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=MagickSafeReciprocal(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 dash_polygon[0].closed_subpath=MagickFalse;
1790 scale=ExpandAffine(&draw_info->affine);
1791 length=scale*draw_info->dash_pattern[0];
1792 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1793 scale*draw_info->dash_offset : 0.0;
1794 j=1;
1795 for (n=0; offset > 0.0; j=0)
1796 {
1797 if (draw_info->dash_pattern[n] <= 0.0)
1798 break;
1799 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1800 if (offset > length)
1801 {
1802 offset-=length;
1803 n++;
1804 length=scale*draw_info->dash_pattern[n];
1805 continue;
1806 }
1807 if (offset < length)
1808 {
1809 length-=offset;
1810 offset=0.0;
1811 break;
1812 }
1813 offset=0.0;
1814 n++;
1815 }
1816 status=MagickTrue;
1817 maximum_length=0.0;
1818 total_length=0.0;
1819 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1820 {
1821 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1822 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1823 maximum_length=hypot(dx,dy);
1824 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1825 continue;
1826 if (fabs(length) < MagickEpsilon)
1827 {
1828 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1829 n++;
1830 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1831 n=0;
1832 length=scale*draw_info->dash_pattern[n];
1833 }
1834 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1835 {
1836 total_length+=length;
1837 if ((n & 0x01) != 0)
1838 {
1839 dash_polygon[0]=primitive_info[0];
1840 dash_polygon[0].closed_subpath=MagickFalse;
1841 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1842 total_length*MagickSafeReciprocal(maximum_length));
1843 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1844 total_length*MagickSafeReciprocal(maximum_length));
1845 j=1;
1846 }
1847 else
1848 {
1849 if ((j+1) > (ssize_t) number_vertices)
1850 break;
1851 dash_polygon[j]=primitive_info[i-1];
1852 dash_polygon[j].closed_subpath=MagickFalse;
1853 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1854 total_length*MagickSafeReciprocal(maximum_length));
1855 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1856 total_length*MagickSafeReciprocal(maximum_length));
1857 dash_polygon[j].coordinates=1;
1858 j++;
1859 dash_polygon[0].coordinates=(size_t) j;
1860 dash_polygon[j].primitive=UndefinedPrimitive;
1861 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1862 if (status == MagickFalse)
1863 break;
1864 }
1865 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1866 n++;
1867 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1868 n=0;
1869 length=scale*draw_info->dash_pattern[n];
1870 }
1871 length-=(maximum_length-total_length);
1872 if ((n & 0x01) != 0)
1873 continue;
1874 dash_polygon[j]=primitive_info[i];
1875 dash_polygon[j].coordinates=1;
1876 j++;
1877 }
1878 if ((status != MagickFalse) && (total_length < maximum_length) &&
1879 ((n & 0x01) == 0) && (j > 1))
1880 {
1881 dash_polygon[j]=primitive_info[i-1];
1882 dash_polygon[j].closed_subpath=MagickFalse;
1883 dash_polygon[j].point.x+=MagickEpsilon;
1884 dash_polygon[j].point.y+=MagickEpsilon;
1885 dash_polygon[j].coordinates=1;
1886 j++;
1887 dash_polygon[0].coordinates=(size_t) j;
1888 dash_polygon[j].primitive=UndefinedPrimitive;
1889 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1890 }
1891 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1892 clone_info=DestroyDrawInfo(clone_info);
1893 if (draw_info->debug != MagickFalse)
1894 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1895 return(status != 0 ? MagickTrue : MagickFalse);
1896}
1897␌
1898/*
1899%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1900% %
1901% %
1902% %
1903% D r a w G r a d i e n t I m a g e %
1904% %
1905% %
1906% %
1907%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1908%
1909% DrawGradientImage() draws a linear gradient on the image.
1910%
1911% The format of the DrawGradientImage method is:
1912%
1913% MagickBooleanType DrawGradientImage(Image *image,
1914% const DrawInfo *draw_info)
1915%
1916% A description of each parameter follows:
1917%
1918% o image: the image.
1919%
1920% o draw_info: the draw info.
1921%
1922*/
1923
1924static inline double GetStopColorOffset(const GradientInfo *gradient,
1925 const ssize_t x,const ssize_t y)
1926{
1927 switch (gradient->type)
1928 {
1929 case UndefinedGradient:
1930 case LinearGradient:
1931 {
1932 double
1933 gamma,
1934 length,
1935 offset,
1936 scale;
1937
1938 PointInfo
1939 p,
1940 q;
1941
1942 const SegmentInfo
1943 *gradient_vector;
1944
1945 gradient_vector=(&gradient->gradient_vector);
1946 p.x=gradient_vector->x2-gradient_vector->x1;
1947 p.y=gradient_vector->y2-gradient_vector->y1;
1948 q.x=(double) x-gradient_vector->x1;
1949 q.y=(double) y-gradient_vector->y1;
1950 length=sqrt(q.x*q.x+q.y*q.y);
1951 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1952 gamma=MagickSafeReciprocal(gamma);
1953 scale=p.x*q.x+p.y*q.y;
1954 offset=gamma*scale*length;
1955 return(offset);
1956 }
1957 case RadialGradient:
1958 {
1959 PointInfo
1960 v;
1961
1962 if (gradient->spread == RepeatSpread)
1963 {
1964 v.x=(double) x-gradient->center.x;
1965 v.y=(double) y-gradient->center.y;
1966 return(sqrt(v.x*v.x+v.y*v.y));
1967 }
1968 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1969 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1970 gradient->angle))))*MagickSafeReciprocal(gradient->radii.x);
1971 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1972 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1973 gradient->angle))))*MagickSafeReciprocal(gradient->radii.y);
1974 return(sqrt(v.x*v.x+v.y*v.y));
1975 }
1976 }
1977 return(0.0);
1978}
1979
1980MagickExport MagickBooleanType DrawGradientImage(Image *image,
1981 const DrawInfo *draw_info)
1982{
1983 CacheView
1984 *image_view;
1985
1986 const GradientInfo
1987 *gradient;
1988
1989 const SegmentInfo
1990 *gradient_vector;
1991
1992 double
1993 length;
1994
1995 ExceptionInfo
1996 *exception;
1997
1998 MagickBooleanType
1999 status;
2000
2001 MagickPixelPacket
2002 zero;
2003
2004 PointInfo
2005 point;
2006
2007 RectangleInfo
2008 bounding_box;
2009
2010 ssize_t
2011 height,
2012 y;
2013
2014 /*
2015 Draw linear or radial gradient on image.
2016 */
2017 assert(image != (Image *) NULL);
2018 assert(image->signature == MagickCoreSignature);
2019 assert(draw_info != (const DrawInfo *) NULL);
2020 if (IsEventLogging() != MagickFalse)
2021 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2022 gradient=(&draw_info->gradient);
2023 gradient_vector=(&gradient->gradient_vector);
2024 point.x=gradient_vector->x2-gradient_vector->x1;
2025 point.y=gradient_vector->y2-gradient_vector->y1;
2026 length=sqrt(point.x*point.x+point.y*point.y);
2027 bounding_box=gradient->bounding_box;
2028 status=MagickTrue;
2029 exception=(&image->exception);
2030 GetMagickPixelPacket(image,&zero);
2031 image_view=AcquireAuthenticCacheView(image,exception);
2032 height=(size_t) (bounding_box.y+bounding_box.height);
2033#if defined(MAGICKCORE_OPENMP_SUPPORT)
2034 #pragma omp parallel for schedule(static) shared(status) \
2035 magick_number_threads(image,image,height,1)
2036#endif
2037 for (y=bounding_box.y; y < (ssize_t) height; y++)
2038 {
2039 double
2040 alpha,
2041 offset;
2042
2043 MagickPixelPacket
2044 composite,
2045 pixel;
2046
2047 IndexPacket
2048 *magick_restrict indexes;
2049
2050 PixelPacket
2051 *magick_restrict q;
2052
2053 ssize_t
2054 i,
2055 j,
2056 width,
2057 x;
2058
2059 if (status == MagickFalse)
2060 continue;
2061 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2062 bounding_box.width,1,exception);
2063 if (q == (PixelPacket *) NULL)
2064 {
2065 status=MagickFalse;
2066 continue;
2067 }
2068 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2069 pixel=zero;
2070 composite=zero;
2071 offset=GetStopColorOffset(gradient,0,y);
2072 if (gradient->type != RadialGradient)
2073 offset*=MagickSafeReciprocal(length);
2074 width=(size_t) (bounding_box.x+bounding_box.width);
2075 for (x=bounding_box.x; x < (ssize_t) width; x++)
2076 {
2077 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2078 switch (gradient->spread)
2079 {
2080 case UndefinedSpread:
2081 case PadSpread:
2082 {
2083 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2084 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2085 {
2086 offset=GetStopColorOffset(gradient,x,y);
2087 if (gradient->type != RadialGradient)
2088 offset*=MagickSafeReciprocal(length);
2089 }
2090 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2091 if (offset < gradient->stops[i].offset)
2092 break;
2093 if ((offset < 0.0) || (i == 0))
2094 composite=gradient->stops[0].color;
2095 else
2096 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2097 composite=gradient->stops[gradient->number_stops-1].color;
2098 else
2099 {
2100 j=i;
2101 i--;
2102 alpha=(offset-gradient->stops[i].offset)/
2103 (gradient->stops[j].offset-gradient->stops[i].offset);
2104 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2105 &gradient->stops[j].color,alpha,&composite);
2106 }
2107 break;
2108 }
2109 case ReflectSpread:
2110 {
2111 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2112 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2113 {
2114 offset=GetStopColorOffset(gradient,x,y);
2115 if (gradient->type != RadialGradient)
2116 offset*=MagickSafeReciprocal(length);
2117 }
2118 if (offset < 0.0)
2119 offset=(-offset);
2120 if ((ssize_t) fmod(offset,2.0) == 0)
2121 offset=fmod(offset,1.0);
2122 else
2123 offset=1.0-fmod(offset,1.0);
2124 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2125 if (offset < gradient->stops[i].offset)
2126 break;
2127 if (i == 0)
2128 composite=gradient->stops[0].color;
2129 else
2130 if (i == (ssize_t) gradient->number_stops)
2131 composite=gradient->stops[gradient->number_stops-1].color;
2132 else
2133 {
2134 j=i;
2135 i--;
2136 alpha=(offset-gradient->stops[i].offset)/
2137 (gradient->stops[j].offset-gradient->stops[i].offset);
2138 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2139 &gradient->stops[j].color,alpha,&composite);
2140 }
2141 break;
2142 }
2143 case RepeatSpread:
2144 {
2145 double
2146 repeat;
2147
2148 MagickBooleanType
2149 antialias;
2150
2151 antialias=MagickFalse;
2152 repeat=0.0;
2153 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2154 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2155 {
2156 offset=GetStopColorOffset(gradient,x,y);
2157 if (gradient->type == LinearGradient)
2158 {
2159 repeat=fmod(offset,length);
2160 if (repeat < 0.0)
2161 repeat=length-fmod(-repeat,length);
2162 else
2163 repeat=fmod(offset,length);
2164 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2165 MagickTrue : MagickFalse;
2166 offset=MagickSafeReciprocal(length)*repeat;
2167 }
2168 else
2169 {
2170 repeat=fmod(offset,(double) gradient->radius);
2171 if (repeat < 0.0)
2172 repeat=gradient->radius-fmod(-repeat,
2173 (double) gradient->radius);
2174 else
2175 repeat=fmod(offset,(double) gradient->radius);
2176 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2177 MagickFalse;
2178 offset=repeat*MagickSafeReciprocal(gradient->radius);
2179 }
2180 }
2181 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2182 if (offset < gradient->stops[i].offset)
2183 break;
2184 if (i == 0)
2185 composite=gradient->stops[0].color;
2186 else
2187 if (i == (ssize_t) gradient->number_stops)
2188 composite=gradient->stops[gradient->number_stops-1].color;
2189 else
2190 {
2191 j=i;
2192 i--;
2193 alpha=(offset-gradient->stops[i].offset)/
2194 (gradient->stops[j].offset-gradient->stops[i].offset);
2195 if (antialias != MagickFalse)
2196 {
2197 if (gradient->type == LinearGradient)
2198 alpha=length-repeat;
2199 else
2200 alpha=gradient->radius-repeat;
2201 i=0;
2202 j=(ssize_t) gradient->number_stops-1L;
2203 }
2204 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2205 &gradient->stops[j].color,alpha,&composite);
2206 }
2207 break;
2208 }
2209 }
2210 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2211 pixel.opacity,&pixel);
2212 SetPixelPacket(image,&pixel,q,indexes+x);
2213 q++;
2214 }
2215 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2216 status=MagickFalse;
2217 }
2218 image_view=DestroyCacheView(image_view);
2219 return(status);
2220}
2221␌
2222/*
2223%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2224% %
2225% %
2226% %
2227% D r a w I m a g e %
2228% %
2229% %
2230% %
2231%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2232%
2233% DrawImage() draws a graphic primitive on your image. The primitive
2234% may be represented as a string or filename. Precede the filename with an
2235% "at" sign (@) and the contents of the file are drawn on the image. You
2236% can affect how text is drawn by setting one or more members of the draw
2237% info structure.
2238%
2239% The format of the DrawImage method is:
2240%
2241% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2242%
2243% A description of each parameter follows:
2244%
2245% o image: the image.
2246%
2247% o draw_info: the draw info.
2248%
2249*/
2250
2251static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2252 const double pad)
2253{
2254 char
2255 **text = (char **) NULL;
2256
2257 double
2258 extent;
2259
2260 size_t
2261 quantum;
2262
2263 ssize_t
2264 i;
2265
2266 /*
2267 Check if there is enough storage for drawing primitives.
2268 */
2269 quantum=sizeof(**mvg_info->primitive_info);
2270 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2271 if (extent <= (double) *mvg_info->extent)
2272 return(MagickTrue);
2273 if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2274 return(MagickFalse);
2275 if (mvg_info->offset > 0)
2276 {
2277 text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2278 if (text == (char **) NULL)
2279 return(MagickFalse);
2280 for (i=0; i < mvg_info->offset; i++)
2281 text[i]=(*mvg_info->primitive_info)[i].text;
2282 }
2283 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2284 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2285 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2286 {
2287 if (text != (char **) NULL)
2288 text=(char **) RelinquishMagickMemory(text);
2289 *mvg_info->extent=(size_t) extent;
2290 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2291 {
2292 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2293 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2294 }
2295 return(MagickTrue);
2296 }
2297 /*
2298 Reallocation failed, allocate a primitive to facilitate unwinding.
2299 */
2300 if (text != (char **) NULL)
2301 {
2302 for (i=0; i < mvg_info->offset; i++)
2303 if (text[i] != (char *) NULL)
2304 text[i]=DestroyString(text[i]);
2305 text=(char **) RelinquishMagickMemory(text);
2306 }
2307 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2308 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2309 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2310 (PrimitiveExtentPad+1)*quantum);
2311 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2312 quantum));
2313 *mvg_info->extent=1;
2314 mvg_info->offset=0;
2315 return(MagickFalse);
2316}
2317
2318static inline double GetDrawValue(const char *magick_restrict string,
2319 char **magick_restrict sentinel)
2320{
2321 char
2322 **magick_restrict q;
2323
2324 double
2325 value;
2326
2327 q=sentinel;
2328 value=InterpretLocaleValue(string,q);
2329 sentinel=q;
2330 return(value);
2331}
2332
2333static int MVGMacroCompare(const void *target,const void *source)
2334{
2335 const char
2336 *p,
2337 *q;
2338
2339 p=(const char *) target;
2340 q=(const char *) source;
2341 return(strcmp(p,q));
2342}
2343
2344static SplayTreeInfo *GetMVGMacros(const char *primitive)
2345{
2346 char
2347 *macro,
2348 *token;
2349
2350 const char
2351 *q;
2352
2353 size_t
2354 extent;
2355
2356 SplayTreeInfo
2357 *macros;
2358
2359 /*
2360 Scan graphic primitives for definitions and classes.
2361 */
2362 if (primitive == (const char *) NULL)
2363 return((SplayTreeInfo *) NULL);
2364 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2365 RelinquishMagickMemory);
2366 macro=AcquireString(primitive);
2367 token=AcquireString(primitive);
2368 extent=strlen(token)+MagickPathExtent;
2369 for (q=primitive; *q != '\0'; )
2370 {
2371 if (GetNextToken(q,&q,extent,token) < 1)
2372 break;
2373 if (*token == '\0')
2374 break;
2375 if (LocaleCompare("push",token) == 0)
2376 {
2377 const char
2378 *end,
2379 *start;
2380
2381 (void) GetNextToken(q,&q,extent,token);
2382 if (*q == '"')
2383 {
2384 char
2385 name[MagickPathExtent];
2386
2387 const char
2388 *p;
2389
2390 ssize_t
2391 n;
2392
2393 /*
2394 Named macro (e.g. push graphic-context "wheel").
2395 */
2396 (void) GetNextToken(q,&q,extent,token);
2397 start=q;
2398 end=q;
2399 (void) CopyMagickString(name,token,MagickPathExtent);
2400 n=1;
2401 for (p=q; *p != '\0'; )
2402 {
2403 if (GetNextToken(p,&p,extent,token) < 1)
2404 break;
2405 if (*token == '\0')
2406 break;
2407 if (LocaleCompare(token,"pop") == 0)
2408 {
2409 end=p-strlen(token)-1;
2410 n--;
2411 }
2412 if (LocaleCompare(token,"push") == 0)
2413 n++;
2414 if ((n == 0) && (end >= start))
2415 {
2416 size_t
2417 length=(size_t) (end-start);
2418
2419 /*
2420 Extract macro.
2421 */
2422 (void) GetNextToken(p,&p,extent,token);
2423 if (length > 0)
2424 {
2425 (void) CopyMagickString(macro,start,length);
2426 (void) AddValueToSplayTree(macros,ConstantString(name),
2427 ConstantString(macro));
2428 }
2429 break;
2430 }
2431 }
2432 }
2433 }
2434 }
2435 token=DestroyString(token);
2436 macro=DestroyString(macro);
2437 return(macros);
2438}
2439
2440static inline MagickBooleanType IsPoint(const char *point)
2441{
2442 char
2443 *p;
2444
2445 double
2446 value;
2447
2448 value=GetDrawValue(point,&p);
2449 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2450 MagickTrue);
2451}
2452
2453static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2454 const PointInfo point)
2455{
2456 primitive_info->coordinates=1;
2457 primitive_info->closed_subpath=MagickFalse;
2458 primitive_info->point=point;
2459 return(MagickTrue);
2460}
2461
2462static MagickBooleanType RenderMVGContent(Image *image,
2463 const DrawInfo *draw_info,const size_t depth)
2464{
2465#define RenderImageTag "Render/Image"
2466
2467 AffineMatrix
2468 affine,
2469 current;
2470
2471 char
2472 key[2*MaxTextExtent],
2473 keyword[MaxTextExtent],
2474 geometry[MaxTextExtent],
2475 name[MaxTextExtent],
2476 *next_token,
2477 pattern[MaxTextExtent],
2478 *primitive,
2479 *token;
2480
2481 const char
2482 *p,
2483 *q;
2484
2485 double
2486 angle,
2487 coordinates,
2488 cursor,
2489 factor,
2490 primitive_extent;
2491
2492 DrawInfo
2493 *clone_info,
2494 **graphic_context;
2495
2496 MagickBooleanType
2497 proceed;
2498
2499 MagickStatusType
2500 status;
2501
2502 MVGInfo
2503 mvg_info;
2504
2505 PointInfo
2506 point;
2507
2508 PixelPacket
2509 start_color;
2510
2511 PrimitiveInfo
2512 *primitive_info;
2513
2514 PrimitiveType
2515 primitive_type;
2516
2517 SegmentInfo
2518 bounds;
2519
2520 size_t
2521 extent,
2522 number_points;
2523
2524 SplayTreeInfo
2525 *macros;
2526
2527 ssize_t
2528 defsDepth,
2529 i,
2530 j,
2531 k,
2532 n,
2533 symbolDepth,
2534 x;
2535
2536 TypeMetric
2537 metrics;
2538
2539 assert(image != (Image *) NULL);
2540 assert(image->signature == MagickCoreSignature);
2541 assert(draw_info != (DrawInfo *) NULL);
2542 assert(draw_info->signature == MagickCoreSignature);
2543 if (IsEventLogging() != MagickFalse)
2544 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2545 if (depth > MagickMaxRecursionDepth)
2546 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2547 image->filename);
2548 if ((draw_info->primitive == (char *) NULL) ||
2549 (*draw_info->primitive == '\0'))
2550 return(MagickFalse);
2551 if (draw_info->debug != MagickFalse)
2552 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2553 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2554 return(MagickFalse);
2555 if (image->matte == MagickFalse)
2556 {
2557 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2558 if (status == MagickFalse)
2559 return(MagickFalse);
2560 }
2561 primitive=(char *) NULL;
2562 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2563 (*(draw_info->primitive+1) != '-') && (depth == 0))
2564 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2565 else
2566 primitive=AcquireString(draw_info->primitive);
2567 if (primitive == (char *) NULL)
2568 return(MagickFalse);
2569 primitive_extent=(double) strlen(primitive);
2570 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2571 n=0;
2572 /*
2573 Allocate primitive info memory.
2574 */
2575 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2576 if (graphic_context == (DrawInfo **) NULL)
2577 {
2578 primitive=DestroyString(primitive);
2579 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2580 image->filename);
2581 }
2582 number_points=(size_t) PrimitiveExtentPad;
2583 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2584 (number_points+1),sizeof(*primitive_info));
2585 if (primitive_info == (PrimitiveInfo *) NULL)
2586 {
2587 primitive=DestroyString(primitive);
2588 for ( ; n >= 0; n--)
2589 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2590 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2591 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2592 image->filename);
2593 }
2594 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2595 sizeof(*primitive_info));
2596 (void) memset(&mvg_info,0,sizeof(mvg_info));
2597 mvg_info.primitive_info=(&primitive_info);
2598 mvg_info.extent=(&number_points);
2599 mvg_info.exception=(&image->exception);
2600 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2601 graphic_context[n]->viewbox=image->page;
2602 if ((image->page.width == 0) || (image->page.height == 0))
2603 {
2604 graphic_context[n]->viewbox.width=image->columns;
2605 graphic_context[n]->viewbox.height=image->rows;
2606 }
2607 token=AcquireString(primitive);
2608 extent=strlen(token)+MaxTextExtent;
2609 cursor=0.0;
2610 defsDepth=0;
2611 symbolDepth=0;
2612 macros=GetMVGMacros(primitive);
2613 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2614 for (q=primitive; *q != '\0'; )
2615 {
2616 /*
2617 Interpret graphic primitive.
2618 */
2619 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2620 break;
2621 if (*keyword == '\0')
2622 break;
2623 if (*keyword == '#')
2624 {
2625 /*
2626 Comment.
2627 */
2628 while ((*q != '\n') && (*q != '\0'))
2629 q++;
2630 continue;
2631 }
2632 p=q-strlen(keyword)-1;
2633 primitive_type=UndefinedPrimitive;
2634 current=graphic_context[n]->affine;
2635 GetAffineMatrix(&affine);
2636 *token='\0';
2637 switch (*keyword)
2638 {
2639 case ';':
2640 break;
2641 case 'a':
2642 case 'A':
2643 {
2644 if (LocaleCompare("affine",keyword) == 0)
2645 {
2646 (void) GetNextToken(q,&q,extent,token);
2647 affine.sx=GetDrawValue(token,&next_token);
2648 if (token == next_token)
2649 ThrowPointExpectedException(image,token);
2650 (void) GetNextToken(q,&q,extent,token);
2651 if (*token == ',')
2652 (void) GetNextToken(q,&q,extent,token);
2653 affine.ry=GetDrawValue(token,&next_token);
2654 if (token == next_token)
2655 ThrowPointExpectedException(image,token);
2656 (void) GetNextToken(q,&q,extent,token);
2657 if (*token == ',')
2658 (void) GetNextToken(q,&q,extent,token);
2659 affine.rx=GetDrawValue(token,&next_token);
2660 if (token == next_token)
2661 ThrowPointExpectedException(image,token);
2662 (void) GetNextToken(q,&q,extent,token);
2663 if (*token == ',')
2664 (void) GetNextToken(q,&q,extent,token);
2665 affine.sy=GetDrawValue(token,&next_token);
2666 if (token == next_token)
2667 ThrowPointExpectedException(image,token);
2668 (void) GetNextToken(q,&q,extent,token);
2669 if (*token == ',')
2670 (void) GetNextToken(q,&q,extent,token);
2671 affine.tx=GetDrawValue(token,&next_token);
2672 if (token == next_token)
2673 ThrowPointExpectedException(image,token);
2674 (void) GetNextToken(q,&q,extent,token);
2675 if (*token == ',')
2676 (void) GetNextToken(q,&q,extent,token);
2677 affine.ty=GetDrawValue(token,&next_token);
2678 if (token == next_token)
2679 ThrowPointExpectedException(image,token);
2680 break;
2681 }
2682 if (LocaleCompare("arc",keyword) == 0)
2683 {
2684 primitive_type=ArcPrimitive;
2685 break;
2686 }
2687 status=MagickFalse;
2688 break;
2689 }
2690 case 'b':
2691 case 'B':
2692 {
2693 if (LocaleCompare("bezier",keyword) == 0)
2694 {
2695 primitive_type=BezierPrimitive;
2696 break;
2697 }
2698 if (LocaleCompare("border-color",keyword) == 0)
2699 {
2700 (void) GetNextToken(q,&q,extent,token);
2701 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2702 &image->exception);
2703 break;
2704 }
2705 status=MagickFalse;
2706 break;
2707 }
2708 case 'c':
2709 case 'C':
2710 {
2711 if (LocaleCompare("class",keyword) == 0)
2712 {
2713 const char
2714 *mvg_class;
2715
2716 (void) GetNextToken(q,&q,extent,token);
2717 if ((*token == '\0') || (*token == ';'))
2718 {
2719 status=MagickFalse;
2720 break;
2721 }
2722 /*
2723 Identify recursion.
2724 */
2725 for (i=0; i <= n; i++)
2726 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2727 break;
2728 if (i <= n)
2729 break;
2730 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2731 if ((graphic_context[n]->render != MagickFalse) &&
2732 (mvg_class != (const char *) NULL) && (p > primitive))
2733 {
2734 char
2735 *elements;
2736
2737 ssize_t
2738 offset;
2739
2740 /*
2741 Inject class elements in stream.
2742 */
2743 (void) CloneString(&graphic_context[n]->id,token);
2744 offset=(ssize_t) (p-primitive);
2745 elements=AcquireString(primitive);
2746 elements[offset]='\0';
2747 (void) ConcatenateString(&elements,mvg_class);
2748 (void) ConcatenateString(&elements,"\n");
2749 (void) ConcatenateString(&elements,q);
2750 primitive=DestroyString(primitive);
2751 primitive=elements;
2752 q=primitive+offset;
2753 }
2754 break;
2755 }
2756 if (LocaleCompare("clip-path",keyword) == 0)
2757 {
2758 const char
2759 *clip_path;
2760
2761 /*
2762 Take a node from within the MVG document, and duplicate it here.
2763 */
2764 (void) GetNextToken(q,&q,extent,token);
2765 if (*token == '\0')
2766 {
2767 status=MagickFalse;
2768 break;
2769 }
2770 (void) CloneString(&graphic_context[n]->clip_mask,token);
2771 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2772 if (clip_path != (const char *) NULL)
2773 {
2774 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2775 graphic_context[n]->clipping_mask=
2776 DestroyImage(graphic_context[n]->clipping_mask);
2777 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2778 graphic_context[n],token,clip_path,&image->exception);
2779 if (graphic_context[n]->compliance != SVGCompliance)
2780 {
2781 const char
2782 *clip_path;
2783
2784 clip_path=(const char *) GetValueFromSplayTree(macros,
2785 graphic_context[n]->clip_mask);
2786 if (clip_path != (const char *) NULL)
2787 (void) SetImageArtifact(image,
2788 graphic_context[n]->clip_mask,clip_path);
2789 status&=DrawClipPath(image,graphic_context[n],
2790 graphic_context[n]->clip_mask);
2791 }
2792 }
2793 break;
2794 }
2795 if (LocaleCompare("clip-rule",keyword) == 0)
2796 {
2797 ssize_t
2798 fill_rule;
2799
2800 (void) GetNextToken(q,&q,extent,token);
2801 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2802 token);
2803 if (fill_rule == -1)
2804 {
2805 status=MagickFalse;
2806 break;
2807 }
2808 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2809 break;
2810 }
2811 if (LocaleCompare("clip-units",keyword) == 0)
2812 {
2813 ssize_t
2814 clip_units;
2815
2816 (void) GetNextToken(q,&q,extent,token);
2817 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2818 token);
2819 if (clip_units == -1)
2820 {
2821 status=MagickFalse;
2822 break;
2823 }
2824 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2825 if (clip_units == ObjectBoundingBox)
2826 {
2827 GetAffineMatrix(&current);
2828 affine.sx=draw_info->bounds.x2;
2829 affine.sy=draw_info->bounds.y2;
2830 affine.tx=draw_info->bounds.x1;
2831 affine.ty=draw_info->bounds.y1;
2832 break;
2833 }
2834 break;
2835 }
2836 if (LocaleCompare("circle",keyword) == 0)
2837 {
2838 primitive_type=CirclePrimitive;
2839 break;
2840 }
2841 if (LocaleCompare("color",keyword) == 0)
2842 {
2843 primitive_type=ColorPrimitive;
2844 break;
2845 }
2846 if (LocaleCompare("compliance",keyword) == 0)
2847 {
2848 /*
2849 MVG compliance associates a clipping mask with an image; SVG
2850 compliance associates a clipping mask with a graphics context.
2851 */
2852 (void) GetNextToken(q,&q,extent,token);
2853 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2854 MagickComplianceOptions,MagickFalse,token);
2855 break;
2856 }
2857 if (LocaleCompare("currentColor",keyword) == 0)
2858 {
2859 (void) GetNextToken(q,&q,extent,token);
2860 break;
2861 }
2862 status=MagickFalse;
2863 break;
2864 }
2865 case 'd':
2866 case 'D':
2867 {
2868 if (LocaleCompare("decorate",keyword) == 0)
2869 {
2870 ssize_t
2871 decorate;
2872
2873 (void) GetNextToken(q,&q,extent,token);
2874 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2875 token);
2876 if (decorate == -1)
2877 {
2878 status=MagickFalse;
2879 break;
2880 }
2881 graphic_context[n]->decorate=(DecorationType) decorate;
2882 break;
2883 }
2884 if (LocaleCompare("density",keyword) == 0)
2885 {
2886 (void) GetNextToken(q,&q,extent,token);
2887 (void) CloneString(&graphic_context[n]->density,token);
2888 break;
2889 }
2890 if (LocaleCompare("direction",keyword) == 0)
2891 {
2892 ssize_t
2893 direction;
2894
2895 (void) GetNextToken(q,&q,extent,token);
2896 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2897 token);
2898 if (direction == -1)
2899 status=MagickFalse;
2900 else
2901 graphic_context[n]->direction=(DirectionType) direction;
2902 break;
2903 }
2904 status=MagickFalse;
2905 break;
2906 }
2907 case 'e':
2908 case 'E':
2909 {
2910 if (LocaleCompare("ellipse",keyword) == 0)
2911 {
2912 primitive_type=EllipsePrimitive;
2913 break;
2914 }
2915 if (LocaleCompare("encoding",keyword) == 0)
2916 {
2917 (void) GetNextToken(q,&q,extent,token);
2918 (void) CloneString(&graphic_context[n]->encoding,token);
2919 break;
2920 }
2921 status=MagickFalse;
2922 break;
2923 }
2924 case 'f':
2925 case 'F':
2926 {
2927 if (LocaleCompare("fill",keyword) == 0)
2928 {
2929 const char
2930 *mvg_class;
2931
2932 (void) GetNextToken(q,&q,extent,token);
2933 if (graphic_context[n]->clip_path != MagickFalse)
2934 break;
2935 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2936 if (mvg_class != (const char *) NULL)
2937 {
2938 (void) DrawPatternPath(image,draw_info,mvg_class,
2939 &graphic_context[n]->fill_pattern);
2940 break;
2941 }
2942 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2943 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2944 {
2945 (void) DrawPatternPath(image,draw_info,token,
2946 &graphic_context[n]->fill_pattern);
2947 break;
2948 }
2949 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2950 &image->exception);
2951 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2952 graphic_context[n]->fill.opacity=ClampToQuantum(
2953 graphic_context[n]->fill_opacity);
2954 break;
2955 }
2956 if (LocaleCompare("fill-opacity",keyword) == 0)
2957 {
2958 double
2959 opacity;
2960
2961 (void) GetNextToken(q,&q,extent,token);
2962 if (graphic_context[n]->clip_path != MagickFalse)
2963 break;
2964 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2965 opacity=MagickMin(MagickMax(factor*
2966 GetDrawValue(token,&next_token),0.0),1.0);
2967 if (token == next_token)
2968 ThrowPointExpectedException(image,token);
2969 if (graphic_context[n]->compliance == SVGCompliance)
2970 graphic_context[n]->fill_opacity*=(1.0-opacity);
2971 else
2972 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2973 graphic_context[n]->fill_opacity)*(1.0-opacity);
2974 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2975 graphic_context[n]->fill.opacity=(Quantum)
2976 graphic_context[n]->fill_opacity;
2977 else
2978 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2979 QuantumRange*(1.0-opacity));
2980 break;
2981 }
2982 if (LocaleCompare("fill-rule",keyword) == 0)
2983 {
2984 ssize_t
2985 fill_rule;
2986
2987 (void) GetNextToken(q,&q,extent,token);
2988 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2989 token);
2990 if (fill_rule == -1)
2991 {
2992 status=MagickFalse;
2993 break;
2994 }
2995 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2996 break;
2997 }
2998 if (LocaleCompare("font",keyword) == 0)
2999 {
3000 (void) GetNextToken(q,&q,extent,token);
3001 (void) CloneString(&graphic_context[n]->font,token);
3002 if (LocaleCompare("none",token) == 0)
3003 graphic_context[n]->font=(char *) RelinquishMagickMemory(
3004 graphic_context[n]->font);
3005 break;
3006 }
3007 if (LocaleCompare("font-family",keyword) == 0)
3008 {
3009 (void) GetNextToken(q,&q,extent,token);
3010 (void) CloneString(&graphic_context[n]->family,token);
3011 break;
3012 }
3013 if (LocaleCompare("font-size",keyword) == 0)
3014 {
3015 (void) GetNextToken(q,&q,extent,token);
3016 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3017 if (token == next_token)
3018 ThrowPointExpectedException(image,token);
3019 break;
3020 }
3021 if (LocaleCompare("font-stretch",keyword) == 0)
3022 {
3023 ssize_t
3024 stretch;
3025
3026 (void) GetNextToken(q,&q,extent,token);
3027 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3028 if (stretch == -1)
3029 {
3030 status=MagickFalse;
3031 break;
3032 }
3033 graphic_context[n]->stretch=(StretchType) stretch;
3034 break;
3035 }
3036 if (LocaleCompare("font-style",keyword) == 0)
3037 {
3038 ssize_t
3039 style;
3040
3041 (void) GetNextToken(q,&q,extent,token);
3042 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3043 if (style == -1)
3044 {
3045 status=MagickFalse;
3046 break;
3047 }
3048 graphic_context[n]->style=(StyleType) style;
3049 break;
3050 }
3051 if (LocaleCompare("font-weight",keyword) == 0)
3052 {
3053 ssize_t
3054 weight;
3055
3056 (void) GetNextToken(q,&q,extent,token);
3057 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3058 if (weight == -1)
3059 weight=(ssize_t) StringToUnsignedLong(token);
3060 graphic_context[n]->weight=(size_t) weight;
3061 break;
3062 }
3063 status=MagickFalse;
3064 break;
3065 }
3066 case 'g':
3067 case 'G':
3068 {
3069 if (LocaleCompare("gradient-units",keyword) == 0)
3070 {
3071 (void) GetNextToken(q,&q,extent,token);
3072 break;
3073 }
3074 if (LocaleCompare("gravity",keyword) == 0)
3075 {
3076 ssize_t
3077 gravity;
3078
3079 (void) GetNextToken(q,&q,extent,token);
3080 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3081 if (gravity == -1)
3082 {
3083 status=MagickFalse;
3084 break;
3085 }
3086 graphic_context[n]->gravity=(GravityType) gravity;
3087 break;
3088 }
3089 status=MagickFalse;
3090 break;
3091 }
3092 case 'i':
3093 case 'I':
3094 {
3095 if (LocaleCompare("image",keyword) == 0)
3096 {
3097 ssize_t
3098 compose;
3099
3100 primitive_type=ImagePrimitive;
3101 (void) GetNextToken(q,&q,extent,token);
3102 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3103 if (compose == -1)
3104 {
3105 status=MagickFalse;
3106 break;
3107 }
3108 graphic_context[n]->compose=(CompositeOperator) compose;
3109 break;
3110 }
3111 if (LocaleCompare("interline-spacing",keyword) == 0)
3112 {
3113 (void) GetNextToken(q,&q,extent,token);
3114 graphic_context[n]->interline_spacing=GetDrawValue(token,
3115 &next_token);
3116 if (token == next_token)
3117 ThrowPointExpectedException(image,token);
3118 break;
3119 }
3120 if (LocaleCompare("interword-spacing",keyword) == 0)
3121 {
3122 (void) GetNextToken(q,&q,extent,token);
3123 graphic_context[n]->interword_spacing=GetDrawValue(token,
3124 &next_token);
3125 if (token == next_token)
3126 ThrowPointExpectedException(image,token);
3127 break;
3128 }
3129 status=MagickFalse;
3130 break;
3131 }
3132 case 'k':
3133 case 'K':
3134 {
3135 if (LocaleCompare("kerning",keyword) == 0)
3136 {
3137 (void) GetNextToken(q,&q,extent,token);
3138 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3139 if (token == next_token)
3140 ThrowPointExpectedException(image,token);
3141 break;
3142 }
3143 status=MagickFalse;
3144 break;
3145 }
3146 case 'l':
3147 case 'L':
3148 {
3149 if (LocaleCompare("letter-spacing",keyword) == 0)
3150 {
3151 (void) GetNextToken(q,&q,extent,token);
3152 if (IsPoint(token) == MagickFalse)
3153 break;
3154 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3155 clone_info->text=AcquireString(" ");
3156 status&=GetTypeMetrics(image,clone_info,&metrics);
3157 graphic_context[n]->kerning=metrics.width*
3158 GetDrawValue(token,&next_token);
3159 clone_info=DestroyDrawInfo(clone_info);
3160 if (token == next_token)
3161 ThrowPointExpectedException(image,token);
3162 break;
3163 }
3164 if (LocaleCompare("line",keyword) == 0)
3165 {
3166 primitive_type=LinePrimitive;
3167 break;
3168 }
3169 status=MagickFalse;
3170 break;
3171 }
3172 case 'm':
3173 case 'M':
3174 {
3175 if (LocaleCompare("mask",keyword) == 0)
3176 {
3177 const char
3178 *mask_path;
3179
3180 /*
3181 Take a node from within the MVG document, and duplicate it here.
3182 */
3183 (void) GetNextToken(q,&q,extent,token);
3184 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3185 if (mask_path != (const char *) NULL)
3186 {
3187 if (graphic_context[n]->composite_mask != (Image *) NULL)
3188 graphic_context[n]->composite_mask=
3189 DestroyImage(graphic_context[n]->composite_mask);
3190 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3191 graphic_context[n],token,mask_path,&image->exception);
3192 if (graphic_context[n]->compliance != SVGCompliance)
3193 status=SetImageMask(image,graphic_context[n]->composite_mask);
3194 }
3195 break;
3196 }
3197 if (LocaleCompare("matte",keyword) == 0)
3198 {
3199 primitive_type=MattePrimitive;
3200 break;
3201 }
3202 status=MagickFalse;
3203 break;
3204 }
3205 case 'o':
3206 case 'O':
3207 {
3208 if (LocaleCompare("offset",keyword) == 0)
3209 {
3210 (void) GetNextToken(q,&q,extent,token);
3211 break;
3212 }
3213 if (LocaleCompare("opacity",keyword) == 0)
3214 {
3215 double
3216 opacity;
3217
3218 (void) GetNextToken(q,&q,extent,token);
3219 if (graphic_context[n]->clip_path != MagickFalse)
3220 break;
3221 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3222 opacity=1.0-MagickMin(MagickMax(factor*
3223 GetDrawValue(token,&next_token),0.0),1.0);
3224 if (token == next_token)
3225 ThrowPointExpectedException(image,token);
3226 if (graphic_context[n]->compliance == SVGCompliance)
3227 {
3228 graphic_context[n]->fill_opacity*=opacity;
3229 graphic_context[n]->stroke_opacity*=opacity;
3230 }
3231 else
3232 {
3233 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3234 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3235 opacity;
3236 }
3237 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3238 {
3239 graphic_context[n]->fill.opacity=
3240 graphic_context[n]->fill_opacity;
3241 graphic_context[n]->stroke.opacity=
3242 graphic_context[n]->stroke_opacity;
3243 }
3244 else
3245 {
3246 graphic_context[n]->fill.opacity=(MagickRealType)
3247 ClampToQuantum((double) QuantumRange*opacity);
3248 graphic_context[n]->stroke.opacity=(MagickRealType)
3249 ClampToQuantum((double) QuantumRange*opacity);
3250 }
3251 break;
3252 }
3253 status=MagickFalse;
3254 break;
3255 }
3256 case 'p':
3257 case 'P':
3258 {
3259 if (LocaleCompare("path",keyword) == 0)
3260 {
3261 primitive_type=PathPrimitive;
3262 break;
3263 }
3264 if (LocaleCompare("point",keyword) == 0)
3265 {
3266 primitive_type=PointPrimitive;
3267 break;
3268 }
3269 if (LocaleCompare("polyline",keyword) == 0)
3270 {
3271 primitive_type=PolylinePrimitive;
3272 break;
3273 }
3274 if (LocaleCompare("polygon",keyword) == 0)
3275 {
3276 primitive_type=PolygonPrimitive;
3277 break;
3278 }
3279 if (LocaleCompare("pop",keyword) == 0)
3280 {
3281 if (GetNextToken(q,&q,extent,token) < 1)
3282 break;
3283 if (LocaleCompare("class",token) == 0)
3284 break;
3285 if (LocaleCompare("clip-path",token) == 0)
3286 break;
3287 if (LocaleCompare("defs",token) == 0)
3288 {
3289 defsDepth--;
3290 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3291 MagickTrue;
3292 break;
3293 }
3294 if (LocaleCompare("gradient",token) == 0)
3295 break;
3296 if (LocaleCompare("graphic-context",token) == 0)
3297 {
3298 if (n <= 0)
3299 {
3300 (void) ThrowMagickException(&image->exception,
3301 GetMagickModule(),DrawError,
3302 "UnbalancedGraphicContextPushPop","`%s'",token);
3303 status=MagickFalse;
3304 n=0;
3305 break;
3306 }
3307 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3308 (graphic_context[n]->compliance != SVGCompliance))
3309 if (LocaleCompare(graphic_context[n]->clip_mask,
3310 graphic_context[n-1]->clip_mask) != 0)
3311 status=SetImageClipMask(image,(Image *) NULL);
3312 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3313 n--;
3314 break;
3315 }
3316 if (LocaleCompare("mask",token) == 0)
3317 break;
3318 if (LocaleCompare("pattern",token) == 0)
3319 break;
3320 if (LocaleCompare("symbol",token) == 0)
3321 {
3322 symbolDepth--;
3323 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3324 MagickTrue;
3325 break;
3326 }
3327 status=MagickFalse;
3328 break;
3329 }
3330 if (LocaleCompare("push",keyword) == 0)
3331 {
3332 if (GetNextToken(q,&q,extent,token) < 1)
3333 break;
3334 if (LocaleCompare("class",token) == 0)
3335 {
3336 /*
3337 Class context.
3338 */
3339 for (p=q; *q != '\0'; )
3340 {
3341 if (GetNextToken(q,&q,extent,token) < 1)
3342 break;
3343 if (LocaleCompare(token,"pop") != 0)
3344 continue;
3345 (void) GetNextToken(q,(const char **) NULL,extent,token);
3346 if (LocaleCompare(token,"class") != 0)
3347 continue;
3348 break;
3349 }
3350 (void) GetNextToken(q,&q,extent,token);
3351 break;
3352 }
3353 if (LocaleCompare("clip-path",token) == 0)
3354 {
3355 (void) GetNextToken(q,&q,extent,token);
3356 for (p=q; *q != '\0'; )
3357 {
3358 if (GetNextToken(q,&q,extent,token) < 1)
3359 break;
3360 if (LocaleCompare(token,"pop") != 0)
3361 continue;
3362 (void) GetNextToken(q,(const char **) NULL,extent,token);
3363 if (LocaleCompare(token,"clip-path") != 0)
3364 continue;
3365 break;
3366 }
3367 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3368 {
3369 status=MagickFalse;
3370 break;
3371 }
3372 (void) GetNextToken(q,&q,extent,token);
3373 break;
3374 }
3375 if (LocaleCompare("defs",token) == 0)
3376 {
3377 defsDepth++;
3378 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3379 MagickTrue;
3380 break;
3381 }
3382 if (LocaleCompare("gradient",token) == 0)
3383 {
3384 char
3385 key[2*MaxTextExtent],
3386 name[MaxTextExtent],
3387 type[MaxTextExtent];
3388
3389 SegmentInfo
3390 segment;
3391
3392 (void) GetNextToken(q,&q,extent,token);
3393 (void) CopyMagickString(name,token,MaxTextExtent);
3394 (void) GetNextToken(q,&q,extent,token);
3395 (void) CopyMagickString(type,token,MaxTextExtent);
3396 (void) GetNextToken(q,&q,extent,token);
3397 segment.x1=GetDrawValue(token,&next_token);
3398 if (token == next_token)
3399 ThrowPointExpectedException(image,token);
3400 (void) GetNextToken(q,&q,extent,token);
3401 if (*token == ',')
3402 (void) GetNextToken(q,&q,extent,token);
3403 segment.y1=GetDrawValue(token,&next_token);
3404 if (token == next_token)
3405 ThrowPointExpectedException(image,token);
3406 (void) GetNextToken(q,&q,extent,token);
3407 if (*token == ',')
3408 (void) GetNextToken(q,&q,extent,token);
3409 segment.x2=GetDrawValue(token,&next_token);
3410 if (token == next_token)
3411 ThrowPointExpectedException(image,token);
3412 (void) GetNextToken(q,&q,extent,token);
3413 if (*token == ',')
3414 (void) GetNextToken(q,&q,extent,token);
3415 segment.y2=GetDrawValue(token,&next_token);
3416 if (token == next_token)
3417 ThrowPointExpectedException(image,token);
3418 if (LocaleCompare(type,"radial") == 0)
3419 {
3420 (void) GetNextToken(q,&q,extent,token);
3421 if (*token == ',')
3422 (void) GetNextToken(q,&q,extent,token);
3423 }
3424 for (p=q; *q != '\0'; )
3425 {
3426 if (GetNextToken(q,&q,extent,token) < 1)
3427 break;
3428 if (LocaleCompare(token,"pop") != 0)
3429 continue;
3430 (void) GetNextToken(q,(const char **) NULL,extent,token);
3431 if (LocaleCompare(token,"gradient") != 0)
3432 continue;
3433 break;
3434 }
3435 if ((q == (char *) NULL) || (*q == '\0') ||
3436 (p == (char *) NULL) || ((q-4) < p))
3437 {
3438 status=MagickFalse;
3439 break;
3440 }
3441 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3442 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3443 graphic_context[n]->affine.ry*segment.y1+
3444 graphic_context[n]->affine.tx;
3445 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3446 graphic_context[n]->affine.sy*segment.y1+
3447 graphic_context[n]->affine.ty;
3448 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3449 graphic_context[n]->affine.ry*segment.y2+
3450 graphic_context[n]->affine.tx;
3451 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3452 graphic_context[n]->affine.sy*segment.y2+
3453 graphic_context[n]->affine.ty;
3454 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3455 (void) SetImageArtifact(image,key,token);
3456 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3457 (void) SetImageArtifact(image,key,type);
3458 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3459 (void) FormatLocaleString(geometry,MaxTextExtent,
3460 "%gx%g%+.15g%+.15g",
3461 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3462 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3463 bounds.x1,bounds.y1);
3464 (void) SetImageArtifact(image,key,geometry);
3465 (void) GetNextToken(q,&q,extent,token);
3466 break;
3467 }
3468 if (LocaleCompare("graphic-context",token) == 0)
3469 {
3470 n++;
3471 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3472 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3473 if (graphic_context == (DrawInfo **) NULL)
3474 {
3475 (void) ThrowMagickException(&image->exception,
3476 GetMagickModule(),ResourceLimitError,
3477 "MemoryAllocationFailed","`%s'",image->filename);
3478 break;
3479 }
3480 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3481 graphic_context[n-1]);
3482 if (*q == '"')
3483 {
3484 (void) GetNextToken(q,&q,extent,token);
3485 (void) CloneString(&graphic_context[n]->id,token);
3486 }
3487 break;
3488 }
3489 if (LocaleCompare("mask",token) == 0)
3490 {
3491 (void) GetNextToken(q,&q,extent,token);
3492 break;
3493 }
3494 if (LocaleCompare("pattern",token) == 0)
3495 {
3496 RectangleInfo
3497 bounds;
3498
3499 (void) GetNextToken(q,&q,extent,token);
3500 (void) CopyMagickString(name,token,MaxTextExtent);
3501 (void) GetNextToken(q,&q,extent,token);
3502 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3503 &next_token)-0.5));
3504 if (token == next_token)
3505 ThrowPointExpectedException(image,token);
3506 (void) GetNextToken(q,&q,extent,token);
3507 if (*token == ',')
3508 (void) GetNextToken(q,&q,extent,token);
3509 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3510 &next_token)-0.5));
3511 if (token == next_token)
3512 ThrowPointExpectedException(image,token);
3513 (void) GetNextToken(q,&q,extent,token);
3514 if (*token == ',')
3515 (void) GetNextToken(q,&q,extent,token);
3516 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3517 &next_token)+0.5);
3518 if (token == next_token)
3519 ThrowPointExpectedException(image,token);
3520 (void) GetNextToken(q,&q,extent,token);
3521 if (*token == ',')
3522 (void) GetNextToken(q,&q,extent,token);
3523 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3524 &next_token)+0.5);
3525 if (token == next_token)
3526 ThrowPointExpectedException(image,token);
3527 for (p=q; *q != '\0'; )
3528 {
3529 if (GetNextToken(q,&q,extent,token) < 1)
3530 break;
3531 if (LocaleCompare(token,"pop") != 0)
3532 continue;
3533 (void) GetNextToken(q,(const char **) NULL,extent,token);
3534 if (LocaleCompare(token,"pattern") != 0)
3535 continue;
3536 break;
3537 }
3538 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3539 {
3540 status=MagickFalse;
3541 break;
3542 }
3543 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3544 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3545 (void) SetImageArtifact(image,key,token);
3546 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3547 (void) FormatLocaleString(geometry,MaxTextExtent,
3548 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3549 bounds.height,(double) bounds.x,(double) bounds.y);
3550 (void) SetImageArtifact(image,key,geometry);
3551 (void) GetNextToken(q,&q,extent,token);
3552 break;
3553 }
3554 if (LocaleCompare("symbol",token) == 0)
3555 {
3556 symbolDepth++;
3557 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3558 MagickTrue;
3559 break;
3560 }
3561 status=MagickFalse;
3562 break;
3563 }
3564 status=MagickFalse;
3565 break;
3566 }
3567 case 'r':
3568 case 'R':
3569 {
3570 if (LocaleCompare("rectangle",keyword) == 0)
3571 {
3572 primitive_type=RectanglePrimitive;
3573 break;
3574 }
3575 if (LocaleCompare("rotate",keyword) == 0)
3576 {
3577 (void) GetNextToken(q,&q,extent,token);
3578 angle=GetDrawValue(token,&next_token);
3579 if (token == next_token)
3580 ThrowPointExpectedException(image,token);
3581 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3582 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3583 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3584 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3585 break;
3586 }
3587 if (LocaleCompare("roundRectangle",keyword) == 0)
3588 {
3589 primitive_type=RoundRectanglePrimitive;
3590 break;
3591 }
3592 status=MagickFalse;
3593 break;
3594 }
3595 case 's':
3596 case 'S':
3597 {
3598 if (LocaleCompare("scale",keyword) == 0)
3599 {
3600 (void) GetNextToken(q,&q,extent,token);
3601 affine.sx=GetDrawValue(token,&next_token);
3602 if (token == next_token)
3603 ThrowPointExpectedException(image,token);
3604 (void) GetNextToken(q,&q,extent,token);
3605 if (*token == ',')
3606 (void) GetNextToken(q,&q,extent,token);
3607 affine.sy=GetDrawValue(token,&next_token);
3608 if (token == next_token)
3609 ThrowPointExpectedException(image,token);
3610 break;
3611 }
3612 if (LocaleCompare("skewX",keyword) == 0)
3613 {
3614 (void) GetNextToken(q,&q,extent,token);
3615 angle=GetDrawValue(token,&next_token);
3616 if (token == next_token)
3617 ThrowPointExpectedException(image,token);
3618 affine.ry=sin(DegreesToRadians(angle));
3619 break;
3620 }
3621 if (LocaleCompare("skewY",keyword) == 0)
3622 {
3623 (void) GetNextToken(q,&q,extent,token);
3624 angle=GetDrawValue(token,&next_token);
3625 if (token == next_token)
3626 ThrowPointExpectedException(image,token);
3627 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3628 break;
3629 }
3630 if (LocaleCompare("stop-color",keyword) == 0)
3631 {
3632 GradientType
3633 type;
3634
3635 PixelPacket
3636 stop_color;
3637
3638 (void) GetNextToken(q,&q,extent,token);
3639 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3640 type=LinearGradient;
3641 if (draw_info->gradient.type == RadialGradient)
3642 type=RadialGradient;
3643 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3644 start_color=stop_color;
3645 (void) GetNextToken(q,&q,extent,token);
3646 break;
3647 }
3648 if (LocaleCompare("stroke",keyword) == 0)
3649 {
3650 const char
3651 *mvg_class;
3652
3653 (void) GetNextToken(q,&q,extent,token);
3654 if (graphic_context[n]->clip_path != MagickFalse)
3655 break;
3656 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3657 if (mvg_class != (const char *) NULL)
3658 {
3659 (void) DrawPatternPath(image,draw_info,mvg_class,
3660 &graphic_context[n]->stroke_pattern);
3661 break;
3662 }
3663 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3664 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3665 {
3666 (void) DrawPatternPath(image,draw_info,token,
3667 &graphic_context[n]->stroke_pattern);
3668 break;
3669 }
3670 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3671 &image->exception);
3672 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3673 graphic_context[n]->stroke.opacity=ClampToQuantum(
3674 graphic_context[n]->stroke_opacity);
3675 break;
3676 }
3677 if (LocaleCompare("stroke-antialias",keyword) == 0)
3678 {
3679 (void) GetNextToken(q,&q,extent,token);
3680 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3681 MagickTrue : MagickFalse;
3682 break;
3683 }
3684 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3685 {
3686 if (graphic_context[n]->dash_pattern != (double *) NULL)
3687 graphic_context[n]->dash_pattern=(double *)
3688 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3689 if (IsPoint(q) != MagickFalse)
3690 {
3691 const char
3692 *p;
3693
3694 p=q;
3695 (void) GetNextToken(p,&p,extent,token);
3696 if (*token == ',')
3697 (void) GetNextToken(p,&p,extent,token);
3698 for (x=0; IsPoint(token) != MagickFalse; x++)
3699 {
3700 (void) GetNextToken(p,&p,extent,token);
3701 if (*token == ',')
3702 (void) GetNextToken(p,&p,extent,token);
3703 }
3704 graphic_context[n]->dash_pattern=(double *)
3705 AcquireQuantumMemory((size_t) (2*x+2),
3706 sizeof(*graphic_context[n]->dash_pattern));
3707 if (graphic_context[n]->dash_pattern == (double *) NULL)
3708 {
3709 (void) ThrowMagickException(&image->exception,
3710 GetMagickModule(),ResourceLimitError,
3711 "MemoryAllocationFailed","`%s'",image->filename);
3712 status=MagickFalse;
3713 break;
3714 }
3715 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3716 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3717 for (j=0; j < x; j++)
3718 {
3719 (void) GetNextToken(q,&q,extent,token);
3720 if (*token == ',')
3721 (void) GetNextToken(q,&q,extent,token);
3722 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3723 &next_token);
3724 if (token == next_token)
3725 ThrowPointExpectedException(image,token);
3726 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3727 status=MagickFalse;
3728 }
3729 if ((x & 0x01) != 0)
3730 for ( ; j < (2*x); j++)
3731 graphic_context[n]->dash_pattern[j]=
3732 graphic_context[n]->dash_pattern[j-x];
3733 graphic_context[n]->dash_pattern[j]=0.0;
3734 break;
3735 }
3736 (void) GetNextToken(q,&q,extent,token);
3737 break;
3738 }
3739 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3740 {
3741 (void) GetNextToken(q,&q,extent,token);
3742 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3743 if (token == next_token)
3744 ThrowPointExpectedException(image,token);
3745 break;
3746 }
3747 if (LocaleCompare("stroke-linecap",keyword) == 0)
3748 {
3749 ssize_t
3750 linecap;
3751
3752 (void) GetNextToken(q,&q,extent,token);
3753 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3754 if (linecap == -1)
3755 {
3756 status=MagickFalse;
3757 break;
3758 }
3759 graphic_context[n]->linecap=(LineCap) linecap;
3760 break;
3761 }
3762 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3763 {
3764 ssize_t
3765 linejoin;
3766
3767 (void) GetNextToken(q,&q,extent,token);
3768 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3769 token);
3770 if (linejoin == -1)
3771 {
3772 status=MagickFalse;
3773 break;
3774 }
3775 graphic_context[n]->linejoin=(LineJoin) linejoin;
3776 break;
3777 }
3778 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3779 {
3780 (void) GetNextToken(q,&q,extent,token);
3781 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3782 break;
3783 }
3784 if (LocaleCompare("stroke-opacity",keyword) == 0)
3785 {
3786 double
3787 opacity;
3788
3789 (void) GetNextToken(q,&q,extent,token);
3790 if (graphic_context[n]->clip_path != MagickFalse)
3791 break;
3792 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3793 opacity=MagickMin(MagickMax(factor*
3794 GetDrawValue(token,&next_token),0.0),1.0);
3795 if (token == next_token)
3796 ThrowPointExpectedException(image,token);
3797 if (graphic_context[n]->compliance == SVGCompliance)
3798 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3799 else
3800 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3801 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3802 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3803 graphic_context[n]->stroke.opacity=(Quantum)
3804 graphic_context[n]->stroke_opacity;
3805 else
3806 graphic_context[n]->stroke.opacity=ClampToQuantum(
3807 (MagickRealType) QuantumRange*opacity);
3808 break;
3809 }
3810 if (LocaleCompare("stroke-width",keyword) == 0)
3811 {
3812 (void) GetNextToken(q,&q,extent,token);
3813 if (graphic_context[n]->clip_path != MagickFalse)
3814 break;
3815 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3816 if ((token == next_token) ||
3817 (graphic_context[n]->stroke_width < 0.0))
3818 ThrowPointExpectedException(image,token);
3819 break;
3820 }
3821 status=MagickFalse;
3822 break;
3823 }
3824 case 't':
3825 case 'T':
3826 {
3827 if (LocaleCompare("text",keyword) == 0)
3828 {
3829 primitive_type=TextPrimitive;
3830 cursor=0.0;
3831 break;
3832 }
3833 if (LocaleCompare("text-align",keyword) == 0)
3834 {
3835 ssize_t
3836 align;
3837
3838 (void) GetNextToken(q,&q,extent,token);
3839 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3840 if (align == -1)
3841 {
3842 status=MagickFalse;
3843 break;
3844 }
3845 graphic_context[n]->align=(AlignType) align;
3846 break;
3847 }
3848 if (LocaleCompare("text-anchor",keyword) == 0)
3849 {
3850 ssize_t
3851 align;
3852
3853 (void) GetNextToken(q,&q,extent,token);
3854 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3855 if (align == -1)
3856 {
3857 status=MagickFalse;
3858 break;
3859 }
3860 graphic_context[n]->align=(AlignType) align;
3861 break;
3862 }
3863 if (LocaleCompare("text-antialias",keyword) == 0)
3864 {
3865 (void) GetNextToken(q,&q,extent,token);
3866 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3867 MagickTrue : MagickFalse;
3868 break;
3869 }
3870 if (LocaleCompare("text-undercolor",keyword) == 0)
3871 {
3872 (void) GetNextToken(q,&q,extent,token);
3873 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3874 &image->exception);
3875 break;
3876 }
3877 if (LocaleCompare("translate",keyword) == 0)
3878 {
3879 (void) GetNextToken(q,&q,extent,token);
3880 affine.tx=GetDrawValue(token,&next_token);
3881 if (token == next_token)
3882 ThrowPointExpectedException(image,token);
3883 (void) GetNextToken(q,&q,extent,token);
3884 if (*token == ',')
3885 (void) GetNextToken(q,&q,extent,token);
3886 affine.ty=GetDrawValue(token,&next_token);
3887 if (token == next_token)
3888 ThrowPointExpectedException(image,token);
3889 break;
3890 }
3891 status=MagickFalse;
3892 break;
3893 }
3894 case 'u':
3895 case 'U':
3896 {
3897 if (LocaleCompare("use",keyword) == 0)
3898 {
3899 const char
3900 *use;
3901
3902 /*
3903 Get a macro from the MVG document, and "use" it here.
3904 */
3905 (void) GetNextToken(q,&q,extent,token);
3906 use=(const char *) GetValueFromSplayTree(macros,token);
3907 if (use != (const char *) NULL)
3908 {
3909 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3910 (void) CloneString(&clone_info->primitive,use);
3911 status=RenderMVGContent(image,clone_info,depth+1);
3912 clone_info=DestroyDrawInfo(clone_info);
3913 }
3914 break;
3915 }
3916 status=MagickFalse;
3917 break;
3918 }
3919 case 'v':
3920 case 'V':
3921 {
3922 if (LocaleCompare("viewbox",keyword) == 0)
3923 {
3924 (void) GetNextToken(q,&q,extent,token);
3925 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3926 GetDrawValue(token,&next_token)-0.5));
3927 if (token == next_token)
3928 ThrowPointExpectedException(image,token);
3929 (void) GetNextToken(q,&q,extent,token);
3930 if (*token == ',')
3931 (void) GetNextToken(q,&q,extent,token);
3932 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3933 GetDrawValue(token,&next_token)-0.5));
3934 if (token == next_token)
3935 ThrowPointExpectedException(image,token);
3936 (void) GetNextToken(q,&q,extent,token);
3937 if (*token == ',')
3938 (void) GetNextToken(q,&q,extent,token);
3939 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3940 GetDrawValue(token,&next_token)+0.5);
3941 if (token == next_token)
3942 ThrowPointExpectedException(image,token);
3943 (void) GetNextToken(q,&q,extent,token);
3944 if (*token == ',')
3945 (void) GetNextToken(q,&q,extent,token);
3946 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3947 GetDrawValue(token,&next_token)+0.5);
3948 if (token == next_token)
3949 ThrowPointExpectedException(image,token);
3950 break;
3951 }
3952 status=MagickFalse;
3953 break;
3954 }
3955 case 'w':
3956 case 'W':
3957 {
3958 if (LocaleCompare("word-spacing",keyword) == 0)
3959 {
3960 (void) GetNextToken(q,&q,extent,token);
3961 graphic_context[n]->interword_spacing=GetDrawValue(token,
3962 &next_token);
3963 if (token == next_token)
3964 ThrowPointExpectedException(image,token);
3965 break;
3966 }
3967 status=MagickFalse;
3968 break;
3969 }
3970 default:
3971 {
3972 status=MagickFalse;
3973 break;
3974 }
3975 }
3976 if (status == MagickFalse)
3977 break;
3978 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3979 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3980 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3981 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3982 {
3983 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3984 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3985 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3986 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3987 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3988 current.tx;
3989 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3990 current.ty;
3991 }
3992 if (primitive_type == UndefinedPrimitive)
3993 {
3994 if ((draw_info->debug != MagickFalse) && (q > p))
3995 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3996 (q-p-1),p);
3997 continue;
3998 }
3999 /*
4000 Parse the primitive attributes.
4001 */
4002 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4003 if (primitive_info[i].text != (char *) NULL)
4004 primitive_info[i].text=DestroyString(primitive_info[i].text);
4005 i=0;
4006 mvg_info.offset=i;
4007 j=0;
4008 primitive_info[0].point.x=0.0;
4009 primitive_info[0].point.y=0.0;
4010 primitive_info[0].coordinates=0;
4011 primitive_info[0].method=FloodfillMethod;
4012 primitive_info[0].closed_subpath=MagickFalse;
4013 for (x=0; *q != '\0'; x++)
4014 {
4015 /*
4016 Define points.
4017 */
4018 if (IsPoint(q) == MagickFalse)
4019 break;
4020 (void) GetNextToken(q,&q,extent,token);
4021 point.x=GetDrawValue(token,&next_token);
4022 if (token == next_token)
4023 ThrowPointExpectedException(image,token);
4024 (void) GetNextToken(q,&q,extent,token);
4025 if (*token == ',')
4026 (void) GetNextToken(q,&q,extent,token);
4027 point.y=GetDrawValue(token,&next_token);
4028 if (token == next_token)
4029 ThrowPointExpectedException(image,token);
4030 (void) GetNextToken(q,(const char **) NULL,extent,token);
4031 if (*token == ',')
4032 (void) GetNextToken(q,&q,extent,token);
4033 primitive_info[i].primitive=primitive_type;
4034 primitive_info[i].point=point;
4035 primitive_info[i].coordinates=0;
4036 primitive_info[i].method=FloodfillMethod;
4037 primitive_info[i].closed_subpath=MagickFalse;
4038 i++;
4039 mvg_info.offset=i;
4040 if (i < (ssize_t) number_points)
4041 continue;
4042 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4043 primitive_info=(*mvg_info.primitive_info);
4044 }
4045 if (status == MagickFalse)
4046 break;
4047 if (primitive_info[j].text != (char *) NULL)
4048 primitive_info[j].text=DestroyString(primitive_info[j].text);
4049 primitive_info[j].primitive=primitive_type;
4050 primitive_info[j].coordinates=(size_t) x;
4051 primitive_info[j].method=FloodfillMethod;
4052 primitive_info[j].closed_subpath=MagickFalse;
4053 /*
4054 Circumscribe primitive within a circle.
4055 */
4056 bounds.x1=primitive_info[j].point.x;
4057 bounds.y1=primitive_info[j].point.y;
4058 bounds.x2=primitive_info[j].point.x;
4059 bounds.y2=primitive_info[j].point.y;
4060 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4061 {
4062 point=primitive_info[j+k].point;
4063 if (point.x < bounds.x1)
4064 bounds.x1=point.x;
4065 if (point.y < bounds.y1)
4066 bounds.y1=point.y;
4067 if (point.x > bounds.x2)
4068 bounds.x2=point.x;
4069 if (point.y > bounds.y2)
4070 bounds.y2=point.y;
4071 }
4072 /*
4073 Speculate how many points our primitive might consume.
4074 */
4075 coordinates=(double) primitive_info[j].coordinates;
4076 switch (primitive_type)
4077 {
4078 case RectanglePrimitive:
4079 {
4080 coordinates*=5.0;
4081 break;
4082 }
4083 case RoundRectanglePrimitive:
4084 {
4085 double
4086 alpha,
4087 beta,
4088 radius;
4089
4090 alpha=bounds.x2-bounds.x1;
4091 beta=bounds.y2-bounds.y1;
4092 radius=hypot(alpha,beta);
4093 coordinates*=5.0;
4094 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4095 BezierQuantum+360.0;
4096 break;
4097 }
4098 case BezierPrimitive:
4099 {
4100 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4101 break;
4102 }
4103 case PathPrimitive:
4104 {
4105 char
4106 *s,
4107 *t;
4108
4109 (void) GetNextToken(q,&q,extent,token);
4110 coordinates=1.0;
4111 t=token;
4112 for (s=token; *s != '\0'; s=t)
4113 {
4114 double
4115 value;
4116
4117 value=GetDrawValue(s,&t);
4118 (void) value;
4119 if (s == t)
4120 {
4121 t++;
4122 continue;
4123 }
4124 coordinates++;
4125 }
4126 for (s=token; *s != '\0'; s++)
4127 if (strspn(s,"AaCcQqSsTt") != 0)
4128 coordinates+=(20.0*BezierQuantum)+360.0;
4129 break;
4130 }
4131 default:
4132 break;
4133 }
4134 if (status == MagickFalse)
4135 break;
4136 if (((size_t) (i+coordinates)) >= number_points)
4137 {
4138 /*
4139 Resize based on speculative points required by primitive.
4140 */
4141 number_points+=coordinates+1;
4142 if (number_points < (size_t) coordinates)
4143 {
4144 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4145 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4146 image->filename);
4147 break;
4148 }
4149 mvg_info.offset=i;
4150 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4151 primitive_info=(*mvg_info.primitive_info);
4152 }
4153 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4154 primitive_info=(*mvg_info.primitive_info);
4155 if (status == MagickFalse)
4156 break;
4157 mvg_info.offset=j;
4158 switch (primitive_type)
4159 {
4160 case PointPrimitive:
4161 default:
4162 {
4163 if (primitive_info[j].coordinates != 1)
4164 {
4165 status=MagickFalse;
4166 break;
4167 }
4168 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4169 primitive_info=(*mvg_info.primitive_info);
4170 i=(ssize_t) (j+primitive_info[j].coordinates);
4171 break;
4172 }
4173 case LinePrimitive:
4174 {
4175 if (primitive_info[j].coordinates != 2)
4176 {
4177 status=MagickFalse;
4178 break;
4179 }
4180 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4181 primitive_info[j+1].point);
4182 primitive_info=(*mvg_info.primitive_info);
4183 i=(ssize_t) (j+primitive_info[j].coordinates);
4184 break;
4185 }
4186 case RectanglePrimitive:
4187 {
4188 if (primitive_info[j].coordinates != 2)
4189 {
4190 status=MagickFalse;
4191 break;
4192 }
4193 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4194 primitive_info[j+1].point);
4195 primitive_info=(*mvg_info.primitive_info);
4196 i=(ssize_t) (j+primitive_info[j].coordinates);
4197 break;
4198 }
4199 case RoundRectanglePrimitive:
4200 {
4201 if (primitive_info[j].coordinates != 3)
4202 {
4203 status=MagickFalse;
4204 break;
4205 }
4206 if ((primitive_info[j+2].point.x < 0.0) ||
4207 (primitive_info[j+2].point.y < 0.0))
4208 {
4209 status=MagickFalse;
4210 break;
4211 }
4212 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4213 {
4214 status=MagickFalse;
4215 break;
4216 }
4217 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4218 {
4219 status=MagickFalse;
4220 break;
4221 }
4222 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4223 primitive_info[j+1].point,primitive_info[j+2].point);
4224 primitive_info=(*mvg_info.primitive_info);
4225 i=(ssize_t) (j+primitive_info[j].coordinates);
4226 break;
4227 }
4228 case ArcPrimitive:
4229 {
4230 if (primitive_info[j].coordinates != 3)
4231 {
4232 status=MagickFalse;
4233 break;
4234 }
4235 status&=TraceArc(&mvg_info,primitive_info[j].point,
4236 primitive_info[j+1].point,primitive_info[j+2].point);
4237 primitive_info=(*mvg_info.primitive_info);
4238 i=(ssize_t) (j+primitive_info[j].coordinates);
4239 break;
4240 }
4241 case EllipsePrimitive:
4242 {
4243 if (primitive_info[j].coordinates != 3)
4244 {
4245 status=MagickFalse;
4246 break;
4247 }
4248 if ((primitive_info[j+1].point.x < 0.0) ||
4249 (primitive_info[j+1].point.y < 0.0))
4250 {
4251 status=MagickFalse;
4252 break;
4253 }
4254 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4255 primitive_info[j+1].point,primitive_info[j+2].point);
4256 primitive_info=(*mvg_info.primitive_info);
4257 i=(ssize_t) (j+primitive_info[j].coordinates);
4258 break;
4259 }
4260 case CirclePrimitive:
4261 {
4262 if (primitive_info[j].coordinates != 2)
4263 {
4264 status=MagickFalse;
4265 break;
4266 }
4267 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4268 primitive_info[j+1].point);
4269 primitive_info=(*mvg_info.primitive_info);
4270 i=(ssize_t) (j+primitive_info[j].coordinates);
4271 break;
4272 }
4273 case PolylinePrimitive:
4274 {
4275 if (primitive_info[j].coordinates < 1)
4276 {
4277 status=MagickFalse;
4278 break;
4279 }
4280 break;
4281 }
4282 case PolygonPrimitive:
4283 {
4284 if (primitive_info[j].coordinates < 3)
4285 {
4286 status=MagickFalse;
4287 break;
4288 }
4289 primitive_info[i]=primitive_info[j];
4290 primitive_info[i].coordinates=0;
4291 primitive_info[j].coordinates++;
4292 primitive_info[j].closed_subpath=MagickTrue;
4293 i++;
4294 break;
4295 }
4296 case BezierPrimitive:
4297 {
4298 if (primitive_info[j].coordinates < 3)
4299 {
4300 status=MagickFalse;
4301 break;
4302 }
4303 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4304 primitive_info=(*mvg_info.primitive_info);
4305 i=(ssize_t) (j+primitive_info[j].coordinates);
4306 break;
4307 }
4308 case PathPrimitive:
4309 {
4310 coordinates=(double) TracePath(image,&mvg_info,token);
4311 primitive_info=(*mvg_info.primitive_info);
4312 if (coordinates < 0.0)
4313 {
4314 status=MagickFalse;
4315 break;
4316 }
4317 i=(ssize_t) (j+coordinates);
4318 break;
4319 }
4320 case ColorPrimitive:
4321 case MattePrimitive:
4322 {
4323 ssize_t
4324 method;
4325
4326 if (primitive_info[j].coordinates != 1)
4327 {
4328 status=MagickFalse;
4329 break;
4330 }
4331 (void) GetNextToken(q,&q,extent,token);
4332 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4333 if (method == -1)
4334 {
4335 status=MagickFalse;
4336 break;
4337 }
4338 primitive_info[j].method=(PaintMethod) method;
4339 break;
4340 }
4341 case TextPrimitive:
4342 {
4343 char
4344 geometry[MagickPathExtent];
4345
4346 if (primitive_info[j].coordinates != 1)
4347 {
4348 status=MagickFalse;
4349 break;
4350 }
4351 if (*token != ',')
4352 (void) GetNextToken(q,&q,extent,token);
4353 (void) CloneString(&primitive_info[j].text,token);
4354 /*
4355 Compute text cursor offset.
4356 */
4357 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4358 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4359 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4360 {
4361 mvg_info.point=primitive_info->point;
4362 primitive_info->point.x+=cursor;
4363 }
4364 else
4365 {
4366 mvg_info.point=primitive_info->point;
4367 cursor=0.0;
4368 }
4369 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4370 primitive_info->point.x,primitive_info->point.y);
4371 clone_info->render=MagickFalse;
4372 clone_info->text=AcquireString(token);
4373 status&=GetTypeMetrics(image,clone_info,&metrics);
4374 clone_info=DestroyDrawInfo(clone_info);
4375 cursor+=metrics.width;
4376 if (graphic_context[n]->compliance != SVGCompliance)
4377 cursor=0.0;
4378 break;
4379 }
4380 case ImagePrimitive:
4381 {
4382 if (primitive_info[j].coordinates != 2)
4383 {
4384 status=MagickFalse;
4385 break;
4386 }
4387 (void) GetNextToken(q,&q,extent,token);
4388 (void) CloneString(&primitive_info[j].text,token);
4389 break;
4390 }
4391 }
4392 mvg_info.offset=i;
4393 if (status == 0)
4394 break;
4395 primitive_info[i].primitive=UndefinedPrimitive;
4396 if ((draw_info->debug != MagickFalse) && (q > p))
4397 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4398 /*
4399 Sanity check.
4400 */
4401 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4402 &graphic_context[n]->affine));
4403 primitive_info=(*mvg_info.primitive_info);
4404 if (status == 0)
4405 break;
4406 status&=CheckPrimitiveExtent(&mvg_info,(double)
4407 graphic_context[n]->stroke_width);
4408 primitive_info=(*mvg_info.primitive_info);
4409 if (status == 0)
4410 break;
4411 if (i == 0)
4412 continue;
4413 /*
4414 Transform points.
4415 */
4416 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4417 {
4418 point=primitive_info[i].point;
4419 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4420 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4421 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4422 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4423 point=primitive_info[i].point;
4424 if (point.x < graphic_context[n]->bounds.x1)
4425 graphic_context[n]->bounds.x1=point.x;
4426 if (point.y < graphic_context[n]->bounds.y1)
4427 graphic_context[n]->bounds.y1=point.y;
4428 if (point.x > graphic_context[n]->bounds.x2)
4429 graphic_context[n]->bounds.x2=point.x;
4430 if (point.y > graphic_context[n]->bounds.y2)
4431 graphic_context[n]->bounds.y2=point.y;
4432 if (primitive_info[i].primitive == ImagePrimitive)
4433 break;
4434 if (i >= (ssize_t) number_points)
4435 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4436 }
4437 if (graphic_context[n]->render != MagickFalse)
4438 {
4439 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4440 (graphic_context[n]->clip_mask != (char *) NULL) &&
4441 (LocaleCompare(graphic_context[n]->clip_mask,
4442 graphic_context[n-1]->clip_mask) != 0))
4443 {
4444 const char
4445 *clip_path;
4446
4447 clip_path=(const char *) GetValueFromSplayTree(macros,
4448 graphic_context[n]->clip_mask);
4449 if (clip_path != (const char *) NULL)
4450 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4451 clip_path);
4452 status&=DrawClipPath(image,graphic_context[n],
4453 graphic_context[n]->clip_mask);
4454 }
4455 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4456 }
4457 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4458 primitive_extent);
4459 if (proceed == MagickFalse)
4460 break;
4461 if (status == 0)
4462 break;
4463 }
4464 if (draw_info->debug != MagickFalse)
4465 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4466 /*
4467 Relinquish resources.
4468 */
4469 macros=DestroySplayTree(macros);
4470 token=DestroyString(token);
4471 if (primitive_info != (PrimitiveInfo *) NULL)
4472 {
4473 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4474 if (primitive_info[i].text != (char *) NULL)
4475 primitive_info[i].text=DestroyString(primitive_info[i].text);
4476 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4477 }
4478 primitive=DestroyString(primitive);
4479 for ( ; n >= 0; n--)
4480 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4481 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4482 if (status == MagickFalse)
4483 ThrowBinaryImageException(DrawError,
4484 "NonconformingDrawingPrimitiveDefinition",keyword);
4485 return(status != 0 ? MagickTrue : MagickFalse);
4486}
4487
4488MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4489{
4490 return(RenderMVGContent(image,draw_info,0));
4491}
4492␌
4493/*
4494%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4495% %
4496% %
4497% %
4498% D r a w P a t t e r n P a t h %
4499% %
4500% %
4501% %
4502%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4503%
4504% DrawPatternPath() draws a pattern.
4505%
4506% The format of the DrawPatternPath method is:
4507%
4508% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4509% const char *name,Image **pattern)
4510%
4511% A description of each parameter follows:
4512%
4513% o image: the image.
4514%
4515% o draw_info: the draw info.
4516%
4517% o name: the pattern name.
4518%
4519% o image: the image.
4520%
4521*/
4522MagickExport MagickBooleanType DrawPatternPath(Image *image,
4523 const DrawInfo *draw_info,const char *name,Image **pattern)
4524{
4525 char
4526 property[MaxTextExtent];
4527
4528 const char
4529 *geometry,
4530 *path,
4531 *type;
4532
4533 DrawInfo
4534 *clone_info;
4535
4536 ImageInfo
4537 *image_info;
4538
4539 MagickBooleanType
4540 status;
4541
4542 assert(image != (Image *) NULL);
4543 assert(image->signature == MagickCoreSignature);
4544 assert(draw_info != (const DrawInfo *) NULL);
4545 if (IsEventLogging() != MagickFalse)
4546 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4547 assert(name != (const char *) NULL);
4548 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4549 path=GetImageArtifact(image,property);
4550 if (path == (const char *) NULL)
4551 return(MagickFalse);
4552 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4553 geometry=GetImageArtifact(image,property);
4554 if (geometry == (const char *) NULL)
4555 return(MagickFalse);
4556 if ((*pattern) != (Image *) NULL)
4557 *pattern=DestroyImage(*pattern);
4558 image_info=AcquireImageInfo();
4559 image_info->size=AcquireString(geometry);
4560 *pattern=AcquireImage(image_info);
4561 image_info=DestroyImageInfo(image_info);
4562 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4563 &image->exception);
4564 (void) SetImageBackgroundColor(*pattern);
4565 if (draw_info->debug != MagickFalse)
4566 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4567 "begin pattern-path %s %s",name,geometry);
4568 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4569 if (clone_info->fill_pattern != (Image *) NULL)
4570 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4571 if (clone_info->stroke_pattern != (Image *) NULL)
4572 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4573 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4574 type=GetImageArtifact(image,property);
4575 if (type != (const char *) NULL)
4576 clone_info->gradient.type=(GradientType) ParseCommandOption(
4577 MagickGradientOptions,MagickFalse,type);
4578 (void) CloneString(&clone_info->primitive,path);
4579 status=RenderMVGContent(*pattern,clone_info,0);
4580 clone_info=DestroyDrawInfo(clone_info);
4581 if (draw_info->debug != MagickFalse)
4582 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4583 return(status);
4584}
4585␌
4586/*
4587%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4588% %
4589% %
4590% %
4591+ D r a w P o l y g o n P r i m i t i v e %
4592% %
4593% %
4594% %
4595%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4596%
4597% DrawPolygonPrimitive() draws a polygon on the image.
4598%
4599% The format of the DrawPolygonPrimitive method is:
4600%
4601% MagickBooleanType DrawPolygonPrimitive(Image *image,
4602% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4603%
4604% A description of each parameter follows:
4605%
4606% o image: the image.
4607%
4608% o draw_info: the draw info.
4609%
4610% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4611%
4612*/
4613
4614static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4615{
4616 ssize_t
4617 i;
4618
4619 assert(polygon_info != (PolygonInfo **) NULL);
4620 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4621 if (polygon_info[i] != (PolygonInfo *) NULL)
4622 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4623 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4624 return(polygon_info);
4625}
4626
4627static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4628 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4629{
4630 PathInfo
4631 *magick_restrict path_info;
4632
4633 PolygonInfo
4634 **polygon_info;
4635
4636 size_t
4637 number_threads;
4638
4639 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4640 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4641 sizeof(*polygon_info));
4642 if (polygon_info == (PolygonInfo **) NULL)
4643 {
4644 (void) ThrowMagickException(exception,GetMagickModule(),
4645 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4646 return((PolygonInfo **) NULL);
4647 }
4648 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4649 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4650 if (path_info == (PathInfo *) NULL)
4651 return(DestroyPolygonTLS(polygon_info));
4652 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4653 if (polygon_info[0] == (PolygonInfo *) NULL)
4654 {
4655 (void) ThrowMagickException(exception,GetMagickModule(),
4656 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4657 return(DestroyPolygonTLS(polygon_info));
4658 }
4659 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4660 return(polygon_info);
4661}
4662
4663static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4664 const size_t number_threads,ExceptionInfo *exception)
4665{
4666 ssize_t
4667 i;
4668
4669 for (i=1; i < (ssize_t) number_threads; i++)
4670 {
4671 EdgeInfo
4672 *edge_info;
4673
4674 ssize_t
4675 j;
4676
4677 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4678 sizeof(*polygon_info[i]));
4679 if (polygon_info[i] == (PolygonInfo *) NULL)
4680 {
4681 (void) ThrowMagickException(exception,GetMagickModule(),
4682 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4683 return(MagickFalse);
4684 }
4685 polygon_info[i]->number_edges=0;
4686 edge_info=polygon_info[0]->edges;
4687 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4688 polygon_info[0]->number_edges,sizeof(*edge_info));
4689 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4690 {
4691 (void) ThrowMagickException(exception,GetMagickModule(),
4692 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4693 return(MagickFalse);
4694 }
4695 (void) memcpy(polygon_info[i]->edges,edge_info,
4696 polygon_info[0]->number_edges*sizeof(*edge_info));
4697 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4698 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4699 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4700 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4701 {
4702 edge_info=polygon_info[0]->edges+j;
4703 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4704 edge_info->number_points,sizeof(*edge_info));
4705 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4706 {
4707 (void) ThrowMagickException(exception,GetMagickModule(),
4708 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4709 return(MagickFalse);
4710 }
4711 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4712 edge_info->number_points*sizeof(*edge_info->points));
4713 }
4714 }
4715 return(MagickTrue);
4716}
4717
4718static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4719{
4720 assert(edge < (ssize_t) polygon_info->number_edges);
4721 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4722 polygon_info->edges[edge].points);
4723 polygon_info->number_edges--;
4724 if (edge < (ssize_t) polygon_info->number_edges)
4725 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4726 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4727 return(polygon_info->number_edges);
4728}
4729
4730static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4731 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4732 const ssize_t y,double *stroke_opacity)
4733{
4734 double
4735 alpha,
4736 beta,
4737 distance,
4738 subpath_opacity;
4739
4740 PointInfo
4741 delta;
4742
4743 EdgeInfo
4744 *p;
4745
4746 const PointInfo
4747 *q;
4748
4749 ssize_t
4750 i;
4751
4752 ssize_t
4753 j,
4754 winding_number;
4755
4756 /*
4757 Compute fill & stroke opacity for this (x,y) point.
4758 */
4759 *stroke_opacity=0.0;
4760 subpath_opacity=0.0;
4761 p=polygon_info->edges;
4762 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4763 {
4764 if ((double) y <= (p->bounds.y1-mid-0.5))
4765 break;
4766 if ((double) y > (p->bounds.y2+mid+0.5))
4767 {
4768 p--;
4769 (void) DestroyEdge(polygon_info,j--);
4770 continue;
4771 }
4772 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4773 ((double) x > (p->bounds.x2+mid+0.5)))
4774 continue;
4775 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4776 for ( ; i < (ssize_t) p->number_points; i++)
4777 {
4778 if ((double) y <= (p->points[i-1].y-mid-0.5))
4779 break;
4780 if ((double) y > (p->points[i].y+mid+0.5))
4781 continue;
4782 if (p->scanline != (double) y)
4783 {
4784 p->scanline=(double) y;
4785 p->highwater=(size_t) i;
4786 }
4787 /*
4788 Compute distance between a point and an edge.
4789 */
4790 q=p->points+i-1;
4791 delta.x=(q+1)->x-q->x;
4792 delta.y=(q+1)->y-q->y;
4793 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4794 if (beta <= 0.0)
4795 {
4796 delta.x=(double) x-q->x;
4797 delta.y=(double) y-q->y;
4798 distance=delta.x*delta.x+delta.y*delta.y;
4799 }
4800 else
4801 {
4802 alpha=delta.x*delta.x+delta.y*delta.y;
4803 if (beta >= alpha)
4804 {
4805 delta.x=(double) x-(q+1)->x;
4806 delta.y=(double) y-(q+1)->y;
4807 distance=delta.x*delta.x+delta.y*delta.y;
4808 }
4809 else
4810 {
4811 alpha=MagickSafeReciprocal(alpha);
4812 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4813 distance=alpha*beta*beta;
4814 }
4815 }
4816 /*
4817 Compute stroke & subpath opacity.
4818 */
4819 beta=0.0;
4820 if (p->ghostline == MagickFalse)
4821 {
4822 alpha=mid+0.5;
4823 if ((*stroke_opacity < 1.0) &&
4824 (distance <= ((alpha+0.25)*(alpha+0.25))))
4825 {
4826 alpha=mid-0.5;
4827 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4828 *stroke_opacity=1.0;
4829 else
4830 {
4831 beta=1.0;
4832 if (fabs(distance-1.0) >= MagickEpsilon)
4833 beta=sqrt((double) distance);
4834 alpha=beta-mid-0.5;
4835 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4836 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4837 }
4838 }
4839 }
4840 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4841 continue;
4842 if (distance <= 0.0)
4843 {
4844 subpath_opacity=1.0;
4845 continue;
4846 }
4847 if (distance > 1.0)
4848 continue;
4849 if (fabs(beta) < MagickEpsilon)
4850 {
4851 beta=1.0;
4852 if (fabs(distance-1.0) >= MagickEpsilon)
4853 beta=sqrt(distance);
4854 }
4855 alpha=beta-1.0;
4856 if (subpath_opacity < (alpha*alpha))
4857 subpath_opacity=alpha*alpha;
4858 }
4859 }
4860 /*
4861 Compute fill opacity.
4862 */
4863 if (fill == MagickFalse)
4864 return(0.0);
4865 if (subpath_opacity >= 1.0)
4866 return(1.0);
4867 /*
4868 Determine winding number.
4869 */
4870 winding_number=0;
4871 p=polygon_info->edges;
4872 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4873 {
4874 if ((double) y <= p->bounds.y1)
4875 break;
4876 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4877 continue;
4878 if ((double) x > p->bounds.x2)
4879 {
4880 winding_number+=p->direction != 0 ? 1 : -1;
4881 continue;
4882 }
4883 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4884 for ( ; i < (ssize_t) (p->number_points-1); i++)
4885 if ((double) y <= p->points[i].y)
4886 break;
4887 q=p->points+i-1;
4888 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4889 winding_number+=p->direction != 0 ? 1 : -1;
4890 }
4891 if (fill_rule != NonZeroRule)
4892 {
4893 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4894 return(1.0);
4895 }
4896 else
4897 if (MagickAbsoluteValue(winding_number) != 0)
4898 return(1.0);
4899 return(subpath_opacity);
4900}
4901
4902static MagickBooleanType DrawPolygonPrimitive(Image *image,
4903 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4904{
4905 typedef struct _ExtentInfo
4906 {
4907 ssize_t
4908 x1,
4909 y1,
4910 x2,
4911 y2;
4912 } ExtentInfo;
4913
4914 CacheView
4915 *image_view;
4916
4917 const char
4918 *artifact;
4919
4920 double
4921 mid;
4922
4923 ExceptionInfo
4924 *exception;
4925
4926 ExtentInfo
4927 poly_extent;
4928
4929 MagickBooleanType
4930 fill,
4931 status;
4932
4933 PolygonInfo
4934 **magick_restrict polygon_info;
4935
4936 EdgeInfo
4937 *p;
4938
4939 SegmentInfo
4940 bounds;
4941
4942 size_t
4943 number_threads = 1;
4944
4945 ssize_t
4946 i,
4947 y;
4948
4949 assert(image != (Image *) NULL);
4950 assert(image->signature == MagickCoreSignature);
4951 assert(draw_info != (DrawInfo *) NULL);
4952 assert(draw_info->signature == MagickCoreSignature);
4953 assert(primitive_info != (PrimitiveInfo *) NULL);
4954 if (IsEventLogging() != MagickFalse)
4955 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4956 if (primitive_info->coordinates <= 1)
4957 return(MagickTrue);
4958 /*
4959 Compute bounding box.
4960 */
4961 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4962 if (polygon_info == (PolygonInfo **) NULL)
4963 return(MagickFalse);
4964 if (draw_info->debug != MagickFalse)
4965 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4966 fill=(primitive_info->method == FillToBorderMethod) ||
4967 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4968 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4969 bounds=polygon_info[0]->edges[0].bounds;
4970 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4971 if (IsStringTrue(artifact) != MagickFalse)
4972 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4973 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4974 {
4975 p=polygon_info[0]->edges+i;
4976 if (p->bounds.x1 < bounds.x1)
4977 bounds.x1=p->bounds.x1;
4978 if (p->bounds.y1 < bounds.y1)
4979 bounds.y1=p->bounds.y1;
4980 if (p->bounds.x2 > bounds.x2)
4981 bounds.x2=p->bounds.x2;
4982 if (p->bounds.y2 > bounds.y2)
4983 bounds.y2=p->bounds.y2;
4984 }
4985 bounds.x1-=(mid+1.0);
4986 bounds.y1-=(mid+1.0);
4987 bounds.x2+=(mid+1.0);
4988 bounds.y2+=(mid+1.0);
4989 if ((bounds.x1 >= (double) image->columns) ||
4990 (bounds.y1 >= (double) image->rows) ||
4991 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4992 {
4993 polygon_info=DestroyPolygonTLS(polygon_info);
4994 return(MagickTrue); /* virtual polygon */
4995 }
4996 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4997 (double) image->columns-1.0 : bounds.x1;
4998 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4999 (double) image->rows-1.0 : bounds.y1;
5000 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5001 (double) image->columns-1.0 : bounds.x2;
5002 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5003 (double) image->rows-1.0 : bounds.y2;
5004 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5005 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5006 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5007 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5008 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5009 poly_extent.y1+1,1);
5010 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5011 if (status == MagickFalse)
5012 {
5013 polygon_info=DestroyPolygonTLS(polygon_info);
5014 return(status);
5015 }
5016 status=MagickTrue;
5017 exception=(&image->exception);
5018 image_view=AcquireAuthenticCacheView(image,exception);
5019 if ((primitive_info->coordinates == 1) ||
5020 (polygon_info[0]->number_edges == 0))
5021 {
5022 /*
5023 Draw point.
5024 */
5025#if defined(MAGICKCORE_OPENMP_SUPPORT)
5026 #pragma omp parallel for schedule(static) shared(status) \
5027 num_threads(number_threads)
5028#endif
5029 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5030 {
5031 MagickBooleanType
5032 sync;
5033
5034 PixelPacket
5035 *magick_restrict q;
5036
5037 ssize_t
5038 x;
5039
5040 if (status == MagickFalse)
5041 continue;
5042 x=poly_extent.x1;
5043 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5044 x+1),1,exception);
5045 if (q == (PixelPacket *) NULL)
5046 {
5047 status=MagickFalse;
5048 continue;
5049 }
5050 for ( ; x <= poly_extent.x2; x++)
5051 {
5052 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5053 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5054 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5055 q++;
5056 }
5057 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5058 if (sync == MagickFalse)
5059 status=MagickFalse;
5060 }
5061 image_view=DestroyCacheView(image_view);
5062 polygon_info=DestroyPolygonTLS(polygon_info);
5063 if (draw_info->debug != MagickFalse)
5064 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5065 " end draw-polygon");
5066 return(status);
5067 }
5068 /*
5069 Draw polygon or line.
5070 */
5071 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5072 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5073#if defined(MAGICKCORE_OPENMP_SUPPORT)
5074 #pragma omp parallel for schedule(static) shared(status) \
5075 num_threads(number_threads)
5076#endif
5077 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5078 {
5079 const int
5080 id = GetOpenMPThreadId();
5081
5082 PixelPacket
5083 fill_color,
5084 stroke_color;
5085
5086 PixelPacket
5087 *magick_restrict q;
5088
5089 ssize_t
5090 x;
5091
5092 if (status == MagickFalse)
5093 continue;
5094 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5095 (poly_extent.x2-poly_extent.x1+1),1,exception);
5096 if (q == (PixelPacket *) NULL)
5097 {
5098 status=MagickFalse;
5099 continue;
5100 }
5101 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5102 {
5103 double
5104 fill_opacity,
5105 stroke_opacity;
5106
5107 /*
5108 Fill and/or stroke.
5109 */
5110 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5111 draw_info->fill_rule,x,y,&stroke_opacity);
5112 if (draw_info->stroke_antialias == MagickFalse)
5113 {
5114 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5115 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5116 }
5117 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5118 &fill_color);
5119 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5120 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5121 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5122 (MagickRealType) q->opacity,q);
5123 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5124 &stroke_color);
5125 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5126 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5127 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5128 (MagickRealType) q->opacity,q);
5129 q++;
5130 }
5131 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5132 status=MagickFalse;
5133 }
5134 image_view=DestroyCacheView(image_view);
5135 polygon_info=DestroyPolygonTLS(polygon_info);
5136 if (draw_info->debug != MagickFalse)
5137 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5138 return(status);
5139}
5140␌
5141/*
5142%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5143% %
5144% %
5145% %
5146% D r a w P r i m i t i v e %
5147% %
5148% %
5149% %
5150%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5151%
5152% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5153%
5154% The format of the DrawPrimitive method is:
5155%
5156% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5157% PrimitiveInfo *primitive_info)
5158%
5159% A description of each parameter follows:
5160%
5161% o image: the image.
5162%
5163% o draw_info: the draw info.
5164%
5165% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5166%
5167*/
5168static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5169{
5170 const char
5171 *methods[] =
5172 {
5173 "point",
5174 "replace",
5175 "floodfill",
5176 "filltoborder",
5177 "reset",
5178 "?"
5179 };
5180
5181 PointInfo
5182 p,
5183 q,
5184 point;
5185
5186 ssize_t
5187 i,
5188 x;
5189
5190 ssize_t
5191 coordinates,
5192 y;
5193
5194 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5195 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5196 switch (primitive_info->primitive)
5197 {
5198 case PointPrimitive:
5199 {
5200 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5201 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5202 methods[primitive_info->method]);
5203 return;
5204 }
5205 case ColorPrimitive:
5206 {
5207 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5208 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5209 methods[primitive_info->method]);
5210 return;
5211 }
5212 case MattePrimitive:
5213 {
5214 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5215 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5216 methods[primitive_info->method]);
5217 return;
5218 }
5219 case TextPrimitive:
5220 {
5221 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5222 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5223 return;
5224 }
5225 case ImagePrimitive:
5226 {
5227 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5228 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5229 return;
5230 }
5231 default:
5232 break;
5233 }
5234 coordinates=0;
5235 p=primitive_info[0].point;
5236 q.x=(-1.0);
5237 q.y=(-1.0);
5238 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5239 {
5240 point=primitive_info[i].point;
5241 if (coordinates <= 0)
5242 {
5243 coordinates=(ssize_t) primitive_info[i].coordinates;
5244 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5245 " begin open (%.20g)",(double) coordinates);
5246 p=point;
5247 }
5248 point=primitive_info[i].point;
5249 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5250 (fabs(q.y-point.y) >= MagickEpsilon))
5251 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5252 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5253 else
5254 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5255 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5256 q=point;
5257 coordinates--;
5258 if (coordinates > 0)
5259 continue;
5260 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5261 (fabs(p.y-point.y) >= MagickEpsilon))
5262 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5263 (double) coordinates);
5264 else
5265 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5266 (double) coordinates);
5267 }
5268}
5269
5270MagickExport MagickBooleanType DrawPrimitive(Image *image,
5271 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5272{
5273 CacheView
5274 *image_view;
5275
5276 ExceptionInfo
5277 *exception;
5278
5279 MagickStatusType
5280 status;
5281
5282 ssize_t
5283 i,
5284 x;
5285
5286 ssize_t
5287 y;
5288
5289 if (draw_info->debug != MagickFalse)
5290 {
5291 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5292 " begin draw-primitive");
5293 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5294 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5295 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5296 draw_info->affine.tx,draw_info->affine.ty);
5297 }
5298 exception=(&image->exception);
5299 status=MagickTrue;
5300 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5301 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5302 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5303 status=SetImageColorspace(image,sRGBColorspace);
5304 if (draw_info->compliance == SVGCompliance)
5305 {
5306 status&=SetImageClipMask(image,draw_info->clipping_mask);
5307 status&=SetImageMask(image,draw_info->composite_mask);
5308 }
5309 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5310 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5311 image_view=AcquireAuthenticCacheView(image,exception);
5312 switch (primitive_info->primitive)
5313 {
5314 case ColorPrimitive:
5315 {
5316 switch (primitive_info->method)
5317 {
5318 case PointMethod:
5319 default:
5320 {
5321 PixelPacket
5322 *q;
5323
5324 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5325 if (q == (PixelPacket *) NULL)
5326 break;
5327 (void) GetFillColor(draw_info,x,y,q);
5328 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5329 break;
5330 }
5331 case ReplaceMethod:
5332 {
5333 PixelPacket
5334 target;
5335
5336 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5337 for (y=0; y < (ssize_t) image->rows; y++)
5338 {
5339 PixelPacket
5340 *magick_restrict q;
5341
5342 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5343 exception);
5344 if (q == (PixelPacket *) NULL)
5345 break;
5346 for (x=0; x < (ssize_t) image->columns; x++)
5347 {
5348 if (IsColorSimilar(image,q,&target) == MagickFalse)
5349 {
5350 q++;
5351 continue;
5352 }
5353 (void) GetFillColor(draw_info,x,y,q);
5354 q++;
5355 }
5356 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5357 if (status == MagickFalse)
5358 break;
5359 }
5360 break;
5361 }
5362 case FloodfillMethod:
5363 case FillToBorderMethod:
5364 {
5365 MagickPixelPacket
5366 target;
5367
5368 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5369 if (primitive_info->method == FillToBorderMethod)
5370 {
5371 target.red=(MagickRealType) draw_info->border_color.red;
5372 target.green=(MagickRealType) draw_info->border_color.green;
5373 target.blue=(MagickRealType) draw_info->border_color.blue;
5374 }
5375 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5376 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5377 MagickTrue);
5378 break;
5379 }
5380 case ResetMethod:
5381 {
5382 for (y=0; y < (ssize_t) image->rows; y++)
5383 {
5384 PixelPacket
5385 *magick_restrict q;
5386
5387 ssize_t
5388 x;
5389
5390 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5391 exception);
5392 if (q == (PixelPacket *) NULL)
5393 break;
5394 for (x=0; x < (ssize_t) image->columns; x++)
5395 {
5396 (void) GetFillColor(draw_info,x,y,q);
5397 q++;
5398 }
5399 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5400 if (status == MagickFalse)
5401 break;
5402 }
5403 break;
5404 }
5405 }
5406 break;
5407 }
5408 case MattePrimitive:
5409 {
5410 if (image->matte == MagickFalse)
5411 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5412 switch (primitive_info->method)
5413 {
5414 case PointMethod:
5415 default:
5416 {
5417 PixelPacket
5418 pixel;
5419
5420 PixelPacket
5421 *q;
5422
5423 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5424 if (q == (PixelPacket *) NULL)
5425 break;
5426 (void) GetFillColor(draw_info,x,y,&pixel);
5427 SetPixelOpacity(q,pixel.opacity);
5428 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5429 break;
5430 }
5431 case ReplaceMethod:
5432 {
5433 PixelPacket
5434 pixel,
5435 target;
5436
5437 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5438 for (y=0; y < (ssize_t) image->rows; y++)
5439 {
5440 PixelPacket
5441 *magick_restrict q;
5442
5443 ssize_t
5444 x;
5445
5446 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5447 exception);
5448 if (q == (PixelPacket *) NULL)
5449 break;
5450 for (x=0; x < (ssize_t) image->columns; x++)
5451 {
5452 if (IsColorSimilar(image,q,&target) == MagickFalse)
5453 {
5454 q++;
5455 continue;
5456 }
5457 (void) GetFillColor(draw_info,x,y,&pixel);
5458 SetPixelOpacity(q,pixel.opacity);
5459 q++;
5460 }
5461 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5462 if (status == MagickFalse)
5463 break;
5464 }
5465 break;
5466 }
5467 case FloodfillMethod:
5468 case FillToBorderMethod:
5469 {
5470 MagickPixelPacket
5471 target;
5472
5473 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5474 if (primitive_info->method == FillToBorderMethod)
5475 {
5476 target.red=(MagickRealType) draw_info->border_color.red;
5477 target.green=(MagickRealType) draw_info->border_color.green;
5478 target.blue=(MagickRealType) draw_info->border_color.blue;
5479 }
5480 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5481 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5482 MagickTrue);
5483 break;
5484 }
5485 case ResetMethod:
5486 {
5487 PixelPacket
5488 pixel;
5489
5490 for (y=0; y < (ssize_t) image->rows; y++)
5491 {
5492 PixelPacket
5493 *magick_restrict q;
5494
5495 ssize_t
5496 x;
5497
5498 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5499 exception);
5500 if (q == (PixelPacket *) NULL)
5501 break;
5502 for (x=0; x < (ssize_t) image->columns; x++)
5503 {
5504 (void) GetFillColor(draw_info,x,y,&pixel);
5505 SetPixelOpacity(q,pixel.opacity);
5506 q++;
5507 }
5508 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5509 if (status == MagickFalse)
5510 break;
5511 }
5512 break;
5513 }
5514 }
5515 break;
5516 }
5517 case ImagePrimitive:
5518 {
5519 AffineMatrix
5520 affine;
5521
5522 char
5523 composite_geometry[MaxTextExtent];
5524
5525 Image
5526 *composite_image,
5527 *composite_images;
5528
5529 ImageInfo
5530 *clone_info;
5531
5532 RectangleInfo
5533 geometry;
5534
5535 ssize_t
5536 x1,
5537 y1;
5538
5539 if (primitive_info->text == (char *) NULL)
5540 break;
5541 clone_info=AcquireImageInfo();
5542 composite_images=(Image *) NULL;
5543 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5544 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5545 &image->exception);
5546 else
5547 if (*primitive_info->text != '\0')
5548 {
5549 const char
5550 *option;
5551
5552 MagickStatusType
5553 path_status;
5554
5555 struct stat
5556 attributes;
5557
5558 /*
5559 Read composite image.
5560 */
5561 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5562 MagickPathExtent);
5563 (void) SetImageInfo(clone_info,1,exception);
5564 option=GetImageOption(clone_info,"svg:embedding");
5565 if ((option == (char *) NULL) &&
5566 (IsStringTrue(option) == MagickFalse))
5567 {
5568 const MagickInfo
5569 *magick_info;
5570
5571 magick_info=GetMagickInfo(clone_info->magick,exception);
5572 if ((magick_info != (const MagickInfo*) NULL) &&
5573 (LocaleCompare(magick_info->magick_module,"SVG") == 0))
5574 {
5575 (void) ThrowMagickException(exception,GetMagickModule(),
5576 CorruptImageError,"ImageTypeNotSupported","`%s'",
5577 clone_info->filename);
5578 clone_info=DestroyImageInfo(clone_info);
5579 break;
5580 }
5581 }
5582 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5583 MagickPathExtent);
5584 if (clone_info->size != (char *) NULL)
5585 clone_info->size=DestroyString(clone_info->size);
5586 if (clone_info->extract != (char *) NULL)
5587 clone_info->extract=DestroyString(clone_info->extract);
5588 path_status=GetPathAttributes(clone_info->filename,&attributes);
5589 if (path_status != MagickFalse)
5590 {
5591 if (S_ISCHR(attributes.st_mode) == 0)
5592 composite_images=ReadImage(clone_info,exception);
5593 else
5594 (void) ThrowMagickException(exception,GetMagickModule(),
5595 FileOpenError,"UnableToOpenFile","`%s'",
5596 clone_info->filename);
5597 }
5598 else
5599 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5600 (LocaleCompare(clone_info->magick,"http") != 0) &&
5601 (LocaleCompare(clone_info->magick,"https") != 0) &&
5602 (LocaleCompare(clone_info->magick,"vid") != 0))
5603 composite_images=ReadImage(clone_info,exception);
5604 else
5605 (void) ThrowMagickException(exception,GetMagickModule(),
5606 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5607 }
5608 clone_info=DestroyImageInfo(clone_info);
5609 if (composite_images == (Image *) NULL)
5610 {
5611 status=0;
5612 break;
5613 }
5614 composite_image=RemoveFirstImageFromList(&composite_images);
5615 composite_images=DestroyImageList(composite_images);
5616 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5617 NULL,(void *) NULL);
5618 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5619 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5620 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5621 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5622 {
5623 char
5624 geometry[MaxTextExtent];
5625
5626 /*
5627 Resize image.
5628 */
5629 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5630 primitive_info[1].point.x,primitive_info[1].point.y);
5631 composite_image->filter=image->filter;
5632 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5633 }
5634 if (composite_image->matte == MagickFalse)
5635 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5636 if (draw_info->opacity != OpaqueOpacity)
5637 status&=SetImageOpacity(composite_image,draw_info->opacity);
5638 SetGeometry(image,&geometry);
5639 image->gravity=draw_info->gravity;
5640 geometry.x=x;
5641 geometry.y=y;
5642 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5643 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5644 composite_image->rows,(double) geometry.x,(double) geometry.y);
5645 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5646 &image->exception);
5647 affine=draw_info->affine;
5648 affine.tx=(double) geometry.x;
5649 affine.ty=(double) geometry.y;
5650 composite_image->interpolate=image->interpolate;
5651 if ((draw_info->compose == OverCompositeOp) ||
5652 (draw_info->compose == SrcOverCompositeOp))
5653 status&=DrawAffineImage(image,composite_image,&affine);
5654 else
5655 status&=CompositeImage(image,draw_info->compose,composite_image,
5656 geometry.x,geometry.y);
5657 composite_image=DestroyImage(composite_image);
5658 break;
5659 }
5660 case PointPrimitive:
5661 {
5662 PixelPacket
5663 fill_color;
5664
5665 PixelPacket
5666 *q;
5667
5668 if ((y < 0) || (y >= (ssize_t) image->rows))
5669 break;
5670 if ((x < 0) || (x >= (ssize_t) image->columns))
5671 break;
5672 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5673 if (q == (PixelPacket *) NULL)
5674 break;
5675 (void) GetFillColor(draw_info,x,y,&fill_color);
5676 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5677 (MagickRealType) q->opacity,q);
5678 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5679 break;
5680 }
5681 case TextPrimitive:
5682 {
5683 char
5684 geometry[MaxTextExtent];
5685
5686 DrawInfo
5687 *clone_info;
5688
5689 if (primitive_info->text == (char *) NULL)
5690 break;
5691 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5692 (void) CloneString(&clone_info->text,primitive_info->text);
5693 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5694 primitive_info->point.x,primitive_info->point.y);
5695 (void) CloneString(&clone_info->geometry,geometry);
5696 status&=AnnotateImage(image,clone_info);
5697 clone_info=DestroyDrawInfo(clone_info);
5698 break;
5699 }
5700 default:
5701 {
5702 double
5703 mid,
5704 scale;
5705
5706 DrawInfo
5707 *clone_info;
5708
5709 if (IsEventLogging() != MagickFalse)
5710 LogPrimitiveInfo(primitive_info);
5711 scale=ExpandAffine(&draw_info->affine);
5712 if ((draw_info->dash_pattern != (double *) NULL) &&
5713 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5714 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5715 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5716 {
5717 /*
5718 Draw dash polygon.
5719 */
5720 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5721 clone_info->stroke_width=0.0;
5722 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5723 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5724 clone_info=DestroyDrawInfo(clone_info);
5725 if (status != MagickFalse)
5726 status&=DrawDashPolygon(draw_info,primitive_info,image);
5727 break;
5728 }
5729 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5730 if ((mid > 1.0) &&
5731 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5732 (draw_info->stroke_pattern != (Image *) NULL)))
5733 {
5734 double
5735 x,
5736 y;
5737
5738 MagickBooleanType
5739 closed_path;
5740
5741 /*
5742 Draw strokes while respecting line cap/join attributes.
5743 */
5744 closed_path=primitive_info[0].closed_subpath;
5745 i=(ssize_t) primitive_info[0].coordinates;
5746 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5747 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5748 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5749 closed_path=MagickTrue;
5750 if ((((draw_info->linecap == RoundCap) ||
5751 (closed_path != MagickFalse)) &&
5752 (draw_info->linejoin == RoundJoin)) ||
5753 (primitive_info[i].primitive != UndefinedPrimitive))
5754 {
5755 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5756 break;
5757 }
5758 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5759 clone_info->stroke_width=0.0;
5760 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5761 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5762 clone_info=DestroyDrawInfo(clone_info);
5763 if (status != MagickFalse)
5764 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5765 break;
5766 }
5767 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5768 break;
5769 }
5770 }
5771 image_view=DestroyCacheView(image_view);
5772 if (draw_info->compliance == SVGCompliance)
5773 {
5774 status&=SetImageClipMask(image,(Image *) NULL);
5775 status&=SetImageMask(image,(Image *) NULL);
5776 }
5777 if (draw_info->debug != MagickFalse)
5778 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5779 return(status != 0 ? MagickTrue : MagickFalse);
5780}
5781␌
5782/*
5783%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5784% %
5785% %
5786% %
5787+ D r a w S t r o k e P o l y g o n %
5788% %
5789% %
5790% %
5791%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5792%
5793% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5794% the image while respecting the line cap and join attributes.
5795%
5796% The format of the DrawStrokePolygon method is:
5797%
5798% MagickBooleanType DrawStrokePolygon(Image *image,
5799% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5800%
5801% A description of each parameter follows:
5802%
5803% o image: the image.
5804%
5805% o draw_info: the draw info.
5806%
5807% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5808%
5809%
5810*/
5811
5812static MagickBooleanType DrawRoundLinecap(Image *image,
5813 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5814{
5815 PrimitiveInfo
5816 linecap[5];
5817
5818 ssize_t
5819 i;
5820
5821 for (i=0; i < 4; i++)
5822 linecap[i]=(*primitive_info);
5823 linecap[0].coordinates=4;
5824 linecap[1].point.x+=2.0*MagickEpsilon;
5825 linecap[2].point.x+=2.0*MagickEpsilon;
5826 linecap[2].point.y+=2.0*MagickEpsilon;
5827 linecap[3].point.y+=2.0*MagickEpsilon;
5828 linecap[4].primitive=UndefinedPrimitive;
5829 return(DrawPolygonPrimitive(image,draw_info,linecap));
5830}
5831
5832static MagickBooleanType DrawStrokePolygon(Image *image,
5833 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5834{
5835 DrawInfo
5836 *clone_info;
5837
5838 MagickBooleanType
5839 closed_path;
5840
5841 MagickStatusType
5842 status;
5843
5844 PrimitiveInfo
5845 *stroke_polygon;
5846
5847 const PrimitiveInfo
5848 *p,
5849 *q;
5850
5851 /*
5852 Draw stroked polygon.
5853 */
5854 if (draw_info->debug != MagickFalse)
5855 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5856 " begin draw-stroke-polygon");
5857 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5858 clone_info->fill=draw_info->stroke;
5859 if (clone_info->fill_pattern != (Image *) NULL)
5860 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5861 if (clone_info->stroke_pattern != (Image *) NULL)
5862 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5863 MagickTrue,&clone_info->stroke_pattern->exception);
5864 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5865 clone_info->stroke_width=0.0;
5866 clone_info->fill_rule=NonZeroRule;
5867 status=MagickTrue;
5868 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5869 {
5870 if (p->coordinates == 1)
5871 continue;
5872 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5873 if (stroke_polygon == (PrimitiveInfo *) NULL)
5874 {
5875 status=0;
5876 break;
5877 }
5878 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5879 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5880 if (status == 0)
5881 break;
5882 q=p+p->coordinates-1;
5883 closed_path=p->closed_subpath;
5884 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5885 {
5886 status&=DrawRoundLinecap(image,draw_info,p);
5887 status&=DrawRoundLinecap(image,draw_info,q);
5888 }
5889 }
5890 clone_info=DestroyDrawInfo(clone_info);
5891 if (draw_info->debug != MagickFalse)
5892 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5893 " end draw-stroke-polygon");
5894 return(status != 0 ? MagickTrue : MagickFalse);
5895}
5896␌
5897/*
5898%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5899% %
5900% %
5901% %
5902% G e t A f f i n e M a t r i x %
5903% %
5904% %
5905% %
5906%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5907%
5908% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5909% matrix.
5910%
5911% The format of the GetAffineMatrix method is:
5912%
5913% void GetAffineMatrix(AffineMatrix *affine_matrix)
5914%
5915% A description of each parameter follows:
5916%
5917% o affine_matrix: the affine matrix.
5918%
5919*/
5920MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5921{
5922 assert(affine_matrix != (AffineMatrix *) NULL);
5923 if (IsEventLogging() != MagickFalse)
5924 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5925 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5926 affine_matrix->sx=1.0;
5927 affine_matrix->sy=1.0;
5928}
5929␌
5930/*
5931%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5932% %
5933% %
5934% %
5935+ G e t D r a w I n f o %
5936% %
5937% %
5938% %
5939%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5940%
5941% GetDrawInfo() initializes draw_info to default values from image_info.
5942%
5943% The format of the GetDrawInfo method is:
5944%
5945% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5946%
5947% A description of each parameter follows:
5948%
5949% o image_info: the image info..
5950%
5951% o draw_info: the draw info.
5952%
5953*/
5954MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5955{
5956 char
5957 *next_token;
5958
5959 const char
5960 *option;
5961
5962 ExceptionInfo
5963 *exception;
5964
5965 /*
5966 Initialize draw attributes.
5967 */
5968 assert(draw_info != (DrawInfo *) NULL);
5969 if (IsEventLogging() != MagickFalse)
5970 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5971 (void) memset(draw_info,0,sizeof(*draw_info));
5972 draw_info->image_info=CloneImageInfo(image_info);
5973 GetAffineMatrix(&draw_info->affine);
5974 exception=AcquireExceptionInfo();
5975 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5976 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5977 draw_info->stroke_antialias=draw_info->image_info->antialias;
5978 draw_info->stroke_width=1.0;
5979 draw_info->fill_rule=EvenOddRule;
5980 draw_info->opacity=OpaqueOpacity;
5981 draw_info->fill_opacity=OpaqueOpacity;
5982 draw_info->stroke_opacity=OpaqueOpacity;
5983 draw_info->linecap=ButtCap;
5984 draw_info->linejoin=MiterJoin;
5985 draw_info->miterlimit=10;
5986 draw_info->decorate=NoDecoration;
5987 if (draw_info->image_info->font != (char *) NULL)
5988 draw_info->font=AcquireString(draw_info->image_info->font);
5989 if (draw_info->image_info->density != (char *) NULL)
5990 draw_info->density=AcquireString(draw_info->image_info->density);
5991 draw_info->text_antialias=draw_info->image_info->antialias;
5992 draw_info->pointsize=12.0;
5993 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5994 draw_info->pointsize=draw_info->image_info->pointsize;
5995 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5996 draw_info->border_color=draw_info->image_info->border_color;
5997 draw_info->compose=OverCompositeOp;
5998 if (draw_info->image_info->server_name != (char *) NULL)
5999 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
6000 draw_info->render=MagickTrue;
6001 draw_info->clip_path=MagickFalse;
6002 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
6003 MagickTrue : MagickFalse;
6004 option=GetImageOption(draw_info->image_info,"direction");
6005 if (option != (const char *) NULL)
6006 draw_info->direction=(DirectionType) ParseCommandOption(
6007 MagickDirectionOptions,MagickFalse,option);
6008 else
6009 draw_info->direction=UndefinedDirection;
6010 option=GetImageOption(draw_info->image_info,"encoding");
6011 if (option != (const char *) NULL)
6012 (void) CloneString(&draw_info->encoding,option);
6013 option=GetImageOption(draw_info->image_info,"family");
6014 if (option != (const char *) NULL)
6015 (void) CloneString(&draw_info->family,option);
6016 option=GetImageOption(draw_info->image_info,"fill");
6017 if (option != (const char *) NULL)
6018 (void) QueryColorDatabase(option,&draw_info->fill,exception);
6019 option=GetImageOption(draw_info->image_info,"gravity");
6020 if (option != (const char *) NULL)
6021 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6022 MagickFalse,option);
6023 option=GetImageOption(draw_info->image_info,"interline-spacing");
6024 if (option != (const char *) NULL)
6025 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6026 option=GetImageOption(draw_info->image_info,"interword-spacing");
6027 if (option != (const char *) NULL)
6028 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6029 option=GetImageOption(draw_info->image_info,"kerning");
6030 if (option != (const char *) NULL)
6031 draw_info->kerning=GetDrawValue(option,&next_token);
6032 option=GetImageOption(draw_info->image_info,"stroke");
6033 if (option != (const char *) NULL)
6034 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6035 option=GetImageOption(draw_info->image_info,"strokewidth");
6036 if (option != (const char *) NULL)
6037 draw_info->stroke_width=GetDrawValue(option,&next_token);
6038 option=GetImageOption(draw_info->image_info,"style");
6039 if (option != (const char *) NULL)
6040 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6041 MagickFalse,option);
6042 option=GetImageOption(draw_info->image_info,"undercolor");
6043 if (option != (const char *) NULL)
6044 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6045 option=GetImageOption(draw_info->image_info,"weight");
6046 if (option != (const char *) NULL)
6047 {
6048 ssize_t
6049 weight;
6050
6051 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6052 if (weight == -1)
6053 weight=(ssize_t) StringToUnsignedLong(option);
6054 draw_info->weight=(size_t) weight;
6055 }
6056 exception=DestroyExceptionInfo(exception);
6057 draw_info->signature=MagickCoreSignature;
6058}
6059␌
6060/*
6061%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6062% %
6063% %
6064% %
6065+ P e r m u t a t e %
6066% %
6067% %
6068% %
6069%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6070%
6071% Permutate() returns the permutation of the (n,k).
6072%
6073% The format of the Permutate method is:
6074%
6075% void Permutate(ssize_t n,ssize_t k)
6076%
6077% A description of each parameter follows:
6078%
6079% o n:
6080%
6081% o k:
6082%
6083%
6084*/
6085static inline double Permutate(const ssize_t n,const ssize_t k)
6086{
6087 double
6088 r;
6089
6090 ssize_t
6091 i;
6092
6093 r=1.0;
6094 for (i=k+1; i <= n; i++)
6095 r*=i;
6096 for (i=1; i <= (n-k); i++)
6097 r/=i;
6098 return(r);
6099}
6100␌
6101/*
6102%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6103% %
6104% %
6105% %
6106+ T r a c e P r i m i t i v e %
6107% %
6108% %
6109% %
6110%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6111%
6112% TracePrimitive is a collection of methods for generating graphic
6113% primitives such as arcs, ellipses, paths, etc.
6114%
6115*/
6116
6117static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6118 const PointInfo end,const PointInfo degrees)
6119{
6120 PointInfo
6121 center,
6122 radius;
6123
6124 center.x=0.5*(end.x+start.x);
6125 center.y=0.5*(end.y+start.y);
6126 radius.x=fabs(center.x-start.x);
6127 radius.y=fabs(center.y-start.y);
6128 return(TraceEllipse(mvg_info,center,radius,degrees));
6129}
6130
6131static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6132 const PointInfo end,const PointInfo arc,const double angle,
6133 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6134{
6135 double
6136 alpha,
6137 beta,
6138 delta,
6139 factor,
6140 gamma,
6141 theta;
6142
6143 MagickStatusType
6144 status;
6145
6146 PointInfo
6147 center,
6148 points[3],
6149 radii;
6150
6151 double
6152 cosine,
6153 sine;
6154
6155 PrimitiveInfo
6156 *primitive_info;
6157
6158 PrimitiveInfo
6159 *p;
6160
6161 ssize_t
6162 i;
6163
6164 size_t
6165 arc_segments;
6166
6167 ssize_t
6168 offset;
6169
6170 offset=mvg_info->offset;
6171 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6172 primitive_info->coordinates=0;
6173 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6174 (fabs(start.y-end.y) < MagickEpsilon))
6175 return(TracePoint(primitive_info,end));
6176 radii.x=fabs(arc.x);
6177 radii.y=fabs(arc.y);
6178 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6179 return(TraceLine(primitive_info,start,end));
6180 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6181 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6182 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6183 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6184 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6185 (radii.y*radii.y);
6186 if (delta < MagickEpsilon)
6187 return(TraceLine(primitive_info,start,end));
6188 if (delta > 1.0)
6189 {
6190 radii.x*=sqrt((double) delta);
6191 radii.y*=sqrt((double) delta);
6192 }
6193 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6194 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6195 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6196 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6197 alpha=points[1].x-points[0].x;
6198 beta=points[1].y-points[0].y;
6199 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6200 return(TraceLine(primitive_info,start,end));
6201 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6202 if (factor <= 0.0)
6203 factor=0.0;
6204 else
6205 {
6206 factor=sqrt((double) factor);
6207 if (sweep == large_arc)
6208 factor=(-factor);
6209 }
6210 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6211 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6212 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6213 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6214 if ((theta < 0.0) && (sweep != MagickFalse))
6215 theta+=2.0*MagickPI;
6216 else
6217 if ((theta > 0.0) && (sweep == MagickFalse))
6218 theta-=2.0*MagickPI;
6219 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6220 MagickPI+MagickEpsilon)))));
6221 p=primitive_info;
6222 status=MagickTrue;
6223 for (i=0; i < (ssize_t) arc_segments; i++)
6224 {
6225 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6226 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6227 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6228 sin(fmod((double) beta,DegreesToRadians(360.0)));
6229 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6230 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6231 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6232 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6233 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6234 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6235 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6236 theta/arc_segments),DegreesToRadians(360.0))));
6237 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6238 theta/arc_segments),DegreesToRadians(360.0))));
6239 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6240 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6241 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6242 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6243 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6244 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6245 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6246 points[0].y);
6247 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6248 points[0].y);
6249 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6250 points[1].y);
6251 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6252 points[1].y);
6253 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6254 points[2].y);
6255 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6256 points[2].y);
6257 if (i == (ssize_t) (arc_segments-1))
6258 (p+3)->point=end;
6259 status&=TraceBezier(mvg_info,4);
6260 if (status == 0)
6261 break;
6262 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6263 mvg_info->offset+=p->coordinates;
6264 p+=(ptrdiff_t) p->coordinates;
6265 }
6266 if (status == 0)
6267 return(MagickFalse);
6268 mvg_info->offset=offset;
6269 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6270 primitive_info->coordinates=(size_t) (p-primitive_info);
6271 primitive_info->closed_subpath=MagickFalse;
6272 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6273 {
6274 p->primitive=primitive_info->primitive;
6275 p--;
6276 }
6277 return(MagickTrue);
6278}
6279
6280static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6281 const size_t number_coordinates)
6282{
6283 double
6284 alpha,
6285 *coefficients,
6286 weight;
6287
6288 PointInfo
6289 end,
6290 point,
6291 *points;
6292
6293 PrimitiveInfo
6294 *primitive_info;
6295
6296 PrimitiveInfo
6297 *p;
6298
6299 ssize_t
6300 i,
6301 j;
6302
6303 size_t
6304 control_points,
6305 quantum;
6306
6307 /*
6308 Allocate coefficients.
6309 */
6310 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6311 quantum=number_coordinates;
6312 for (i=0; i < (ssize_t) number_coordinates; i++)
6313 {
6314 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6315 {
6316 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6317 if (alpha > (double) MAGICK_SSIZE_MAX)
6318 {
6319 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6320 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6321 return(MagickFalse);
6322 }
6323 if (alpha > (double) quantum)
6324 quantum=(size_t) alpha;
6325 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6326 if (alpha > (double) MAGICK_SSIZE_MAX)
6327 {
6328 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6329 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6330 return(MagickFalse);
6331 }
6332 if (alpha > (double) quantum)
6333 quantum=(size_t) alpha;
6334 }
6335 }
6336 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6337 sizeof(*coefficients));
6338 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6339 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6340 sizeof(*points));
6341 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6342 {
6343 if (points != (PointInfo *) NULL)
6344 points=(PointInfo *) RelinquishMagickMemory(points);
6345 if (coefficients != (double *) NULL)
6346 coefficients=(double *) RelinquishMagickMemory(coefficients);
6347 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6348 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6349 return(MagickFalse);
6350 }
6351 control_points=quantum*number_coordinates;
6352 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6353 {
6354 points=(PointInfo *) RelinquishMagickMemory(points);
6355 coefficients=(double *) RelinquishMagickMemory(coefficients);
6356 return(MagickFalse);
6357 }
6358 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6359 /*
6360 Compute bezier points.
6361 */
6362 end=primitive_info[number_coordinates-1].point;
6363 for (i=0; i < (ssize_t) number_coordinates; i++)
6364 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6365 weight=0.0;
6366 for (i=0; i < (ssize_t) control_points; i++)
6367 {
6368 p=primitive_info;
6369 point.x=0.0;
6370 point.y=0.0;
6371 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6372 for (j=0; j < (ssize_t) number_coordinates; j++)
6373 {
6374 point.x+=alpha*coefficients[j]*p->point.x;
6375 point.y+=alpha*coefficients[j]*p->point.y;
6376 alpha*=weight/(1.0-weight);
6377 p++;
6378 }
6379 points[i]=point;
6380 weight+=1.0/control_points;
6381 }
6382 /*
6383 Bezier curves are just short segmented polys.
6384 */
6385 p=primitive_info;
6386 for (i=0; i < (ssize_t) control_points; i++)
6387 {
6388 if (TracePoint(p,points[i]) == MagickFalse)
6389 {
6390 points=(PointInfo *) RelinquishMagickMemory(points);
6391 coefficients=(double *) RelinquishMagickMemory(coefficients);
6392 return(MagickFalse);
6393 }
6394 p+=(ptrdiff_t) p->coordinates;
6395 }
6396 if (TracePoint(p,end) == MagickFalse)
6397 {
6398 points=(PointInfo *) RelinquishMagickMemory(points);
6399 coefficients=(double *) RelinquishMagickMemory(coefficients);
6400 return(MagickFalse);
6401 }
6402 p+=(ptrdiff_t) p->coordinates;
6403 primitive_info->coordinates=(size_t) (p-primitive_info);
6404 primitive_info->closed_subpath=MagickFalse;
6405 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6406 {
6407 p->primitive=primitive_info->primitive;
6408 p--;
6409 }
6410 points=(PointInfo *) RelinquishMagickMemory(points);
6411 coefficients=(double *) RelinquishMagickMemory(coefficients);
6412 return(MagickTrue);
6413}
6414
6415static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6416 const PointInfo end)
6417{
6418 double
6419 alpha,
6420 beta,
6421 radius;
6422
6423 PointInfo
6424 offset,
6425 degrees;
6426
6427 alpha=end.x-start.x;
6428 beta=end.y-start.y;
6429 radius=hypot((double) alpha,(double) beta);
6430 offset.x=(double) radius;
6431 offset.y=(double) radius;
6432 degrees.x=0.0;
6433 degrees.y=360.0;
6434 return(TraceEllipse(mvg_info,start,offset,degrees));
6435}
6436
6437static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6438 const PointInfo radii,const PointInfo arc)
6439{
6440 double
6441 coordinates,
6442 delta,
6443 step,
6444 x,
6445 y;
6446
6447 PointInfo
6448 angle,
6449 point;
6450
6451 PrimitiveInfo
6452 *primitive_info;
6453
6454 PrimitiveInfo
6455 *p;
6456
6457 ssize_t
6458 i;
6459
6460 /*
6461 Ellipses are just short segmented polys.
6462 */
6463 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6464 primitive_info->coordinates=0;
6465 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6466 return(MagickTrue);
6467 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6468 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6469 angle.x=DegreesToRadians(arc.x);
6470 y=arc.y;
6471 while (y < arc.x)
6472 y+=360.0;
6473 angle.y=DegreesToRadians(y);
6474 coordinates=ceil((angle.y-angle.x)/step+1.0);
6475 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6476 return(MagickFalse);
6477 i=0;
6478 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6479 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6480 {
6481 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6482 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6483 if (i++ >= (ssize_t) coordinates)
6484 break;
6485 if (TracePoint(p,point) == MagickFalse)
6486 return(MagickFalse);
6487 p+=(ptrdiff_t) p->coordinates;
6488 }
6489 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6490 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6491 if (TracePoint(p,point) == MagickFalse)
6492 return(MagickFalse);
6493 p+=(ptrdiff_t) p->coordinates;
6494 primitive_info->coordinates=(size_t) (p-primitive_info);
6495 primitive_info->closed_subpath=MagickFalse;
6496 x=fabs(primitive_info[0].point.x-
6497 primitive_info[primitive_info->coordinates-1].point.x);
6498 y=fabs(primitive_info[0].point.y-
6499 primitive_info[primitive_info->coordinates-1].point.y);
6500 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6501 primitive_info->closed_subpath=MagickTrue;
6502 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6503 {
6504 p->primitive=primitive_info->primitive;
6505 p--;
6506 }
6507 return(MagickTrue);
6508}
6509
6510static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6511 const PointInfo start,const PointInfo end)
6512{
6513 if (TracePoint(primitive_info,start) == MagickFalse)
6514 return(MagickFalse);
6515 if (TracePoint(primitive_info+1,end) == MagickFalse)
6516 return(MagickFalse);
6517 (primitive_info+1)->primitive=primitive_info->primitive;
6518 primitive_info->coordinates=2;
6519 primitive_info->closed_subpath=MagickFalse;
6520 return(MagickTrue);
6521}
6522
6523static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6524{
6525 char
6526 *next_token,
6527 token[MaxTextExtent] = "";
6528
6529 const char
6530 *p;
6531
6532 double
6533 x,
6534 y;
6535
6536 int
6537 attribute,
6538 last_attribute;
6539
6540 MagickStatusType
6541 status;
6542
6543 PointInfo
6544 end = {0.0, 0.0},
6545 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6546 point = {0.0, 0.0},
6547 start = {0.0, 0.0};
6548
6549 PrimitiveInfo
6550 *primitive_info;
6551
6552 PrimitiveType
6553 primitive_type;
6554
6555 PrimitiveInfo
6556 *q;
6557
6558 ssize_t
6559 i;
6560
6561 size_t
6562 number_coordinates,
6563 z_count;
6564
6565 ssize_t
6566 subpath_offset;
6567
6568 subpath_offset=mvg_info->offset;
6569 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6570 status=MagickTrue;
6571 attribute=0;
6572 number_coordinates=0;
6573 z_count=0;
6574 *token='\0';
6575 primitive_type=primitive_info->primitive;
6576 q=primitive_info;
6577 for (p=path; *p != '\0'; )
6578 {
6579 if (status == MagickFalse)
6580 break;
6581 while (isspace((int) ((unsigned char) *p)) != 0)
6582 p++;
6583 if (*p == '\0')
6584 break;
6585 last_attribute=attribute;
6586 attribute=(int) (*p++);
6587 switch (attribute)
6588 {
6589 case 'a':
6590 case 'A':
6591 {
6592 double
6593 angle = 0.0;
6594
6595 MagickBooleanType
6596 large_arc = MagickFalse,
6597 sweep = MagickFalse;
6598
6599 PointInfo
6600 arc = {0.0, 0.0};
6601
6602 /*
6603 Elliptical arc.
6604 */
6605 do
6606 {
6607 (void) GetNextToken(p,&p,MaxTextExtent,token);
6608 if (*token == ',')
6609 (void) GetNextToken(p,&p,MaxTextExtent,token);
6610 arc.x=GetDrawValue(token,&next_token);
6611 if (token == next_token)
6612 ThrowPointExpectedException(image,token);
6613 (void) GetNextToken(p,&p,MaxTextExtent,token);
6614 if (*token == ',')
6615 (void) GetNextToken(p,&p,MaxTextExtent,token);
6616 arc.y=GetDrawValue(token,&next_token);
6617 if (token == next_token)
6618 ThrowPointExpectedException(image,token);
6619 (void) GetNextToken(p,&p,MaxTextExtent,token);
6620 if (*token == ',')
6621 (void) GetNextToken(p,&p,MaxTextExtent,token);
6622 angle=GetDrawValue(token,&next_token);
6623 if (token == next_token)
6624 ThrowPointExpectedException(image,token);
6625 (void) GetNextToken(p,&p,MaxTextExtent,token);
6626 if (*token == ',')
6627 (void) GetNextToken(p,&p,MaxTextExtent,token);
6628 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6629 (void) GetNextToken(p,&p,MaxTextExtent,token);
6630 if (*token == ',')
6631 (void) GetNextToken(p,&p,MaxTextExtent,token);
6632 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6633 if (*token == ',')
6634 (void) GetNextToken(p,&p,MaxTextExtent,token);
6635 (void) GetNextToken(p,&p,MaxTextExtent,token);
6636 if (*token == ',')
6637 (void) GetNextToken(p,&p,MaxTextExtent,token);
6638 x=GetDrawValue(token,&next_token);
6639 if (token == next_token)
6640 ThrowPointExpectedException(image,token);
6641 (void) GetNextToken(p,&p,MaxTextExtent,token);
6642 if (*token == ',')
6643 (void) GetNextToken(p,&p,MaxTextExtent,token);
6644 y=GetDrawValue(token,&next_token);
6645 if (token == next_token)
6646 ThrowPointExpectedException(image,token);
6647 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6648 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6649 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6650 q=(*mvg_info->primitive_info)+mvg_info->offset;
6651 mvg_info->offset+=q->coordinates;
6652 q+=(ptrdiff_t) q->coordinates;
6653 point=end;
6654 while (isspace((int) ((unsigned char) *p)) != 0)
6655 p++;
6656 if (*p == ',')
6657 p++;
6658 } while (IsPoint(p) != MagickFalse);
6659 break;
6660 }
6661 case 'c':
6662 case 'C':
6663 {
6664 /*
6665 Cubic Bézier curve.
6666 */
6667 do
6668 {
6669 points[0]=point;
6670 for (i=1; i < 4; i++)
6671 {
6672 (void) GetNextToken(p,&p,MaxTextExtent,token);
6673 if (*token == ',')
6674 (void) GetNextToken(p,&p,MaxTextExtent,token);
6675 x=GetDrawValue(token,&next_token);
6676 if (token == next_token)
6677 ThrowPointExpectedException(image,token);
6678 (void) GetNextToken(p,&p,MaxTextExtent,token);
6679 if (*token == ',')
6680 (void) GetNextToken(p,&p,MaxTextExtent,token);
6681 y=GetDrawValue(token,&next_token);
6682 if (token == next_token)
6683 ThrowPointExpectedException(image,token);
6684 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6685 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6686 points[i]=end;
6687 }
6688 for (i=0; i < 4; i++)
6689 (q+i)->point=points[i];
6690 if (TraceBezier(mvg_info,4) == MagickFalse)
6691 return(-1);
6692 q=(*mvg_info->primitive_info)+mvg_info->offset;
6693 mvg_info->offset+=q->coordinates;
6694 q+=(ptrdiff_t) q->coordinates;
6695 point=end;
6696 while (isspace((int) ((unsigned char) *p)) != 0)
6697 p++;
6698 if (*p == ',')
6699 p++;
6700 } while (IsPoint(p) != MagickFalse);
6701 break;
6702 }
6703 case 'H':
6704 case 'h':
6705 {
6706 do
6707 {
6708 (void) GetNextToken(p,&p,MaxTextExtent,token);
6709 if (*token == ',')
6710 (void) GetNextToken(p,&p,MaxTextExtent,token);
6711 x=GetDrawValue(token,&next_token);
6712 if (token == next_token)
6713 ThrowPointExpectedException(image,token);
6714 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6715 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6716 return(-1);
6717 q=(*mvg_info->primitive_info)+mvg_info->offset;
6718 if (TracePoint(q,point) == MagickFalse)
6719 return(-1);
6720 mvg_info->offset+=q->coordinates;
6721 q+=(ptrdiff_t) q->coordinates;
6722 while (isspace((int) ((unsigned char) *p)) != 0)
6723 p++;
6724 if (*p == ',')
6725 p++;
6726 } while (IsPoint(p) != MagickFalse);
6727 break;
6728 }
6729 case 'l':
6730 case 'L':
6731 {
6732 /*
6733 Line to.
6734 */
6735 do
6736 {
6737 (void) GetNextToken(p,&p,MaxTextExtent,token);
6738 if (*token == ',')
6739 (void) GetNextToken(p,&p,MaxTextExtent,token);
6740 x=GetDrawValue(token,&next_token);
6741 if (token == next_token)
6742 ThrowPointExpectedException(image,token);
6743 (void) GetNextToken(p,&p,MaxTextExtent,token);
6744 if (*token == ',')
6745 (void) GetNextToken(p,&p,MaxTextExtent,token);
6746 y=GetDrawValue(token,&next_token);
6747 if (token == next_token)
6748 ThrowPointExpectedException(image,token);
6749 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6750 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6751 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6752 return(-1);
6753 q=(*mvg_info->primitive_info)+mvg_info->offset;
6754 if (TracePoint(q,point) == MagickFalse)
6755 return(-1);
6756 mvg_info->offset+=q->coordinates;
6757 q+=(ptrdiff_t) q->coordinates;
6758 while (isspace((int) ((unsigned char) *p)) != 0)
6759 p++;
6760 if (*p == ',')
6761 p++;
6762 } while (IsPoint(p) != MagickFalse);
6763 break;
6764 }
6765 case 'M':
6766 case 'm':
6767 {
6768 /*
6769 Move to.
6770 */
6771 if (mvg_info->offset != subpath_offset)
6772 {
6773 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6774 primitive_info->coordinates=(size_t) (q-primitive_info);
6775 number_coordinates+=primitive_info->coordinates;
6776 primitive_info=q;
6777 subpath_offset=mvg_info->offset;
6778 }
6779 i=0;
6780 do
6781 {
6782 (void) GetNextToken(p,&p,MaxTextExtent,token);
6783 if (*token == ',')
6784 (void) GetNextToken(p,&p,MaxTextExtent,token);
6785 x=GetDrawValue(token,&next_token);
6786 if (token == next_token)
6787 ThrowPointExpectedException(image,token);
6788 (void) GetNextToken(p,&p,MaxTextExtent,token);
6789 if (*token == ',')
6790 (void) GetNextToken(p,&p,MaxTextExtent,token);
6791 y=GetDrawValue(token,&next_token);
6792 if (token == next_token)
6793 ThrowPointExpectedException(image,token);
6794 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6795 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6796 if (i == 0)
6797 start=point;
6798 i++;
6799 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6800 return(-1);
6801 q=(*mvg_info->primitive_info)+mvg_info->offset;
6802 if (TracePoint(q,point) == MagickFalse)
6803 return(-1);
6804 mvg_info->offset+=q->coordinates;
6805 q+=(ptrdiff_t) q->coordinates;
6806 while (isspace((int) ((unsigned char) *p)) != 0)
6807 p++;
6808 if (*p == ',')
6809 p++;
6810 } while (IsPoint(p) != MagickFalse);
6811 break;
6812 }
6813 case 'q':
6814 case 'Q':
6815 {
6816 /*
6817 Quadratic Bézier curve.
6818 */
6819 do
6820 {
6821 points[0]=point;
6822 for (i=1; i < 3; i++)
6823 {
6824 (void) GetNextToken(p,&p,MaxTextExtent,token);
6825 if (*token == ',')
6826 (void) GetNextToken(p,&p,MaxTextExtent,token);
6827 x=GetDrawValue(token,&next_token);
6828 if (token == next_token)
6829 ThrowPointExpectedException(image,token);
6830 (void) GetNextToken(p,&p,MaxTextExtent,token);
6831 if (*token == ',')
6832 (void) GetNextToken(p,&p,MaxTextExtent,token);
6833 y=GetDrawValue(token,&next_token);
6834 if (token == next_token)
6835 ThrowPointExpectedException(image,token);
6836 if (*p == ',')
6837 p++;
6838 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6839 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6840 points[i]=end;
6841 }
6842 for (i=0; i < 3; i++)
6843 (q+i)->point=points[i];
6844 if (TraceBezier(mvg_info,3) == MagickFalse)
6845 return(-1);
6846 q=(*mvg_info->primitive_info)+mvg_info->offset;
6847 mvg_info->offset+=q->coordinates;
6848 q+=(ptrdiff_t) q->coordinates;
6849 point=end;
6850 while (isspace((int) ((unsigned char) *p)) != 0)
6851 p++;
6852 if (*p == ',')
6853 p++;
6854 } while (IsPoint(p) != MagickFalse);
6855 break;
6856 }
6857 case 's':
6858 case 'S':
6859 {
6860 /*
6861 Cubic Bézier curve.
6862 */
6863 do
6864 {
6865 points[0]=points[3];
6866 points[1].x=2.0*points[3].x-points[2].x;
6867 points[1].y=2.0*points[3].y-points[2].y;
6868 for (i=2; i < 4; i++)
6869 {
6870 (void) GetNextToken(p,&p,MaxTextExtent,token);
6871 if (*token == ',')
6872 (void) GetNextToken(p,&p,MaxTextExtent,token);
6873 x=GetDrawValue(token,&next_token);
6874 if (token == next_token)
6875 ThrowPointExpectedException(image,token);
6876 (void) GetNextToken(p,&p,MaxTextExtent,token);
6877 if (*token == ',')
6878 (void) GetNextToken(p,&p,MaxTextExtent,token);
6879 y=GetDrawValue(token,&next_token);
6880 if (token == next_token)
6881 ThrowPointExpectedException(image,token);
6882 if (*p == ',')
6883 p++;
6884 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6885 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6886 points[i]=end;
6887 }
6888 if (strchr("CcSs",last_attribute) == (char *) NULL)
6889 {
6890 points[0]=point;
6891 points[1]=point;
6892 }
6893 for (i=0; i < 4; i++)
6894 (q+i)->point=points[i];
6895 if (TraceBezier(mvg_info,4) == MagickFalse)
6896 return(-1);
6897 q=(*mvg_info->primitive_info)+mvg_info->offset;
6898 mvg_info->offset+=q->coordinates;
6899 q+=(ptrdiff_t) q->coordinates;
6900 point=end;
6901 last_attribute=attribute;
6902 while (isspace((int) ((unsigned char) *p)) != 0)
6903 p++;
6904 if (*p == ',')
6905 p++;
6906 } while (IsPoint(p) != MagickFalse);
6907 break;
6908 }
6909 case 't':
6910 case 'T':
6911 {
6912 /*
6913 Quadratic Bézier curve.
6914 */
6915 do
6916 {
6917 points[0]=points[2];
6918 points[1].x=2.0*points[2].x-points[1].x;
6919 points[1].y=2.0*points[2].y-points[1].y;
6920 for (i=2; i < 3; i++)
6921 {
6922 (void) GetNextToken(p,&p,MaxTextExtent,token);
6923 if (*token == ',')
6924 (void) GetNextToken(p,&p,MaxTextExtent,token);
6925 x=GetDrawValue(token,&next_token);
6926 if (token == next_token)
6927 ThrowPointExpectedException(image,token);
6928 (void) GetNextToken(p,&p,MaxTextExtent,token);
6929 if (*token == ',')
6930 (void) GetNextToken(p,&p,MaxTextExtent,token);
6931 y=GetDrawValue(token,&next_token);
6932 if (token == next_token)
6933 ThrowPointExpectedException(image,token);
6934 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6935 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6936 points[i]=end;
6937 }
6938 if (status == MagickFalse)
6939 break;
6940 if (strchr("QqTt",last_attribute) == (char *) NULL)
6941 {
6942 points[0]=point;
6943 points[1]=point;
6944 }
6945 for (i=0; i < 3; i++)
6946 (q+i)->point=points[i];
6947 if (TraceBezier(mvg_info,3) == MagickFalse)
6948 return(-1);
6949 q=(*mvg_info->primitive_info)+mvg_info->offset;
6950 mvg_info->offset+=q->coordinates;
6951 q+=(ptrdiff_t) q->coordinates;
6952 point=end;
6953 last_attribute=attribute;
6954 while (isspace((int) ((unsigned char) *p)) != 0)
6955 p++;
6956 if (*p == ',')
6957 p++;
6958 } while (IsPoint(p) != MagickFalse);
6959 break;
6960 }
6961 case 'v':
6962 case 'V':
6963 {
6964 /*
6965 Line to.
6966 */
6967 do
6968 {
6969 (void) GetNextToken(p,&p,MaxTextExtent,token);
6970 if (*token == ',')
6971 (void) GetNextToken(p,&p,MaxTextExtent,token);
6972 y=GetDrawValue(token,&next_token);
6973 if (token == next_token)
6974 ThrowPointExpectedException(image,token);
6975 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6976 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6977 return(-1);
6978 q=(*mvg_info->primitive_info)+mvg_info->offset;
6979 if (TracePoint(q,point) == MagickFalse)
6980 return(-1);
6981 mvg_info->offset+=q->coordinates;
6982 q+=(ptrdiff_t) q->coordinates;
6983 while (isspace((int) ((unsigned char) *p)) != 0)
6984 p++;
6985 if (*p == ',')
6986 p++;
6987 } while (IsPoint(p) != MagickFalse);
6988 break;
6989 }
6990 case 'z':
6991 case 'Z':
6992 {
6993 /*
6994 Close path.
6995 */
6996 point=start;
6997 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6998 return(-1);
6999 q=(*mvg_info->primitive_info)+mvg_info->offset;
7000 if (TracePoint(q,point) == MagickFalse)
7001 return(-1);
7002 mvg_info->offset+=q->coordinates;
7003 q+=(ptrdiff_t) q->coordinates;
7004 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7005 primitive_info->coordinates=(size_t) (q-primitive_info);
7006 primitive_info->closed_subpath=MagickTrue;
7007 number_coordinates+=primitive_info->coordinates;
7008 primitive_info=q;
7009 subpath_offset=mvg_info->offset;
7010 z_count++;
7011 break;
7012 }
7013 default:
7014 {
7015 ThrowPointExpectedException(image,token);
7016 break;
7017 }
7018 }
7019 }
7020 if (status == MagickFalse)
7021 return(-1);
7022 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7023 primitive_info->coordinates=(size_t) (q-primitive_info);
7024 number_coordinates+=primitive_info->coordinates;
7025 for (i=0; i < (ssize_t) number_coordinates; i++)
7026 {
7027 q--;
7028 q->primitive=primitive_type;
7029 if (z_count > 1)
7030 q->method=FillToBorderMethod;
7031 }
7032 q=primitive_info;
7033 return((ssize_t) number_coordinates);
7034}
7035
7036static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7037 const PointInfo start,const PointInfo end)
7038{
7039 PointInfo
7040 point;
7041
7042 PrimitiveInfo
7043 *p;
7044
7045 ssize_t
7046 i;
7047
7048 p=primitive_info;
7049 if (TracePoint(p,start) == MagickFalse)
7050 return(MagickFalse);
7051 p+=(ptrdiff_t) p->coordinates;
7052 point.x=start.x;
7053 point.y=end.y;
7054 if (TracePoint(p,point) == MagickFalse)
7055 return(MagickFalse);
7056 p+=(ptrdiff_t) p->coordinates;
7057 if (TracePoint(p,end) == MagickFalse)
7058 return(MagickFalse);
7059 p+=(ptrdiff_t) p->coordinates;
7060 point.x=end.x;
7061 point.y=start.y;
7062 if (TracePoint(p,point) == MagickFalse)
7063 return(MagickFalse);
7064 p+=(ptrdiff_t) p->coordinates;
7065 if (TracePoint(p,start) == MagickFalse)
7066 return(MagickFalse);
7067 p+=(ptrdiff_t) p->coordinates;
7068 primitive_info->coordinates=(size_t) (p-primitive_info);
7069 primitive_info->closed_subpath=MagickTrue;
7070 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7071 {
7072 p->primitive=primitive_info->primitive;
7073 p--;
7074 }
7075 return(MagickTrue);
7076}
7077
7078static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7079 const PointInfo start,const PointInfo end,PointInfo arc)
7080{
7081 PointInfo
7082 degrees,
7083 point,
7084 segment;
7085
7086 PrimitiveInfo
7087 *primitive_info;
7088
7089 PrimitiveInfo
7090 *p;
7091
7092 ssize_t
7093 i;
7094
7095 ssize_t
7096 offset;
7097
7098 offset=mvg_info->offset;
7099 segment.x=fabs(end.x-start.x);
7100 segment.y=fabs(end.y-start.y);
7101 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7102 {
7103 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7104 return(MagickTrue);
7105 }
7106 if (arc.x > (0.5*segment.x))
7107 arc.x=0.5*segment.x;
7108 if (arc.y > (0.5*segment.y))
7109 arc.y=0.5*segment.y;
7110 point.x=start.x+segment.x-arc.x;
7111 point.y=start.y+arc.y;
7112 degrees.x=270.0;
7113 degrees.y=360.0;
7114 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7115 return(MagickFalse);
7116 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7117 mvg_info->offset+=p->coordinates;
7118 point.x=start.x+segment.x-arc.x;
7119 point.y=start.y+segment.y-arc.y;
7120 degrees.x=0.0;
7121 degrees.y=90.0;
7122 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7123 return(MagickFalse);
7124 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7125 mvg_info->offset+=p->coordinates;
7126 point.x=start.x+arc.x;
7127 point.y=start.y+segment.y-arc.y;
7128 degrees.x=90.0;
7129 degrees.y=180.0;
7130 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7131 return(MagickFalse);
7132 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7133 mvg_info->offset+=p->coordinates;
7134 point.x=start.x+arc.x;
7135 point.y=start.y+arc.y;
7136 degrees.x=180.0;
7137 degrees.y=270.0;
7138 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7139 return(MagickFalse);
7140 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7141 mvg_info->offset+=p->coordinates;
7142 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7143 return(MagickFalse);
7144 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7145 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7146 return(MagickFalse);
7147 p+=(ptrdiff_t) p->coordinates;
7148 mvg_info->offset=offset;
7149 primitive_info=(*mvg_info->primitive_info)+offset;
7150 primitive_info->coordinates=(size_t) (p-primitive_info);
7151 primitive_info->closed_subpath=MagickTrue;
7152 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7153 {
7154 p->primitive=primitive_info->primitive;
7155 p--;
7156 }
7157 return(MagickTrue);
7158}
7159
7160static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7161 const size_t number_vertices,const double offset)
7162{
7163 double
7164 distance;
7165
7166 double
7167 dx,
7168 dy;
7169
7170 ssize_t
7171 i;
7172
7173 ssize_t
7174 j;
7175
7176 dx=0.0;
7177 dy=0.0;
7178 for (i=1; i < (ssize_t) number_vertices; i++)
7179 {
7180 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7181 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7182 if ((fabs((double) dx) >= MagickEpsilon) ||
7183 (fabs((double) dy) >= MagickEpsilon))
7184 break;
7185 }
7186 if (i == (ssize_t) number_vertices)
7187 i=(ssize_t) number_vertices-1L;
7188 distance=hypot((double) dx,(double) dy);
7189 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7190 dx*(distance+offset)/distance);
7191 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7192 dy*(distance+offset)/distance);
7193 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7194 {
7195 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7196 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7197 if ((fabs((double) dx) >= MagickEpsilon) ||
7198 (fabs((double) dy) >= MagickEpsilon))
7199 break;
7200 }
7201 distance=hypot((double) dx,(double) dy);
7202 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7203 dx*(distance+offset)/distance);
7204 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7205 dy*(distance+offset)/distance);
7206 return(MagickTrue);
7207}
7208
7209static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7210 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7211{
7212#define MaxStrokePad (6*BezierQuantum+360)
7213#define CheckPathExtent(pad_p,pad_q) \
7214{ \
7215 if ((pad_p) > MaxBezierCoordinates) \
7216 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7217 else \
7218 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7219 { \
7220 if (~extent_p < (pad_p)) \
7221 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7222 else \
7223 { \
7224 extent_p+=(pad_p); \
7225 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7226 MaxStrokePad,sizeof(*stroke_p)); \
7227 } \
7228 } \
7229 if ((pad_q) > MaxBezierCoordinates) \
7230 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7231 else \
7232 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7233 { \
7234 if (~extent_q < (pad_q)) \
7235 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7236 else \
7237 { \
7238 extent_q+=(pad_q); \
7239 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7240 MaxStrokePad,sizeof(*stroke_q)); \
7241 } \
7242 } \
7243 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7244 { \
7245 if (stroke_p != (PointInfo *) NULL) \
7246 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7247 if (stroke_q != (PointInfo *) NULL) \
7248 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7249 polygon_primitive=(PrimitiveInfo *) \
7250 RelinquishMagickMemory(polygon_primitive); \
7251 (void) ThrowMagickException(exception,GetMagickModule(), \
7252 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7253 return((PrimitiveInfo *) NULL); \
7254 } \
7255}
7256
7257 typedef struct _StrokeSegment
7258 {
7259 double
7260 p,
7261 q;
7262 } StrokeSegment;
7263
7264 double
7265 delta_theta,
7266 dot_product,
7267 mid,
7268 miterlimit;
7269
7270 MagickBooleanType
7271 closed_path;
7272
7273 PointInfo
7274 box_p[5],
7275 box_q[5],
7276 center,
7277 offset,
7278 *stroke_p,
7279 *stroke_q;
7280
7281 PrimitiveInfo
7282 *polygon_primitive,
7283 *stroke_polygon;
7284
7285 ssize_t
7286 i;
7287
7288 size_t
7289 arc_segments,
7290 extent_p,
7291 extent_q,
7292 number_vertices;
7293
7294 ssize_t
7295 j,
7296 n,
7297 p,
7298 q;
7299
7300 StrokeSegment
7301 dx = {0.0, 0.0},
7302 dy = {0.0, 0.0},
7303 inverse_slope = {0.0, 0.0},
7304 slope = {0.0, 0.0},
7305 theta = {0.0, 0.0};
7306
7307 /*
7308 Allocate paths.
7309 */
7310 number_vertices=primitive_info->coordinates;
7311 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7312 number_vertices+2UL,sizeof(*polygon_primitive));
7313 if (polygon_primitive == (PrimitiveInfo *) NULL)
7314 {
7315 (void) ThrowMagickException(exception,GetMagickModule(),
7316 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7317 return((PrimitiveInfo *) NULL);
7318 }
7319 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7320 sizeof(*polygon_primitive));
7321 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7322 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7323 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7324 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7325 if ((draw_info->linejoin == MiterJoin) ||
7326 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7327 {
7328 polygon_primitive[number_vertices]=primitive_info[1];
7329 number_vertices++;
7330 }
7331 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7332 /*
7333 Compute the slope for the first line segment, p.
7334 */
7335 closed_path=primitive_info[0].closed_subpath;
7336 dx.p=0.0;
7337 dy.p=0.0;
7338 for (n=1; n < (ssize_t) number_vertices; n++)
7339 {
7340 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7341 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7342 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7343 break;
7344 }
7345 if (n == (ssize_t) number_vertices)
7346 {
7347 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7348 {
7349 /*
7350 Zero length subpath.
7351 */
7352 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7353 sizeof(*stroke_polygon));
7354 stroke_polygon[0]=polygon_primitive[0];
7355 stroke_polygon[0].coordinates=0;
7356 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7357 polygon_primitive);
7358 return(stroke_polygon);
7359 }
7360 n=(ssize_t) number_vertices-1L;
7361 }
7362 extent_p=2*number_vertices;
7363 extent_q=2*number_vertices;
7364 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7365 sizeof(*stroke_p));
7366 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7367 sizeof(*stroke_q));
7368 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7369 {
7370 if (stroke_p != (PointInfo *) NULL)
7371 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7372 if (stroke_q != (PointInfo *) NULL)
7373 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7374 polygon_primitive=(PrimitiveInfo *)
7375 RelinquishMagickMemory(polygon_primitive);
7376 (void) ThrowMagickException(exception,GetMagickModule(),
7377 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7378 return((PrimitiveInfo *) NULL);
7379 }
7380 slope.p=0.0;
7381 inverse_slope.p=0.0;
7382 if (fabs(dx.p) < MagickEpsilon)
7383 {
7384 if (dx.p >= 0.0)
7385 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7386 else
7387 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7388 }
7389 else
7390 if (fabs(dy.p) < MagickEpsilon)
7391 {
7392 if (dy.p >= 0.0)
7393 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7394 else
7395 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7396 }
7397 else
7398 {
7399 slope.p=dy.p/dx.p;
7400 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7401 }
7402 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7403 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7404 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7405 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7406 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7407 offset.y=(double) (offset.x*inverse_slope.p);
7408 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7409 {
7410 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7411 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7412 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7413 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7414 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7415 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7416 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7417 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7418 }
7419 else
7420 {
7421 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7422 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7423 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7424 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7425 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7426 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7427 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7428 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7429 }
7430 /*
7431 Create strokes for the line join attribute: bevel, miter, round.
7432 */
7433 p=0;
7434 q=0;
7435 stroke_q[p++]=box_q[0];
7436 stroke_p[q++]=box_p[0];
7437 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7438 {
7439 /*
7440 Compute the slope for this line segment, q.
7441 */
7442 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7443 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7444 dot_product=dx.q*dx.q+dy.q*dy.q;
7445 if (dot_product < 0.25)
7446 continue;
7447 slope.q=0.0;
7448 inverse_slope.q=0.0;
7449 if (fabs(dx.q) < MagickEpsilon)
7450 {
7451 if (dx.q >= 0.0)
7452 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7453 else
7454 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7455 }
7456 else
7457 if (fabs(dy.q) < MagickEpsilon)
7458 {
7459 if (dy.q >= 0.0)
7460 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7461 else
7462 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7463 }
7464 else
7465 {
7466 slope.q=dy.q/dx.q;
7467 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7468 }
7469 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7470 offset.y=(double) (offset.x*inverse_slope.q);
7471 dot_product=dy.q*offset.x-dx.q*offset.y;
7472 if (dot_product > 0.0)
7473 {
7474 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7475 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7476 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7477 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7478 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7479 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7480 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7481 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7482 }
7483 else
7484 {
7485 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7486 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7487 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7488 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7489 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7490 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7491 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7492 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7493 }
7494 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7495 {
7496 box_p[4]=box_p[1];
7497 box_q[4]=box_q[1];
7498 }
7499 else
7500 {
7501 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7502 box_p[3].y)/(slope.p-slope.q));
7503 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7504 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7505 box_q[3].y)/(slope.p-slope.q));
7506 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7507 }
7508 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7509 dot_product=dx.q*dy.p-dx.p*dy.q;
7510 if (dot_product <= 0.0)
7511 switch (draw_info->linejoin)
7512 {
7513 case BevelJoin:
7514 {
7515 stroke_q[q++]=box_q[1];
7516 stroke_q[q++]=box_q[2];
7517 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7518 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7519 if (dot_product <= miterlimit)
7520 stroke_p[p++]=box_p[4];
7521 else
7522 {
7523 stroke_p[p++]=box_p[1];
7524 stroke_p[p++]=box_p[2];
7525 }
7526 break;
7527 }
7528 case MiterJoin:
7529 {
7530 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7531 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7532 if (dot_product <= miterlimit)
7533 {
7534 stroke_q[q++]=box_q[4];
7535 stroke_p[p++]=box_p[4];
7536 }
7537 else
7538 {
7539 stroke_q[q++]=box_q[1];
7540 stroke_q[q++]=box_q[2];
7541 stroke_p[p++]=box_p[1];
7542 stroke_p[p++]=box_p[2];
7543 }
7544 break;
7545 }
7546 case RoundJoin:
7547 {
7548 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7549 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7550 if (dot_product <= miterlimit)
7551 stroke_p[p++]=box_p[4];
7552 else
7553 {
7554 stroke_p[p++]=box_p[1];
7555 stroke_p[p++]=box_p[2];
7556 }
7557 center=polygon_primitive[n].point;
7558 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7559 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7560 if (theta.q < theta.p)
7561 theta.q+=2.0*MagickPI;
7562 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7563 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7564 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7565 stroke_q[q].x=box_q[1].x;
7566 stroke_q[q].y=box_q[1].y;
7567 q++;
7568 for (j=1; j < (ssize_t) arc_segments; j++)
7569 {
7570 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7571 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7572 (theta.p+delta_theta),DegreesToRadians(360.0))));
7573 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7574 (theta.p+delta_theta),DegreesToRadians(360.0))));
7575 q++;
7576 }
7577 stroke_q[q++]=box_q[2];
7578 break;
7579 }
7580 default:
7581 break;
7582 }
7583 else
7584 switch (draw_info->linejoin)
7585 {
7586 case BevelJoin:
7587 {
7588 stroke_p[p++]=box_p[1];
7589 stroke_p[p++]=box_p[2];
7590 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7591 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7592 if (dot_product <= miterlimit)
7593 stroke_q[q++]=box_q[4];
7594 else
7595 {
7596 stroke_q[q++]=box_q[1];
7597 stroke_q[q++]=box_q[2];
7598 }
7599 break;
7600 }
7601 case MiterJoin:
7602 {
7603 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7604 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7605 if (dot_product <= miterlimit)
7606 {
7607 stroke_q[q++]=box_q[4];
7608 stroke_p[p++]=box_p[4];
7609 }
7610 else
7611 {
7612 stroke_q[q++]=box_q[1];
7613 stroke_q[q++]=box_q[2];
7614 stroke_p[p++]=box_p[1];
7615 stroke_p[p++]=box_p[2];
7616 }
7617 break;
7618 }
7619 case RoundJoin:
7620 {
7621 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7622 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7623 if (dot_product <= miterlimit)
7624 stroke_q[q++]=box_q[4];
7625 else
7626 {
7627 stroke_q[q++]=box_q[1];
7628 stroke_q[q++]=box_q[2];
7629 }
7630 center=polygon_primitive[n].point;
7631 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7632 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7633 if (theta.p < theta.q)
7634 theta.p+=2.0*MagickPI;
7635 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7636 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7637 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7638 stroke_p[p++]=box_p[1];
7639 for (j=1; j < (ssize_t) arc_segments; j++)
7640 {
7641 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7642 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7643 (theta.p+delta_theta),DegreesToRadians(360.0))));
7644 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7645 (theta.p+delta_theta),DegreesToRadians(360.0))));
7646 p++;
7647 }
7648 stroke_p[p++]=box_p[2];
7649 break;
7650 }
7651 default:
7652 break;
7653 }
7654 slope.p=slope.q;
7655 inverse_slope.p=inverse_slope.q;
7656 box_p[0]=box_p[2];
7657 box_p[1]=box_p[3];
7658 box_q[0]=box_q[2];
7659 box_q[1]=box_q[3];
7660 dx.p=dx.q;
7661 dy.p=dy.q;
7662 n=i;
7663 }
7664 stroke_p[p++]=box_p[1];
7665 stroke_q[q++]=box_q[1];
7666 /*
7667 Trace stroked polygon.
7668 */
7669 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7670 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7671 if (stroke_polygon == (PrimitiveInfo *) NULL)
7672 {
7673 (void) ThrowMagickException(exception,GetMagickModule(),
7674 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7675 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7676 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7677 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7678 polygon_primitive);
7679 return(stroke_polygon);
7680 }
7681 for (i=0; i < (ssize_t) p; i++)
7682 {
7683 stroke_polygon[i]=polygon_primitive[0];
7684 stroke_polygon[i].point=stroke_p[i];
7685 }
7686 if (closed_path != MagickFalse)
7687 {
7688 stroke_polygon[i]=polygon_primitive[0];
7689 stroke_polygon[i].point=stroke_polygon[0].point;
7690 i++;
7691 }
7692 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7693 {
7694 stroke_polygon[i]=polygon_primitive[0];
7695 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7696 }
7697 if (closed_path != MagickFalse)
7698 {
7699 stroke_polygon[i]=polygon_primitive[0];
7700 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7701 i++;
7702 }
7703 stroke_polygon[i]=polygon_primitive[0];
7704 stroke_polygon[i].point=stroke_polygon[0].point;
7705 i++;
7706 stroke_polygon[i].primitive=UndefinedPrimitive;
7707 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7708 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7709 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7710 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7711 return(stroke_polygon);
7712}
_EdgeInfo
Definition draw.c:112
_ElementInfo
Definition draw.c:136
_MVGInfo
Definition draw.c:146
_PathInfo
Definition draw.c:182
_PolygonInfo
Definition draw.c:164