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/license/ %
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) GetMaxMemoryRequest()) || (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 if (n > MagickMaxRecursionDepth)
3488 (void) ThrowMagickException(&image->exception,
3489 GetMagickModule(),DrawError,"VectorGraphicsNestedTooDeeply",
3490 "`%s'",image->filename);
3491 break;
3492 }
3493 if (LocaleCompare("mask",token) == 0)
3494 {
3495 (void) GetNextToken(q,&q,extent,token);
3496 break;
3497 }
3498 if (LocaleCompare("pattern",token) == 0)
3499 {
3500 RectangleInfo
3501 bounds;
3502
3503 (void) GetNextToken(q,&q,extent,token);
3504 (void) CopyMagickString(name,token,MaxTextExtent);
3505 (void) GetNextToken(q,&q,extent,token);
3506 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3507 &next_token)-0.5));
3508 if (token == next_token)
3509 ThrowPointExpectedException(image,token);
3510 (void) GetNextToken(q,&q,extent,token);
3511 if (*token == ',')
3512 (void) GetNextToken(q,&q,extent,token);
3513 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3514 &next_token)-0.5));
3515 if (token == next_token)
3516 ThrowPointExpectedException(image,token);
3517 (void) GetNextToken(q,&q,extent,token);
3518 if (*token == ',')
3519 (void) GetNextToken(q,&q,extent,token);
3520 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3521 &next_token)+0.5);
3522 if (token == next_token)
3523 ThrowPointExpectedException(image,token);
3524 (void) GetNextToken(q,&q,extent,token);
3525 if (*token == ',')
3526 (void) GetNextToken(q,&q,extent,token);
3527 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3528 &next_token)+0.5);
3529 if (token == next_token)
3530 ThrowPointExpectedException(image,token);
3531 for (p=q; *q != '\0'; )
3532 {
3533 if (GetNextToken(q,&q,extent,token) < 1)
3534 break;
3535 if (LocaleCompare(token,"pop") != 0)
3536 continue;
3537 (void) GetNextToken(q,(const char **) NULL,extent,token);
3538 if (LocaleCompare(token,"pattern") != 0)
3539 continue;
3540 break;
3541 }
3542 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3543 {
3544 status=MagickFalse;
3545 break;
3546 }
3547 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3548 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3549 (void) SetImageArtifact(image,key,token);
3550 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3551 (void) FormatLocaleString(geometry,MaxTextExtent,
3552 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3553 bounds.height,(double) bounds.x,(double) bounds.y);
3554 (void) SetImageArtifact(image,key,geometry);
3555 (void) GetNextToken(q,&q,extent,token);
3556 break;
3557 }
3558 if (LocaleCompare("symbol",token) == 0)
3559 {
3560 symbolDepth++;
3561 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3562 MagickTrue;
3563 break;
3564 }
3565 status=MagickFalse;
3566 break;
3567 }
3568 status=MagickFalse;
3569 break;
3570 }
3571 case 'r':
3572 case 'R':
3573 {
3574 if (LocaleCompare("rectangle",keyword) == 0)
3575 {
3576 primitive_type=RectanglePrimitive;
3577 break;
3578 }
3579 if (LocaleCompare("rotate",keyword) == 0)
3580 {
3581 (void) GetNextToken(q,&q,extent,token);
3582 angle=GetDrawValue(token,&next_token);
3583 if (token == next_token)
3584 ThrowPointExpectedException(image,token);
3585 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3586 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3587 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3588 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3589 break;
3590 }
3591 if (LocaleCompare("roundRectangle",keyword) == 0)
3592 {
3593 primitive_type=RoundRectanglePrimitive;
3594 break;
3595 }
3596 status=MagickFalse;
3597 break;
3598 }
3599 case 's':
3600 case 'S':
3601 {
3602 if (LocaleCompare("scale",keyword) == 0)
3603 {
3604 (void) GetNextToken(q,&q,extent,token);
3605 affine.sx=GetDrawValue(token,&next_token);
3606 if (token == next_token)
3607 ThrowPointExpectedException(image,token);
3608 (void) GetNextToken(q,&q,extent,token);
3609 if (*token == ',')
3610 (void) GetNextToken(q,&q,extent,token);
3611 affine.sy=GetDrawValue(token,&next_token);
3612 if (token == next_token)
3613 ThrowPointExpectedException(image,token);
3614 break;
3615 }
3616 if (LocaleCompare("skewX",keyword) == 0)
3617 {
3618 (void) GetNextToken(q,&q,extent,token);
3619 angle=GetDrawValue(token,&next_token);
3620 if (token == next_token)
3621 ThrowPointExpectedException(image,token);
3622 affine.ry=sin(DegreesToRadians(angle));
3623 break;
3624 }
3625 if (LocaleCompare("skewY",keyword) == 0)
3626 {
3627 (void) GetNextToken(q,&q,extent,token);
3628 angle=GetDrawValue(token,&next_token);
3629 if (token == next_token)
3630 ThrowPointExpectedException(image,token);
3631 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3632 break;
3633 }
3634 if (LocaleCompare("stop-color",keyword) == 0)
3635 {
3636 GradientType
3637 type;
3638
3639 PixelPacket
3640 stop_color;
3641
3642 (void) GetNextToken(q,&q,extent,token);
3643 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3644 type=LinearGradient;
3645 if (draw_info->gradient.type == RadialGradient)
3646 type=RadialGradient;
3647 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3648 start_color=stop_color;
3649 (void) GetNextToken(q,&q,extent,token);
3650 break;
3651 }
3652 if (LocaleCompare("stroke",keyword) == 0)
3653 {
3654 const char
3655 *mvg_class;
3656
3657 (void) GetNextToken(q,&q,extent,token);
3658 if (graphic_context[n]->clip_path != MagickFalse)
3659 break;
3660 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3661 if (mvg_class != (const char *) NULL)
3662 {
3663 (void) DrawPatternPath(image,draw_info,mvg_class,
3664 &graphic_context[n]->stroke_pattern);
3665 break;
3666 }
3667 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3668 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3669 {
3670 (void) DrawPatternPath(image,draw_info,token,
3671 &graphic_context[n]->stroke_pattern);
3672 break;
3673 }
3674 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3675 &image->exception);
3676 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3677 graphic_context[n]->stroke.opacity=ClampToQuantum(
3678 graphic_context[n]->stroke_opacity);
3679 break;
3680 }
3681 if (LocaleCompare("stroke-antialias",keyword) == 0)
3682 {
3683 (void) GetNextToken(q,&q,extent,token);
3684 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3685 MagickTrue : MagickFalse;
3686 break;
3687 }
3688 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3689 {
3690 if (graphic_context[n]->dash_pattern != (double *) NULL)
3691 graphic_context[n]->dash_pattern=(double *)
3692 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3693 if (IsPoint(q) != MagickFalse)
3694 {
3695 const char
3696 *p;
3697
3698 p=q;
3699 (void) GetNextToken(p,&p,extent,token);
3700 if (*token == ',')
3701 (void) GetNextToken(p,&p,extent,token);
3702 for (x=0; IsPoint(token) != MagickFalse; x++)
3703 {
3704 (void) GetNextToken(p,&p,extent,token);
3705 if (*token == ',')
3706 (void) GetNextToken(p,&p,extent,token);
3707 }
3708 graphic_context[n]->dash_pattern=(double *)
3709 AcquireQuantumMemory((size_t) (2*x+2),
3710 sizeof(*graphic_context[n]->dash_pattern));
3711 if (graphic_context[n]->dash_pattern == (double *) NULL)
3712 {
3713 (void) ThrowMagickException(&image->exception,
3714 GetMagickModule(),ResourceLimitError,
3715 "MemoryAllocationFailed","`%s'",image->filename);
3716 status=MagickFalse;
3717 break;
3718 }
3719 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3720 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3721 for (j=0; j < x; j++)
3722 {
3723 (void) GetNextToken(q,&q,extent,token);
3724 if (*token == ',')
3725 (void) GetNextToken(q,&q,extent,token);
3726 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3727 &next_token);
3728 if (token == next_token)
3729 ThrowPointExpectedException(image,token);
3730 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3731 status=MagickFalse;
3732 }
3733 if ((x & 0x01) != 0)
3734 for ( ; j < (2*x); j++)
3735 graphic_context[n]->dash_pattern[j]=
3736 graphic_context[n]->dash_pattern[j-x];
3737 graphic_context[n]->dash_pattern[j]=0.0;
3738 break;
3739 }
3740 (void) GetNextToken(q,&q,extent,token);
3741 break;
3742 }
3743 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3744 {
3745 (void) GetNextToken(q,&q,extent,token);
3746 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3747 if (token == next_token)
3748 ThrowPointExpectedException(image,token);
3749 break;
3750 }
3751 if (LocaleCompare("stroke-linecap",keyword) == 0)
3752 {
3753 ssize_t
3754 linecap;
3755
3756 (void) GetNextToken(q,&q,extent,token);
3757 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3758 if (linecap == -1)
3759 {
3760 status=MagickFalse;
3761 break;
3762 }
3763 graphic_context[n]->linecap=(LineCap) linecap;
3764 break;
3765 }
3766 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3767 {
3768 ssize_t
3769 linejoin;
3770
3771 (void) GetNextToken(q,&q,extent,token);
3772 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3773 token);
3774 if (linejoin == -1)
3775 {
3776 status=MagickFalse;
3777 break;
3778 }
3779 graphic_context[n]->linejoin=(LineJoin) linejoin;
3780 break;
3781 }
3782 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3783 {
3784 (void) GetNextToken(q,&q,extent,token);
3785 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3786 break;
3787 }
3788 if (LocaleCompare("stroke-opacity",keyword) == 0)
3789 {
3790 double
3791 opacity;
3792
3793 (void) GetNextToken(q,&q,extent,token);
3794 if (graphic_context[n]->clip_path != MagickFalse)
3795 break;
3796 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3797 opacity=MagickMin(MagickMax(factor*
3798 GetDrawValue(token,&next_token),0.0),1.0);
3799 if (token == next_token)
3800 ThrowPointExpectedException(image,token);
3801 if (graphic_context[n]->compliance == SVGCompliance)
3802 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3803 else
3804 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3805 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3806 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3807 graphic_context[n]->stroke.opacity=(Quantum)
3808 graphic_context[n]->stroke_opacity;
3809 else
3810 graphic_context[n]->stroke.opacity=ClampToQuantum(
3811 (MagickRealType) QuantumRange*opacity);
3812 break;
3813 }
3814 if (LocaleCompare("stroke-width",keyword) == 0)
3815 {
3816 (void) GetNextToken(q,&q,extent,token);
3817 if (graphic_context[n]->clip_path != MagickFalse)
3818 break;
3819 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3820 if ((token == next_token) ||
3821 (graphic_context[n]->stroke_width < 0.0))
3822 ThrowPointExpectedException(image,token);
3823 break;
3824 }
3825 status=MagickFalse;
3826 break;
3827 }
3828 case 't':
3829 case 'T':
3830 {
3831 if (LocaleCompare("text",keyword) == 0)
3832 {
3833 primitive_type=TextPrimitive;
3834 cursor=0.0;
3835 break;
3836 }
3837 if (LocaleCompare("text-align",keyword) == 0)
3838 {
3839 ssize_t
3840 align;
3841
3842 (void) GetNextToken(q,&q,extent,token);
3843 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3844 if (align == -1)
3845 {
3846 status=MagickFalse;
3847 break;
3848 }
3849 graphic_context[n]->align=(AlignType) align;
3850 break;
3851 }
3852 if (LocaleCompare("text-anchor",keyword) == 0)
3853 {
3854 ssize_t
3855 align;
3856
3857 (void) GetNextToken(q,&q,extent,token);
3858 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3859 if (align == -1)
3860 {
3861 status=MagickFalse;
3862 break;
3863 }
3864 graphic_context[n]->align=(AlignType) align;
3865 break;
3866 }
3867 if (LocaleCompare("text-antialias",keyword) == 0)
3868 {
3869 (void) GetNextToken(q,&q,extent,token);
3870 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3871 MagickTrue : MagickFalse;
3872 break;
3873 }
3874 if (LocaleCompare("text-undercolor",keyword) == 0)
3875 {
3876 (void) GetNextToken(q,&q,extent,token);
3877 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3878 &image->exception);
3879 break;
3880 }
3881 if (LocaleCompare("translate",keyword) == 0)
3882 {
3883 (void) GetNextToken(q,&q,extent,token);
3884 affine.tx=GetDrawValue(token,&next_token);
3885 if (token == next_token)
3886 ThrowPointExpectedException(image,token);
3887 (void) GetNextToken(q,&q,extent,token);
3888 if (*token == ',')
3889 (void) GetNextToken(q,&q,extent,token);
3890 affine.ty=GetDrawValue(token,&next_token);
3891 if (token == next_token)
3892 ThrowPointExpectedException(image,token);
3893 break;
3894 }
3895 status=MagickFalse;
3896 break;
3897 }
3898 case 'u':
3899 case 'U':
3900 {
3901 if (LocaleCompare("use",keyword) == 0)
3902 {
3903 const char
3904 *use;
3905
3906 /*
3907 Get a macro from the MVG document, and "use" it here.
3908 */
3909 (void) GetNextToken(q,&q,extent,token);
3910 use=(const char *) GetValueFromSplayTree(macros,token);
3911 if (use != (const char *) NULL)
3912 {
3913 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3914 (void) CloneString(&clone_info->primitive,use);
3915 status=RenderMVGContent(image,clone_info,depth+1);
3916 clone_info=DestroyDrawInfo(clone_info);
3917 }
3918 break;
3919 }
3920 status=MagickFalse;
3921 break;
3922 }
3923 case 'v':
3924 case 'V':
3925 {
3926 if (LocaleCompare("viewbox",keyword) == 0)
3927 {
3928 (void) GetNextToken(q,&q,extent,token);
3929 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3930 GetDrawValue(token,&next_token)-0.5));
3931 if (token == next_token)
3932 ThrowPointExpectedException(image,token);
3933 (void) GetNextToken(q,&q,extent,token);
3934 if (*token == ',')
3935 (void) GetNextToken(q,&q,extent,token);
3936 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3937 GetDrawValue(token,&next_token)-0.5));
3938 if (token == next_token)
3939 ThrowPointExpectedException(image,token);
3940 (void) GetNextToken(q,&q,extent,token);
3941 if (*token == ',')
3942 (void) GetNextToken(q,&q,extent,token);
3943 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3944 GetDrawValue(token,&next_token)+0.5);
3945 if (token == next_token)
3946 ThrowPointExpectedException(image,token);
3947 (void) GetNextToken(q,&q,extent,token);
3948 if (*token == ',')
3949 (void) GetNextToken(q,&q,extent,token);
3950 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3951 GetDrawValue(token,&next_token)+0.5);
3952 if (token == next_token)
3953 ThrowPointExpectedException(image,token);
3954 break;
3955 }
3956 status=MagickFalse;
3957 break;
3958 }
3959 case 'w':
3960 case 'W':
3961 {
3962 if (LocaleCompare("word-spacing",keyword) == 0)
3963 {
3964 (void) GetNextToken(q,&q,extent,token);
3965 graphic_context[n]->interword_spacing=GetDrawValue(token,
3966 &next_token);
3967 if (token == next_token)
3968 ThrowPointExpectedException(image,token);
3969 break;
3970 }
3971 status=MagickFalse;
3972 break;
3973 }
3974 default:
3975 {
3976 status=MagickFalse;
3977 break;
3978 }
3979 }
3980 if (status == MagickFalse)
3981 break;
3982 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3983 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3984 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3985 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3986 {
3987 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3988 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3989 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3990 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3991 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3992 current.tx;
3993 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3994 current.ty;
3995 }
3996 if (primitive_type == UndefinedPrimitive)
3997 {
3998 if ((draw_info->debug != MagickFalse) && (q > p))
3999 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4000 (q-p-1),p);
4001 continue;
4002 }
4003 /*
4004 Parse the primitive attributes.
4005 */
4006 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4007 if (primitive_info[i].text != (char *) NULL)
4008 primitive_info[i].text=DestroyString(primitive_info[i].text);
4009 i=0;
4010 mvg_info.offset=i;
4011 j=0;
4012 primitive_info[0].point.x=0.0;
4013 primitive_info[0].point.y=0.0;
4014 primitive_info[0].coordinates=0;
4015 primitive_info[0].method=FloodfillMethod;
4016 primitive_info[0].closed_subpath=MagickFalse;
4017 for (x=0; *q != '\0'; x++)
4018 {
4019 /*
4020 Define points.
4021 */
4022 if (IsPoint(q) == MagickFalse)
4023 break;
4024 (void) GetNextToken(q,&q,extent,token);
4025 point.x=GetDrawValue(token,&next_token);
4026 if (token == next_token)
4027 ThrowPointExpectedException(image,token);
4028 (void) GetNextToken(q,&q,extent,token);
4029 if (*token == ',')
4030 (void) GetNextToken(q,&q,extent,token);
4031 point.y=GetDrawValue(token,&next_token);
4032 if (token == next_token)
4033 ThrowPointExpectedException(image,token);
4034 (void) GetNextToken(q,(const char **) NULL,extent,token);
4035 if (*token == ',')
4036 (void) GetNextToken(q,&q,extent,token);
4037 primitive_info[i].primitive=primitive_type;
4038 primitive_info[i].point=point;
4039 primitive_info[i].coordinates=0;
4040 primitive_info[i].method=FloodfillMethod;
4041 primitive_info[i].closed_subpath=MagickFalse;
4042 i++;
4043 mvg_info.offset=i;
4044 if (i < (ssize_t) number_points)
4045 continue;
4046 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4047 primitive_info=(*mvg_info.primitive_info);
4048 }
4049 if (status == MagickFalse)
4050 break;
4051 if (primitive_info[j].text != (char *) NULL)
4052 primitive_info[j].text=DestroyString(primitive_info[j].text);
4053 primitive_info[j].primitive=primitive_type;
4054 primitive_info[j].coordinates=(size_t) x;
4055 primitive_info[j].method=FloodfillMethod;
4056 primitive_info[j].closed_subpath=MagickFalse;
4057 /*
4058 Circumscribe primitive within a circle.
4059 */
4060 bounds.x1=primitive_info[j].point.x;
4061 bounds.y1=primitive_info[j].point.y;
4062 bounds.x2=primitive_info[j].point.x;
4063 bounds.y2=primitive_info[j].point.y;
4064 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4065 {
4066 point=primitive_info[j+k].point;
4067 if (point.x < bounds.x1)
4068 bounds.x1=point.x;
4069 if (point.y < bounds.y1)
4070 bounds.y1=point.y;
4071 if (point.x > bounds.x2)
4072 bounds.x2=point.x;
4073 if (point.y > bounds.y2)
4074 bounds.y2=point.y;
4075 }
4076 /*
4077 Speculate how many points our primitive might consume.
4078 */
4079 coordinates=(double) primitive_info[j].coordinates;
4080 switch (primitive_type)
4081 {
4082 case RectanglePrimitive:
4083 {
4084 coordinates*=5.0;
4085 break;
4086 }
4087 case RoundRectanglePrimitive:
4088 {
4089 double
4090 alpha,
4091 beta,
4092 radius;
4093
4094 alpha=bounds.x2-bounds.x1;
4095 beta=bounds.y2-bounds.y1;
4096 radius=hypot(alpha,beta);
4097 coordinates*=5.0;
4098 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4099 BezierQuantum+360.0;
4100 break;
4101 }
4102 case BezierPrimitive:
4103 {
4104 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4105 break;
4106 }
4107 case PathPrimitive:
4108 {
4109 char
4110 *s,
4111 *t;
4112
4113 (void) GetNextToken(q,&q,extent,token);
4114 coordinates=1.0;
4115 t=token;
4116 for (s=token; *s != '\0'; s=t)
4117 {
4118 double
4119 value;
4120
4121 value=GetDrawValue(s,&t);
4122 (void) value;
4123 if (s == t)
4124 {
4125 t++;
4126 continue;
4127 }
4128 coordinates++;
4129 }
4130 for (s=token; *s != '\0'; s++)
4131 if (strspn(s,"AaCcQqSsTt") != 0)
4132 coordinates+=(20.0*BezierQuantum)+360.0;
4133 break;
4134 }
4135 default:
4136 break;
4137 }
4138 if (status == MagickFalse)
4139 break;
4140 if (((size_t) (i+coordinates)) >= number_points)
4141 {
4142 /*
4143 Resize based on speculative points required by primitive.
4144 */
4145 number_points+=coordinates+1;
4146 if (number_points < (size_t) coordinates)
4147 {
4148 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4149 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4150 image->filename);
4151 break;
4152 }
4153 mvg_info.offset=i;
4154 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4155 primitive_info=(*mvg_info.primitive_info);
4156 }
4157 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4158 primitive_info=(*mvg_info.primitive_info);
4159 if (status == MagickFalse)
4160 break;
4161 mvg_info.offset=j;
4162 switch (primitive_type)
4163 {
4164 case PointPrimitive:
4165 default:
4166 {
4167 if (primitive_info[j].coordinates != 1)
4168 {
4169 status=MagickFalse;
4170 break;
4171 }
4172 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4173 primitive_info=(*mvg_info.primitive_info);
4174 i=(ssize_t) (j+primitive_info[j].coordinates);
4175 break;
4176 }
4177 case LinePrimitive:
4178 {
4179 if (primitive_info[j].coordinates != 2)
4180 {
4181 status=MagickFalse;
4182 break;
4183 }
4184 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4185 primitive_info[j+1].point);
4186 primitive_info=(*mvg_info.primitive_info);
4187 i=(ssize_t) (j+primitive_info[j].coordinates);
4188 break;
4189 }
4190 case RectanglePrimitive:
4191 {
4192 if (primitive_info[j].coordinates != 2)
4193 {
4194 status=MagickFalse;
4195 break;
4196 }
4197 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4198 primitive_info[j+1].point);
4199 primitive_info=(*mvg_info.primitive_info);
4200 i=(ssize_t) (j+primitive_info[j].coordinates);
4201 break;
4202 }
4203 case RoundRectanglePrimitive:
4204 {
4205 if (primitive_info[j].coordinates != 3)
4206 {
4207 status=MagickFalse;
4208 break;
4209 }
4210 if ((primitive_info[j+2].point.x < 0.0) ||
4211 (primitive_info[j+2].point.y < 0.0))
4212 {
4213 status=MagickFalse;
4214 break;
4215 }
4216 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4217 {
4218 status=MagickFalse;
4219 break;
4220 }
4221 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4222 {
4223 status=MagickFalse;
4224 break;
4225 }
4226 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4227 primitive_info[j+1].point,primitive_info[j+2].point);
4228 primitive_info=(*mvg_info.primitive_info);
4229 i=(ssize_t) (j+primitive_info[j].coordinates);
4230 break;
4231 }
4232 case ArcPrimitive:
4233 {
4234 if (primitive_info[j].coordinates != 3)
4235 {
4236 status=MagickFalse;
4237 break;
4238 }
4239 status&=TraceArc(&mvg_info,primitive_info[j].point,
4240 primitive_info[j+1].point,primitive_info[j+2].point);
4241 primitive_info=(*mvg_info.primitive_info);
4242 i=(ssize_t) (j+primitive_info[j].coordinates);
4243 break;
4244 }
4245 case EllipsePrimitive:
4246 {
4247 if (primitive_info[j].coordinates != 3)
4248 {
4249 status=MagickFalse;
4250 break;
4251 }
4252 if ((primitive_info[j+1].point.x < 0.0) ||
4253 (primitive_info[j+1].point.y < 0.0))
4254 {
4255 status=MagickFalse;
4256 break;
4257 }
4258 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4259 primitive_info[j+1].point,primitive_info[j+2].point);
4260 primitive_info=(*mvg_info.primitive_info);
4261 i=(ssize_t) (j+primitive_info[j].coordinates);
4262 break;
4263 }
4264 case CirclePrimitive:
4265 {
4266 if (primitive_info[j].coordinates != 2)
4267 {
4268 status=MagickFalse;
4269 break;
4270 }
4271 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4272 primitive_info[j+1].point);
4273 primitive_info=(*mvg_info.primitive_info);
4274 i=(ssize_t) (j+primitive_info[j].coordinates);
4275 break;
4276 }
4277 case PolylinePrimitive:
4278 {
4279 if (primitive_info[j].coordinates < 1)
4280 {
4281 status=MagickFalse;
4282 break;
4283 }
4284 break;
4285 }
4286 case PolygonPrimitive:
4287 {
4288 if (primitive_info[j].coordinates < 3)
4289 {
4290 status=MagickFalse;
4291 break;
4292 }
4293 primitive_info[i]=primitive_info[j];
4294 primitive_info[i].coordinates=0;
4295 primitive_info[j].coordinates++;
4296 primitive_info[j].closed_subpath=MagickTrue;
4297 i++;
4298 break;
4299 }
4300 case BezierPrimitive:
4301 {
4302 if (primitive_info[j].coordinates < 3)
4303 {
4304 status=MagickFalse;
4305 break;
4306 }
4307 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4308 primitive_info=(*mvg_info.primitive_info);
4309 i=(ssize_t) (j+primitive_info[j].coordinates);
4310 break;
4311 }
4312 case PathPrimitive:
4313 {
4314 coordinates=(double) TracePath(image,&mvg_info,token);
4315 primitive_info=(*mvg_info.primitive_info);
4316 if (coordinates < 0.0)
4317 {
4318 status=MagickFalse;
4319 break;
4320 }
4321 i=(ssize_t) (j+coordinates);
4322 break;
4323 }
4324 case ColorPrimitive:
4325 case MattePrimitive:
4326 {
4327 ssize_t
4328 method;
4329
4330 if (primitive_info[j].coordinates != 1)
4331 {
4332 status=MagickFalse;
4333 break;
4334 }
4335 (void) GetNextToken(q,&q,extent,token);
4336 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4337 if (method == -1)
4338 {
4339 status=MagickFalse;
4340 break;
4341 }
4342 primitive_info[j].method=(PaintMethod) method;
4343 break;
4344 }
4345 case TextPrimitive:
4346 {
4347 char
4348 geometry[MagickPathExtent];
4349
4350 if (primitive_info[j].coordinates != 1)
4351 {
4352 status=MagickFalse;
4353 break;
4354 }
4355 if (*token != ',')
4356 (void) GetNextToken(q,&q,extent,token);
4357 (void) CloneString(&primitive_info[j].text,token);
4358 /*
4359 Compute text cursor offset.
4360 */
4361 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4362 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4363 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4364 {
4365 mvg_info.point=primitive_info->point;
4366 primitive_info->point.x+=cursor;
4367 }
4368 else
4369 {
4370 mvg_info.point=primitive_info->point;
4371 cursor=0.0;
4372 }
4373 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4374 primitive_info->point.x,primitive_info->point.y);
4375 clone_info->render=MagickFalse;
4376 clone_info->text=AcquireString(token);
4377 status&=GetTypeMetrics(image,clone_info,&metrics);
4378 clone_info=DestroyDrawInfo(clone_info);
4379 cursor+=metrics.width;
4380 if (graphic_context[n]->compliance != SVGCompliance)
4381 cursor=0.0;
4382 break;
4383 }
4384 case ImagePrimitive:
4385 {
4386 if (primitive_info[j].coordinates != 2)
4387 {
4388 status=MagickFalse;
4389 break;
4390 }
4391 (void) GetNextToken(q,&q,extent,token);
4392 (void) CloneString(&primitive_info[j].text,token);
4393 break;
4394 }
4395 }
4396 mvg_info.offset=i;
4397 if (status == 0)
4398 break;
4399 primitive_info[i].primitive=UndefinedPrimitive;
4400 if ((draw_info->debug != MagickFalse) && (q > p))
4401 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4402 /*
4403 Sanity check.
4404 */
4405 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4406 &graphic_context[n]->affine));
4407 primitive_info=(*mvg_info.primitive_info);
4408 if (status == 0)
4409 break;
4410 status&=CheckPrimitiveExtent(&mvg_info,(double)
4411 graphic_context[n]->stroke_width);
4412 primitive_info=(*mvg_info.primitive_info);
4413 if (status == 0)
4414 break;
4415 if (i == 0)
4416 continue;
4417 /*
4418 Transform points.
4419 */
4420 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4421 {
4422 point=primitive_info[i].point;
4423 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4424 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4425 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4426 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4427 point=primitive_info[i].point;
4428 if (point.x < graphic_context[n]->bounds.x1)
4429 graphic_context[n]->bounds.x1=point.x;
4430 if (point.y < graphic_context[n]->bounds.y1)
4431 graphic_context[n]->bounds.y1=point.y;
4432 if (point.x > graphic_context[n]->bounds.x2)
4433 graphic_context[n]->bounds.x2=point.x;
4434 if (point.y > graphic_context[n]->bounds.y2)
4435 graphic_context[n]->bounds.y2=point.y;
4436 if (primitive_info[i].primitive == ImagePrimitive)
4437 break;
4438 if (i >= (ssize_t) number_points)
4439 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4440 }
4441 if (graphic_context[n]->render != MagickFalse)
4442 {
4443 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4444 (graphic_context[n]->clip_mask != (char *) NULL) &&
4445 (LocaleCompare(graphic_context[n]->clip_mask,
4446 graphic_context[n-1]->clip_mask) != 0))
4447 {
4448 const char
4449 *clip_path;
4450
4451 clip_path=(const char *) GetValueFromSplayTree(macros,
4452 graphic_context[n]->clip_mask);
4453 if (clip_path != (const char *) NULL)
4454 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4455 clip_path);
4456 status&=DrawClipPath(image,graphic_context[n],
4457 graphic_context[n]->clip_mask);
4458 }
4459 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4460 }
4461 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4462 primitive_extent);
4463 if (proceed == MagickFalse)
4464 break;
4465 if (status == 0)
4466 break;
4467 }
4468 if (draw_info->debug != MagickFalse)
4469 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4470 /*
4471 Relinquish resources.
4472 */
4473 macros=DestroySplayTree(macros);
4474 token=DestroyString(token);
4475 if (primitive_info != (PrimitiveInfo *) NULL)
4476 {
4477 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4478 if (primitive_info[i].text != (char *) NULL)
4479 primitive_info[i].text=DestroyString(primitive_info[i].text);
4480 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4481 }
4482 primitive=DestroyString(primitive);
4483 for ( ; n >= 0; n--)
4484 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4485 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4486 if (status == MagickFalse)
4487 ThrowBinaryImageException(DrawError,
4488 "NonconformingDrawingPrimitiveDefinition",keyword);
4489 return(status != 0 ? MagickTrue : MagickFalse);
4490}
4491
4492MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4493{
4494 return(RenderMVGContent(image,draw_info,0));
4495}
4496␌
4497/*
4498%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4499% %
4500% %
4501% %
4502% D r a w P a t t e r n P a t h %
4503% %
4504% %
4505% %
4506%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4507%
4508% DrawPatternPath() draws a pattern.
4509%
4510% The format of the DrawPatternPath method is:
4511%
4512% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4513% const char *name,Image **pattern)
4514%
4515% A description of each parameter follows:
4516%
4517% o image: the image.
4518%
4519% o draw_info: the draw info.
4520%
4521% o name: the pattern name.
4522%
4523% o image: the image.
4524%
4525*/
4526MagickExport MagickBooleanType DrawPatternPath(Image *image,
4527 const DrawInfo *draw_info,const char *name,Image **pattern)
4528{
4529 char
4530 property[MaxTextExtent];
4531
4532 const char
4533 *geometry,
4534 *path,
4535 *type;
4536
4537 DrawInfo
4538 *clone_info;
4539
4540 ImageInfo
4541 *image_info;
4542
4543 MagickBooleanType
4544 status;
4545
4546 assert(image != (Image *) NULL);
4547 assert(image->signature == MagickCoreSignature);
4548 assert(draw_info != (const DrawInfo *) NULL);
4549 if (IsEventLogging() != MagickFalse)
4550 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4551 assert(name != (const char *) NULL);
4552 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4553 path=GetImageArtifact(image,property);
4554 if (path == (const char *) NULL)
4555 return(MagickFalse);
4556 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4557 geometry=GetImageArtifact(image,property);
4558 if (geometry == (const char *) NULL)
4559 return(MagickFalse);
4560 if ((*pattern) != (Image *) NULL)
4561 *pattern=DestroyImage(*pattern);
4562 image_info=AcquireImageInfo();
4563 image_info->size=AcquireString(geometry);
4564 *pattern=AcquireImage(image_info);
4565 image_info=DestroyImageInfo(image_info);
4566 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4567 &image->exception);
4568 (void) SetImageBackgroundColor(*pattern);
4569 if (draw_info->debug != MagickFalse)
4570 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4571 "begin pattern-path %s %s",name,geometry);
4572 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4573 if (clone_info->fill_pattern != (Image *) NULL)
4574 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4575 if (clone_info->stroke_pattern != (Image *) NULL)
4576 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4577 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4578 type=GetImageArtifact(image,property);
4579 if (type != (const char *) NULL)
4580 clone_info->gradient.type=(GradientType) ParseCommandOption(
4581 MagickGradientOptions,MagickFalse,type);
4582 (void) CloneString(&clone_info->primitive,path);
4583 status=RenderMVGContent(*pattern,clone_info,0);
4584 clone_info=DestroyDrawInfo(clone_info);
4585 if (draw_info->debug != MagickFalse)
4586 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4587 return(status);
4588}
4589␌
4590/*
4591%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4592% %
4593% %
4594% %
4595+ D r a w P o l y g o n P r i m i t i v e %
4596% %
4597% %
4598% %
4599%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4600%
4601% DrawPolygonPrimitive() draws a polygon on the image.
4602%
4603% The format of the DrawPolygonPrimitive method is:
4604%
4605% MagickBooleanType DrawPolygonPrimitive(Image *image,
4606% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4607%
4608% A description of each parameter follows:
4609%
4610% o image: the image.
4611%
4612% o draw_info: the draw info.
4613%
4614% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4615%
4616*/
4617
4618static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4619{
4620 ssize_t
4621 i;
4622
4623 assert(polygon_info != (PolygonInfo **) NULL);
4624 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4625 if (polygon_info[i] != (PolygonInfo *) NULL)
4626 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4627 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4628 return(polygon_info);
4629}
4630
4631static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4632 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4633{
4634 PathInfo
4635 *magick_restrict path_info;
4636
4637 PolygonInfo
4638 **polygon_info;
4639
4640 size_t
4641 number_threads;
4642
4643 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4644 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4645 sizeof(*polygon_info));
4646 if (polygon_info == (PolygonInfo **) NULL)
4647 {
4648 (void) ThrowMagickException(exception,GetMagickModule(),
4649 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4650 return((PolygonInfo **) NULL);
4651 }
4652 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4653 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4654 if (path_info == (PathInfo *) NULL)
4655 return(DestroyPolygonTLS(polygon_info));
4656 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4657 if (polygon_info[0] == (PolygonInfo *) NULL)
4658 {
4659 (void) ThrowMagickException(exception,GetMagickModule(),
4660 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4661 return(DestroyPolygonTLS(polygon_info));
4662 }
4663 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4664 return(polygon_info);
4665}
4666
4667static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4668 const size_t number_threads,ExceptionInfo *exception)
4669{
4670 ssize_t
4671 i;
4672
4673 for (i=1; i < (ssize_t) number_threads; i++)
4674 {
4675 EdgeInfo
4676 *edge_info;
4677
4678 ssize_t
4679 j;
4680
4681 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4682 sizeof(*polygon_info[i]));
4683 if (polygon_info[i] == (PolygonInfo *) NULL)
4684 {
4685 (void) ThrowMagickException(exception,GetMagickModule(),
4686 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4687 return(MagickFalse);
4688 }
4689 polygon_info[i]->number_edges=0;
4690 edge_info=polygon_info[0]->edges;
4691 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4692 polygon_info[0]->number_edges,sizeof(*edge_info));
4693 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4694 {
4695 (void) ThrowMagickException(exception,GetMagickModule(),
4696 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4697 return(MagickFalse);
4698 }
4699 (void) memcpy(polygon_info[i]->edges,edge_info,
4700 polygon_info[0]->number_edges*sizeof(*edge_info));
4701 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4702 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4703 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4704 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4705 {
4706 edge_info=polygon_info[0]->edges+j;
4707 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4708 edge_info->number_points,sizeof(*edge_info));
4709 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4710 {
4711 (void) ThrowMagickException(exception,GetMagickModule(),
4712 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4713 return(MagickFalse);
4714 }
4715 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4716 edge_info->number_points*sizeof(*edge_info->points));
4717 }
4718 }
4719 return(MagickTrue);
4720}
4721
4722static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4723{
4724 assert(edge < (ssize_t) polygon_info->number_edges);
4725 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4726 polygon_info->edges[edge].points);
4727 polygon_info->number_edges--;
4728 if (edge < (ssize_t) polygon_info->number_edges)
4729 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4730 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4731 return(polygon_info->number_edges);
4732}
4733
4734static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4735 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4736 const ssize_t y,double *stroke_opacity)
4737{
4738 double
4739 alpha,
4740 beta,
4741 distance,
4742 subpath_opacity;
4743
4744 PointInfo
4745 delta;
4746
4747 EdgeInfo
4748 *p;
4749
4750 const PointInfo
4751 *q;
4752
4753 ssize_t
4754 i;
4755
4756 ssize_t
4757 j,
4758 winding_number;
4759
4760 /*
4761 Compute fill & stroke opacity for this (x,y) point.
4762 */
4763 *stroke_opacity=0.0;
4764 subpath_opacity=0.0;
4765 p=polygon_info->edges;
4766 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4767 {
4768 if ((double) y <= (p->bounds.y1-mid-0.5))
4769 break;
4770 if ((double) y > (p->bounds.y2+mid+0.5))
4771 {
4772 p--;
4773 (void) DestroyEdge(polygon_info,j--);
4774 continue;
4775 }
4776 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4777 ((double) x > (p->bounds.x2+mid+0.5)))
4778 continue;
4779 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4780 for ( ; i < (ssize_t) p->number_points; i++)
4781 {
4782 if ((double) y <= (p->points[i-1].y-mid-0.5))
4783 break;
4784 if ((double) y > (p->points[i].y+mid+0.5))
4785 continue;
4786 if (p->scanline != (double) y)
4787 {
4788 p->scanline=(double) y;
4789 p->highwater=(size_t) i;
4790 }
4791 /*
4792 Compute distance between a point and an edge.
4793 */
4794 q=p->points+i-1;
4795 delta.x=(q+1)->x-q->x;
4796 delta.y=(q+1)->y-q->y;
4797 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4798 if (beta <= 0.0)
4799 {
4800 delta.x=(double) x-q->x;
4801 delta.y=(double) y-q->y;
4802 distance=delta.x*delta.x+delta.y*delta.y;
4803 }
4804 else
4805 {
4806 alpha=delta.x*delta.x+delta.y*delta.y;
4807 if (beta >= alpha)
4808 {
4809 delta.x=(double) x-(q+1)->x;
4810 delta.y=(double) y-(q+1)->y;
4811 distance=delta.x*delta.x+delta.y*delta.y;
4812 }
4813 else
4814 {
4815 alpha=MagickSafeReciprocal(alpha);
4816 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4817 distance=alpha*beta*beta;
4818 }
4819 }
4820 /*
4821 Compute stroke & subpath opacity.
4822 */
4823 beta=0.0;
4824 if (p->ghostline == MagickFalse)
4825 {
4826 alpha=mid+0.5;
4827 if ((*stroke_opacity < 1.0) &&
4828 (distance <= ((alpha+0.25)*(alpha+0.25))))
4829 {
4830 alpha=mid-0.5;
4831 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4832 *stroke_opacity=1.0;
4833 else
4834 {
4835 beta=1.0;
4836 if (fabs(distance-1.0) >= MagickEpsilon)
4837 beta=sqrt((double) distance);
4838 alpha=beta-mid-0.5;
4839 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4840 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4841 }
4842 }
4843 }
4844 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4845 continue;
4846 if (distance <= 0.0)
4847 {
4848 subpath_opacity=1.0;
4849 continue;
4850 }
4851 if (distance > 1.0)
4852 continue;
4853 if (fabs(beta) < MagickEpsilon)
4854 {
4855 beta=1.0;
4856 if (fabs(distance-1.0) >= MagickEpsilon)
4857 beta=sqrt(distance);
4858 }
4859 alpha=beta-1.0;
4860 if (subpath_opacity < (alpha*alpha))
4861 subpath_opacity=alpha*alpha;
4862 }
4863 }
4864 /*
4865 Compute fill opacity.
4866 */
4867 if (fill == MagickFalse)
4868 return(0.0);
4869 if (subpath_opacity >= 1.0)
4870 return(1.0);
4871 /*
4872 Determine winding number.
4873 */
4874 winding_number=0;
4875 p=polygon_info->edges;
4876 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4877 {
4878 if ((double) y <= p->bounds.y1)
4879 break;
4880 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4881 continue;
4882 if ((double) x > p->bounds.x2)
4883 {
4884 winding_number+=p->direction != 0 ? 1 : -1;
4885 continue;
4886 }
4887 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4888 for ( ; i < (ssize_t) (p->number_points-1); i++)
4889 if ((double) y <= p->points[i].y)
4890 break;
4891 q=p->points+i-1;
4892 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4893 winding_number+=p->direction != 0 ? 1 : -1;
4894 }
4895 if (fill_rule != NonZeroRule)
4896 {
4897 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4898 return(1.0);
4899 }
4900 else
4901 if (MagickAbsoluteValue(winding_number) != 0)
4902 return(1.0);
4903 return(subpath_opacity);
4904}
4905
4906static MagickBooleanType DrawPolygonPrimitive(Image *image,
4907 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4908{
4909 typedef struct _ExtentInfo
4910 {
4911 ssize_t
4912 x1,
4913 y1,
4914 x2,
4915 y2;
4916 } ExtentInfo;
4917
4918 CacheView
4919 *image_view;
4920
4921 const char
4922 *artifact;
4923
4924 double
4925 mid;
4926
4927 ExceptionInfo
4928 *exception;
4929
4930 ExtentInfo
4931 poly_extent;
4932
4933 MagickBooleanType
4934 fill,
4935 status;
4936
4937 PolygonInfo
4938 **magick_restrict polygon_info;
4939
4940 EdgeInfo
4941 *p;
4942
4943 SegmentInfo
4944 bounds;
4945
4946 size_t
4947 number_threads = 1;
4948
4949 ssize_t
4950 i,
4951 y;
4952
4953 assert(image != (Image *) NULL);
4954 assert(image->signature == MagickCoreSignature);
4955 assert(draw_info != (DrawInfo *) NULL);
4956 assert(draw_info->signature == MagickCoreSignature);
4957 assert(primitive_info != (PrimitiveInfo *) NULL);
4958 if (IsEventLogging() != MagickFalse)
4959 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4960 if (primitive_info->coordinates <= 1)
4961 return(MagickTrue);
4962 /*
4963 Compute bounding box.
4964 */
4965 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4966 if (polygon_info == (PolygonInfo **) NULL)
4967 return(MagickFalse);
4968 if (draw_info->debug != MagickFalse)
4969 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4970 fill=(primitive_info->method == FillToBorderMethod) ||
4971 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4972 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4973 bounds=polygon_info[0]->edges[0].bounds;
4974 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4975 if (IsStringTrue(artifact) != MagickFalse)
4976 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4977 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4978 {
4979 p=polygon_info[0]->edges+i;
4980 if (p->bounds.x1 < bounds.x1)
4981 bounds.x1=p->bounds.x1;
4982 if (p->bounds.y1 < bounds.y1)
4983 bounds.y1=p->bounds.y1;
4984 if (p->bounds.x2 > bounds.x2)
4985 bounds.x2=p->bounds.x2;
4986 if (p->bounds.y2 > bounds.y2)
4987 bounds.y2=p->bounds.y2;
4988 }
4989 bounds.x1-=(mid+1.0);
4990 bounds.y1-=(mid+1.0);
4991 bounds.x2+=(mid+1.0);
4992 bounds.y2+=(mid+1.0);
4993 if ((bounds.x1 >= (double) image->columns) ||
4994 (bounds.y1 >= (double) image->rows) ||
4995 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4996 {
4997 polygon_info=DestroyPolygonTLS(polygon_info);
4998 return(MagickTrue); /* virtual polygon */
4999 }
5000 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5001 (double) image->columns-1.0 : bounds.x1;
5002 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5003 (double) image->rows-1.0 : bounds.y1;
5004 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5005 (double) image->columns-1.0 : bounds.x2;
5006 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5007 (double) image->rows-1.0 : bounds.y2;
5008 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5009 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5010 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5011 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5012 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5013 poly_extent.y1+1,1);
5014 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5015 if (status == MagickFalse)
5016 {
5017 polygon_info=DestroyPolygonTLS(polygon_info);
5018 return(status);
5019 }
5020 status=MagickTrue;
5021 exception=(&image->exception);
5022 image_view=AcquireAuthenticCacheView(image,exception);
5023 if ((primitive_info->coordinates == 1) ||
5024 (polygon_info[0]->number_edges == 0))
5025 {
5026 /*
5027 Draw point.
5028 */
5029#if defined(MAGICKCORE_OPENMP_SUPPORT)
5030 #pragma omp parallel for schedule(static) shared(status) \
5031 num_threads(number_threads)
5032#endif
5033 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5034 {
5035 MagickBooleanType
5036 sync;
5037
5038 PixelPacket
5039 *magick_restrict q;
5040
5041 ssize_t
5042 x;
5043
5044 if (status == MagickFalse)
5045 continue;
5046 x=poly_extent.x1;
5047 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5048 x+1),1,exception);
5049 if (q == (PixelPacket *) NULL)
5050 {
5051 status=MagickFalse;
5052 continue;
5053 }
5054 for ( ; x <= poly_extent.x2; x++)
5055 {
5056 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5057 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5058 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5059 q++;
5060 }
5061 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5062 if (sync == MagickFalse)
5063 status=MagickFalse;
5064 }
5065 image_view=DestroyCacheView(image_view);
5066 polygon_info=DestroyPolygonTLS(polygon_info);
5067 if (draw_info->debug != MagickFalse)
5068 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5069 " end draw-polygon");
5070 return(status);
5071 }
5072 /*
5073 Draw polygon or line.
5074 */
5075 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5076 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5077#if defined(MAGICKCORE_OPENMP_SUPPORT)
5078 #pragma omp parallel for schedule(static) shared(status) \
5079 num_threads(number_threads)
5080#endif
5081 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5082 {
5083 const int
5084 id = GetOpenMPThreadId();
5085
5086 PixelPacket
5087 fill_color,
5088 stroke_color;
5089
5090 PixelPacket
5091 *magick_restrict q;
5092
5093 ssize_t
5094 x;
5095
5096 if (status == MagickFalse)
5097 continue;
5098 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5099 (poly_extent.x2-poly_extent.x1+1),1,exception);
5100 if (q == (PixelPacket *) NULL)
5101 {
5102 status=MagickFalse;
5103 continue;
5104 }
5105 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5106 {
5107 double
5108 fill_opacity,
5109 stroke_opacity;
5110
5111 /*
5112 Fill and/or stroke.
5113 */
5114 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5115 draw_info->fill_rule,x,y,&stroke_opacity);
5116 if (draw_info->stroke_antialias == MagickFalse)
5117 {
5118 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5119 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5120 }
5121 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5122 &fill_color);
5123 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5124 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5125 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5126 (MagickRealType) q->opacity,q);
5127 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5128 &stroke_color);
5129 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5130 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5131 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5132 (MagickRealType) q->opacity,q);
5133 q++;
5134 }
5135 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5136 status=MagickFalse;
5137 }
5138 image_view=DestroyCacheView(image_view);
5139 polygon_info=DestroyPolygonTLS(polygon_info);
5140 if (draw_info->debug != MagickFalse)
5141 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5142 return(status);
5143}
5144␌
5145/*
5146%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5147% %
5148% %
5149% %
5150% D r a w P r i m i t i v e %
5151% %
5152% %
5153% %
5154%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5155%
5156% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5157%
5158% The format of the DrawPrimitive method is:
5159%
5160% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5161% PrimitiveInfo *primitive_info)
5162%
5163% A description of each parameter follows:
5164%
5165% o image: the image.
5166%
5167% o draw_info: the draw info.
5168%
5169% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5170%
5171*/
5172static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5173{
5174 const char
5175 *methods[] =
5176 {
5177 "point",
5178 "replace",
5179 "floodfill",
5180 "filltoborder",
5181 "reset",
5182 "?"
5183 };
5184
5185 PointInfo
5186 p,
5187 q,
5188 point;
5189
5190 ssize_t
5191 i,
5192 x;
5193
5194 ssize_t
5195 coordinates,
5196 y;
5197
5198 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5199 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5200 switch (primitive_info->primitive)
5201 {
5202 case PointPrimitive:
5203 {
5204 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5205 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5206 methods[primitive_info->method]);
5207 return;
5208 }
5209 case ColorPrimitive:
5210 {
5211 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5212 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5213 methods[primitive_info->method]);
5214 return;
5215 }
5216 case MattePrimitive:
5217 {
5218 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5219 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5220 methods[primitive_info->method]);
5221 return;
5222 }
5223 case TextPrimitive:
5224 {
5225 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5226 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5227 return;
5228 }
5229 case ImagePrimitive:
5230 {
5231 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5232 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5233 return;
5234 }
5235 default:
5236 break;
5237 }
5238 coordinates=0;
5239 p=primitive_info[0].point;
5240 q.x=(-1.0);
5241 q.y=(-1.0);
5242 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5243 {
5244 point=primitive_info[i].point;
5245 if (coordinates <= 0)
5246 {
5247 coordinates=(ssize_t) primitive_info[i].coordinates;
5248 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5249 " begin open (%.20g)",(double) coordinates);
5250 p=point;
5251 }
5252 point=primitive_info[i].point;
5253 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5254 (fabs(q.y-point.y) >= MagickEpsilon))
5255 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5256 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5257 else
5258 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5259 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5260 q=point;
5261 coordinates--;
5262 if (coordinates > 0)
5263 continue;
5264 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5265 (fabs(p.y-point.y) >= MagickEpsilon))
5266 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5267 (double) coordinates);
5268 else
5269 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5270 (double) coordinates);
5271 }
5272}
5273
5274MagickExport MagickBooleanType DrawPrimitive(Image *image,
5275 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5276{
5277 CacheView
5278 *image_view;
5279
5280 ExceptionInfo
5281 *exception;
5282
5283 MagickStatusType
5284 status;
5285
5286 ssize_t
5287 i,
5288 x;
5289
5290 ssize_t
5291 y;
5292
5293 if (draw_info->debug != MagickFalse)
5294 {
5295 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5296 " begin draw-primitive");
5297 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5298 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5299 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5300 draw_info->affine.tx,draw_info->affine.ty);
5301 }
5302 exception=(&image->exception);
5303 status=MagickTrue;
5304 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5305 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5306 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5307 status=SetImageColorspace(image,sRGBColorspace);
5308 if (draw_info->compliance == SVGCompliance)
5309 {
5310 status&=SetImageClipMask(image,draw_info->clipping_mask);
5311 status&=SetImageMask(image,draw_info->composite_mask);
5312 }
5313 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5314 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5315 image_view=AcquireAuthenticCacheView(image,exception);
5316 switch (primitive_info->primitive)
5317 {
5318 case ColorPrimitive:
5319 {
5320 switch (primitive_info->method)
5321 {
5322 case PointMethod:
5323 default:
5324 {
5325 PixelPacket
5326 *q;
5327
5328 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5329 if (q == (PixelPacket *) NULL)
5330 break;
5331 (void) GetFillColor(draw_info,x,y,q);
5332 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5333 break;
5334 }
5335 case ReplaceMethod:
5336 {
5337 PixelPacket
5338 target;
5339
5340 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5341 for (y=0; y < (ssize_t) image->rows; y++)
5342 {
5343 PixelPacket
5344 *magick_restrict q;
5345
5346 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5347 exception);
5348 if (q == (PixelPacket *) NULL)
5349 break;
5350 for (x=0; x < (ssize_t) image->columns; x++)
5351 {
5352 if (IsColorSimilar(image,q,&target) == MagickFalse)
5353 {
5354 q++;
5355 continue;
5356 }
5357 (void) GetFillColor(draw_info,x,y,q);
5358 q++;
5359 }
5360 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5361 if (status == MagickFalse)
5362 break;
5363 }
5364 break;
5365 }
5366 case FloodfillMethod:
5367 case FillToBorderMethod:
5368 {
5369 MagickPixelPacket
5370 target;
5371
5372 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5373 if (primitive_info->method == FillToBorderMethod)
5374 {
5375 target.red=(MagickRealType) draw_info->border_color.red;
5376 target.green=(MagickRealType) draw_info->border_color.green;
5377 target.blue=(MagickRealType) draw_info->border_color.blue;
5378 }
5379 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5380 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5381 MagickTrue);
5382 break;
5383 }
5384 case ResetMethod:
5385 {
5386 for (y=0; y < (ssize_t) image->rows; y++)
5387 {
5388 PixelPacket
5389 *magick_restrict q;
5390
5391 ssize_t
5392 x;
5393
5394 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5395 exception);
5396 if (q == (PixelPacket *) NULL)
5397 break;
5398 for (x=0; x < (ssize_t) image->columns; x++)
5399 {
5400 (void) GetFillColor(draw_info,x,y,q);
5401 q++;
5402 }
5403 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5404 if (status == MagickFalse)
5405 break;
5406 }
5407 break;
5408 }
5409 }
5410 break;
5411 }
5412 case MattePrimitive:
5413 {
5414 if (image->matte == MagickFalse)
5415 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5416 switch (primitive_info->method)
5417 {
5418 case PointMethod:
5419 default:
5420 {
5421 PixelPacket
5422 pixel;
5423
5424 PixelPacket
5425 *q;
5426
5427 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5428 if (q == (PixelPacket *) NULL)
5429 break;
5430 (void) GetFillColor(draw_info,x,y,&pixel);
5431 SetPixelOpacity(q,pixel.opacity);
5432 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5433 break;
5434 }
5435 case ReplaceMethod:
5436 {
5437 PixelPacket
5438 pixel,
5439 target;
5440
5441 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5442 for (y=0; y < (ssize_t) image->rows; y++)
5443 {
5444 PixelPacket
5445 *magick_restrict q;
5446
5447 ssize_t
5448 x;
5449
5450 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5451 exception);
5452 if (q == (PixelPacket *) NULL)
5453 break;
5454 for (x=0; x < (ssize_t) image->columns; x++)
5455 {
5456 if (IsColorSimilar(image,q,&target) == MagickFalse)
5457 {
5458 q++;
5459 continue;
5460 }
5461 (void) GetFillColor(draw_info,x,y,&pixel);
5462 SetPixelOpacity(q,pixel.opacity);
5463 q++;
5464 }
5465 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5466 if (status == MagickFalse)
5467 break;
5468 }
5469 break;
5470 }
5471 case FloodfillMethod:
5472 case FillToBorderMethod:
5473 {
5474 MagickPixelPacket
5475 target;
5476
5477 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5478 if (primitive_info->method == FillToBorderMethod)
5479 {
5480 target.red=(MagickRealType) draw_info->border_color.red;
5481 target.green=(MagickRealType) draw_info->border_color.green;
5482 target.blue=(MagickRealType) draw_info->border_color.blue;
5483 }
5484 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5485 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5486 MagickTrue);
5487 break;
5488 }
5489 case ResetMethod:
5490 {
5491 PixelPacket
5492 pixel;
5493
5494 for (y=0; y < (ssize_t) image->rows; y++)
5495 {
5496 PixelPacket
5497 *magick_restrict q;
5498
5499 ssize_t
5500 x;
5501
5502 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5503 exception);
5504 if (q == (PixelPacket *) NULL)
5505 break;
5506 for (x=0; x < (ssize_t) image->columns; x++)
5507 {
5508 (void) GetFillColor(draw_info,x,y,&pixel);
5509 SetPixelOpacity(q,pixel.opacity);
5510 q++;
5511 }
5512 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5513 if (status == MagickFalse)
5514 break;
5515 }
5516 break;
5517 }
5518 }
5519 break;
5520 }
5521 case ImagePrimitive:
5522 {
5523 AffineMatrix
5524 affine;
5525
5526 char
5527 composite_geometry[MaxTextExtent];
5528
5529 Image
5530 *composite_image,
5531 *composite_images;
5532
5533 ImageInfo
5534 *clone_info;
5535
5536 RectangleInfo
5537 geometry;
5538
5539 ssize_t
5540 x1,
5541 y1;
5542
5543 if (primitive_info->text == (char *) NULL)
5544 break;
5545 clone_info=AcquireImageInfo();
5546 composite_images=(Image *) NULL;
5547 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5548 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5549 &image->exception);
5550 else
5551 if (*primitive_info->text != '\0')
5552 {
5553 /*
5554 Read composite image.
5555 */
5556 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5557 MagickPathExtent);
5558 (void) SetImageInfo(clone_info,1,exception);
5559 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5560 MagickPathExtent);
5561 if (clone_info->size != (char *) NULL)
5562 clone_info->size=DestroyString(clone_info->size);
5563 if (clone_info->extract != (char *) NULL)
5564 clone_info->extract=DestroyString(clone_info->extract);
5565 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5566 (LocaleCompare(clone_info->magick,"http") != 0) &&
5567 (LocaleCompare(clone_info->magick,"https") != 0) &&
5568 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5569 (LocaleCompare(clone_info->magick,"vid") != 0))
5570 composite_images=ReadImage(clone_info,exception);
5571 else
5572 (void) ThrowMagickException(exception,GetMagickModule(),
5573 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5574 }
5575 clone_info=DestroyImageInfo(clone_info);
5576 if (composite_images == (Image *) NULL)
5577 {
5578 status=0;
5579 break;
5580 }
5581 composite_image=RemoveFirstImageFromList(&composite_images);
5582 composite_images=DestroyImageList(composite_images);
5583 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5584 NULL,(void *) NULL);
5585 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5586 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5587 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5588 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5589 {
5590 char
5591 geometry[MaxTextExtent];
5592
5593 /*
5594 Resize image.
5595 */
5596 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5597 primitive_info[1].point.x,primitive_info[1].point.y);
5598 composite_image->filter=image->filter;
5599 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5600 }
5601 if (composite_image->matte == MagickFalse)
5602 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5603 if (draw_info->opacity != OpaqueOpacity)
5604 status&=SetImageOpacity(composite_image,draw_info->opacity);
5605 SetGeometry(image,&geometry);
5606 image->gravity=draw_info->gravity;
5607 geometry.x=x;
5608 geometry.y=y;
5609 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5610 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5611 composite_image->rows,(double) geometry.x,(double) geometry.y);
5612 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5613 &image->exception);
5614 affine=draw_info->affine;
5615 affine.tx=(double) geometry.x;
5616 affine.ty=(double) geometry.y;
5617 composite_image->interpolate=image->interpolate;
5618 if ((draw_info->compose == OverCompositeOp) ||
5619 (draw_info->compose == SrcOverCompositeOp))
5620 status&=DrawAffineImage(image,composite_image,&affine);
5621 else
5622 status&=CompositeImage(image,draw_info->compose,composite_image,
5623 geometry.x,geometry.y);
5624 composite_image=DestroyImage(composite_image);
5625 break;
5626 }
5627 case PointPrimitive:
5628 {
5629 PixelPacket
5630 fill_color;
5631
5632 PixelPacket
5633 *q;
5634
5635 if ((y < 0) || (y >= (ssize_t) image->rows))
5636 break;
5637 if ((x < 0) || (x >= (ssize_t) image->columns))
5638 break;
5639 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5640 if (q == (PixelPacket *) NULL)
5641 break;
5642 (void) GetFillColor(draw_info,x,y,&fill_color);
5643 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5644 (MagickRealType) q->opacity,q);
5645 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5646 break;
5647 }
5648 case TextPrimitive:
5649 {
5650 char
5651 geometry[MaxTextExtent];
5652
5653 DrawInfo
5654 *clone_info;
5655
5656 if (primitive_info->text == (char *) NULL)
5657 break;
5658 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5659 (void) CloneString(&clone_info->text,primitive_info->text);
5660 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5661 primitive_info->point.x,primitive_info->point.y);
5662 (void) CloneString(&clone_info->geometry,geometry);
5663 status&=AnnotateImage(image,clone_info);
5664 clone_info=DestroyDrawInfo(clone_info);
5665 break;
5666 }
5667 default:
5668 {
5669 double
5670 mid,
5671 scale;
5672
5673 DrawInfo
5674 *clone_info;
5675
5676 if (IsEventLogging() != MagickFalse)
5677 LogPrimitiveInfo(primitive_info);
5678 scale=ExpandAffine(&draw_info->affine);
5679 if ((draw_info->dash_pattern != (double *) NULL) &&
5680 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5681 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5682 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5683 {
5684 /*
5685 Draw dash polygon.
5686 */
5687 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5688 clone_info->stroke_width=0.0;
5689 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5690 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5691 clone_info=DestroyDrawInfo(clone_info);
5692 if (status != MagickFalse)
5693 status&=DrawDashPolygon(draw_info,primitive_info,image);
5694 break;
5695 }
5696 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5697 if ((mid > 1.0) &&
5698 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5699 (draw_info->stroke_pattern != (Image *) NULL)))
5700 {
5701 double
5702 x,
5703 y;
5704
5705 MagickBooleanType
5706 closed_path;
5707
5708 /*
5709 Draw strokes while respecting line cap/join attributes.
5710 */
5711 closed_path=primitive_info[0].closed_subpath;
5712 i=(ssize_t) primitive_info[0].coordinates;
5713 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5714 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5715 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5716 closed_path=MagickTrue;
5717 if ((((draw_info->linecap == RoundCap) ||
5718 (closed_path != MagickFalse)) &&
5719 (draw_info->linejoin == RoundJoin)) ||
5720 (primitive_info[i].primitive != UndefinedPrimitive))
5721 {
5722 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5723 break;
5724 }
5725 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5726 clone_info->stroke_width=0.0;
5727 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5728 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5729 clone_info=DestroyDrawInfo(clone_info);
5730 if (status != MagickFalse)
5731 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5732 break;
5733 }
5734 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5735 break;
5736 }
5737 }
5738 image_view=DestroyCacheView(image_view);
5739 if (draw_info->compliance == SVGCompliance)
5740 {
5741 status&=SetImageClipMask(image,(Image *) NULL);
5742 status&=SetImageMask(image,(Image *) NULL);
5743 }
5744 if (draw_info->debug != MagickFalse)
5745 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5746 return(status != 0 ? MagickTrue : MagickFalse);
5747}
5748␌
5749/*
5750%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5751% %
5752% %
5753% %
5754+ D r a w S t r o k e P o l y g o n %
5755% %
5756% %
5757% %
5758%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5759%
5760% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5761% the image while respecting the line cap and join attributes.
5762%
5763% The format of the DrawStrokePolygon method is:
5764%
5765% MagickBooleanType DrawStrokePolygon(Image *image,
5766% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5767%
5768% A description of each parameter follows:
5769%
5770% o image: the image.
5771%
5772% o draw_info: the draw info.
5773%
5774% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5775%
5776%
5777*/
5778
5779static MagickBooleanType DrawRoundLinecap(Image *image,
5780 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5781{
5782 PrimitiveInfo
5783 linecap[5];
5784
5785 ssize_t
5786 i;
5787
5788 for (i=0; i < 4; i++)
5789 linecap[i]=(*primitive_info);
5790 linecap[0].coordinates=4;
5791 linecap[1].point.x+=2.0*MagickEpsilon;
5792 linecap[2].point.x+=2.0*MagickEpsilon;
5793 linecap[2].point.y+=2.0*MagickEpsilon;
5794 linecap[3].point.y+=2.0*MagickEpsilon;
5795 linecap[4].primitive=UndefinedPrimitive;
5796 return(DrawPolygonPrimitive(image,draw_info,linecap));
5797}
5798
5799static MagickBooleanType DrawStrokePolygon(Image *image,
5800 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5801{
5802 DrawInfo
5803 *clone_info;
5804
5805 MagickBooleanType
5806 closed_path;
5807
5808 MagickStatusType
5809 status;
5810
5811 PrimitiveInfo
5812 *stroke_polygon;
5813
5814 const PrimitiveInfo
5815 *p,
5816 *q;
5817
5818 /*
5819 Draw stroked polygon.
5820 */
5821 if (draw_info->debug != MagickFalse)
5822 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5823 " begin draw-stroke-polygon");
5824 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5825 clone_info->fill=draw_info->stroke;
5826 if (clone_info->fill_pattern != (Image *) NULL)
5827 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5828 if (clone_info->stroke_pattern != (Image *) NULL)
5829 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5830 MagickTrue,&clone_info->stroke_pattern->exception);
5831 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5832 clone_info->stroke_width=0.0;
5833 clone_info->fill_rule=NonZeroRule;
5834 status=MagickTrue;
5835 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5836 {
5837 if (p->coordinates == 1)
5838 continue;
5839 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5840 if (stroke_polygon == (PrimitiveInfo *) NULL)
5841 {
5842 status=0;
5843 break;
5844 }
5845 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5846 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5847 if (status == 0)
5848 break;
5849 q=p+p->coordinates-1;
5850 closed_path=p->closed_subpath;
5851 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5852 {
5853 status&=DrawRoundLinecap(image,draw_info,p);
5854 status&=DrawRoundLinecap(image,draw_info,q);
5855 }
5856 }
5857 clone_info=DestroyDrawInfo(clone_info);
5858 if (draw_info->debug != MagickFalse)
5859 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5860 " end draw-stroke-polygon");
5861 return(status != 0 ? MagickTrue : MagickFalse);
5862}
5863␌
5864/*
5865%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5866% %
5867% %
5868% %
5869% G e t A f f i n e M a t r i x %
5870% %
5871% %
5872% %
5873%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5874%
5875% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5876% matrix.
5877%
5878% The format of the GetAffineMatrix method is:
5879%
5880% void GetAffineMatrix(AffineMatrix *affine_matrix)
5881%
5882% A description of each parameter follows:
5883%
5884% o affine_matrix: the affine matrix.
5885%
5886*/
5887MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5888{
5889 assert(affine_matrix != (AffineMatrix *) NULL);
5890 if (IsEventLogging() != MagickFalse)
5891 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5892 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5893 affine_matrix->sx=1.0;
5894 affine_matrix->sy=1.0;
5895}
5896␌
5897/*
5898%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5899% %
5900% %
5901% %
5902+ G e t D r a w I n f o %
5903% %
5904% %
5905% %
5906%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5907%
5908% GetDrawInfo() initializes draw_info to default values from image_info.
5909%
5910% The format of the GetDrawInfo method is:
5911%
5912% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5913%
5914% A description of each parameter follows:
5915%
5916% o image_info: the image info..
5917%
5918% o draw_info: the draw info.
5919%
5920*/
5921MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5922{
5923 char
5924 *next_token;
5925
5926 const char
5927 *option;
5928
5929 ExceptionInfo
5930 *exception;
5931
5932 /*
5933 Initialize draw attributes.
5934 */
5935 assert(draw_info != (DrawInfo *) NULL);
5936 if (IsEventLogging() != MagickFalse)
5937 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5938 (void) memset(draw_info,0,sizeof(*draw_info));
5939 draw_info->image_info=CloneImageInfo(image_info);
5940 GetAffineMatrix(&draw_info->affine);
5941 exception=AcquireExceptionInfo();
5942 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5943 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5944 draw_info->stroke_antialias=draw_info->image_info->antialias;
5945 draw_info->stroke_width=1.0;
5946 draw_info->fill_rule=EvenOddRule;
5947 draw_info->opacity=OpaqueOpacity;
5948 draw_info->fill_opacity=OpaqueOpacity;
5949 draw_info->stroke_opacity=OpaqueOpacity;
5950 draw_info->linecap=ButtCap;
5951 draw_info->linejoin=MiterJoin;
5952 draw_info->miterlimit=10;
5953 draw_info->decorate=NoDecoration;
5954 if (draw_info->image_info->font != (char *) NULL)
5955 draw_info->font=AcquireString(draw_info->image_info->font);
5956 if (draw_info->image_info->density != (char *) NULL)
5957 draw_info->density=AcquireString(draw_info->image_info->density);
5958 draw_info->text_antialias=draw_info->image_info->antialias;
5959 draw_info->pointsize=12.0;
5960 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5961 draw_info->pointsize=draw_info->image_info->pointsize;
5962 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5963 draw_info->border_color=draw_info->image_info->border_color;
5964 draw_info->compose=OverCompositeOp;
5965 if (draw_info->image_info->server_name != (char *) NULL)
5966 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5967 draw_info->render=MagickTrue;
5968 draw_info->clip_path=MagickFalse;
5969 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5970 MagickTrue : MagickFalse;
5971 option=GetImageOption(draw_info->image_info,"direction");
5972 if (option != (const char *) NULL)
5973 draw_info->direction=(DirectionType) ParseCommandOption(
5974 MagickDirectionOptions,MagickFalse,option);
5975 else
5976 draw_info->direction=UndefinedDirection;
5977 option=GetImageOption(draw_info->image_info,"encoding");
5978 if (option != (const char *) NULL)
5979 (void) CloneString(&draw_info->encoding,option);
5980 option=GetImageOption(draw_info->image_info,"family");
5981 if (option != (const char *) NULL)
5982 (void) CloneString(&draw_info->family,option);
5983 option=GetImageOption(draw_info->image_info,"fill");
5984 if (option != (const char *) NULL)
5985 (void) QueryColorDatabase(option,&draw_info->fill,exception);
5986 option=GetImageOption(draw_info->image_info,"gravity");
5987 if (option != (const char *) NULL)
5988 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5989 MagickFalse,option);
5990 option=GetImageOption(draw_info->image_info,"interline-spacing");
5991 if (option != (const char *) NULL)
5992 draw_info->interline_spacing=GetDrawValue(option,&next_token);
5993 option=GetImageOption(draw_info->image_info,"interword-spacing");
5994 if (option != (const char *) NULL)
5995 draw_info->interword_spacing=GetDrawValue(option,&next_token);
5996 option=GetImageOption(draw_info->image_info,"kerning");
5997 if (option != (const char *) NULL)
5998 draw_info->kerning=GetDrawValue(option,&next_token);
5999 option=GetImageOption(draw_info->image_info,"stroke");
6000 if (option != (const char *) NULL)
6001 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6002 option=GetImageOption(draw_info->image_info,"strokewidth");
6003 if (option != (const char *) NULL)
6004 draw_info->stroke_width=GetDrawValue(option,&next_token);
6005 option=GetImageOption(draw_info->image_info,"style");
6006 if (option != (const char *) NULL)
6007 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6008 MagickFalse,option);
6009 option=GetImageOption(draw_info->image_info,"undercolor");
6010 if (option != (const char *) NULL)
6011 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6012 option=GetImageOption(draw_info->image_info,"weight");
6013 if (option != (const char *) NULL)
6014 {
6015 ssize_t
6016 weight;
6017
6018 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6019 if (weight == -1)
6020 weight=(ssize_t) StringToUnsignedLong(option);
6021 draw_info->weight=(size_t) weight;
6022 }
6023 exception=DestroyExceptionInfo(exception);
6024 draw_info->signature=MagickCoreSignature;
6025}
6026␌
6027/*
6028%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6029% %
6030% %
6031% %
6032+ P e r m u t a t e %
6033% %
6034% %
6035% %
6036%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6037%
6038% Permutate() returns the permutation of the (n,k).
6039%
6040% The format of the Permutate method is:
6041%
6042% void Permutate(ssize_t n,ssize_t k)
6043%
6044% A description of each parameter follows:
6045%
6046% o n:
6047%
6048% o k:
6049%
6050%
6051*/
6052static inline double Permutate(const ssize_t n,const ssize_t k)
6053{
6054 double
6055 r;
6056
6057 ssize_t
6058 i;
6059
6060 r=1.0;
6061 for (i=k+1; i <= n; i++)
6062 r*=i;
6063 for (i=1; i <= (n-k); i++)
6064 r/=i;
6065 return(r);
6066}
6067␌
6068/*
6069%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6070% %
6071% %
6072% %
6073+ T r a c e P r i m i t i v e %
6074% %
6075% %
6076% %
6077%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6078%
6079% TracePrimitive is a collection of methods for generating graphic
6080% primitives such as arcs, ellipses, paths, etc.
6081%
6082*/
6083
6084static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6085 const PointInfo end,const PointInfo degrees)
6086{
6087 PointInfo
6088 center,
6089 radius;
6090
6091 center.x=0.5*(end.x+start.x);
6092 center.y=0.5*(end.y+start.y);
6093 radius.x=fabs(center.x-start.x);
6094 radius.y=fabs(center.y-start.y);
6095 return(TraceEllipse(mvg_info,center,radius,degrees));
6096}
6097
6098static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6099 const PointInfo end,const PointInfo arc,const double angle,
6100 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6101{
6102 double
6103 alpha,
6104 beta,
6105 delta,
6106 factor,
6107 gamma,
6108 theta;
6109
6110 MagickStatusType
6111 status;
6112
6113 PointInfo
6114 center,
6115 points[3],
6116 radii;
6117
6118 double
6119 cosine,
6120 sine;
6121
6122 PrimitiveInfo
6123 *primitive_info;
6124
6125 PrimitiveInfo
6126 *p;
6127
6128 ssize_t
6129 i;
6130
6131 size_t
6132 arc_segments;
6133
6134 ssize_t
6135 offset;
6136
6137 offset=mvg_info->offset;
6138 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6139 primitive_info->coordinates=0;
6140 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6141 (fabs(start.y-end.y) < MagickEpsilon))
6142 return(TracePoint(primitive_info,end));
6143 radii.x=fabs(arc.x);
6144 radii.y=fabs(arc.y);
6145 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6146 return(TraceLine(primitive_info,start,end));
6147 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6148 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6149 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6150 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6151 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6152 (radii.y*radii.y);
6153 if (delta < MagickEpsilon)
6154 return(TraceLine(primitive_info,start,end));
6155 if (delta > 1.0)
6156 {
6157 radii.x*=sqrt((double) delta);
6158 radii.y*=sqrt((double) delta);
6159 }
6160 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6161 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6162 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6163 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6164 alpha=points[1].x-points[0].x;
6165 beta=points[1].y-points[0].y;
6166 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6167 return(TraceLine(primitive_info,start,end));
6168 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6169 if (factor <= 0.0)
6170 factor=0.0;
6171 else
6172 {
6173 factor=sqrt((double) factor);
6174 if (sweep == large_arc)
6175 factor=(-factor);
6176 }
6177 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6178 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6179 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6180 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6181 if ((theta < 0.0) && (sweep != MagickFalse))
6182 theta+=2.0*MagickPI;
6183 else
6184 if ((theta > 0.0) && (sweep == MagickFalse))
6185 theta-=2.0*MagickPI;
6186 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6187 MagickPI+MagickEpsilon)))));
6188 p=primitive_info;
6189 status=MagickTrue;
6190 for (i=0; i < (ssize_t) arc_segments; i++)
6191 {
6192 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6193 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6194 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6195 sin(fmod((double) beta,DegreesToRadians(360.0)));
6196 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6197 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6198 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6199 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6200 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6201 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6202 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6203 theta/arc_segments),DegreesToRadians(360.0))));
6204 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6205 theta/arc_segments),DegreesToRadians(360.0))));
6206 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6207 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6208 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6209 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6210 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6211 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6212 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6213 points[0].y);
6214 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6215 points[0].y);
6216 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6217 points[1].y);
6218 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6219 points[1].y);
6220 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6221 points[2].y);
6222 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6223 points[2].y);
6224 if (i == (ssize_t) (arc_segments-1))
6225 (p+3)->point=end;
6226 status&=TraceBezier(mvg_info,4);
6227 if (status == 0)
6228 break;
6229 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6230 mvg_info->offset+=p->coordinates;
6231 p+=(ptrdiff_t) p->coordinates;
6232 }
6233 if (status == 0)
6234 return(MagickFalse);
6235 mvg_info->offset=offset;
6236 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6237 primitive_info->coordinates=(size_t) (p-primitive_info);
6238 primitive_info->closed_subpath=MagickFalse;
6239 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6240 {
6241 p->primitive=primitive_info->primitive;
6242 p--;
6243 }
6244 return(MagickTrue);
6245}
6246
6247static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6248 const size_t number_coordinates)
6249{
6250 double
6251 alpha,
6252 *coefficients,
6253 weight;
6254
6255 PointInfo
6256 end,
6257 point,
6258 *points;
6259
6260 PrimitiveInfo
6261 *primitive_info;
6262
6263 PrimitiveInfo
6264 *p;
6265
6266 ssize_t
6267 i,
6268 j;
6269
6270 size_t
6271 control_points,
6272 quantum;
6273
6274 /*
6275 Allocate coefficients.
6276 */
6277 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6278 quantum=number_coordinates;
6279 for (i=0; i < (ssize_t) number_coordinates; i++)
6280 {
6281 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6282 {
6283 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6284 if (alpha > (double) GetMaxMemoryRequest())
6285 {
6286 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6287 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6288 return(MagickFalse);
6289 }
6290 if (alpha > (double) quantum)
6291 quantum=(size_t) alpha;
6292 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6293 if (alpha > (double) quantum)
6294 quantum=(size_t) alpha;
6295 }
6296 }
6297 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6298 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6299 if (quantum > (double) GetMaxMemoryRequest())
6300 {
6301 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6302 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6303 return(MagickFalse);
6304 }
6305 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6306 sizeof(*coefficients));
6307 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6308 sizeof(*points));
6309 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6310 {
6311 if (points != (PointInfo *) NULL)
6312 points=(PointInfo *) RelinquishMagickMemory(points);
6313 if (coefficients != (double *) NULL)
6314 coefficients=(double *) RelinquishMagickMemory(coefficients);
6315 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6316 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6317 return(MagickFalse);
6318 }
6319 control_points=quantum*number_coordinates;
6320 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6321 {
6322 points=(PointInfo *) RelinquishMagickMemory(points);
6323 coefficients=(double *) RelinquishMagickMemory(coefficients);
6324 return(MagickFalse);
6325 }
6326 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6327 /*
6328 Compute bezier points.
6329 */
6330 end=primitive_info[number_coordinates-1].point;
6331 for (i=0; i < (ssize_t) number_coordinates; i++)
6332 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6333 weight=0.0;
6334 for (i=0; i < (ssize_t) control_points; i++)
6335 {
6336 p=primitive_info;
6337 point.x=0.0;
6338 point.y=0.0;
6339 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6340 for (j=0; j < (ssize_t) number_coordinates; j++)
6341 {
6342 point.x+=alpha*coefficients[j]*p->point.x;
6343 point.y+=alpha*coefficients[j]*p->point.y;
6344 alpha*=weight/(1.0-weight);
6345 p++;
6346 }
6347 points[i]=point;
6348 weight+=1.0/control_points;
6349 }
6350 /*
6351 Bezier curves are just short segmented polys.
6352 */
6353 p=primitive_info;
6354 for (i=0; i < (ssize_t) control_points; i++)
6355 {
6356 if (TracePoint(p,points[i]) == MagickFalse)
6357 {
6358 points=(PointInfo *) RelinquishMagickMemory(points);
6359 coefficients=(double *) RelinquishMagickMemory(coefficients);
6360 return(MagickFalse);
6361 }
6362 p+=(ptrdiff_t) p->coordinates;
6363 }
6364 if (TracePoint(p,end) == MagickFalse)
6365 {
6366 points=(PointInfo *) RelinquishMagickMemory(points);
6367 coefficients=(double *) RelinquishMagickMemory(coefficients);
6368 return(MagickFalse);
6369 }
6370 p+=(ptrdiff_t) p->coordinates;
6371 primitive_info->coordinates=(size_t) (p-primitive_info);
6372 primitive_info->closed_subpath=MagickFalse;
6373 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6374 {
6375 p->primitive=primitive_info->primitive;
6376 p--;
6377 }
6378 points=(PointInfo *) RelinquishMagickMemory(points);
6379 coefficients=(double *) RelinquishMagickMemory(coefficients);
6380 return(MagickTrue);
6381}
6382
6383static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6384 const PointInfo end)
6385{
6386 double
6387 alpha,
6388 beta,
6389 radius;
6390
6391 PointInfo
6392 offset,
6393 degrees;
6394
6395 alpha=end.x-start.x;
6396 beta=end.y-start.y;
6397 radius=hypot((double) alpha,(double) beta);
6398 offset.x=(double) radius;
6399 offset.y=(double) radius;
6400 degrees.x=0.0;
6401 degrees.y=360.0;
6402 return(TraceEllipse(mvg_info,start,offset,degrees));
6403}
6404
6405static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6406 const PointInfo radii,const PointInfo arc)
6407{
6408 double
6409 coordinates,
6410 delta,
6411 step,
6412 x,
6413 y;
6414
6415 PointInfo
6416 angle,
6417 point;
6418
6419 PrimitiveInfo
6420 *primitive_info;
6421
6422 PrimitiveInfo
6423 *p;
6424
6425 ssize_t
6426 i;
6427
6428 /*
6429 Ellipses are just short segmented polys.
6430 */
6431 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6432 primitive_info->coordinates=0;
6433 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6434 return(MagickTrue);
6435 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6436 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6437 angle.x=DegreesToRadians(arc.x);
6438 y=arc.y;
6439 while (y < arc.x)
6440 y+=360.0;
6441 angle.y=DegreesToRadians(y);
6442 coordinates=ceil((angle.y-angle.x)/step+1.0);
6443 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6444 return(MagickFalse);
6445 i=0;
6446 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6447 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6448 {
6449 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6450 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6451 if (i++ >= (ssize_t) coordinates)
6452 break;
6453 if (TracePoint(p,point) == MagickFalse)
6454 return(MagickFalse);
6455 p+=(ptrdiff_t) p->coordinates;
6456 }
6457 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6458 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6459 if (TracePoint(p,point) == MagickFalse)
6460 return(MagickFalse);
6461 p+=(ptrdiff_t) p->coordinates;
6462 primitive_info->coordinates=(size_t) (p-primitive_info);
6463 primitive_info->closed_subpath=MagickFalse;
6464 x=fabs(primitive_info[0].point.x-
6465 primitive_info[primitive_info->coordinates-1].point.x);
6466 y=fabs(primitive_info[0].point.y-
6467 primitive_info[primitive_info->coordinates-1].point.y);
6468 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6469 primitive_info->closed_subpath=MagickTrue;
6470 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6471 {
6472 p->primitive=primitive_info->primitive;
6473 p--;
6474 }
6475 return(MagickTrue);
6476}
6477
6478static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6479 const PointInfo start,const PointInfo end)
6480{
6481 if (TracePoint(primitive_info,start) == MagickFalse)
6482 return(MagickFalse);
6483 if (TracePoint(primitive_info+1,end) == MagickFalse)
6484 return(MagickFalse);
6485 (primitive_info+1)->primitive=primitive_info->primitive;
6486 primitive_info->coordinates=2;
6487 primitive_info->closed_subpath=MagickFalse;
6488 return(MagickTrue);
6489}
6490
6491static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6492{
6493 char
6494 *next_token,
6495 token[MaxTextExtent] = "";
6496
6497 const char
6498 *p;
6499
6500 double
6501 x,
6502 y;
6503
6504 int
6505 attribute,
6506 last_attribute;
6507
6508 MagickStatusType
6509 status;
6510
6511 PointInfo
6512 end = {0.0, 0.0},
6513 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6514 point = {0.0, 0.0},
6515 start = {0.0, 0.0};
6516
6517 PrimitiveInfo
6518 *primitive_info;
6519
6520 PrimitiveType
6521 primitive_type;
6522
6523 PrimitiveInfo
6524 *q;
6525
6526 ssize_t
6527 i;
6528
6529 size_t
6530 number_coordinates,
6531 z_count;
6532
6533 ssize_t
6534 subpath_offset;
6535
6536 subpath_offset=mvg_info->offset;
6537 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6538 status=MagickTrue;
6539 attribute=0;
6540 number_coordinates=0;
6541 z_count=0;
6542 *token='\0';
6543 primitive_type=primitive_info->primitive;
6544 q=primitive_info;
6545 for (p=path; *p != '\0'; )
6546 {
6547 if (status == MagickFalse)
6548 break;
6549 while (isspace((int) ((unsigned char) *p)) != 0)
6550 p++;
6551 if (*p == '\0')
6552 break;
6553 last_attribute=attribute;
6554 attribute=(int) (*p++);
6555 switch (attribute)
6556 {
6557 case 'a':
6558 case 'A':
6559 {
6560 double
6561 angle = 0.0;
6562
6563 MagickBooleanType
6564 large_arc = MagickFalse,
6565 sweep = MagickFalse;
6566
6567 PointInfo
6568 arc = {0.0, 0.0};
6569
6570 /*
6571 Elliptical arc.
6572 */
6573 do
6574 {
6575 (void) GetNextToken(p,&p,MaxTextExtent,token);
6576 if (*token == ',')
6577 (void) GetNextToken(p,&p,MaxTextExtent,token);
6578 arc.x=GetDrawValue(token,&next_token);
6579 if (token == next_token)
6580 ThrowPointExpectedException(image,token);
6581 (void) GetNextToken(p,&p,MaxTextExtent,token);
6582 if (*token == ',')
6583 (void) GetNextToken(p,&p,MaxTextExtent,token);
6584 arc.y=GetDrawValue(token,&next_token);
6585 if (token == next_token)
6586 ThrowPointExpectedException(image,token);
6587 (void) GetNextToken(p,&p,MaxTextExtent,token);
6588 if (*token == ',')
6589 (void) GetNextToken(p,&p,MaxTextExtent,token);
6590 angle=GetDrawValue(token,&next_token);
6591 if (token == next_token)
6592 ThrowPointExpectedException(image,token);
6593 (void) GetNextToken(p,&p,MaxTextExtent,token);
6594 if (*token == ',')
6595 (void) GetNextToken(p,&p,MaxTextExtent,token);
6596 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6597 (void) GetNextToken(p,&p,MaxTextExtent,token);
6598 if (*token == ',')
6599 (void) GetNextToken(p,&p,MaxTextExtent,token);
6600 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6601 if (*token == ',')
6602 (void) GetNextToken(p,&p,MaxTextExtent,token);
6603 (void) GetNextToken(p,&p,MaxTextExtent,token);
6604 if (*token == ',')
6605 (void) GetNextToken(p,&p,MaxTextExtent,token);
6606 x=GetDrawValue(token,&next_token);
6607 if (token == next_token)
6608 ThrowPointExpectedException(image,token);
6609 (void) GetNextToken(p,&p,MaxTextExtent,token);
6610 if (*token == ',')
6611 (void) GetNextToken(p,&p,MaxTextExtent,token);
6612 y=GetDrawValue(token,&next_token);
6613 if (token == next_token)
6614 ThrowPointExpectedException(image,token);
6615 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6616 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6617 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6618 q=(*mvg_info->primitive_info)+mvg_info->offset;
6619 mvg_info->offset+=q->coordinates;
6620 q+=(ptrdiff_t) q->coordinates;
6621 point=end;
6622 while (isspace((int) ((unsigned char) *p)) != 0)
6623 p++;
6624 if (*p == ',')
6625 p++;
6626 } while (IsPoint(p) != MagickFalse);
6627 break;
6628 }
6629 case 'c':
6630 case 'C':
6631 {
6632 /*
6633 Cubic Bézier curve.
6634 */
6635 do
6636 {
6637 points[0]=point;
6638 for (i=1; i < 4; i++)
6639 {
6640 (void) GetNextToken(p,&p,MaxTextExtent,token);
6641 if (*token == ',')
6642 (void) GetNextToken(p,&p,MaxTextExtent,token);
6643 x=GetDrawValue(token,&next_token);
6644 if (token == next_token)
6645 ThrowPointExpectedException(image,token);
6646 (void) GetNextToken(p,&p,MaxTextExtent,token);
6647 if (*token == ',')
6648 (void) GetNextToken(p,&p,MaxTextExtent,token);
6649 y=GetDrawValue(token,&next_token);
6650 if (token == next_token)
6651 ThrowPointExpectedException(image,token);
6652 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6653 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6654 points[i]=end;
6655 }
6656 for (i=0; i < 4; i++)
6657 (q+i)->point=points[i];
6658 if (TraceBezier(mvg_info,4) == MagickFalse)
6659 return(-1);
6660 q=(*mvg_info->primitive_info)+mvg_info->offset;
6661 mvg_info->offset+=q->coordinates;
6662 q+=(ptrdiff_t) q->coordinates;
6663 point=end;
6664 while (isspace((int) ((unsigned char) *p)) != 0)
6665 p++;
6666 if (*p == ',')
6667 p++;
6668 } while (IsPoint(p) != MagickFalse);
6669 break;
6670 }
6671 case 'H':
6672 case 'h':
6673 {
6674 do
6675 {
6676 (void) GetNextToken(p,&p,MaxTextExtent,token);
6677 if (*token == ',')
6678 (void) GetNextToken(p,&p,MaxTextExtent,token);
6679 x=GetDrawValue(token,&next_token);
6680 if (token == next_token)
6681 ThrowPointExpectedException(image,token);
6682 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6683 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6684 return(-1);
6685 q=(*mvg_info->primitive_info)+mvg_info->offset;
6686 if (TracePoint(q,point) == MagickFalse)
6687 return(-1);
6688 mvg_info->offset+=q->coordinates;
6689 q+=(ptrdiff_t) q->coordinates;
6690 while (isspace((int) ((unsigned char) *p)) != 0)
6691 p++;
6692 if (*p == ',')
6693 p++;
6694 } while (IsPoint(p) != MagickFalse);
6695 break;
6696 }
6697 case 'l':
6698 case 'L':
6699 {
6700 /*
6701 Line to.
6702 */
6703 do
6704 {
6705 (void) GetNextToken(p,&p,MaxTextExtent,token);
6706 if (*token == ',')
6707 (void) GetNextToken(p,&p,MaxTextExtent,token);
6708 x=GetDrawValue(token,&next_token);
6709 if (token == next_token)
6710 ThrowPointExpectedException(image,token);
6711 (void) GetNextToken(p,&p,MaxTextExtent,token);
6712 if (*token == ',')
6713 (void) GetNextToken(p,&p,MaxTextExtent,token);
6714 y=GetDrawValue(token,&next_token);
6715 if (token == next_token)
6716 ThrowPointExpectedException(image,token);
6717 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6718 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6719 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6720 return(-1);
6721 q=(*mvg_info->primitive_info)+mvg_info->offset;
6722 if (TracePoint(q,point) == MagickFalse)
6723 return(-1);
6724 mvg_info->offset+=q->coordinates;
6725 q+=(ptrdiff_t) q->coordinates;
6726 while (isspace((int) ((unsigned char) *p)) != 0)
6727 p++;
6728 if (*p == ',')
6729 p++;
6730 } while (IsPoint(p) != MagickFalse);
6731 break;
6732 }
6733 case 'M':
6734 case 'm':
6735 {
6736 /*
6737 Move to.
6738 */
6739 if (mvg_info->offset != subpath_offset)
6740 {
6741 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6742 primitive_info->coordinates=(size_t) (q-primitive_info);
6743 number_coordinates+=primitive_info->coordinates;
6744 primitive_info=q;
6745 subpath_offset=mvg_info->offset;
6746 }
6747 i=0;
6748 do
6749 {
6750 (void) GetNextToken(p,&p,MaxTextExtent,token);
6751 if (*token == ',')
6752 (void) GetNextToken(p,&p,MaxTextExtent,token);
6753 x=GetDrawValue(token,&next_token);
6754 if (token == next_token)
6755 ThrowPointExpectedException(image,token);
6756 (void) GetNextToken(p,&p,MaxTextExtent,token);
6757 if (*token == ',')
6758 (void) GetNextToken(p,&p,MaxTextExtent,token);
6759 y=GetDrawValue(token,&next_token);
6760 if (token == next_token)
6761 ThrowPointExpectedException(image,token);
6762 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6763 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6764 if (i == 0)
6765 start=point;
6766 i++;
6767 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6768 return(-1);
6769 q=(*mvg_info->primitive_info)+mvg_info->offset;
6770 if (TracePoint(q,point) == MagickFalse)
6771 return(-1);
6772 mvg_info->offset+=q->coordinates;
6773 q+=(ptrdiff_t) q->coordinates;
6774 while (isspace((int) ((unsigned char) *p)) != 0)
6775 p++;
6776 if (*p == ',')
6777 p++;
6778 } while (IsPoint(p) != MagickFalse);
6779 break;
6780 }
6781 case 'q':
6782 case 'Q':
6783 {
6784 /*
6785 Quadratic Bézier curve.
6786 */
6787 do
6788 {
6789 points[0]=point;
6790 for (i=1; i < 3; i++)
6791 {
6792 (void) GetNextToken(p,&p,MaxTextExtent,token);
6793 if (*token == ',')
6794 (void) GetNextToken(p,&p,MaxTextExtent,token);
6795 x=GetDrawValue(token,&next_token);
6796 if (token == next_token)
6797 ThrowPointExpectedException(image,token);
6798 (void) GetNextToken(p,&p,MaxTextExtent,token);
6799 if (*token == ',')
6800 (void) GetNextToken(p,&p,MaxTextExtent,token);
6801 y=GetDrawValue(token,&next_token);
6802 if (token == next_token)
6803 ThrowPointExpectedException(image,token);
6804 if (*p == ',')
6805 p++;
6806 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6807 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6808 points[i]=end;
6809 }
6810 for (i=0; i < 3; i++)
6811 (q+i)->point=points[i];
6812 if (TraceBezier(mvg_info,3) == MagickFalse)
6813 return(-1);
6814 q=(*mvg_info->primitive_info)+mvg_info->offset;
6815 mvg_info->offset+=q->coordinates;
6816 q+=(ptrdiff_t) q->coordinates;
6817 point=end;
6818 while (isspace((int) ((unsigned char) *p)) != 0)
6819 p++;
6820 if (*p == ',')
6821 p++;
6822 } while (IsPoint(p) != MagickFalse);
6823 break;
6824 }
6825 case 's':
6826 case 'S':
6827 {
6828 /*
6829 Cubic Bézier curve.
6830 */
6831 do
6832 {
6833 points[0]=points[3];
6834 points[1].x=2.0*points[3].x-points[2].x;
6835 points[1].y=2.0*points[3].y-points[2].y;
6836 for (i=2; i < 4; i++)
6837 {
6838 (void) GetNextToken(p,&p,MaxTextExtent,token);
6839 if (*token == ',')
6840 (void) GetNextToken(p,&p,MaxTextExtent,token);
6841 x=GetDrawValue(token,&next_token);
6842 if (token == next_token)
6843 ThrowPointExpectedException(image,token);
6844 (void) GetNextToken(p,&p,MaxTextExtent,token);
6845 if (*token == ',')
6846 (void) GetNextToken(p,&p,MaxTextExtent,token);
6847 y=GetDrawValue(token,&next_token);
6848 if (token == next_token)
6849 ThrowPointExpectedException(image,token);
6850 if (*p == ',')
6851 p++;
6852 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6853 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6854 points[i]=end;
6855 }
6856 if (strchr("CcSs",last_attribute) == (char *) NULL)
6857 {
6858 points[0]=point;
6859 points[1]=point;
6860 }
6861 for (i=0; i < 4; i++)
6862 (q+i)->point=points[i];
6863 if (TraceBezier(mvg_info,4) == MagickFalse)
6864 return(-1);
6865 q=(*mvg_info->primitive_info)+mvg_info->offset;
6866 mvg_info->offset+=q->coordinates;
6867 q+=(ptrdiff_t) q->coordinates;
6868 point=end;
6869 last_attribute=attribute;
6870 while (isspace((int) ((unsigned char) *p)) != 0)
6871 p++;
6872 if (*p == ',')
6873 p++;
6874 } while (IsPoint(p) != MagickFalse);
6875 break;
6876 }
6877 case 't':
6878 case 'T':
6879 {
6880 /*
6881 Quadratic Bézier curve.
6882 */
6883 do
6884 {
6885 points[0]=points[2];
6886 points[1].x=2.0*points[2].x-points[1].x;
6887 points[1].y=2.0*points[2].y-points[1].y;
6888 for (i=2; i < 3; i++)
6889 {
6890 (void) GetNextToken(p,&p,MaxTextExtent,token);
6891 if (*token == ',')
6892 (void) GetNextToken(p,&p,MaxTextExtent,token);
6893 x=GetDrawValue(token,&next_token);
6894 if (token == next_token)
6895 ThrowPointExpectedException(image,token);
6896 (void) GetNextToken(p,&p,MaxTextExtent,token);
6897 if (*token == ',')
6898 (void) GetNextToken(p,&p,MaxTextExtent,token);
6899 y=GetDrawValue(token,&next_token);
6900 if (token == next_token)
6901 ThrowPointExpectedException(image,token);
6902 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6903 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6904 points[i]=end;
6905 }
6906 if (status == MagickFalse)
6907 break;
6908 if (strchr("QqTt",last_attribute) == (char *) NULL)
6909 {
6910 points[0]=point;
6911 points[1]=point;
6912 }
6913 for (i=0; i < 3; i++)
6914 (q+i)->point=points[i];
6915 if (TraceBezier(mvg_info,3) == MagickFalse)
6916 return(-1);
6917 q=(*mvg_info->primitive_info)+mvg_info->offset;
6918 mvg_info->offset+=q->coordinates;
6919 q+=(ptrdiff_t) q->coordinates;
6920 point=end;
6921 last_attribute=attribute;
6922 while (isspace((int) ((unsigned char) *p)) != 0)
6923 p++;
6924 if (*p == ',')
6925 p++;
6926 } while (IsPoint(p) != MagickFalse);
6927 break;
6928 }
6929 case 'v':
6930 case 'V':
6931 {
6932 /*
6933 Line to.
6934 */
6935 do
6936 {
6937 (void) GetNextToken(p,&p,MaxTextExtent,token);
6938 if (*token == ',')
6939 (void) GetNextToken(p,&p,MaxTextExtent,token);
6940 y=GetDrawValue(token,&next_token);
6941 if (token == next_token)
6942 ThrowPointExpectedException(image,token);
6943 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6944 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6945 return(-1);
6946 q=(*mvg_info->primitive_info)+mvg_info->offset;
6947 if (TracePoint(q,point) == MagickFalse)
6948 return(-1);
6949 mvg_info->offset+=q->coordinates;
6950 q+=(ptrdiff_t) q->coordinates;
6951 while (isspace((int) ((unsigned char) *p)) != 0)
6952 p++;
6953 if (*p == ',')
6954 p++;
6955 } while (IsPoint(p) != MagickFalse);
6956 break;
6957 }
6958 case 'z':
6959 case 'Z':
6960 {
6961 /*
6962 Close path.
6963 */
6964 point=start;
6965 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6966 return(-1);
6967 q=(*mvg_info->primitive_info)+mvg_info->offset;
6968 if (TracePoint(q,point) == MagickFalse)
6969 return(-1);
6970 mvg_info->offset+=q->coordinates;
6971 q+=(ptrdiff_t) q->coordinates;
6972 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6973 primitive_info->coordinates=(size_t) (q-primitive_info);
6974 primitive_info->closed_subpath=MagickTrue;
6975 number_coordinates+=primitive_info->coordinates;
6976 primitive_info=q;
6977 subpath_offset=mvg_info->offset;
6978 z_count++;
6979 break;
6980 }
6981 default:
6982 {
6983 ThrowPointExpectedException(image,token);
6984 break;
6985 }
6986 }
6987 }
6988 if (status == MagickFalse)
6989 return(-1);
6990 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6991 primitive_info->coordinates=(size_t) (q-primitive_info);
6992 number_coordinates+=primitive_info->coordinates;
6993 for (i=0; i < (ssize_t) number_coordinates; i++)
6994 {
6995 q--;
6996 q->primitive=primitive_type;
6997 if (z_count > 1)
6998 q->method=FillToBorderMethod;
6999 }
7000 q=primitive_info;
7001 return((ssize_t) number_coordinates);
7002}
7003
7004static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7005 const PointInfo start,const PointInfo end)
7006{
7007 PointInfo
7008 point;
7009
7010 PrimitiveInfo
7011 *p;
7012
7013 ssize_t
7014 i;
7015
7016 p=primitive_info;
7017 if (TracePoint(p,start) == MagickFalse)
7018 return(MagickFalse);
7019 p+=(ptrdiff_t) p->coordinates;
7020 point.x=start.x;
7021 point.y=end.y;
7022 if (TracePoint(p,point) == MagickFalse)
7023 return(MagickFalse);
7024 p+=(ptrdiff_t) p->coordinates;
7025 if (TracePoint(p,end) == MagickFalse)
7026 return(MagickFalse);
7027 p+=(ptrdiff_t) p->coordinates;
7028 point.x=end.x;
7029 point.y=start.y;
7030 if (TracePoint(p,point) == MagickFalse)
7031 return(MagickFalse);
7032 p+=(ptrdiff_t) p->coordinates;
7033 if (TracePoint(p,start) == MagickFalse)
7034 return(MagickFalse);
7035 p+=(ptrdiff_t) p->coordinates;
7036 primitive_info->coordinates=(size_t) (p-primitive_info);
7037 primitive_info->closed_subpath=MagickTrue;
7038 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7039 {
7040 p->primitive=primitive_info->primitive;
7041 p--;
7042 }
7043 return(MagickTrue);
7044}
7045
7046static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7047 const PointInfo start,const PointInfo end,PointInfo arc)
7048{
7049 PointInfo
7050 degrees,
7051 point,
7052 segment;
7053
7054 PrimitiveInfo
7055 *primitive_info;
7056
7057 PrimitiveInfo
7058 *p;
7059
7060 ssize_t
7061 i;
7062
7063 ssize_t
7064 offset;
7065
7066 offset=mvg_info->offset;
7067 segment.x=fabs(end.x-start.x);
7068 segment.y=fabs(end.y-start.y);
7069 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7070 {
7071 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7072 return(MagickTrue);
7073 }
7074 if (arc.x > (0.5*segment.x))
7075 arc.x=0.5*segment.x;
7076 if (arc.y > (0.5*segment.y))
7077 arc.y=0.5*segment.y;
7078 point.x=start.x+segment.x-arc.x;
7079 point.y=start.y+arc.y;
7080 degrees.x=270.0;
7081 degrees.y=360.0;
7082 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7083 return(MagickFalse);
7084 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7085 mvg_info->offset+=p->coordinates;
7086 point.x=start.x+segment.x-arc.x;
7087 point.y=start.y+segment.y-arc.y;
7088 degrees.x=0.0;
7089 degrees.y=90.0;
7090 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7091 return(MagickFalse);
7092 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7093 mvg_info->offset+=p->coordinates;
7094 point.x=start.x+arc.x;
7095 point.y=start.y+segment.y-arc.y;
7096 degrees.x=90.0;
7097 degrees.y=180.0;
7098 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7099 return(MagickFalse);
7100 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7101 mvg_info->offset+=p->coordinates;
7102 point.x=start.x+arc.x;
7103 point.y=start.y+arc.y;
7104 degrees.x=180.0;
7105 degrees.y=270.0;
7106 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7107 return(MagickFalse);
7108 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7109 mvg_info->offset+=p->coordinates;
7110 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7111 return(MagickFalse);
7112 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7113 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7114 return(MagickFalse);
7115 p+=(ptrdiff_t) p->coordinates;
7116 mvg_info->offset=offset;
7117 primitive_info=(*mvg_info->primitive_info)+offset;
7118 primitive_info->coordinates=(size_t) (p-primitive_info);
7119 primitive_info->closed_subpath=MagickTrue;
7120 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7121 {
7122 p->primitive=primitive_info->primitive;
7123 p--;
7124 }
7125 return(MagickTrue);
7126}
7127
7128static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7129 const size_t number_vertices,const double offset)
7130{
7131 double
7132 distance;
7133
7134 double
7135 dx,
7136 dy;
7137
7138 ssize_t
7139 i;
7140
7141 ssize_t
7142 j;
7143
7144 dx=0.0;
7145 dy=0.0;
7146 for (i=1; i < (ssize_t) number_vertices; i++)
7147 {
7148 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7149 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7150 if ((fabs((double) dx) >= MagickEpsilon) ||
7151 (fabs((double) dy) >= MagickEpsilon))
7152 break;
7153 }
7154 if (i == (ssize_t) number_vertices)
7155 i=(ssize_t) number_vertices-1L;
7156 distance=hypot((double) dx,(double) dy);
7157 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7158 dx*(distance+offset)/distance);
7159 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7160 dy*(distance+offset)/distance);
7161 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7162 {
7163 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7164 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7165 if ((fabs((double) dx) >= MagickEpsilon) ||
7166 (fabs((double) dy) >= MagickEpsilon))
7167 break;
7168 }
7169 distance=hypot((double) dx,(double) dy);
7170 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7171 dx*(distance+offset)/distance);
7172 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7173 dy*(distance+offset)/distance);
7174 return(MagickTrue);
7175}
7176
7177static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7178 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7179{
7180#define MaxStrokePad (6*BezierQuantum+360)
7181#define CheckPathExtent(pad_p,pad_q) \
7182{ \
7183 if ((pad_p) > MaxBezierCoordinates) \
7184 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7185 else \
7186 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7187 { \
7188 if (~extent_p < (pad_p)) \
7189 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7190 else \
7191 { \
7192 extent_p+=(pad_p); \
7193 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7194 MaxStrokePad,sizeof(*stroke_p)); \
7195 } \
7196 } \
7197 if ((pad_q) > MaxBezierCoordinates) \
7198 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7199 else \
7200 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7201 { \
7202 if (~extent_q < (pad_q)) \
7203 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7204 else \
7205 { \
7206 extent_q+=(pad_q); \
7207 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7208 MaxStrokePad,sizeof(*stroke_q)); \
7209 } \
7210 } \
7211 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7212 { \
7213 if (stroke_p != (PointInfo *) NULL) \
7214 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7215 if (stroke_q != (PointInfo *) NULL) \
7216 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7217 polygon_primitive=(PrimitiveInfo *) \
7218 RelinquishMagickMemory(polygon_primitive); \
7219 (void) ThrowMagickException(exception,GetMagickModule(), \
7220 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7221 return((PrimitiveInfo *) NULL); \
7222 } \
7223}
7224
7225 typedef struct _StrokeSegment
7226 {
7227 double
7228 p,
7229 q;
7230 } StrokeSegment;
7231
7232 double
7233 delta_theta,
7234 dot_product,
7235 mid,
7236 miterlimit;
7237
7238 MagickBooleanType
7239 closed_path;
7240
7241 PointInfo
7242 box_p[5],
7243 box_q[5],
7244 center,
7245 offset,
7246 *stroke_p,
7247 *stroke_q;
7248
7249 PrimitiveInfo
7250 *polygon_primitive,
7251 *stroke_polygon;
7252
7253 ssize_t
7254 i;
7255
7256 size_t
7257 arc_segments,
7258 extent_p,
7259 extent_q,
7260 number_vertices;
7261
7262 ssize_t
7263 j,
7264 n,
7265 p,
7266 q;
7267
7268 StrokeSegment
7269 dx = {0.0, 0.0},
7270 dy = {0.0, 0.0},
7271 inverse_slope = {0.0, 0.0},
7272 slope = {0.0, 0.0},
7273 theta = {0.0, 0.0};
7274
7275 /*
7276 Allocate paths.
7277 */
7278 number_vertices=primitive_info->coordinates;
7279 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7280 number_vertices+2UL,sizeof(*polygon_primitive));
7281 if (polygon_primitive == (PrimitiveInfo *) NULL)
7282 {
7283 (void) ThrowMagickException(exception,GetMagickModule(),
7284 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7285 return((PrimitiveInfo *) NULL);
7286 }
7287 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7288 sizeof(*polygon_primitive));
7289 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7290 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7291 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7292 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7293 if ((draw_info->linejoin == MiterJoin) ||
7294 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7295 {
7296 polygon_primitive[number_vertices]=primitive_info[1];
7297 number_vertices++;
7298 }
7299 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7300 /*
7301 Compute the slope for the first line segment, p.
7302 */
7303 closed_path=primitive_info[0].closed_subpath;
7304 dx.p=0.0;
7305 dy.p=0.0;
7306 for (n=1; n < (ssize_t) number_vertices; n++)
7307 {
7308 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7309 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7310 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7311 break;
7312 }
7313 if (n == (ssize_t) number_vertices)
7314 {
7315 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7316 {
7317 /*
7318 Zero length subpath.
7319 */
7320 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7321 sizeof(*stroke_polygon));
7322 stroke_polygon[0]=polygon_primitive[0];
7323 stroke_polygon[0].coordinates=0;
7324 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7325 polygon_primitive);
7326 return(stroke_polygon);
7327 }
7328 n=(ssize_t) number_vertices-1L;
7329 }
7330 extent_p=2*number_vertices;
7331 extent_q=2*number_vertices;
7332 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7333 sizeof(*stroke_p));
7334 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7335 sizeof(*stroke_q));
7336 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7337 {
7338 if (stroke_p != (PointInfo *) NULL)
7339 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7340 if (stroke_q != (PointInfo *) NULL)
7341 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7342 polygon_primitive=(PrimitiveInfo *)
7343 RelinquishMagickMemory(polygon_primitive);
7344 (void) ThrowMagickException(exception,GetMagickModule(),
7345 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7346 return((PrimitiveInfo *) NULL);
7347 }
7348 slope.p=0.0;
7349 inverse_slope.p=0.0;
7350 if (fabs(dx.p) < MagickEpsilon)
7351 {
7352 if (dx.p >= 0.0)
7353 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7354 else
7355 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7356 }
7357 else
7358 if (fabs(dy.p) < MagickEpsilon)
7359 {
7360 if (dy.p >= 0.0)
7361 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7362 else
7363 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7364 }
7365 else
7366 {
7367 slope.p=dy.p/dx.p;
7368 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7369 }
7370 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7371 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7372 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7373 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7374 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7375 offset.y=(double) (offset.x*inverse_slope.p);
7376 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7377 {
7378 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7379 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7380 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7381 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7382 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7383 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7384 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7385 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7386 }
7387 else
7388 {
7389 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7390 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7391 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7392 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7393 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7394 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7395 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7396 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7397 }
7398 /*
7399 Create strokes for the line join attribute: bevel, miter, round.
7400 */
7401 p=0;
7402 q=0;
7403 stroke_q[p++]=box_q[0];
7404 stroke_p[q++]=box_p[0];
7405 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7406 {
7407 /*
7408 Compute the slope for this line segment, q.
7409 */
7410 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7411 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7412 dot_product=dx.q*dx.q+dy.q*dy.q;
7413 if (dot_product < 0.25)
7414 continue;
7415 slope.q=0.0;
7416 inverse_slope.q=0.0;
7417 if (fabs(dx.q) < MagickEpsilon)
7418 {
7419 if (dx.q >= 0.0)
7420 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7421 else
7422 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7423 }
7424 else
7425 if (fabs(dy.q) < MagickEpsilon)
7426 {
7427 if (dy.q >= 0.0)
7428 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7429 else
7430 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7431 }
7432 else
7433 {
7434 slope.q=dy.q/dx.q;
7435 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7436 }
7437 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7438 offset.y=(double) (offset.x*inverse_slope.q);
7439 dot_product=dy.q*offset.x-dx.q*offset.y;
7440 if (dot_product > 0.0)
7441 {
7442 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7443 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7444 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7445 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7446 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7447 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7448 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7449 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7450 }
7451 else
7452 {
7453 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7454 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7455 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7456 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7457 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7458 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7459 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7460 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7461 }
7462 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7463 {
7464 box_p[4]=box_p[1];
7465 box_q[4]=box_q[1];
7466 }
7467 else
7468 {
7469 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7470 box_p[3].y)/(slope.p-slope.q));
7471 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7472 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7473 box_q[3].y)/(slope.p-slope.q));
7474 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7475 }
7476 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7477 dot_product=dx.q*dy.p-dx.p*dy.q;
7478 if (dot_product <= 0.0)
7479 switch (draw_info->linejoin)
7480 {
7481 case BevelJoin:
7482 {
7483 stroke_q[q++]=box_q[1];
7484 stroke_q[q++]=box_q[2];
7485 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7486 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7487 if (dot_product <= miterlimit)
7488 stroke_p[p++]=box_p[4];
7489 else
7490 {
7491 stroke_p[p++]=box_p[1];
7492 stroke_p[p++]=box_p[2];
7493 }
7494 break;
7495 }
7496 case MiterJoin:
7497 {
7498 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7499 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7500 if (dot_product <= miterlimit)
7501 {
7502 stroke_q[q++]=box_q[4];
7503 stroke_p[p++]=box_p[4];
7504 }
7505 else
7506 {
7507 stroke_q[q++]=box_q[1];
7508 stroke_q[q++]=box_q[2];
7509 stroke_p[p++]=box_p[1];
7510 stroke_p[p++]=box_p[2];
7511 }
7512 break;
7513 }
7514 case RoundJoin:
7515 {
7516 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7517 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7518 if (dot_product <= miterlimit)
7519 stroke_p[p++]=box_p[4];
7520 else
7521 {
7522 stroke_p[p++]=box_p[1];
7523 stroke_p[p++]=box_p[2];
7524 }
7525 center=polygon_primitive[n].point;
7526 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7527 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7528 if (theta.q < theta.p)
7529 theta.q+=2.0*MagickPI;
7530 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7531 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7532 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7533 stroke_q[q].x=box_q[1].x;
7534 stroke_q[q].y=box_q[1].y;
7535 q++;
7536 for (j=1; j < (ssize_t) arc_segments; j++)
7537 {
7538 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7539 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7540 (theta.p+delta_theta),DegreesToRadians(360.0))));
7541 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7542 (theta.p+delta_theta),DegreesToRadians(360.0))));
7543 q++;
7544 }
7545 stroke_q[q++]=box_q[2];
7546 break;
7547 }
7548 default:
7549 break;
7550 }
7551 else
7552 switch (draw_info->linejoin)
7553 {
7554 case BevelJoin:
7555 {
7556 stroke_p[p++]=box_p[1];
7557 stroke_p[p++]=box_p[2];
7558 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7559 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7560 if (dot_product <= miterlimit)
7561 stroke_q[q++]=box_q[4];
7562 else
7563 {
7564 stroke_q[q++]=box_q[1];
7565 stroke_q[q++]=box_q[2];
7566 }
7567 break;
7568 }
7569 case MiterJoin:
7570 {
7571 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7572 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7573 if (dot_product <= miterlimit)
7574 {
7575 stroke_q[q++]=box_q[4];
7576 stroke_p[p++]=box_p[4];
7577 }
7578 else
7579 {
7580 stroke_q[q++]=box_q[1];
7581 stroke_q[q++]=box_q[2];
7582 stroke_p[p++]=box_p[1];
7583 stroke_p[p++]=box_p[2];
7584 }
7585 break;
7586 }
7587 case RoundJoin:
7588 {
7589 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7590 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7591 if (dot_product <= miterlimit)
7592 stroke_q[q++]=box_q[4];
7593 else
7594 {
7595 stroke_q[q++]=box_q[1];
7596 stroke_q[q++]=box_q[2];
7597 }
7598 center=polygon_primitive[n].point;
7599 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7600 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7601 if (theta.p < theta.q)
7602 theta.p+=2.0*MagickPI;
7603 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7604 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7605 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7606 stroke_p[p++]=box_p[1];
7607 for (j=1; j < (ssize_t) arc_segments; j++)
7608 {
7609 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7610 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7611 (theta.p+delta_theta),DegreesToRadians(360.0))));
7612 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7613 (theta.p+delta_theta),DegreesToRadians(360.0))));
7614 p++;
7615 }
7616 stroke_p[p++]=box_p[2];
7617 break;
7618 }
7619 default:
7620 break;
7621 }
7622 slope.p=slope.q;
7623 inverse_slope.p=inverse_slope.q;
7624 box_p[0]=box_p[2];
7625 box_p[1]=box_p[3];
7626 box_q[0]=box_q[2];
7627 box_q[1]=box_q[3];
7628 dx.p=dx.q;
7629 dy.p=dy.q;
7630 n=i;
7631 }
7632 stroke_p[p++]=box_p[1];
7633 stroke_q[q++]=box_q[1];
7634 /*
7635 Trace stroked polygon.
7636 */
7637 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7638 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7639 if (stroke_polygon == (PrimitiveInfo *) NULL)
7640 {
7641 (void) ThrowMagickException(exception,GetMagickModule(),
7642 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7643 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7644 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7645 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7646 polygon_primitive);
7647 return(stroke_polygon);
7648 }
7649 for (i=0; i < (ssize_t) p; i++)
7650 {
7651 stroke_polygon[i]=polygon_primitive[0];
7652 stroke_polygon[i].point=stroke_p[i];
7653 }
7654 if (closed_path != MagickFalse)
7655 {
7656 stroke_polygon[i]=polygon_primitive[0];
7657 stroke_polygon[i].point=stroke_polygon[0].point;
7658 i++;
7659 }
7660 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7661 {
7662 stroke_polygon[i]=polygon_primitive[0];
7663 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7664 }
7665 if (closed_path != MagickFalse)
7666 {
7667 stroke_polygon[i]=polygon_primitive[0];
7668 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7669 i++;
7670 }
7671 stroke_polygon[i]=polygon_primitive[0];
7672 stroke_polygon[i].point=stroke_polygon[0].point;
7673 i++;
7674 stroke_polygon[i].primitive=UndefinedPrimitive;
7675 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7676 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7677 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7678 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7679 return(stroke_polygon);
7680}
_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