_info->offset+=q->coordinates;
6947 q+=(ptrdiff_t) q->coordinates;
6948 point=end;
6949 last_attribute=attribute;
6950 while (isspace((int) ((unsigned char) *p)) != 0)
6951 p++;
6952 if (*p == ',')
6953 p++;
6954 } while (IsPoint(p) != MagickFalse);
6955 break;
6956 }
6957 case 'v':
6958 case 'V':
6959 {
6960 /*
6961 Line to.
6962 */
6963 do
6964 {
6965 (void) GetNextToken(p,&p,MaxTextExtent,token);
6966 if (*token == ',')
6967 (void) GetNextToken(p,&p,MaxTextExtent,token);
6968 y=GetDrawValue(token,&next_token);
6969 if (token == next_token)
6970 ThrowPointExpectedException(image,token);
6971 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6972 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6973 return(-1);
6974 q=(*mvg_info->primitive_info)+mvg_info->offset;
6975 if (TracePoint(q,point) == MagickFalse)
6976 return(-1);
6977 mvg_info->offset+=q->coordinates;
6978 q+=(ptrdiff_t) q->coordinates;
6979 while (isspace((int) ((unsigned char) *p)) != 0)
6980 p++;
6981 if (*p == ',')
6982 p++;
6983 } while (IsPoint(p) != MagickFalse);
6984 break;
6985 }
6986 case 'z':
6987 case 'Z':
6988 {
6989 /*
6990 Close path.
6991 */
6992 point=start;
6993 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6994 return(-1);
6995 q=(*mvg_info->primitive_info)+mvg_info->offset;
6996 if (TracePoint(q,point) == MagickFalse)
6997 return(-1);
6998 mvg_info->offset+=q->coordinates;
6999 q+=(ptrdiff_t) q->coordinates;
7000 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7001 primitive_info->coordinates=(size_t) (q-primitive_info);
7002 primitive_info->closed_subpath=MagickTrue;
7003 number_coordinates+=primitive_info->coordinates;
7004 primitive_info=q;
7005 subpath_offset=mvg_info->offset;
7006 z_count++;
7007 break;
7008 }
7009 default:
7010 {
7011 ThrowPointExpectedException(image,token);
7012 break;
7013 }
7014 }
7015 }
7016 if (status == MagickFalse)
7017 return(-1);
7018 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7019 primitive_info->coordinates=(size_t) (q-primitive_info);
7020 number_coordinates+=primitive_info->coordinates;
7021 for (i=0; i < (ssize_t) number_coordinates; i++)
7022 {
7023 q--;
7024 q->primitive=primitive_type;
7025 if (z_count > 1)
7026 q->method=FillToBorderMethod;
7027 }
7028 q=primitive_info;
7029 return((ssize_t) number_coordinates);
7030}
7031
7032static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7033 const PointInfo start,const PointInfo end)
7034{
7035 PointInfo
7036 point;
7037
7038 PrimitiveInfo
7039 *p;
7040
7041 ssize_t
7042 i;
7043
7044 p=primitive_info;
7045 if (TracePoint(p,start) == MagickFalse)
7046 return(MagickFalse);
7047 p+=(ptrdiff_t) p->coordinates;
7048 point.x=start.x;
7049 point.y=end.y;
7050 if (TracePoint(p,point) == MagickFalse)
7051 return(MagickFalse);
7052 p+=(ptrdiff_t) p->coordinates;
7053 if (TracePoint(p,end) == MagickFalse)
7054 return(MagickFalse);
7055 p+=(ptrdiff_t) p->coordinates;
7056 point.x=end.x;
7057 point.y=start.y;
7058 if (TracePoint(p,point) == MagickFalse)
7059 return(MagickFalse);
7060 p+=(ptrdiff_t) p->coordinates;
7061 if (TracePoint(p,start) == MagickFalse)
7062 return(MagickFalse);
7063 p+=(ptrdiff_t) p->coordinates;
7064 primitive_info->coordinates=(size_t) (p-primitive_info);
7065 primitive_info->closed_subpath=MagickTrue;
7066 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7067 {
7068 p->primitive=primitive_info->primitive;
7069 p--;
7070 }
7071 return(MagickTrue);
7072}
7073
7074static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7075 const PointInfo start,const PointInfo end,PointInfo arc)
7076{
7077 PointInfo
7078 degrees,
7079 point,
7080 segment;
7081
7082 PrimitiveInfo
7083 *primitive_info;
7084
7085 PrimitiveInfo
7086 *p;
7087
7088 ssize_t
7089 i;
7090
7091 ssize_t
7092 offset;
7093
7094 offset=mvg_info->offset;
7095 segment.x=fabs(end.x-start.x);
7096 segment.y=fabs(end.y-start.y);
7097 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7098 {
7099 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7100 return(MagickTrue);
7101 }
7102 if (arc.x > (0.5*segment.x))
7103 arc.x=0.5*segment.x;
7104 if (arc.y > (0.5*segment.y))
7105 arc.y=0.5*segment.y;
7106 point.x=start.x+segment.x-arc.x;
7107 point.y=start.y+arc.y;
7108 degrees.x=270.0;
7109 degrees.y=360.0;
7110 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7111 return(MagickFalse);
7112 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7113 mvg_info->offset+=p->coordinates;
7114 point.x=start.x+segment.x-arc.x;
7115 point.y=start.y+segment.y-arc.y;
7116 degrees.x=0.0;
7117 degrees.y=90.0;
7118 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7119 return(MagickFalse);
7120 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7121 mvg_info->offset+=p->coordinates;
7122 point.x=start.x+arc.x;
7123 point.y=start.y+segment.y-arc.y;
7124 degrees.x=90.0;
7125 degrees.y=180.0;
7126 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7127 return(MagickFalse);
7128 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7129 mvg_info->offset+=p->coordinates;
7130 point.x=start.x+arc.x;
7131 point.y=start.y+arc.y;
7132 degrees.x=180.0;
7133 degrees.y=270.0;
7134 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7135 return(MagickFalse);
7136 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7137 mvg_info->offset+=p->coordinates;
7138 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7139 return(MagickFalse);
7140 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7141 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7142 return(MagickFalse);
7143 p+=(ptrdiff_t) p->coordinates;
7144 mvg_info->offset=offset;
7145 primitive_info=(*mvg_info->primitive_info)+offset;
7146 primitive_info->coordinates=(size_t) (p-primitive_info);
7147 primitive_info->closed_subpath=MagickTrue;
7148 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7149 {
7150 p->primitive=primitive_info->primitive;
7151 p--;
7152 }
7153 return(MagickTrue);
7154}
7155
7156static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7157 const size_t number_vertices,const double offset)
7158{
7159 double
7160 distance;
7161
7162 double
7163 dx,
7164 dy;
7165
7166 ssize_t
7167 i;
7168
7169 ssize_t
7170 j;
7171
7172 dx=0.0;
7173 dy=0.0;
7174 for (i=1; i < (ssize_t) number_vertices; i++)
7175 {
7176 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7177 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7178 if ((fabs((double) dx) >= MagickEpsilon) ||
7179 (fabs((double) dy) >= MagickEpsilon))
7180 break;
7181 }
7182 if (i == (ssize_t) number_vertices)
7183 i=(ssize_t) number_vertices-1L;
7184 distance=hypot((double) dx,(double) dy);
7185 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7186 dx*(distance+offset)/distance);
7187 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7188 dy*(distance+offset)/distance);
7189 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7190 {
7191 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7192 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7193 if ((fabs((double) dx) >= MagickEpsilon) ||
7194 (fabs((double) dy) >= MagickEpsilon))
7195 break;
7196 }
7197 distance=hypot((double) dx,(double) dy);
7198 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7199 dx*(distance+offset)/distance);
7200 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7201 dy*(distance+offset)/distance);
7202 return(MagickTrue);
7203}
7204
7205static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7206 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7207{
7208#define MaxStrokePad (6*BezierQuantum+360)
7209#define CheckPathExtent(pad_p,pad_q) \
7210{ \
7211 if ((pad_p) > MaxBezierCoordinates) \
7212 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7213 else \
7214 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7215 { \
7216 if (~extent_p < (pad_p)) \
7217 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7218 else \
7219 { \
7220 extent_p+=(pad_p); \
7221 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7222 MaxStrokePad,sizeof(*stroke_p)); \
7223 } \
7224 } \
7225 if ((pad_q) > MaxBezierCoordinates) \
7226 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7227 else \
7228 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7229 { \
7230 if (~extent_q < (pad_q)) \
7231 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7232 else \
7233 { \
7234 extent_q+=(pad_q); \
7235 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7236 MaxStrokePad,sizeof(*stroke_q)); \
7237 } \
7238 } \
7239 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7240 { \
7241 if (stroke_p != (PointInfo *) NULL) \
7242 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7243 if (stroke_q != (PointInfo *) NULL) \
7244 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7245 polygon_primitive=(PrimitiveInfo *) \
7246 RelinquishMagickMemory(polygon_primitive); \
7247 (void) ThrowMagickException(exception,GetMagickModule(), \
7248 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7249 return((PrimitiveInfo *) NULL); \
7250 } \
7251}
7252
7253 typedef struct _StrokeSegment
7254 {
7255 double
7256 p,
7257 q;
7258 } StrokeSegment;
7259
7260 double
7261 delta_theta,
7262 dot_product,
7263 mid,
7264 miterlimit;
7265
7266 MagickBooleanType
7267 closed_path;
7268
7269 PointInfo
7270 box_p[5],
7271 box_q[5],
7272 center,
7273 offset,
7274 *stroke_p,
7275 *stroke_q;
7276
7277 PrimitiveInfo
7278 *polygon_primitive,
7279 *stroke_polygon;
7280
7281 ssize_t
7282 i;
7283
7284 size_t
7285 arc_segments,
7286 extent_p,
7287 extent_q,
7288 number_vertices;
7289
7290 ssize_t
7291 j,
7292 n,
7293 p,
7294 q;
7295
7296 StrokeSegment
7297 dx = {0.0, 0.0},
7298 dy = {0.0, 0.0},
7299 inverse_slope = {0.0, 0.0},
7300 slope = {0.0, 0.0},
7301 theta = {0.0, 0.0};
7302
7303 /*
7304 Allocate paths.
7305 */
7306 number_vertices=primitive_info->coordinates;
7307 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7308 number_vertices+2UL,sizeof(*polygon_primitive));
7309 if (polygon_primitive == (PrimitiveInfo *) NULL)
7310 {
7311 (void) ThrowMagickException(exception,GetMagickModule(),
7312 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7313 return((PrimitiveInfo *) NULL);
7314 }
7315 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7316 sizeof(*polygon_primitive));
7317 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7318 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7319 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7320 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7321 if (((draw_info->linejoin == RoundJoin) ||
7322 (draw_info->linejoin == MiterJoin)) && (closed_path != MagickFalse))
7323 {
7324 polygon_primitive[number_vertices]=primitive_info[1];
7325 number_vertices++;
7326 }
7327 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7328 /*
7329 Compute the slope for the first line segment, p.
7330 */
7331 dx.p=0.0;
7332 dy.p=0.0;
7333 for (n=1; n < (ssize_t) number_vertices; n++)
7334 {
7335 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7336 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7337 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7338 break;
7339 }
7340 if (n == (ssize_t) number_vertices)
7341 {
7342 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7343 {
7344 /*
7345 Zero length subpath.
7346 */
7347 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7348 sizeof(*stroke_polygon));
7349 stroke_polygon[0]=polygon_primitive[0];
7350 stroke_polygon[0].coordinates=0;
7351 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7352 polygon_primitive);
7353 return(stroke_polygon);
7354 }
7355 n=(ssize_t) number_vertices-1L;
7356 }
7357 extent_p=2*number_vertices;
7358 extent_q=2*number_vertices;
7359 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7360 sizeof(*stroke_p));
7361 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7362 sizeof(*stroke_q));
7363 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7364 {
7365 if (stroke_p != (PointInfo *) NULL)
7366 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7367 if (stroke_q != (PointInfo *) NULL)
7368 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7369 polygon_primitive=(PrimitiveInfo *)
7370 RelinquishMagickMemory(polygon_primitive);
7371 (void) ThrowMagickException(exception,GetMagickModule(),
7372 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7373 return((PrimitiveInfo *) NULL);
7374 }
7375 slope.p=0.0;
7376 inverse_slope.p=0.0;
7377 if (fabs(dx.p) < MagickEpsilon)
7378 {
7379 if (dx.p >= 0.0)
7380 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7381 else
7382 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7383 }
7384 else
7385 if (fabs(dy.p) < MagickEpsilon)
7386 {
7387 if (dy.p >= 0.0)
7388 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7389 else
7390 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7391 }
7392 else
7393 {
7394 slope.p=dy.p/dx.p;
7395 inverse_slope.p=(-1.0*PerceptibleReciprocal(slope.p));
7396 }
7397 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7398 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7399 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7400 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7401 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7402 offset.y=(double) (offset.x*inverse_slope.p);
7403 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7404 {
7405 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7406 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7407 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7408 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7409 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7410 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7411 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7412 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7413 }
7414 else
7415 {
7416 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7417 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7418 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7419 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7420 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7421 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7422 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7423 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7424 }
7425 /*
7426 Create strokes for the line join attribute: bevel, miter, round.
7427 */
7428 p=0;
7429 q=0;
7430 stroke_q[p++]=box_q[0];
7431 stroke_p[q++]=box_p[0];
7432 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7433 {
7434 /*
7435 Compute the slope for this line segment, q.
7436 */
7437 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7438 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7439 dot_product=dx.q*dx.q+dy.q*dy.q;
7440 if (dot_product < 0.25)
7441 continue;
7442 slope.q=0.0;
7443 inverse_slope.q=0.0;
7444 if (fabs(dx.q) < MagickEpsilon)
7445 {
7446 if (dx.q >= 0.0)
7447 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7448 else
7449 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7450 }
7451 else
7452 if (fabs(dy.q) < MagickEpsilon)
7453 {
7454 if (dy.q >= 0.0)
7455 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7456 else
7457 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7458 }
7459 else
7460 {
7461 slope.q=dy.q/dx.q;
7462 inverse_slope.q=(-1.0*PerceptibleReciprocal(slope.q));
7463 }
7464 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7465 offset.y=(double) (offset.x*inverse_slope.q);
7466 dot_product=dy.q*offset.x-dx.q*offset.y;
7467 if (dot_product > 0.0)
7468 {
7469 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7470 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7471 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7472 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7473 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7474 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7475 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7476 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7477 }
7478 else
7479 {
7480 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7481 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7482 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7483 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7484 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7485 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7486 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7487 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7488 }
7489 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7490 {
7491 box_p[4]=box_p[1];
7492 box_q[4]=box_q[1];
7493 }
7494 else
7495 {
7496 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7497 box_p[3].y)/(slope.p-slope.q));
7498 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7499 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7500 box_q[3].y)/(slope.p-slope.q));
7501 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7502 }
7503 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7504 dot_product=dx.q*dy.p-dx.p*dy.q;
7505 if (dot_product <= 0.0)
7506 switch (draw_info->linejoin)
7507 {
7508 case BevelJoin:
7509 {
7510 stroke_q[q++]=box_q[1];
7511 stroke_q[q++]=box_q[2];
7512 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7513 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7514 if (dot_product <= miterlimit)
7515 stroke_p[p++]=box_p[4];
7516 else
7517 {
7518 stroke_p[p++]=box_p[1];
7519 stroke_p[p++]=box_p[2];
7520 }
7521 break;
7522 }
7523 case MiterJoin:
7524 {
7525 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7526 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7527 if (dot_product <= miterlimit)
7528 {
7529 stroke_q[q++]=box_q[4];
7530 stroke_p[p++]=box_p[4];
7531 }
7532 else
7533 {
7534 stroke_q[q++]=box_q[1];
7535 stroke_q[q++]=box_q[2];
7536 stroke_p[p++]=box_p[1];
7537 stroke_p[p++]=box_p[2];
7538 }
7539 break;
7540 }
7541 case RoundJoin:
7542 {
7543 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7544 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7545 if (dot_product <= miterlimit)
7546 stroke_p[p++]=box_p[4];
7547 else
7548 {
7549 stroke_p[p++]=box_p[1];
7550 stroke_p[p++]=box_p[2];
7551 }
7552 center=polygon_primitive[n].point;
7553 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7554 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7555 if (theta.q < theta.p)
7556 theta.q+=2.0*MagickPI;
7557 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7558 theta.p)/(2.0*sqrt(PerceptibleReciprocal(mid))))));
7559 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7560 stroke_q[q].x=box_q[1].x;
7561 stroke_q[q].y=box_q[1].y;
7562 q++;
7563 for (j=1; j < (ssize_t) arc_segments; j++)
7564 {
7565 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7566 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7567 (theta.p+delta_theta),DegreesToRadians(360.0))));
7568 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7569 (theta.p+delta_theta),DegreesToRadians(360.0))));
7570 q++;
7571 }
7572 stroke_q[q++]=box_q[2];
7573 break;
7574 }
7575 default:
7576 break;
7577 }
7578 else
7579 switch (draw_info->linejoin)
7580 {
7581 case BevelJoin:
7582 {
7583 stroke_p[p++]=box_p[1];
7584 stroke_p[p++]=box_p[2];
7585 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7586 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7587 if (dot_product <= miterlimit)
7588 stroke_q[q++]=box_q[4];
7589 else
7590 {
7591 stroke_q[q++]=box_q[1];
7592 stroke_q[q++]=box_q[2];
7593 }
7594 break;
7595 }
7596 case MiterJoin:
7597 {
7598 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7599 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7600 if (dot_product <= miterlimit)
7601 {
7602 stroke_q[q++]=box_q[4];
7603 stroke_p[p++]=box_p[4];
7604 }
7605 else
7606 {
7607 stroke_q[q++]=box_q[1];
7608 stroke_q[q++]=box_q[2];
7609 stroke_p[p++]=box_p[1];
7610 stroke_p[p++]=box_p[2];
7611 }
7612 break;
7613 }
7614 case RoundJoin:
7615 {
7616 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7617 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7618 if (dot_product <= miterlimit)
7619 stroke_q[q++]=box_q[4];
7620 else
7621 {
7622 stroke_q[q++]=box_q[1];
7623 stroke_q[q++]=box_q[2];
7624 }
7625 center=polygon_primitive[n].point;
7626 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7627 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7628 if (theta.p < theta.q)
7629 theta.p+=2.0*MagickPI;
7630 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7631 theta.q)/(2.0*sqrt((double) (PerceptibleReciprocal(mid)))))));
7632 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7633 stroke_p[p++]=box_p[1];
7634 for (j=1; j < (ssize_t) arc_segments; j++)
7635 {
7636 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7637 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7638 (theta.p+delta_theta),DegreesToRadians(360.0))));
7639 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7640 (theta.p+delta_theta),DegreesToRadians(360.0))));
7641 p++;
7642 }
7643 stroke_p[p++]=box_p[2];
7644 break;
7645 }
7646 default:
7647 break;
7648 }
7649 slope.p=slope.q;
7650 inverse_slope.p=inverse_slope.q;
7651 box_p[0]=box_p[2];
7652 box_p[1]=box_p[3];
7653 box_q[0]=box_q[2];
7654 box_q[1]=box_q[3];
7655 dx.p=dx.q;
7656 dy.p=dy.q;
7657 n=i;
7658 }
7659 stroke_p[p++]=box_p[1];
7660 stroke_q[q++]=box_q[1];
7661 /*
7662 Trace stroked polygon.
7663 */
7664 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7665 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7666 if (stroke_polygon == (PrimitiveInfo *) NULL)
7667 {
7668 (void) ThrowMagickException(exception,GetMagickModule(),
7669 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7670 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7671 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7672 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7673 polygon_primitive);
7674 return(stroke_polygon);
7675 }
7676 for (i=0; i < (ssize_t) p; i++)
7677 {
7678 stroke_polygon[i]=polygon_primitive[0];
7679 stroke_polygon[i].point=stroke_p[i];
7680 }
7681 if (closed_path != MagickFalse)
7682 {
7683 stroke_polygon[i]=polygon_primitive[0];
7684 stroke_polygon[i].point=stroke_polygon[0].point;
7685 i++;
7686 }
7687 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7688 {
7689 stroke_polygon[i]=polygon_primitive[0];
7690 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7691 }
7692 if (closed_path != MagickFalse)
7693 {
7694 stroke_polygon[i]=polygon_primitive[0];
7695 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7696 i++;
7697 }
7698 stroke_polygon[i]=polygon_primitive[0];
7699 stroke_polygon[i].point=stroke_polygon[0].point;
7700 i++;
7701 stroke_polygon[i].primitive=UndefinedPrimitive;
7702 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7703 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7704 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7705 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7706 return(stroke_polygon);
7707}
_AffineMatrix
Definition geometry.h:96
_CacheView
Definition cache-view.c:66
_DrawInfo
Definition draw.h:212
_EdgeInfo
Definition draw.c:112
_ElementInfo
Definition draw.c:136
_ExceptionInfo
Definition exception.h:103
_GeometryInfo
Definition geometry.h:107
_GradientInfo
Definition draw.h:156
_ImageInfo
Definition image.h:346
_Image
Definition image.h:134
_MVGInfo
Definition draw.c:146
_MagickInfo
Definition magick.h:58
_MagickPixelPacket
Definition pixel.h:105
_PathInfo
Definition draw.c:182
_PixelPacket
Definition pixel.h:132
_PointInfo
Definition draw.h:140
_PolygonInfo
Definition draw.c:164
_PrimitiveInfo
Definition draw.h:364
_RectangleInfo
Definition geometry.h:124
_SegmentInfo
Definition image.h:87
_SplayTreeInfo
Definition splay-tree.c:83
_StopInfo
Definition draw.h:147
_TypeMetric
Definition draw.h:385