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 status=MagickFalse;
3479 break;
3480 }
3481 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3482 graphic_context[n-1]);
3483 if (*q == '"')
3484 {
3485 (void) GetNextToken(q,&q,extent,token);
3486 (void) CloneString(&graphic_context[n]->id,token);
3487 }
3488 if (n > MagickMaxRecursionDepth)
3489 {
3490 (void) ThrowMagickException(&image->exception,
3491 GetMagickModule(),DrawError,"VectorGraphicsNestedTooDeeply",
3492 "`%s'",image->filename);
3493 status=MagickFalse;
3494 }
3495 break;
3496 }
3497 if (LocaleCompare("mask",token) == 0)
3498 {
3499 (void) GetNextToken(q,&q,extent,token);
3500 break;
3501 }
3502 if (LocaleCompare("pattern",token) == 0)
3503 {
3504 RectangleInfo
3505 bounds;
3506
3507 (void) GetNextToken(q,&q,extent,token);
3508 (void) CopyMagickString(name,token,MaxTextExtent);
3509 (void) GetNextToken(q,&q,extent,token);
3510 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3511 &next_token)-0.5));
3512 if (token == next_token)
3513 ThrowPointExpectedException(image,token);
3514 (void) GetNextToken(q,&q,extent,token);
3515 if (*token == ',')
3516 (void) GetNextToken(q,&q,extent,token);
3517 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3518 &next_token)-0.5));
3519 if (token == next_token)
3520 ThrowPointExpectedException(image,token);
3521 (void) GetNextToken(q,&q,extent,token);
3522 if (*token == ',')
3523 (void) GetNextToken(q,&q,extent,token);
3524 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3525 &next_token)+0.5);
3526 if (token == next_token)
3527 ThrowPointExpectedException(image,token);
3528 (void) GetNextToken(q,&q,extent,token);
3529 if (*token == ',')
3530 (void) GetNextToken(q,&q,extent,token);
3531 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3532 &next_token)+0.5);
3533 if (token == next_token)
3534 ThrowPointExpectedException(image,token);
3535 for (p=q; *q != '\0'; )
3536 {
3537 if (GetNextToken(q,&q,extent,token) < 1)
3538 break;
3539 if (LocaleCompare(token,"pop") != 0)
3540 continue;
3541 (void) GetNextToken(q,(const char **) NULL,extent,token);
3542 if (LocaleCompare(token,"pattern") != 0)
3543 continue;
3544 break;
3545 }
3546 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3547 {
3548 status=MagickFalse;
3549 break;
3550 }
3551 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3552 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3553 (void) SetImageArtifact(image,key,token);
3554 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3555 (void) FormatLocaleString(geometry,MaxTextExtent,
3556 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3557 bounds.height,(double) bounds.x,(double) bounds.y);
3558 (void) SetImageArtifact(image,key,geometry);
3559 (void) GetNextToken(q,&q,extent,token);
3560 break;
3561 }
3562 if (LocaleCompare("symbol",token) == 0)
3563 {
3564 symbolDepth++;
3565 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3566 MagickTrue;
3567 break;
3568 }
3569 status=MagickFalse;
3570 break;
3571 }
3572 status=MagickFalse;
3573 break;
3574 }
3575 case 'r':
3576 case 'R':
3577 {
3578 if (LocaleCompare("rectangle",keyword) == 0)
3579 {
3580 primitive_type=RectanglePrimitive;
3581 break;
3582 }
3583 if (LocaleCompare("rotate",keyword) == 0)
3584 {
3585 (void) GetNextToken(q,&q,extent,token);
3586 angle=GetDrawValue(token,&next_token);
3587 if (token == next_token)
3588 ThrowPointExpectedException(image,token);
3589 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3590 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3591 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3592 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3593 break;
3594 }
3595 if (LocaleCompare("roundRectangle",keyword) == 0)
3596 {
3597 primitive_type=RoundRectanglePrimitive;
3598 break;
3599 }
3600 status=MagickFalse;
3601 break;
3602 }
3603 case 's':
3604 case 'S':
3605 {
3606 if (LocaleCompare("scale",keyword) == 0)
3607 {
3608 (void) GetNextToken(q,&q,extent,token);
3609 affine.sx=GetDrawValue(token,&next_token);
3610 if (token == next_token)
3611 ThrowPointExpectedException(image,token);
3612 (void) GetNextToken(q,&q,extent,token);
3613 if (*token == ',')
3614 (void) GetNextToken(q,&q,extent,token);
3615 affine.sy=GetDrawValue(token,&next_token);
3616 if (token == next_token)
3617 ThrowPointExpectedException(image,token);
3618 break;
3619 }
3620 if (LocaleCompare("skewX",keyword) == 0)
3621 {
3622 (void) GetNextToken(q,&q,extent,token);
3623 angle=GetDrawValue(token,&next_token);
3624 if (token == next_token)
3625 ThrowPointExpectedException(image,token);
3626 affine.ry=sin(DegreesToRadians(angle));
3627 break;
3628 }
3629 if (LocaleCompare("skewY",keyword) == 0)
3630 {
3631 (void) GetNextToken(q,&q,extent,token);
3632 angle=GetDrawValue(token,&next_token);
3633 if (token == next_token)
3634 ThrowPointExpectedException(image,token);
3635 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3636 break;
3637 }
3638 if (LocaleCompare("stop-color",keyword) == 0)
3639 {
3640 GradientType
3641 type;
3642
3643 PixelPacket
3644 stop_color;
3645
3646 (void) GetNextToken(q,&q,extent,token);
3647 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3648 type=LinearGradient;
3649 if (draw_info->gradient.type == RadialGradient)
3650 type=RadialGradient;
3651 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3652 start_color=stop_color;
3653 (void) GetNextToken(q,&q,extent,token);
3654 break;
3655 }
3656 if (LocaleCompare("stroke",keyword) == 0)
3657 {
3658 const char
3659 *mvg_class;
3660
3661 (void) GetNextToken(q,&q,extent,token);
3662 if (graphic_context[n]->clip_path != MagickFalse)
3663 break;
3664 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3665 if (mvg_class != (const char *) NULL)
3666 {
3667 (void) DrawPatternPath(image,draw_info,mvg_class,
3668 &graphic_context[n]->stroke_pattern);
3669 break;
3670 }
3671 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3672 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3673 {
3674 (void) DrawPatternPath(image,draw_info,token,
3675 &graphic_context[n]->stroke_pattern);
3676 break;
3677 }
3678 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3679 &image->exception);
3680 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3681 graphic_context[n]->stroke.opacity=ClampToQuantum(
3682 graphic_context[n]->stroke_opacity);
3683 break;
3684 }
3685 if (LocaleCompare("stroke-antialias",keyword) == 0)
3686 {
3687 (void) GetNextToken(q,&q,extent,token);
3688 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3689 MagickTrue : MagickFalse;
3690 break;
3691 }
3692 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3693 {
3694 if (graphic_context[n]->dash_pattern != (double *) NULL)
3695 graphic_context[n]->dash_pattern=(double *)
3696 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3697 if (IsPoint(q) != MagickFalse)
3698 {
3699 const char
3700 *p;
3701
3702 p=q;
3703 (void) GetNextToken(p,&p,extent,token);
3704 if (*token == ',')
3705 (void) GetNextToken(p,&p,extent,token);
3706 for (x=0; IsPoint(token) != MagickFalse; x++)
3707 {
3708 (void) GetNextToken(p,&p,extent,token);
3709 if (*token == ',')
3710 (void) GetNextToken(p,&p,extent,token);
3711 }
3712 graphic_context[n]->dash_pattern=(double *)
3713 AcquireQuantumMemory((size_t) (2*x+2),
3714 sizeof(*graphic_context[n]->dash_pattern));
3715 if (graphic_context[n]->dash_pattern == (double *) NULL)
3716 {
3717 (void) ThrowMagickException(&image->exception,
3718 GetMagickModule(),ResourceLimitError,
3719 "MemoryAllocationFailed","`%s'",image->filename);
3720 status=MagickFalse;
3721 break;
3722 }
3723 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3724 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3725 for (j=0; j < x; j++)
3726 {
3727 (void) GetNextToken(q,&q,extent,token);
3728 if (*token == ',')
3729 (void) GetNextToken(q,&q,extent,token);
3730 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3731 &next_token);
3732 if (token == next_token)
3733 ThrowPointExpectedException(image,token);
3734 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3735 status=MagickFalse;
3736 }
3737 if ((x & 0x01) != 0)
3738 for ( ; j < (2*x); j++)
3739 graphic_context[n]->dash_pattern[j]=
3740 graphic_context[n]->dash_pattern[j-x];
3741 graphic_context[n]->dash_pattern[j]=0.0;
3742 break;
3743 }
3744 (void) GetNextToken(q,&q,extent,token);
3745 break;
3746 }
3747 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3748 {
3749 (void) GetNextToken(q,&q,extent,token);
3750 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3751 if (token == next_token)
3752 ThrowPointExpectedException(image,token);
3753 break;
3754 }
3755 if (LocaleCompare("stroke-linecap",keyword) == 0)
3756 {
3757 ssize_t
3758 linecap;
3759
3760 (void) GetNextToken(q,&q,extent,token);
3761 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3762 if (linecap == -1)
3763 {
3764 status=MagickFalse;
3765 break;
3766 }
3767 graphic_context[n]->linecap=(LineCap) linecap;
3768 break;
3769 }
3770 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3771 {
3772 ssize_t
3773 linejoin;
3774
3775 (void) GetNextToken(q,&q,extent,token);
3776 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3777 token);
3778 if (linejoin == -1)
3779 {
3780 status=MagickFalse;
3781 break;
3782 }
3783 graphic_context[n]->linejoin=(LineJoin) linejoin;
3784 break;
3785 }
3786 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3787 {
3788 (void) GetNextToken(q,&q,extent,token);
3789 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3790 break;
3791 }
3792 if (LocaleCompare("stroke-opacity",keyword) == 0)
3793 {
3794 double
3795 opacity;
3796
3797 (void) GetNextToken(q,&q,extent,token);
3798 if (graphic_context[n]->clip_path != MagickFalse)
3799 break;
3800 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3801 opacity=MagickMin(MagickMax(factor*
3802 GetDrawValue(token,&next_token),0.0),1.0);
3803 if (token == next_token)
3804 ThrowPointExpectedException(image,token);
3805 if (graphic_context[n]->compliance == SVGCompliance)
3806 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3807 else
3808 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3809 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3810 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3811 graphic_context[n]->stroke.opacity=(Quantum)
3812 graphic_context[n]->stroke_opacity;
3813 else
3814 graphic_context[n]->stroke.opacity=ClampToQuantum(
3815 (MagickRealType) QuantumRange*opacity);
3816 break;
3817 }
3818 if (LocaleCompare("stroke-width",keyword) == 0)
3819 {
3820 (void) GetNextToken(q,&q,extent,token);
3821 if (graphic_context[n]->clip_path != MagickFalse)
3822 break;
3823 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3824 if ((token == next_token) ||
3825 (graphic_context[n]->stroke_width < 0.0))
3826 ThrowPointExpectedException(image,token);
3827 break;
3828 }
3829 status=MagickFalse;
3830 break;
3831 }
3832 case 't':
3833 case 'T':
3834 {
3835 if (LocaleCompare("text",keyword) == 0)
3836 {
3837 primitive_type=TextPrimitive;
3838 cursor=0.0;
3839 break;
3840 }
3841 if (LocaleCompare("text-align",keyword) == 0)
3842 {
3843 ssize_t
3844 align;
3845
3846 (void) GetNextToken(q,&q,extent,token);
3847 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3848 if (align == -1)
3849 {
3850 status=MagickFalse;
3851 break;
3852 }
3853 graphic_context[n]->align=(AlignType) align;
3854 break;
3855 }
3856 if (LocaleCompare("text-anchor",keyword) == 0)
3857 {
3858 ssize_t
3859 align;
3860
3861 (void) GetNextToken(q,&q,extent,token);
3862 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3863 if (align == -1)
3864 {
3865 status=MagickFalse;
3866 break;
3867 }
3868 graphic_context[n]->align=(AlignType) align;
3869 break;
3870 }
3871 if (LocaleCompare("text-antialias",keyword) == 0)
3872 {
3873 (void) GetNextToken(q,&q,extent,token);
3874 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3875 MagickTrue : MagickFalse;
3876 break;
3877 }
3878 if (LocaleCompare("text-undercolor",keyword) == 0)
3879 {
3880 (void) GetNextToken(q,&q,extent,token);
3881 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3882 &image->exception);
3883 break;
3884 }
3885 if (LocaleCompare("translate",keyword) == 0)
3886 {
3887 (void) GetNextToken(q,&q,extent,token);
3888 affine.tx=GetDrawValue(token,&next_token);
3889 if (token == next_token)
3890 ThrowPointExpectedException(image,token);
3891 (void) GetNextToken(q,&q,extent,token);
3892 if (*token == ',')
3893 (void) GetNextToken(q,&q,extent,token);
3894 affine.ty=GetDrawValue(token,&next_token);
3895 if (token == next_token)
3896 ThrowPointExpectedException(image,token);
3897 break;
3898 }
3899 status=MagickFalse;
3900 break;
3901 }
3902 case 'u':
3903 case 'U':
3904 {
3905 if (LocaleCompare("use",keyword) == 0)
3906 {
3907 const char
3908 *use;
3909
3910 /*
3911 Get a macro from the MVG document, and "use" it here.
3912 */
3913 (void) GetNextToken(q,&q,extent,token);
3914 use=(const char *) GetValueFromSplayTree(macros,token);
3915 if (use != (const char *) NULL)
3916 {
3917 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3918 (void) CloneString(&clone_info->primitive,use);
3919 status=RenderMVGContent(image,clone_info,depth+1);
3920 clone_info=DestroyDrawInfo(clone_info);
3921 }
3922 break;
3923 }
3924 status=MagickFalse;
3925 break;
3926 }
3927 case 'v':
3928 case 'V':
3929 {
3930 if (LocaleCompare("viewbox",keyword) == 0)
3931 {
3932 (void) GetNextToken(q,&q,extent,token);
3933 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3934 GetDrawValue(token,&next_token)-0.5));
3935 if (token == next_token)
3936 ThrowPointExpectedException(image,token);
3937 (void) GetNextToken(q,&q,extent,token);
3938 if (*token == ',')
3939 (void) GetNextToken(q,&q,extent,token);
3940 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3941 GetDrawValue(token,&next_token)-0.5));
3942 if (token == next_token)
3943 ThrowPointExpectedException(image,token);
3944 (void) GetNextToken(q,&q,extent,token);
3945 if (*token == ',')
3946 (void) GetNextToken(q,&q,extent,token);
3947 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3948 GetDrawValue(token,&next_token)+0.5);
3949 if (token == next_token)
3950 ThrowPointExpectedException(image,token);
3951 (void) GetNextToken(q,&q,extent,token);
3952 if (*token == ',')
3953 (void) GetNextToken(q,&q,extent,token);
3954 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3955 GetDrawValue(token,&next_token)+0.5);
3956 if (token == next_token)
3957 ThrowPointExpectedException(image,token);
3958 break;
3959 }
3960 status=MagickFalse;
3961 break;
3962 }
3963 case 'w':
3964 case 'W':
3965 {
3966 if (LocaleCompare("word-spacing",keyword) == 0)
3967 {
3968 (void) GetNextToken(q,&q,extent,token);
3969 graphic_context[n]->interword_spacing=GetDrawValue(token,
3970 &next_token);
3971 if (token == next_token)
3972 ThrowPointExpectedException(image,token);
3973 break;
3974 }
3975 status=MagickFalse;
3976 break;
3977 }
3978 default:
3979 {
3980 status=MagickFalse;
3981 break;
3982 }
3983 }
3984 if (status == MagickFalse)
3985 break;
3986 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3987 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3988 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3989 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3990 {
3991 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3992 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3993 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3994 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3995 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3996 current.tx;
3997 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3998 current.ty;
3999 }
4000 if (primitive_type == UndefinedPrimitive)
4001 {
4002 if ((draw_info->debug != MagickFalse) && (q > p))
4003 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4004 (q-p-1),p);
4005 continue;
4006 }
4007 /*
4008 Parse the primitive attributes.
4009 */
4010 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4011 if (primitive_info[i].text != (char *) NULL)
4012 primitive_info[i].text=DestroyString(primitive_info[i].text);
4013 i=0;
4014 mvg_info.offset=i;
4015 j=0;
4016 primitive_info[0].point.x=0.0;
4017 primitive_info[0].point.y=0.0;
4018 primitive_info[0].coordinates=0;
4019 primitive_info[0].method=FloodfillMethod;
4020 primitive_info[0].closed_subpath=MagickFalse;
4021 for (x=0; *q != '\0'; x++)
4022 {
4023 /*
4024 Define points.
4025 */
4026 if (IsPoint(q) == MagickFalse)
4027 break;
4028 (void) GetNextToken(q,&q,extent,token);
4029 point.x=GetDrawValue(token,&next_token);
4030 if (token == next_token)
4031 ThrowPointExpectedException(image,token);
4032 (void) GetNextToken(q,&q,extent,token);
4033 if (*token == ',')
4034 (void) GetNextToken(q,&q,extent,token);
4035 point.y=GetDrawValue(token,&next_token);
4036 if (token == next_token)
4037 ThrowPointExpectedException(image,token);
4038 (void) GetNextToken(q,(const char **) NULL,extent,token);
4039 if (*token == ',')
4040 (void) GetNextToken(q,&q,extent,token);
4041 primitive_info[i].primitive=primitive_type;
4042 primitive_info[i].point=point;
4043 primitive_info[i].coordinates=0;
4044 primitive_info[i].method=FloodfillMethod;
4045 primitive_info[i].closed_subpath=MagickFalse;
4046 i++;
4047 mvg_info.offset=i;
4048 if (i < (ssize_t) number_points)
4049 continue;
4050 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4051 primitive_info=(*mvg_info.primitive_info);
4052 }
4053 if (status == MagickFalse)
4054 break;
4055 if (primitive_info[j].text != (char *) NULL)
4056 primitive_info[j].text=DestroyString(primitive_info[j].text);
4057 primitive_info[j].primitive=primitive_type;
4058 primitive_info[j].coordinates=(size_t) x;
4059 primitive_info[j].method=FloodfillMethod;
4060 primitive_info[j].closed_subpath=MagickFalse;
4061 /*
4062 Circumscribe primitive within a circle.
4063 */
4064 bounds.x1=primitive_info[j].point.x;
4065 bounds.y1=primitive_info[j].point.y;
4066 bounds.x2=primitive_info[j].point.x;
4067 bounds.y2=primitive_info[j].point.y;
4068 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4069 {
4070 point=primitive_info[j+k].point;
4071 if (point.x < bounds.x1)
4072 bounds.x1=point.x;
4073 if (point.y < bounds.y1)
4074 bounds.y1=point.y;
4075 if (point.x > bounds.x2)
4076 bounds.x2=point.x;
4077 if (point.y > bounds.y2)
4078 bounds.y2=point.y;
4079 }
4080 /*
4081 Speculate how many points our primitive might consume.
4082 */
4083 coordinates=(double) primitive_info[j].coordinates;
4084 switch (primitive_type)
4085 {
4086 case RectanglePrimitive:
4087 {
4088 coordinates*=5.0;
4089 break;
4090 }
4091 case RoundRectanglePrimitive:
4092 {
4093 double
4094 alpha,
4095 beta,
4096 radius;
4097
4098 alpha=bounds.x2-bounds.x1;
4099 beta=bounds.y2-bounds.y1;
4100 radius=hypot(alpha,beta);
4101 coordinates*=5.0;
4102 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4103 BezierQuantum+360.0;
4104 break;
4105 }
4106 case BezierPrimitive:
4107 {
4108 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4109 break;
4110 }
4111 case PathPrimitive:
4112 {
4113 char
4114 *s,
4115 *t;
4116
4117 (void) GetNextToken(q,&q,extent,token);
4118 coordinates=1.0;
4119 t=token;
4120 for (s=token; *s != '\0'; s=t)
4121 {
4122 double
4123 value;
4124
4125 value=GetDrawValue(s,&t);
4126 (void) value;
4127 if (s == t)
4128 {
4129 t++;
4130 continue;
4131 }
4132 coordinates++;
4133 }
4134 for (s=token; *s != '\0'; s++)
4135 if (strspn(s,"AaCcQqSsTt") != 0)
4136 coordinates+=(20.0*BezierQuantum)+360.0;
4137 break;
4138 }
4139 default:
4140 break;
4141 }
4142 if (status == MagickFalse)
4143 break;
4144 if (((size_t) (i+coordinates)) >= number_points)
4145 {
4146 /*
4147 Resize based on speculative points required by primitive.
4148 */
4149 number_points+=coordinates+1;
4150 if (number_points < (size_t) coordinates)
4151 {
4152 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4153 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4154 image->filename);
4155 status=MagickFalse;
4156 break;
4157 }
4158 mvg_info.offset=i;
4159 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4160 primitive_info=(*mvg_info.primitive_info);
4161 }
4162 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4163 primitive_info=(*mvg_info.primitive_info);
4164 if (status == MagickFalse)
4165 break;
4166 mvg_info.offset=j;
4167 switch (primitive_type)
4168 {
4169 case PointPrimitive:
4170 default:
4171 {
4172 if (primitive_info[j].coordinates != 1)
4173 {
4174 status=MagickFalse;
4175 break;
4176 }
4177 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4178 primitive_info=(*mvg_info.primitive_info);
4179 i=(ssize_t) (j+primitive_info[j].coordinates);
4180 break;
4181 }
4182 case LinePrimitive:
4183 {
4184 if (primitive_info[j].coordinates != 2)
4185 {
4186 status=MagickFalse;
4187 break;
4188 }
4189 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4190 primitive_info[j+1].point);
4191 primitive_info=(*mvg_info.primitive_info);
4192 i=(ssize_t) (j+primitive_info[j].coordinates);
4193 break;
4194 }
4195 case RectanglePrimitive:
4196 {
4197 if (primitive_info[j].coordinates != 2)
4198 {
4199 status=MagickFalse;
4200 break;
4201 }
4202 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4203 primitive_info[j+1].point);
4204 primitive_info=(*mvg_info.primitive_info);
4205 i=(ssize_t) (j+primitive_info[j].coordinates);
4206 break;
4207 }
4208 case RoundRectanglePrimitive:
4209 {
4210 if (primitive_info[j].coordinates != 3)
4211 {
4212 status=MagickFalse;
4213 break;
4214 }
4215 if ((primitive_info[j+2].point.x < 0.0) ||
4216 (primitive_info[j+2].point.y < 0.0))
4217 {
4218 status=MagickFalse;
4219 break;
4220 }
4221 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4222 {
4223 status=MagickFalse;
4224 break;
4225 }
4226 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4227 {
4228 status=MagickFalse;
4229 break;
4230 }
4231 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4232 primitive_info[j+1].point,primitive_info[j+2].point);
4233 primitive_info=(*mvg_info.primitive_info);
4234 i=(ssize_t) (j+primitive_info[j].coordinates);
4235 break;
4236 }
4237 case ArcPrimitive:
4238 {
4239 if (primitive_info[j].coordinates != 3)
4240 {
4241 status=MagickFalse;
4242 break;
4243 }
4244 status&=TraceArc(&mvg_info,primitive_info[j].point,
4245 primitive_info[j+1].point,primitive_info[j+2].point);
4246 primitive_info=(*mvg_info.primitive_info);
4247 i=(ssize_t) (j+primitive_info[j].coordinates);
4248 break;
4249 }
4250 case EllipsePrimitive:
4251 {
4252 if (primitive_info[j].coordinates != 3)
4253 {
4254 status=MagickFalse;
4255 break;
4256 }
4257 if ((primitive_info[j+1].point.x < 0.0) ||
4258 (primitive_info[j+1].point.y < 0.0))
4259 {
4260 status=MagickFalse;
4261 break;
4262 }
4263 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4264 primitive_info[j+1].point,primitive_info[j+2].point);
4265 primitive_info=(*mvg_info.primitive_info);
4266 i=(ssize_t) (j+primitive_info[j].coordinates);
4267 break;
4268 }
4269 case CirclePrimitive:
4270 {
4271 if (primitive_info[j].coordinates != 2)
4272 {
4273 status=MagickFalse;
4274 break;
4275 }
4276 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4277 primitive_info[j+1].point);
4278 primitive_info=(*mvg_info.primitive_info);
4279 i=(ssize_t) (j+primitive_info[j].coordinates);
4280 break;
4281 }
4282 case PolylinePrimitive:
4283 {
4284 if (primitive_info[j].coordinates < 1)
4285 {
4286 status=MagickFalse;
4287 break;
4288 }
4289 break;
4290 }
4291 case PolygonPrimitive:
4292 {
4293 if (primitive_info[j].coordinates < 3)
4294 {
4295 status=MagickFalse;
4296 break;
4297 }
4298 primitive_info[i]=primitive_info[j];
4299 primitive_info[i].coordinates=0;
4300 primitive_info[j].coordinates++;
4301 primitive_info[j].closed_subpath=MagickTrue;
4302 i++;
4303 break;
4304 }
4305 case BezierPrimitive:
4306 {
4307 if (primitive_info[j].coordinates < 3)
4308 {
4309 status=MagickFalse;
4310 break;
4311 }
4312 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4313 primitive_info=(*mvg_info.primitive_info);
4314 i=(ssize_t) (j+primitive_info[j].coordinates);
4315 break;
4316 }
4317 case PathPrimitive:
4318 {
4319 coordinates=(double) TracePath(image,&mvg_info,token);
4320 primitive_info=(*mvg_info.primitive_info);
4321 if (coordinates < 0.0)
4322 {
4323 status=MagickFalse;
4324 break;
4325 }
4326 i=(ssize_t) (j+coordinates);
4327 break;
4328 }
4329 case ColorPrimitive:
4330 case MattePrimitive:
4331 {
4332 ssize_t
4333 method;
4334
4335 if (primitive_info[j].coordinates != 1)
4336 {
4337 status=MagickFalse;
4338 break;
4339 }
4340 (void) GetNextToken(q,&q,extent,token);
4341 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4342 if (method == -1)
4343 {
4344 status=MagickFalse;
4345 break;
4346 }
4347 primitive_info[j].method=(PaintMethod) method;
4348 break;
4349 }
4350 case TextPrimitive:
4351 {
4352 char
4353 geometry[MagickPathExtent];
4354
4355 if (primitive_info[j].coordinates != 1)
4356 {
4357 status=MagickFalse;
4358 break;
4359 }
4360 if (*token != ',')
4361 (void) GetNextToken(q,&q,extent,token);
4362 (void) CloneString(&primitive_info[j].text,token);
4363 /*
4364 Compute text cursor offset.
4365 */
4366 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4367 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4368 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4369 {
4370 mvg_info.point=primitive_info->point;
4371 primitive_info->point.x+=cursor;
4372 }
4373 else
4374 {
4375 mvg_info.point=primitive_info->point;
4376 cursor=0.0;
4377 }
4378 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4379 primitive_info->point.x,primitive_info->point.y);
4380 clone_info->render=MagickFalse;
4381 clone_info->text=AcquireString(token);
4382 status&=GetTypeMetrics(image,clone_info,&metrics);
4383 clone_info=DestroyDrawInfo(clone_info);
4384 cursor+=metrics.width;
4385 if (graphic_context[n]->compliance != SVGCompliance)
4386 cursor=0.0;
4387 break;
4388 }
4389 case ImagePrimitive:
4390 {
4391 if (primitive_info[j].coordinates != 2)
4392 {
4393 status=MagickFalse;
4394 break;
4395 }
4396 (void) GetNextToken(q,&q,extent,token);
4397 (void) CloneString(&primitive_info[j].text,token);
4398 break;
4399 }
4400 }
4401 mvg_info.offset=i;
4402 if (status == 0)
4403 break;
4404 primitive_info[i].primitive=UndefinedPrimitive;
4405 if ((draw_info->debug != MagickFalse) && (q > p))
4406 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4407 /*
4408 Sanity check.
4409 */
4410 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4411 &graphic_context[n]->affine));
4412 primitive_info=(*mvg_info.primitive_info);
4413 if (status == 0)
4414 break;
4415 status&=CheckPrimitiveExtent(&mvg_info,(double)
4416 graphic_context[n]->stroke_width);
4417 primitive_info=(*mvg_info.primitive_info);
4418 if (status == 0)
4419 break;
4420 if (i == 0)
4421 continue;
4422 /*
4423 Transform points.
4424 */
4425 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4426 {
4427 point=primitive_info[i].point;
4428 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4429 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4430 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4431 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4432 point=primitive_info[i].point;
4433 if (point.x < graphic_context[n]->bounds.x1)
4434 graphic_context[n]->bounds.x1=point.x;
4435 if (point.y < graphic_context[n]->bounds.y1)
4436 graphic_context[n]->bounds.y1=point.y;
4437 if (point.x > graphic_context[n]->bounds.x2)
4438 graphic_context[n]->bounds.x2=point.x;
4439 if (point.y > graphic_context[n]->bounds.y2)
4440 graphic_context[n]->bounds.y2=point.y;
4441 if (primitive_info[i].primitive == ImagePrimitive)
4442 break;
4443 if (i >= (ssize_t) number_points)
4444 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4445 }
4446 if (graphic_context[n]->render != MagickFalse)
4447 {
4448 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4449 (graphic_context[n]->clip_mask != (char *) NULL) &&
4450 (LocaleCompare(graphic_context[n]->clip_mask,
4451 graphic_context[n-1]->clip_mask) != 0))
4452 {
4453 const char
4454 *clip_path;
4455
4456 clip_path=(const char *) GetValueFromSplayTree(macros,
4457 graphic_context[n]->clip_mask);
4458 if (clip_path != (const char *) NULL)
4459 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4460 clip_path);
4461 status&=DrawClipPath(image,graphic_context[n],
4462 graphic_context[n]->clip_mask);
4463 }
4464 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4465 }
4466 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4467 primitive_extent);
4468 if (proceed == MagickFalse)
4469 break;
4470 if (status == 0)
4471 break;
4472 }
4473 if (draw_info->debug != MagickFalse)
4474 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4475 /*
4476 Relinquish resources.
4477 */
4478 macros=DestroySplayTree(macros);
4479 token=DestroyString(token);
4480 if (primitive_info != (PrimitiveInfo *) NULL)
4481 {
4482 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4483 if (primitive_info[i].text != (char *) NULL)
4484 primitive_info[i].text=DestroyString(primitive_info[i].text);
4485 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4486 }
4487 primitive=DestroyString(primitive);
4488 for ( ; n >= 0; n--)
4489 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4490 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4491 if (status == MagickFalse)
4492 ThrowBinaryImageException(DrawError,
4493 "NonconformingDrawingPrimitiveDefinition",keyword);
4494 return(status != 0 ? MagickTrue : MagickFalse);
4495}
4496
4497MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4498{
4499 return(RenderMVGContent(image,draw_info,0));
4500}
4501␌
4502/*
4503%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4504% %
4505% %
4506% %
4507% D r a w P a t t e r n P a t h %
4508% %
4509% %
4510% %
4511%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4512%
4513% DrawPatternPath() draws a pattern.
4514%
4515% The format of the DrawPatternPath method is:
4516%
4517% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4518% const char *name,Image **pattern)
4519%
4520% A description of each parameter follows:
4521%
4522% o image: the image.
4523%
4524% o draw_info: the draw info.
4525%
4526% o name: the pattern name.
4527%
4528% o image: the image.
4529%
4530*/
4531MagickExport MagickBooleanType DrawPatternPath(Image *image,
4532 const DrawInfo *draw_info,const char *name,Image **pattern)
4533{
4534 char
4535 property[MaxTextExtent];
4536
4537 const char
4538 *geometry,
4539 *path,
4540 *type;
4541
4542 DrawInfo
4543 *clone_info;
4544
4545 ImageInfo
4546 *image_info;
4547
4548 MagickBooleanType
4549 status;
4550
4551 assert(image != (Image *) NULL);
4552 assert(image->signature == MagickCoreSignature);
4553 assert(draw_info != (const DrawInfo *) NULL);
4554 if (IsEventLogging() != MagickFalse)
4555 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4556 assert(name != (const char *) NULL);
4557 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4558 path=GetImageArtifact(image,property);
4559 if (path == (const char *) NULL)
4560 return(MagickFalse);
4561 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4562 geometry=GetImageArtifact(image,property);
4563 if (geometry == (const char *) NULL)
4564 return(MagickFalse);
4565 if ((*pattern) != (Image *) NULL)
4566 *pattern=DestroyImage(*pattern);
4567 image_info=AcquireImageInfo();
4568 image_info->size=AcquireString(geometry);
4569 *pattern=AcquireImage(image_info);
4570 image_info=DestroyImageInfo(image_info);
4571 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4572 &image->exception);
4573 (void) SetImageBackgroundColor(*pattern);
4574 if (draw_info->debug != MagickFalse)
4575 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4576 "begin pattern-path %s %s",name,geometry);
4577 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4578 if (clone_info->fill_pattern != (Image *) NULL)
4579 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4580 if (clone_info->stroke_pattern != (Image *) NULL)
4581 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4582 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4583 type=GetImageArtifact(image,property);
4584 if (type != (const char *) NULL)
4585 clone_info->gradient.type=(GradientType) ParseCommandOption(
4586 MagickGradientOptions,MagickFalse,type);
4587 (void) CloneString(&clone_info->primitive,path);
4588 status=RenderMVGContent(*pattern,clone_info,0);
4589 clone_info=DestroyDrawInfo(clone_info);
4590 if (draw_info->debug != MagickFalse)
4591 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4592 return(status);
4593}
4594␌
4595/*
4596%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4597% %
4598% %
4599% %
4600+ D r a w P o l y g o n P r i m i t i v e %
4601% %
4602% %
4603% %
4604%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4605%
4606% DrawPolygonPrimitive() draws a polygon on the image.
4607%
4608% The format of the DrawPolygonPrimitive method is:
4609%
4610% MagickBooleanType DrawPolygonPrimitive(Image *image,
4611% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4612%
4613% A description of each parameter follows:
4614%
4615% o image: the image.
4616%
4617% o draw_info: the draw info.
4618%
4619% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4620%
4621*/
4622
4623static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4624{
4625 ssize_t
4626 i;
4627
4628 assert(polygon_info != (PolygonInfo **) NULL);
4629 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4630 if (polygon_info[i] != (PolygonInfo *) NULL)
4631 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4632 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4633 return(polygon_info);
4634}
4635
4636static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4637 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4638{
4639 PathInfo
4640 *magick_restrict path_info;
4641
4642 PolygonInfo
4643 **polygon_info;
4644
4645 size_t
4646 number_threads;
4647
4648 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4649 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4650 sizeof(*polygon_info));
4651 if (polygon_info == (PolygonInfo **) NULL)
4652 {
4653 (void) ThrowMagickException(exception,GetMagickModule(),
4654 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4655 return((PolygonInfo **) NULL);
4656 }
4657 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4658 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4659 if (path_info == (PathInfo *) NULL)
4660 return(DestroyPolygonTLS(polygon_info));
4661 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4662 if (polygon_info[0] == (PolygonInfo *) NULL)
4663 {
4664 (void) ThrowMagickException(exception,GetMagickModule(),
4665 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4666 return(DestroyPolygonTLS(polygon_info));
4667 }
4668 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4669 return(polygon_info);
4670}
4671
4672static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4673 const size_t number_threads,ExceptionInfo *exception)
4674{
4675 ssize_t
4676 i;
4677
4678 for (i=1; i < (ssize_t) number_threads; i++)
4679 {
4680 EdgeInfo
4681 *edge_info;
4682
4683 ssize_t
4684 j;
4685
4686 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4687 sizeof(*polygon_info[i]));
4688 if (polygon_info[i] == (PolygonInfo *) NULL)
4689 {
4690 (void) ThrowMagickException(exception,GetMagickModule(),
4691 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4692 return(MagickFalse);
4693 }
4694 polygon_info[i]->number_edges=0;
4695 edge_info=polygon_info[0]->edges;
4696 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4697 polygon_info[0]->number_edges,sizeof(*edge_info));
4698 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4699 {
4700 (void) ThrowMagickException(exception,GetMagickModule(),
4701 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4702 return(MagickFalse);
4703 }
4704 (void) memcpy(polygon_info[i]->edges,edge_info,
4705 polygon_info[0]->number_edges*sizeof(*edge_info));
4706 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4707 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4708 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4709 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4710 {
4711 edge_info=polygon_info[0]->edges+j;
4712 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4713 edge_info->number_points,sizeof(*edge_info));
4714 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4715 {
4716 (void) ThrowMagickException(exception,GetMagickModule(),
4717 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4718 return(MagickFalse);
4719 }
4720 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4721 edge_info->number_points*sizeof(*edge_info->points));
4722 }
4723 }
4724 return(MagickTrue);
4725}
4726
4727static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4728{
4729 assert(edge < (ssize_t) polygon_info->number_edges);
4730 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4731 polygon_info->edges[edge].points);
4732 polygon_info->number_edges--;
4733 if (edge < (ssize_t) polygon_info->number_edges)
4734 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4735 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4736 return(polygon_info->number_edges);
4737}
4738
4739static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4740 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4741 const ssize_t y,double *stroke_opacity)
4742{
4743 double
4744 alpha,
4745 beta,
4746 distance,
4747 subpath_opacity;
4748
4749 PointInfo
4750 delta;
4751
4752 EdgeInfo
4753 *p;
4754
4755 const PointInfo
4756 *q;
4757
4758 ssize_t
4759 i;
4760
4761 ssize_t
4762 j,
4763 winding_number;
4764
4765 /*
4766 Compute fill & stroke opacity for this (x,y) point.
4767 */
4768 *stroke_opacity=0.0;
4769 subpath_opacity=0.0;
4770 p=polygon_info->edges;
4771 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4772 {
4773 if ((double) y <= (p->bounds.y1-mid-0.5))
4774 break;
4775 if ((double) y > (p->bounds.y2+mid+0.5))
4776 {
4777 p--;
4778 (void) DestroyEdge(polygon_info,j--);
4779 continue;
4780 }
4781 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4782 ((double) x > (p->bounds.x2+mid+0.5)))
4783 continue;
4784 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4785 for ( ; i < (ssize_t) p->number_points; i++)
4786 {
4787 if ((double) y <= (p->points[i-1].y-mid-0.5))
4788 break;
4789 if ((double) y > (p->points[i].y+mid+0.5))
4790 continue;
4791 if (p->scanline != (double) y)
4792 {
4793 p->scanline=(double) y;
4794 p->highwater=(size_t) i;
4795 }
4796 /*
4797 Compute distance between a point and an edge.
4798 */
4799 q=p->points+i-1;
4800 delta.x=(q+1)->x-q->x;
4801 delta.y=(q+1)->y-q->y;
4802 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4803 if (beta <= 0.0)
4804 {
4805 delta.x=(double) x-q->x;
4806 delta.y=(double) y-q->y;
4807 distance=delta.x*delta.x+delta.y*delta.y;
4808 }
4809 else
4810 {
4811 alpha=delta.x*delta.x+delta.y*delta.y;
4812 if (beta >= alpha)
4813 {
4814 delta.x=(double) x-(q+1)->x;
4815 delta.y=(double) y-(q+1)->y;
4816 distance=delta.x*delta.x+delta.y*delta.y;
4817 }
4818 else
4819 {
4820 alpha=MagickSafeReciprocal(alpha);
4821 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4822 distance=alpha*beta*beta;
4823 }
4824 }
4825 /*
4826 Compute stroke & subpath opacity.
4827 */
4828 beta=0.0;
4829 if (p->ghostline == MagickFalse)
4830 {
4831 alpha=mid+0.5;
4832 if ((*stroke_opacity < 1.0) &&
4833 (distance <= ((alpha+0.25)*(alpha+0.25))))
4834 {
4835 alpha=mid-0.5;
4836 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4837 *stroke_opacity=1.0;
4838 else
4839 {
4840 beta=1.0;
4841 if (fabs(distance-1.0) >= MagickEpsilon)
4842 beta=sqrt((double) distance);
4843 alpha=beta-mid-0.5;
4844 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4845 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4846 }
4847 }
4848 }
4849 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4850 continue;
4851 if (distance <= 0.0)
4852 {
4853 subpath_opacity=1.0;
4854 continue;
4855 }
4856 if (distance > 1.0)
4857 continue;
4858 if (fabs(beta) < MagickEpsilon)
4859 {
4860 beta=1.0;
4861 if (fabs(distance-1.0) >= MagickEpsilon)
4862 beta=sqrt(distance);
4863 }
4864 alpha=beta-1.0;
4865 if (subpath_opacity < (alpha*alpha))
4866 subpath_opacity=alpha*alpha;
4867 }
4868 }
4869 /*
4870 Compute fill opacity.
4871 */
4872 if (fill == MagickFalse)
4873 return(0.0);
4874 if (subpath_opacity >= 1.0)
4875 return(1.0);
4876 /*
4877 Determine winding number.
4878 */
4879 winding_number=0;
4880 p=polygon_info->edges;
4881 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4882 {
4883 if ((double) y <= p->bounds.y1)
4884 break;
4885 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4886 continue;
4887 if ((double) x > p->bounds.x2)
4888 {
4889 winding_number+=p->direction != 0 ? 1 : -1;
4890 continue;
4891 }
4892 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4893 for ( ; i < (ssize_t) (p->number_points-1); i++)
4894 if ((double) y <= p->points[i].y)
4895 break;
4896 q=p->points+i-1;
4897 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4898 winding_number+=p->direction != 0 ? 1 : -1;
4899 }
4900 if (fill_rule != NonZeroRule)
4901 {
4902 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4903 return(1.0);
4904 }
4905 else
4906 if (MagickAbsoluteValue(winding_number) != 0)
4907 return(1.0);
4908 return(subpath_opacity);
4909}
4910
4911static MagickBooleanType DrawPolygonPrimitive(Image *image,
4912 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4913{
4914 typedef struct _ExtentInfo
4915 {
4916 ssize_t
4917 x1,
4918 y1,
4919 x2,
4920 y2;
4921 } ExtentInfo;
4922
4923 CacheView
4924 *image_view;
4925
4926 const char
4927 *artifact;
4928
4929 double
4930 mid;
4931
4932 ExceptionInfo
4933 *exception;
4934
4935 ExtentInfo
4936 poly_extent;
4937
4938 MagickBooleanType
4939 fill,
4940 status;
4941
4942 PolygonInfo
4943 **magick_restrict polygon_info;
4944
4945 EdgeInfo
4946 *p;
4947
4948 SegmentInfo
4949 bounds;
4950
4951 size_t
4952 number_threads = 1;
4953
4954 ssize_t
4955 i,
4956 y;
4957
4958 assert(image != (Image *) NULL);
4959 assert(image->signature == MagickCoreSignature);
4960 assert(draw_info != (DrawInfo *) NULL);
4961 assert(draw_info->signature == MagickCoreSignature);
4962 assert(primitive_info != (PrimitiveInfo *) NULL);
4963 if (IsEventLogging() != MagickFalse)
4964 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4965 if (primitive_info->coordinates <= 1)
4966 return(MagickTrue);
4967 /*
4968 Compute bounding box.
4969 */
4970 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4971 if (polygon_info == (PolygonInfo **) NULL)
4972 return(MagickFalse);
4973 if (draw_info->debug != MagickFalse)
4974 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4975 fill=(primitive_info->method == FillToBorderMethod) ||
4976 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4977 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4978 bounds=polygon_info[0]->edges[0].bounds;
4979 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4980 if (IsStringTrue(artifact) != MagickFalse)
4981 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4982 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4983 {
4984 p=polygon_info[0]->edges+i;
4985 if (p->bounds.x1 < bounds.x1)
4986 bounds.x1=p->bounds.x1;
4987 if (p->bounds.y1 < bounds.y1)
4988 bounds.y1=p->bounds.y1;
4989 if (p->bounds.x2 > bounds.x2)
4990 bounds.x2=p->bounds.x2;
4991 if (p->bounds.y2 > bounds.y2)
4992 bounds.y2=p->bounds.y2;
4993 }
4994 bounds.x1-=(mid+1.0);
4995 bounds.y1-=(mid+1.0);
4996 bounds.x2+=(mid+1.0);
4997 bounds.y2+=(mid+1.0);
4998 if ((bounds.x1 >= (double) image->columns) ||
4999 (bounds.y1 >= (double) image->rows) ||
5000 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
5001 {
5002 polygon_info=DestroyPolygonTLS(polygon_info);
5003 return(MagickTrue); /* virtual polygon */
5004 }
5005 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5006 (double) image->columns-1.0 : bounds.x1;
5007 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5008 (double) image->rows-1.0 : bounds.y1;
5009 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5010 (double) image->columns-1.0 : bounds.x2;
5011 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5012 (double) image->rows-1.0 : bounds.y2;
5013 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5014 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5015 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5016 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5017 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5018 poly_extent.y1+1,1);
5019 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5020 if (status == MagickFalse)
5021 {
5022 polygon_info=DestroyPolygonTLS(polygon_info);
5023 return(status);
5024 }
5025 status=MagickTrue;
5026 exception=(&image->exception);
5027 image_view=AcquireAuthenticCacheView(image,exception);
5028 if ((primitive_info->coordinates == 1) ||
5029 (polygon_info[0]->number_edges == 0))
5030 {
5031 /*
5032 Draw point.
5033 */
5034#if defined(MAGICKCORE_OPENMP_SUPPORT)
5035 #pragma omp parallel for schedule(static) shared(status) \
5036 num_threads(number_threads)
5037#endif
5038 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5039 {
5040 MagickBooleanType
5041 sync;
5042
5043 PixelPacket
5044 *magick_restrict q;
5045
5046 ssize_t
5047 x;
5048
5049 if (status == MagickFalse)
5050 continue;
5051 x=poly_extent.x1;
5052 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5053 x+1),1,exception);
5054 if (q == (PixelPacket *) NULL)
5055 {
5056 status=MagickFalse;
5057 continue;
5058 }
5059 for ( ; x <= poly_extent.x2; x++)
5060 {
5061 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5062 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5063 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5064 q++;
5065 }
5066 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5067 if (sync == MagickFalse)
5068 status=MagickFalse;
5069 }
5070 image_view=DestroyCacheView(image_view);
5071 polygon_info=DestroyPolygonTLS(polygon_info);
5072 if (draw_info->debug != MagickFalse)
5073 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5074 " end draw-polygon");
5075 return(status);
5076 }
5077 /*
5078 Draw polygon or line.
5079 */
5080 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5081 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5082#if defined(MAGICKCORE_OPENMP_SUPPORT)
5083 #pragma omp parallel for schedule(static) shared(status) \
5084 num_threads(number_threads)
5085#endif
5086 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5087 {
5088 const int
5089 id = GetOpenMPThreadId();
5090
5091 PixelPacket
5092 fill_color,
5093 stroke_color;
5094
5095 PixelPacket
5096 *magick_restrict q;
5097
5098 ssize_t
5099 x;
5100
5101 if (status == MagickFalse)
5102 continue;
5103 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5104 (poly_extent.x2-poly_extent.x1+1),1,exception);
5105 if (q == (PixelPacket *) NULL)
5106 {
5107 status=MagickFalse;
5108 continue;
5109 }
5110 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5111 {
5112 double
5113 fill_opacity,
5114 stroke_opacity;
5115
5116 /*
5117 Fill and/or stroke.
5118 */
5119 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5120 draw_info->fill_rule,x,y,&stroke_opacity);
5121 if (draw_info->stroke_antialias == MagickFalse)
5122 {
5123 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5124 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5125 }
5126 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5127 &fill_color);
5128 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5129 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5130 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5131 (MagickRealType) q->opacity,q);
5132 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5133 &stroke_color);
5134 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5135 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5136 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5137 (MagickRealType) q->opacity,q);
5138 q++;
5139 }
5140 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5141 status=MagickFalse;
5142 }
5143 image_view=DestroyCacheView(image_view);
5144 polygon_info=DestroyPolygonTLS(polygon_info);
5145 if (draw_info->debug != MagickFalse)
5146 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5147 return(status);
5148}
5149␌
5150/*
5151%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5152% %
5153% %
5154% %
5155% D r a w P r i m i t i v e %
5156% %
5157% %
5158% %
5159%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5160%
5161% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5162%
5163% The format of the DrawPrimitive method is:
5164%
5165% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5166% PrimitiveInfo *primitive_info)
5167%
5168% A description of each parameter follows:
5169%
5170% o image: the image.
5171%
5172% o draw_info: the draw info.
5173%
5174% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5175%
5176*/
5177static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5178{
5179 const char
5180 *methods[] =
5181 {
5182 "point",
5183 "replace",
5184 "floodfill",
5185 "filltoborder",
5186 "reset",
5187 "?"
5188 };
5189
5190 PointInfo
5191 p,
5192 q,
5193 point;
5194
5195 ssize_t
5196 i,
5197 x;
5198
5199 ssize_t
5200 coordinates,
5201 y;
5202
5203 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5204 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5205 switch (primitive_info->primitive)
5206 {
5207 case PointPrimitive:
5208 {
5209 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5210 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5211 methods[primitive_info->method]);
5212 return;
5213 }
5214 case ColorPrimitive:
5215 {
5216 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5217 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5218 methods[primitive_info->method]);
5219 return;
5220 }
5221 case MattePrimitive:
5222 {
5223 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5224 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5225 methods[primitive_info->method]);
5226 return;
5227 }
5228 case TextPrimitive:
5229 {
5230 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5231 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5232 return;
5233 }
5234 case ImagePrimitive:
5235 {
5236 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5237 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5238 return;
5239 }
5240 default:
5241 break;
5242 }
5243 coordinates=0;
5244 p=primitive_info[0].point;
5245 q.x=(-1.0);
5246 q.y=(-1.0);
5247 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5248 {
5249 point=primitive_info[i].point;
5250 if (coordinates <= 0)
5251 {
5252 coordinates=(ssize_t) primitive_info[i].coordinates;
5253 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5254 " begin open (%.20g)",(double) coordinates);
5255 p=point;
5256 }
5257 point=primitive_info[i].point;
5258 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5259 (fabs(q.y-point.y) >= MagickEpsilon))
5260 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5261 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5262 else
5263 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5264 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5265 q=point;
5266 coordinates--;
5267 if (coordinates > 0)
5268 continue;
5269 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5270 (fabs(p.y-point.y) >= MagickEpsilon))
5271 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5272 (double) coordinates);
5273 else
5274 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5275 (double) coordinates);
5276 }
5277}
5278
5279MagickExport MagickBooleanType DrawPrimitive(Image *image,
5280 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5281{
5282 CacheView
5283 *image_view;
5284
5285 ExceptionInfo
5286 *exception;
5287
5288 MagickStatusType
5289 status;
5290
5291 ssize_t
5292 i,
5293 x;
5294
5295 ssize_t
5296 y;
5297
5298 if (draw_info->debug != MagickFalse)
5299 {
5300 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5301 " begin draw-primitive");
5302 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5303 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5304 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5305 draw_info->affine.tx,draw_info->affine.ty);
5306 }
5307 exception=(&image->exception);
5308 status=MagickTrue;
5309 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5310 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5311 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5312 status=SetImageColorspace(image,sRGBColorspace);
5313 if (draw_info->compliance == SVGCompliance)
5314 {
5315 status&=SetImageClipMask(image,draw_info->clipping_mask);
5316 status&=SetImageMask(image,draw_info->composite_mask);
5317 }
5318 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5319 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5320 image_view=AcquireAuthenticCacheView(image,exception);
5321 switch (primitive_info->primitive)
5322 {
5323 case ColorPrimitive:
5324 {
5325 switch (primitive_info->method)
5326 {
5327 case PointMethod:
5328 default:
5329 {
5330 PixelPacket
5331 *q;
5332
5333 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5334 if (q == (PixelPacket *) NULL)
5335 break;
5336 (void) GetFillColor(draw_info,x,y,q);
5337 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5338 break;
5339 }
5340 case ReplaceMethod:
5341 {
5342 PixelPacket
5343 target;
5344
5345 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5346 for (y=0; y < (ssize_t) image->rows; y++)
5347 {
5348 PixelPacket
5349 *magick_restrict q;
5350
5351 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5352 exception);
5353 if (q == (PixelPacket *) NULL)
5354 break;
5355 for (x=0; x < (ssize_t) image->columns; x++)
5356 {
5357 if (IsColorSimilar(image,q,&target) == MagickFalse)
5358 {
5359 q++;
5360 continue;
5361 }
5362 (void) GetFillColor(draw_info,x,y,q);
5363 q++;
5364 }
5365 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5366 if (status == MagickFalse)
5367 break;
5368 }
5369 break;
5370 }
5371 case FloodfillMethod:
5372 case FillToBorderMethod:
5373 {
5374 MagickPixelPacket
5375 target;
5376
5377 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5378 if (primitive_info->method == FillToBorderMethod)
5379 {
5380 target.red=(MagickRealType) draw_info->border_color.red;
5381 target.green=(MagickRealType) draw_info->border_color.green;
5382 target.blue=(MagickRealType) draw_info->border_color.blue;
5383 }
5384 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5385 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5386 MagickTrue);
5387 break;
5388 }
5389 case ResetMethod:
5390 {
5391 for (y=0; y < (ssize_t) image->rows; y++)
5392 {
5393 PixelPacket
5394 *magick_restrict q;
5395
5396 ssize_t
5397 x;
5398
5399 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5400 exception);
5401 if (q == (PixelPacket *) NULL)
5402 break;
5403 for (x=0; x < (ssize_t) image->columns; x++)
5404 {
5405 (void) GetFillColor(draw_info,x,y,q);
5406 q++;
5407 }
5408 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5409 if (status == MagickFalse)
5410 break;
5411 }
5412 break;
5413 }
5414 }
5415 break;
5416 }
5417 case MattePrimitive:
5418 {
5419 if (image->matte == MagickFalse)
5420 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5421 switch (primitive_info->method)
5422 {
5423 case PointMethod:
5424 default:
5425 {
5426 PixelPacket
5427 pixel;
5428
5429 PixelPacket
5430 *q;
5431
5432 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5433 if (q == (PixelPacket *) NULL)
5434 break;
5435 (void) GetFillColor(draw_info,x,y,&pixel);
5436 SetPixelOpacity(q,pixel.opacity);
5437 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5438 break;
5439 }
5440 case ReplaceMethod:
5441 {
5442 PixelPacket
5443 pixel,
5444 target;
5445
5446 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5447 for (y=0; y < (ssize_t) image->rows; y++)
5448 {
5449 PixelPacket
5450 *magick_restrict q;
5451
5452 ssize_t
5453 x;
5454
5455 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5456 exception);
5457 if (q == (PixelPacket *) NULL)
5458 break;
5459 for (x=0; x < (ssize_t) image->columns; x++)
5460 {
5461 if (IsColorSimilar(image,q,&target) == MagickFalse)
5462 {
5463 q++;
5464 continue;
5465 }
5466 (void) GetFillColor(draw_info,x,y,&pixel);
5467 SetPixelOpacity(q,pixel.opacity);
5468 q++;
5469 }
5470 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5471 if (status == MagickFalse)
5472 break;
5473 }
5474 break;
5475 }
5476 case FloodfillMethod:
5477 case FillToBorderMethod:
5478 {
5479 MagickPixelPacket
5480 target;
5481
5482 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5483 if (primitive_info->method == FillToBorderMethod)
5484 {
5485 target.red=(MagickRealType) draw_info->border_color.red;
5486 target.green=(MagickRealType) draw_info->border_color.green;
5487 target.blue=(MagickRealType) draw_info->border_color.blue;
5488 }
5489 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5490 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5491 MagickTrue);
5492 break;
5493 }
5494 case ResetMethod:
5495 {
5496 PixelPacket
5497 pixel;
5498
5499 for (y=0; y < (ssize_t) image->rows; y++)
5500 {
5501 PixelPacket
5502 *magick_restrict q;
5503
5504 ssize_t
5505 x;
5506
5507 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5508 exception);
5509 if (q == (PixelPacket *) NULL)
5510 break;
5511 for (x=0; x < (ssize_t) image->columns; x++)
5512 {
5513 (void) GetFillColor(draw_info,x,y,&pixel);
5514 SetPixelOpacity(q,pixel.opacity);
5515 q++;
5516 }
5517 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5518 if (status == MagickFalse)
5519 break;
5520 }
5521 break;
5522 }
5523 }
5524 break;
5525 }
5526 case ImagePrimitive:
5527 {
5528 AffineMatrix
5529 affine;
5530
5531 char
5532 composite_geometry[MaxTextExtent];
5533
5534 Image
5535 *composite_image,
5536 *composite_images;
5537
5538 ImageInfo
5539 *clone_info;
5540
5541 RectangleInfo
5542 geometry;
5543
5544 ssize_t
5545 x1,
5546 y1;
5547
5548 if (primitive_info->text == (char *) NULL)
5549 break;
5550 clone_info=AcquireImageInfo();
5551 composite_images=(Image *) NULL;
5552 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5553 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5554 &image->exception);
5555 else
5556 if (*primitive_info->text != '\0')
5557 {
5558 /*
5559 Read composite image.
5560 */
5561 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5562 MagickPathExtent);
5563 (void) SetImageInfo(clone_info,1,exception);
5564 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5565 MagickPathExtent);
5566 if (clone_info->size != (char *) NULL)
5567 clone_info->size=DestroyString(clone_info->size);
5568 if (clone_info->extract != (char *) NULL)
5569 clone_info->extract=DestroyString(clone_info->extract);
5570 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5571 (LocaleCompare(clone_info->magick,"http") != 0) &&
5572 (LocaleCompare(clone_info->magick,"https") != 0) &&
5573 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5574 (LocaleCompare(clone_info->magick,"vid") != 0))
5575 composite_images=ReadImage(clone_info,exception);
5576 else
5577 (void) ThrowMagickException(exception,GetMagickModule(),
5578 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5579 }
5580 clone_info=DestroyImageInfo(clone_info);
5581 if (composite_images == (Image *) NULL)
5582 {
5583 status=0;
5584 break;
5585 }
5586 composite_image=RemoveFirstImageFromList(&composite_images);
5587 composite_images=DestroyImageList(composite_images);
5588 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5589 NULL,(void *) NULL);
5590 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5591 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5592 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5593 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5594 {
5595 char
5596 geometry[MaxTextExtent];
5597
5598 /*
5599 Resize image.
5600 */
5601 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5602 primitive_info[1].point.x,primitive_info[1].point.y);
5603 composite_image->filter=image->filter;
5604 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5605 }
5606 if (composite_image->matte == MagickFalse)
5607 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5608 if (draw_info->opacity != OpaqueOpacity)
5609 status&=SetImageOpacity(composite_image,draw_info->opacity);
5610 SetGeometry(image,&geometry);
5611 image->gravity=draw_info->gravity;
5612 geometry.x=x;
5613 geometry.y=y;
5614 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5615 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5616 composite_image->rows,(double) geometry.x,(double) geometry.y);
5617 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5618 &image->exception);
5619 affine=draw_info->affine;
5620 affine.tx=(double) geometry.x;
5621 affine.ty=(double) geometry.y;
5622 composite_image->interpolate=image->interpolate;
5623 if ((draw_info->compose == OverCompositeOp) ||
5624 (draw_info->compose == SrcOverCompositeOp))
5625 status&=DrawAffineImage(image,composite_image,&affine);
5626 else
5627 status&=CompositeImage(image,draw_info->compose,composite_image,
5628 geometry.x,geometry.y);
5629 composite_image=DestroyImage(composite_image);
5630 break;
5631 }
5632 case PointPrimitive:
5633 {
5634 PixelPacket
5635 fill_color;
5636
5637 PixelPacket
5638 *q;
5639
5640 if ((y < 0) || (y >= (ssize_t) image->rows))
5641 break;
5642 if ((x < 0) || (x >= (ssize_t) image->columns))
5643 break;
5644 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5645 if (q == (PixelPacket *) NULL)
5646 break;
5647 (void) GetFillColor(draw_info,x,y,&fill_color);
5648 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5649 (MagickRealType) q->opacity,q);
5650 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5651 break;
5652 }
5653 case TextPrimitive:
5654 {
5655 char
5656 geometry[MaxTextExtent];
5657
5658 DrawInfo
5659 *clone_info;
5660
5661 if (primitive_info->text == (char *) NULL)
5662 break;
5663 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5664 (void) CloneString(&clone_info->text,primitive_info->text);
5665 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5666 primitive_info->point.x,primitive_info->point.y);
5667 (void) CloneString(&clone_info->geometry,geometry);
5668 status&=AnnotateImage(image,clone_info);
5669 clone_info=DestroyDrawInfo(clone_info);
5670 break;
5671 }
5672 default:
5673 {
5674 double
5675 mid,
5676 scale;
5677
5678 DrawInfo
5679 *clone_info;
5680
5681 if (IsEventLogging() != MagickFalse)
5682 LogPrimitiveInfo(primitive_info);
5683 scale=ExpandAffine(&draw_info->affine);
5684 if ((draw_info->dash_pattern != (double *) NULL) &&
5685 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5686 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5687 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5688 {
5689 /*
5690 Draw dash polygon.
5691 */
5692 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5693 clone_info->stroke_width=0.0;
5694 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5695 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5696 clone_info=DestroyDrawInfo(clone_info);
5697 if (status != MagickFalse)
5698 status&=DrawDashPolygon(draw_info,primitive_info,image);
5699 break;
5700 }
5701 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5702 if ((mid > 1.0) &&
5703 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5704 (draw_info->stroke_pattern != (Image *) NULL)))
5705 {
5706 double
5707 x,
5708 y;
5709
5710 MagickBooleanType
5711 closed_path;
5712
5713 /*
5714 Draw strokes while respecting line cap/join attributes.
5715 */
5716 closed_path=primitive_info[0].closed_subpath;
5717 i=(ssize_t) primitive_info[0].coordinates;
5718 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5719 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5720 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5721 closed_path=MagickTrue;
5722 if ((((draw_info->linecap == RoundCap) ||
5723 (closed_path != MagickFalse)) &&
5724 (draw_info->linejoin == RoundJoin)) ||
5725 (primitive_info[i].primitive != UndefinedPrimitive))
5726 {
5727 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5728 break;
5729 }
5730 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5731 clone_info->stroke_width=0.0;
5732 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5733 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5734 clone_info=DestroyDrawInfo(clone_info);
5735 if (status != MagickFalse)
5736 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5737 break;
5738 }
5739 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5740 break;
5741 }
5742 }
5743 image_view=DestroyCacheView(image_view);
5744 if (draw_info->compliance == SVGCompliance)
5745 {
5746 status&=SetImageClipMask(image,(Image *) NULL);
5747 status&=SetImageMask(image,(Image *) NULL);
5748 }
5749 if (draw_info->debug != MagickFalse)
5750 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5751 return(status != 0 ? MagickTrue : MagickFalse);
5752}
5753␌
5754/*
5755%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5756% %
5757% %
5758% %
5759+ D r a w S t r o k e P o l y g o n %
5760% %
5761% %
5762% %
5763%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5764%
5765% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5766% the image while respecting the line cap and join attributes.
5767%
5768% The format of the DrawStrokePolygon method is:
5769%
5770% MagickBooleanType DrawStrokePolygon(Image *image,
5771% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5772%
5773% A description of each parameter follows:
5774%
5775% o image: the image.
5776%
5777% o draw_info: the draw info.
5778%
5779% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5780%
5781%
5782*/
5783
5784static MagickBooleanType DrawRoundLinecap(Image *image,
5785 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5786{
5787 PrimitiveInfo
5788 linecap[5];
5789
5790 ssize_t
5791 i;
5792
5793 for (i=0; i < 4; i++)
5794 linecap[i]=(*primitive_info);
5795 linecap[0].coordinates=4;
5796 linecap[1].point.x+=2.0*MagickEpsilon;
5797 linecap[2].point.x+=2.0*MagickEpsilon;
5798 linecap[2].point.y+=2.0*MagickEpsilon;
5799 linecap[3].point.y+=2.0*MagickEpsilon;
5800 linecap[4].primitive=UndefinedPrimitive;
5801 return(DrawPolygonPrimitive(image,draw_info,linecap));
5802}
5803
5804static MagickBooleanType DrawStrokePolygon(Image *image,
5805 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5806{
5807 DrawInfo
5808 *clone_info;
5809
5810 MagickBooleanType
5811 closed_path;
5812
5813 MagickStatusType
5814 status;
5815
5816 PrimitiveInfo
5817 *stroke_polygon;
5818
5819 const PrimitiveInfo
5820 *p,
5821 *q;
5822
5823 /*
5824 Draw stroked polygon.
5825 */
5826 if (draw_info->debug != MagickFalse)
5827 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5828 " begin draw-stroke-polygon");
5829 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5830 clone_info->fill=draw_info->stroke;
5831 if (clone_info->fill_pattern != (Image *) NULL)
5832 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5833 if (clone_info->stroke_pattern != (Image *) NULL)
5834 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5835 MagickTrue,&clone_info->stroke_pattern->exception);
5836 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5837 clone_info->stroke_width=0.0;
5838 clone_info->fill_rule=NonZeroRule;
5839 status=MagickTrue;
5840 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5841 {
5842 if (p->coordinates == 1)
5843 continue;
5844 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5845 if (stroke_polygon == (PrimitiveInfo *) NULL)
5846 {
5847 status=0;
5848 break;
5849 }
5850 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5851 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5852 if (status == 0)
5853 break;
5854 q=p+p->coordinates-1;
5855 closed_path=p->closed_subpath;
5856 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5857 {
5858 status&=DrawRoundLinecap(image,draw_info,p);
5859 status&=DrawRoundLinecap(image,draw_info,q);
5860 }
5861 }
5862 clone_info=DestroyDrawInfo(clone_info);
5863 if (draw_info->debug != MagickFalse)
5864 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5865 " end draw-stroke-polygon");
5866 return(status != 0 ? MagickTrue : MagickFalse);
5867}
5868␌
5869/*
5870%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5871% %
5872% %
5873% %
5874% G e t A f f i n e M a t r i x %
5875% %
5876% %
5877% %
5878%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5879%
5880% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5881% matrix.
5882%
5883% The format of the GetAffineMatrix method is:
5884%
5885% void GetAffineMatrix(AffineMatrix *affine_matrix)
5886%
5887% A description of each parameter follows:
5888%
5889% o affine_matrix: the affine matrix.
5890%
5891*/
5892MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5893{
5894 assert(affine_matrix != (AffineMatrix *) NULL);
5895 if (IsEventLogging() != MagickFalse)
5896 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5897 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5898 affine_matrix->sx=1.0;
5899 affine_matrix->sy=1.0;
5900}
5901␌
5902/*
5903%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5904% %
5905% %
5906% %
5907+ G e t D r a w I n f o %
5908% %
5909% %
5910% %
5911%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5912%
5913% GetDrawInfo() initializes draw_info to default values from image_info.
5914%
5915% The format of the GetDrawInfo method is:
5916%
5917% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5918%
5919% A description of each parameter follows:
5920%
5921% o image_info: the image info..
5922%
5923% o draw_info: the draw info.
5924%
5925*/
5926MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5927{
5928 char
5929 *next_token;
5930
5931 const char
5932 *option;
5933
5934 ExceptionInfo
5935 *exception;
5936
5937 /*
5938 Initialize draw attributes.
5939 */
5940 assert(draw_info != (DrawInfo *) NULL);
5941 if (IsEventLogging() != MagickFalse)
5942 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5943 (void) memset(draw_info,0,sizeof(*draw_info));
5944 draw_info->image_info=CloneImageInfo(image_info);
5945 GetAffineMatrix(&draw_info->affine);
5946 exception=AcquireExceptionInfo();
5947 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5948 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5949 draw_info->stroke_antialias=draw_info->image_info->antialias;
5950 draw_info->stroke_width=1.0;
5951 draw_info->fill_rule=EvenOddRule;
5952 draw_info->opacity=OpaqueOpacity;
5953 draw_info->fill_opacity=OpaqueOpacity;
5954 draw_info->stroke_opacity=OpaqueOpacity;
5955 draw_info->linecap=ButtCap;
5956 draw_info->linejoin=MiterJoin;
5957 draw_info->miterlimit=10;
5958 draw_info->decorate=NoDecoration;
5959 if (draw_info->image_info->font != (char *) NULL)
5960 draw_info->font=AcquireString(draw_info->image_info->font);
5961 if (draw_info->image_info->density != (char *) NULL)
5962 draw_info->density=AcquireString(draw_info->image_info->density);
5963 draw_info->text_antialias=draw_info->image_info->antialias;
5964 draw_info->pointsize=12.0;
5965 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5966 draw_info->pointsize=draw_info->image_info->pointsize;
5967 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5968 draw_info->border_color=draw_info->image_info->border_color;
5969 draw_info->compose=OverCompositeOp;
5970 if (draw_info->image_info->server_name != (char *) NULL)
5971 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5972 draw_info->render=MagickTrue;
5973 draw_info->clip_path=MagickFalse;
5974 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5975 MagickTrue : MagickFalse;
5976 option=GetImageOption(draw_info->image_info,"direction");
5977 if (option != (const char *) NULL)
5978 draw_info->direction=(DirectionType) ParseCommandOption(
5979 MagickDirectionOptions,MagickFalse,option);
5980 else
5981 draw_info->direction=UndefinedDirection;
5982 option=GetImageOption(draw_info->image_info,"encoding");
5983 if (option != (const char *) NULL)
5984 (void) CloneString(&draw_info->encoding,option);
5985 option=GetImageOption(draw_info->image_info,"family");
5986 if (option != (const char *) NULL)
5987 (void) CloneString(&draw_info->family,option);
5988 option=GetImageOption(draw_info->image_info,"fill");
5989 if (option != (const char *) NULL)
5990 (void) QueryColorDatabase(option,&draw_info->fill,exception);
5991 option=GetImageOption(draw_info->image_info,"gravity");
5992 if (option != (const char *) NULL)
5993 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5994 MagickFalse,option);
5995 option=GetImageOption(draw_info->image_info,"interline-spacing");
5996 if (option != (const char *) NULL)
5997 draw_info->interline_spacing=GetDrawValue(option,&next_token);
5998 option=GetImageOption(draw_info->image_info,"interword-spacing");
5999 if (option != (const char *) NULL)
6000 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6001 option=GetImageOption(draw_info->image_info,"kerning");
6002 if (option != (const char *) NULL)
6003 draw_info->kerning=GetDrawValue(option,&next_token);
6004 option=GetImageOption(draw_info->image_info,"stroke");
6005 if (option != (const char *) NULL)
6006 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6007 option=GetImageOption(draw_info->image_info,"strokewidth");
6008 if (option != (const char *) NULL)
6009 draw_info->stroke_width=GetDrawValue(option,&next_token);
6010 option=GetImageOption(draw_info->image_info,"style");
6011 if (option != (const char *) NULL)
6012 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6013 MagickFalse,option);
6014 option=GetImageOption(draw_info->image_info,"undercolor");
6015 if (option != (const char *) NULL)
6016 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6017 option=GetImageOption(draw_info->image_info,"weight");
6018 if (option != (const char *) NULL)
6019 {
6020 ssize_t
6021 weight;
6022
6023 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6024 if (weight == -1)
6025 weight=(ssize_t) StringToUnsignedLong(option);
6026 draw_info->weight=(size_t) weight;
6027 }
6028 exception=DestroyExceptionInfo(exception);
6029 draw_info->signature=MagickCoreSignature;
6030}
6031␌
6032/*
6033%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6034% %
6035% %
6036% %
6037+ P e r m u t a t e %
6038% %
6039% %
6040% %
6041%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6042%
6043% Permutate() returns the permutation of the (n,k).
6044%
6045% The format of the Permutate method is:
6046%
6047% void Permutate(ssize_t n,ssize_t k)
6048%
6049% A description of each parameter follows:
6050%
6051% o n:
6052%
6053% o k:
6054%
6055%
6056*/
6057static inline double Permutate(const ssize_t n,const ssize_t k)
6058{
6059 double
6060 r;
6061
6062 ssize_t
6063 i;
6064
6065 r=1.0;
6066 for (i=k+1; i <= n; i++)
6067 r*=i;
6068 for (i=1; i <= (n-k); i++)
6069 r/=i;
6070 return(r);
6071}
6072␌
6073/*
6074%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6075% %
6076% %
6077% %
6078+ T r a c e P r i m i t i v e %
6079% %
6080% %
6081% %
6082%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6083%
6084% TracePrimitive is a collection of methods for generating graphic
6085% primitives such as arcs, ellipses, paths, etc.
6086%
6087*/
6088
6089static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6090 const PointInfo end,const PointInfo degrees)
6091{
6092 PointInfo
6093 center,
6094 radius;
6095
6096 center.x=0.5*(end.x+start.x);
6097 center.y=0.5*(end.y+start.y);
6098 radius.x=fabs(center.x-start.x);
6099 radius.y=fabs(center.y-start.y);
6100 return(TraceEllipse(mvg_info,center,radius,degrees));
6101}
6102
6103static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6104 const PointInfo end,const PointInfo arc,const double angle,
6105 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6106{
6107 double
6108 alpha,
6109 beta,
6110 delta,
6111 factor,
6112 gamma,
6113 theta;
6114
6115 MagickStatusType
6116 status;
6117
6118 PointInfo
6119 center,
6120 points[3],
6121 radii;
6122
6123 double
6124 cosine,
6125 sine;
6126
6127 PrimitiveInfo
6128 *primitive_info;
6129
6130 PrimitiveInfo
6131 *p;
6132
6133 ssize_t
6134 i;
6135
6136 size_t
6137 arc_segments;
6138
6139 ssize_t
6140 offset;
6141
6142 offset=mvg_info->offset;
6143 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6144 primitive_info->coordinates=0;
6145 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6146 (fabs(start.y-end.y) < MagickEpsilon))
6147 return(TracePoint(primitive_info,end));
6148 radii.x=fabs(arc.x);
6149 radii.y=fabs(arc.y);
6150 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6151 return(TraceLine(primitive_info,start,end));
6152 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6153 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6154 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6155 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6156 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6157 (radii.y*radii.y);
6158 if (delta < MagickEpsilon)
6159 return(TraceLine(primitive_info,start,end));
6160 if (delta > 1.0)
6161 {
6162 radii.x*=sqrt((double) delta);
6163 radii.y*=sqrt((double) delta);
6164 }
6165 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6166 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6167 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6168 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6169 alpha=points[1].x-points[0].x;
6170 beta=points[1].y-points[0].y;
6171 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6172 return(TraceLine(primitive_info,start,end));
6173 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6174 if (factor <= 0.0)
6175 factor=0.0;
6176 else
6177 {
6178 factor=sqrt((double) factor);
6179 if (sweep == large_arc)
6180 factor=(-factor);
6181 }
6182 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6183 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6184 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6185 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6186 if ((theta < 0.0) && (sweep != MagickFalse))
6187 theta+=2.0*MagickPI;
6188 else
6189 if ((theta > 0.0) && (sweep == MagickFalse))
6190 theta-=2.0*MagickPI;
6191 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6192 MagickPI+MagickEpsilon)))));
6193 p=primitive_info;
6194 status=MagickTrue;
6195 for (i=0; i < (ssize_t) arc_segments; i++)
6196 {
6197 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6198 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6199 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6200 sin(fmod((double) beta,DegreesToRadians(360.0)));
6201 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6202 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6203 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6204 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6205 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6206 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6207 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6208 theta/arc_segments),DegreesToRadians(360.0))));
6209 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6210 theta/arc_segments),DegreesToRadians(360.0))));
6211 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6212 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6213 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6214 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6215 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6216 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6217 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6218 points[0].y);
6219 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6220 points[0].y);
6221 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6222 points[1].y);
6223 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6224 points[1].y);
6225 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6226 points[2].y);
6227 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6228 points[2].y);
6229 if (i == (ssize_t) (arc_segments-1))
6230 (p+3)->point=end;
6231 status&=TraceBezier(mvg_info,4);
6232 if (status == 0)
6233 break;
6234 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6235 mvg_info->offset+=p->coordinates;
6236 p+=(ptrdiff_t) p->coordinates;
6237 }
6238 if (status == 0)
6239 return(MagickFalse);
6240 mvg_info->offset=offset;
6241 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6242 primitive_info->coordinates=(size_t) (p-primitive_info);
6243 primitive_info->closed_subpath=MagickFalse;
6244 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6245 {
6246 p->primitive=primitive_info->primitive;
6247 p--;
6248 }
6249 return(MagickTrue);
6250}
6251
6252static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6253 const size_t number_coordinates)
6254{
6255 double
6256 alpha,
6257 *coefficients,
6258 weight;
6259
6260 PointInfo
6261 end,
6262 point,
6263 *points;
6264
6265 PrimitiveInfo
6266 *primitive_info;
6267
6268 PrimitiveInfo
6269 *p;
6270
6271 ssize_t
6272 i,
6273 j;
6274
6275 size_t
6276 control_points,
6277 quantum;
6278
6279 /*
6280 Allocate coefficients.
6281 */
6282 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6283 quantum=number_coordinates;
6284 for (i=0; i < (ssize_t) number_coordinates; i++)
6285 {
6286 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6287 {
6288 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6289 if (alpha > (double) GetMaxMemoryRequest())
6290 {
6291 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6292 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6293 return(MagickFalse);
6294 }
6295 if (alpha > (double) quantum)
6296 quantum=(size_t) alpha;
6297 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6298 if (alpha > (double) quantum)
6299 quantum=(size_t) alpha;
6300 }
6301 }
6302 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6303 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6304 if (quantum > (double) GetMaxMemoryRequest())
6305 {
6306 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6307 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6308 return(MagickFalse);
6309 }
6310 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6311 sizeof(*coefficients));
6312 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6313 sizeof(*points));
6314 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6315 {
6316 if (points != (PointInfo *) NULL)
6317 points=(PointInfo *) RelinquishMagickMemory(points);
6318 if (coefficients != (double *) NULL)
6319 coefficients=(double *) RelinquishMagickMemory(coefficients);
6320 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6321 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6322 return(MagickFalse);
6323 }
6324 control_points=quantum*number_coordinates;
6325 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6326 {
6327 points=(PointInfo *) RelinquishMagickMemory(points);
6328 coefficients=(double *) RelinquishMagickMemory(coefficients);
6329 return(MagickFalse);
6330 }
6331 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6332 /*
6333 Compute bezier points.
6334 */
6335 end=primitive_info[number_coordinates-1].point;
6336 for (i=0; i < (ssize_t) number_coordinates; i++)
6337 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6338 weight=0.0;
6339 for (i=0; i < (ssize_t) control_points; i++)
6340 {
6341 p=primitive_info;
6342 point.x=0.0;
6343 point.y=0.0;
6344 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6345 for (j=0; j < (ssize_t) number_coordinates; j++)
6346 {
6347 point.x+=alpha*coefficients[j]*p->point.x;
6348 point.y+=alpha*coefficients[j]*p->point.y;
6349 alpha*=weight/(1.0-weight);
6350 p++;
6351 }
6352 points[i]=point;
6353 weight+=1.0/control_points;
6354 }
6355 /*
6356 Bezier curves are just short segmented polys.
6357 */
6358 p=primitive_info;
6359 for (i=0; i < (ssize_t) control_points; i++)
6360 {
6361 if (TracePoint(p,points[i]) == MagickFalse)
6362 {
6363 points=(PointInfo *) RelinquishMagickMemory(points);
6364 coefficients=(double *) RelinquishMagickMemory(coefficients);
6365 return(MagickFalse);
6366 }
6367 p+=(ptrdiff_t) p->coordinates;
6368 }
6369 if (TracePoint(p,end) == MagickFalse)
6370 {
6371 points=(PointInfo *) RelinquishMagickMemory(points);
6372 coefficients=(double *) RelinquishMagickMemory(coefficients);
6373 return(MagickFalse);
6374 }
6375 p+=(ptrdiff_t) p->coordinates;
6376 primitive_info->coordinates=(size_t) (p-primitive_info);
6377 primitive_info->closed_subpath=MagickFalse;
6378 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6379 {
6380 p->primitive=primitive_info->primitive;
6381 p--;
6382 }
6383 points=(PointInfo *) RelinquishMagickMemory(points);
6384 coefficients=(double *) RelinquishMagickMemory(coefficients);
6385 return(MagickTrue);
6386}
6387
6388static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6389 const PointInfo end)
6390{
6391 double
6392 alpha,
6393 beta,
6394 radius;
6395
6396 PointInfo
6397 offset,
6398 degrees;
6399
6400 alpha=end.x-start.x;
6401 beta=end.y-start.y;
6402 radius=hypot((double) alpha,(double) beta);
6403 offset.x=(double) radius;
6404 offset.y=(double) radius;
6405 degrees.x=0.0;
6406 degrees.y=360.0;
6407 return(TraceEllipse(mvg_info,start,offset,degrees));
6408}
6409
6410static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6411 const PointInfo radii,const PointInfo arc)
6412{
6413 double
6414 coordinates,
6415 delta,
6416 step,
6417 x,
6418 y;
6419
6420 PointInfo
6421 angle,
6422 point;
6423
6424 PrimitiveInfo
6425 *primitive_info;
6426
6427 PrimitiveInfo
6428 *p;
6429
6430 ssize_t
6431 i;
6432
6433 /*
6434 Ellipses are just short segmented polys.
6435 */
6436 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6437 primitive_info->coordinates=0;
6438 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6439 return(MagickTrue);
6440 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6441 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6442 angle.x=DegreesToRadians(arc.x);
6443 y=arc.y;
6444 while (y < arc.x)
6445 y+=360.0;
6446 angle.y=DegreesToRadians(y);
6447 coordinates=ceil((angle.y-angle.x)/step+1.0);
6448 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6449 return(MagickFalse);
6450 i=0;
6451 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6452 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6453 {
6454 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6455 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6456 if (i++ >= (ssize_t) coordinates)
6457 break;
6458 if (TracePoint(p,point) == MagickFalse)
6459 return(MagickFalse);
6460 p+=(ptrdiff_t) p->coordinates;
6461 }
6462 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6463 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6464 if (TracePoint(p,point) == MagickFalse)
6465 return(MagickFalse);
6466 p+=(ptrdiff_t) p->coordinates;
6467 primitive_info->coordinates=(size_t) (p-primitive_info);
6468 primitive_info->closed_subpath=MagickFalse;
6469 x=fabs(primitive_info[0].point.x-
6470 primitive_info[primitive_info->coordinates-1].point.x);
6471 y=fabs(primitive_info[0].point.y-
6472 primitive_info[primitive_info->coordinates-1].point.y);
6473 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6474 primitive_info->closed_subpath=MagickTrue;
6475 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6476 {
6477 p->primitive=primitive_info->primitive;
6478 p--;
6479 }
6480 return(MagickTrue);
6481}
6482
6483static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6484 const PointInfo start,const PointInfo end)
6485{
6486 if (TracePoint(primitive_info,start) == MagickFalse)
6487 return(MagickFalse);
6488 if (TracePoint(primitive_info+1,end) == MagickFalse)
6489 return(MagickFalse);
6490 (primitive_info+1)->primitive=primitive_info->primitive;
6491 primitive_info->coordinates=2;
6492 primitive_info->closed_subpath=MagickFalse;
6493 return(MagickTrue);
6494}
6495
6496static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6497{
6498 char
6499 *next_token,
6500 token[MaxTextExtent] = "";
6501
6502 const char
6503 *p;
6504
6505 double
6506 x,
6507 y;
6508
6509 int
6510 attribute,
6511 last_attribute;
6512
6513 MagickStatusType
6514 status;
6515
6516 PointInfo
6517 end = {0.0, 0.0},
6518 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6519 point = {0.0, 0.0},
6520 start = {0.0, 0.0};
6521
6522 PrimitiveInfo
6523 *primitive_info;
6524
6525 PrimitiveType
6526 primitive_type;
6527
6528 PrimitiveInfo
6529 *q;
6530
6531 ssize_t
6532 i;
6533
6534 size_t
6535 number_coordinates,
6536 z_count;
6537
6538 ssize_t
6539 subpath_offset;
6540
6541 subpath_offset=mvg_info->offset;
6542 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6543 status=MagickTrue;
6544 attribute=0;
6545 number_coordinates=0;
6546 z_count=0;
6547 *token='\0';
6548 primitive_type=primitive_info->primitive;
6549 q=primitive_info;
6550 for (p=path; *p != '\0'; )
6551 {
6552 if (status == MagickFalse)
6553 break;
6554 while (isspace((int) ((unsigned char) *p)) != 0)
6555 p++;
6556 if (*p == '\0')
6557 break;
6558 last_attribute=attribute;
6559 attribute=(int) (*p++);
6560 switch (attribute)
6561 {
6562 case 'a':
6563 case 'A':
6564 {
6565 double
6566 angle = 0.0;
6567
6568 MagickBooleanType
6569 large_arc = MagickFalse,
6570 sweep = MagickFalse;
6571
6572 PointInfo
6573 arc = {0.0, 0.0};
6574
6575 /*
6576 Elliptical arc.
6577 */
6578 do
6579 {
6580 (void) GetNextToken(p,&p,MaxTextExtent,token);
6581 if (*token == ',')
6582 (void) GetNextToken(p,&p,MaxTextExtent,token);
6583 arc.x=GetDrawValue(token,&next_token);
6584 if (token == next_token)
6585 ThrowPointExpectedException(image,token);
6586 (void) GetNextToken(p,&p,MaxTextExtent,token);
6587 if (*token == ',')
6588 (void) GetNextToken(p,&p,MaxTextExtent,token);
6589 arc.y=GetDrawValue(token,&next_token);
6590 if (token == next_token)
6591 ThrowPointExpectedException(image,token);
6592 (void) GetNextToken(p,&p,MaxTextExtent,token);
6593 if (*token == ',')
6594 (void) GetNextToken(p,&p,MaxTextExtent,token);
6595 angle=GetDrawValue(token,&next_token);
6596 if (token == next_token)
6597 ThrowPointExpectedException(image,token);
6598 (void) GetNextToken(p,&p,MaxTextExtent,token);
6599 if (*token == ',')
6600 (void) GetNextToken(p,&p,MaxTextExtent,token);
6601 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6602 (void) GetNextToken(p,&p,MaxTextExtent,token);
6603 if (*token == ',')
6604 (void) GetNextToken(p,&p,MaxTextExtent,token);
6605 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6606 if (*token == ',')
6607 (void) GetNextToken(p,&p,MaxTextExtent,token);
6608 (void) GetNextToken(p,&p,MaxTextExtent,token);
6609 if (*token == ',')
6610 (void) GetNextToken(p,&p,MaxTextExtent,token);
6611 x=GetDrawValue(token,&next_token);
6612 if (token == next_token)
6613 ThrowPointExpectedException(image,token);
6614 (void) GetNextToken(p,&p,MaxTextExtent,token);
6615 if (*token == ',')
6616 (void) GetNextToken(p,&p,MaxTextExtent,token);
6617 y=GetDrawValue(token,&next_token);
6618 if (token == next_token)
6619 ThrowPointExpectedException(image,token);
6620 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6621 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6622 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6623 q=(*mvg_info->primitive_info)+mvg_info->offset;
6624 mvg_info->offset+=q->coordinates;
6625 q+=(ptrdiff_t) q->coordinates;
6626 point=end;
6627 while (isspace((int) ((unsigned char) *p)) != 0)
6628 p++;
6629 if (*p == ',')
6630 p++;
6631 } while (IsPoint(p) != MagickFalse);
6632 break;
6633 }
6634 case 'c':
6635 case 'C':
6636 {
6637 /*
6638 Cubic Bézier curve.
6639 */
6640 do
6641 {
6642 points[0]=point;
6643 for (i=1; i < 4; i++)
6644 {
6645 (void) GetNextToken(p,&p,MaxTextExtent,token);
6646 if (*token == ',')
6647 (void) GetNextToken(p,&p,MaxTextExtent,token);
6648 x=GetDrawValue(token,&next_token);
6649 if (token == next_token)
6650 ThrowPointExpectedException(image,token);
6651 (void) GetNextToken(p,&p,MaxTextExtent,token);
6652 if (*token == ',')
6653 (void) GetNextToken(p,&p,MaxTextExtent,token);
6654 y=GetDrawValue(token,&next_token);
6655 if (token == next_token)
6656 ThrowPointExpectedException(image,token);
6657 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6658 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6659 points[i]=end;
6660 }
6661 for (i=0; i < 4; i++)
6662 (q+i)->point=points[i];
6663 if (TraceBezier(mvg_info,4) == MagickFalse)
6664 return(-1);
6665 q=(*mvg_info->primitive_info)+mvg_info->offset;
6666 mvg_info->offset+=q->coordinates;
6667 q+=(ptrdiff_t) q->coordinates;
6668 point=end;
6669 while (isspace((int) ((unsigned char) *p)) != 0)
6670 p++;
6671 if (*p == ',')
6672 p++;
6673 } while (IsPoint(p) != MagickFalse);
6674 break;
6675 }
6676 case 'H':
6677 case 'h':
6678 {
6679 do
6680 {
6681 (void) GetNextToken(p,&p,MaxTextExtent,token);
6682 if (*token == ',')
6683 (void) GetNextToken(p,&p,MaxTextExtent,token);
6684 x=GetDrawValue(token,&next_token);
6685 if (token == next_token)
6686 ThrowPointExpectedException(image,token);
6687 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6688 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6689 return(-1);
6690 q=(*mvg_info->primitive_info)+mvg_info->offset;
6691 if (TracePoint(q,point) == MagickFalse)
6692 return(-1);
6693 mvg_info->offset+=q->coordinates;
6694 q+=(ptrdiff_t) q->coordinates;
6695 while (isspace((int) ((unsigned char) *p)) != 0)
6696 p++;
6697 if (*p == ',')
6698 p++;
6699 } while (IsPoint(p) != MagickFalse);
6700 break;
6701 }
6702 case 'l':
6703 case 'L':
6704 {
6705 /*
6706 Line to.
6707 */
6708 do
6709 {
6710 (void) GetNextToken(p,&p,MaxTextExtent,token);
6711 if (*token == ',')
6712 (void) GetNextToken(p,&p,MaxTextExtent,token);
6713 x=GetDrawValue(token,&next_token);
6714 if (token == next_token)
6715 ThrowPointExpectedException(image,token);
6716 (void) GetNextToken(p,&p,MaxTextExtent,token);
6717 if (*token == ',')
6718 (void) GetNextToken(p,&p,MaxTextExtent,token);
6719 y=GetDrawValue(token,&next_token);
6720 if (token == next_token)
6721 ThrowPointExpectedException(image,token);
6722 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6723 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6724 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6725 return(-1);
6726 q=(*mvg_info->primitive_info)+mvg_info->offset;
6727 if (TracePoint(q,point) == MagickFalse)
6728 return(-1);
6729 mvg_info->offset+=q->coordinates;
6730 q+=(ptrdiff_t) q->coordinates;
6731 while (isspace((int) ((unsigned char) *p)) != 0)
6732 p++;
6733 if (*p == ',')
6734 p++;
6735 } while (IsPoint(p) != MagickFalse);
6736 break;
6737 }
6738 case 'M':
6739 case 'm':
6740 {
6741 /*
6742 Move to.
6743 */
6744 if (mvg_info->offset != subpath_offset)
6745 {
6746 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6747 primitive_info->coordinates=(size_t) (q-primitive_info);
6748 number_coordinates+=primitive_info->coordinates;
6749 primitive_info=q;
6750 subpath_offset=mvg_info->offset;
6751 }
6752 i=0;
6753 do
6754 {
6755 (void) GetNextToken(p,&p,MaxTextExtent,token);
6756 if (*token == ',')
6757 (void) GetNextToken(p,&p,MaxTextExtent,token);
6758 x=GetDrawValue(token,&next_token);
6759 if (token == next_token)
6760 ThrowPointExpectedException(image,token);
6761 (void) GetNextToken(p,&p,MaxTextExtent,token);
6762 if (*token == ',')
6763 (void) GetNextToken(p,&p,MaxTextExtent,token);
6764 y=GetDrawValue(token,&next_token);
6765 if (token == next_token)
6766 ThrowPointExpectedException(image,token);
6767 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6768 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6769 if (i == 0)
6770 start=point;
6771 i++;
6772 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6773 return(-1);
6774 q=(*mvg_info->primitive_info)+mvg_info->offset;
6775 if (TracePoint(q,point) == MagickFalse)
6776 return(-1);
6777 mvg_info->offset+=q->coordinates;
6778 q+=(ptrdiff_t) q->coordinates;
6779 while (isspace((int) ((unsigned char) *p)) != 0)
6780 p++;
6781 if (*p == ',')
6782 p++;
6783 } while (IsPoint(p) != MagickFalse);
6784 break;
6785 }
6786 case 'q':
6787 case 'Q':
6788 {
6789 /*
6790 Quadratic Bézier curve.
6791 */
6792 do
6793 {
6794 points[0]=point;
6795 for (i=1; i < 3; i++)
6796 {
6797 (void) GetNextToken(p,&p,MaxTextExtent,token);
6798 if (*token == ',')
6799 (void) GetNextToken(p,&p,MaxTextExtent,token);
6800 x=GetDrawValue(token,&next_token);
6801 if (token == next_token)
6802 ThrowPointExpectedException(image,token);
6803 (void) GetNextToken(p,&p,MaxTextExtent,token);
6804 if (*token == ',')
6805 (void) GetNextToken(p,&p,MaxTextExtent,token);
6806 y=GetDrawValue(token,&next_token);
6807 if (token == next_token)
6808 ThrowPointExpectedException(image,token);
6809 if (*p == ',')
6810 p++;
6811 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6812 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6813 points[i]=end;
6814 }
6815 for (i=0; i < 3; i++)
6816 (q+i)->point=points[i];
6817 if (TraceBezier(mvg_info,3) == MagickFalse)
6818 return(-1);
6819 q=(*mvg_info->primitive_info)+mvg_info->offset;
6820 mvg_info->offset+=q->coordinates;
6821 q+=(ptrdiff_t) q->coordinates;
6822 point=end;
6823 while (isspace((int) ((unsigned char) *p)) != 0)
6824 p++;
6825 if (*p == ',')
6826 p++;
6827 } while (IsPoint(p) != MagickFalse);
6828 break;
6829 }
6830 case 's':
6831 case 'S':
6832 {
6833 /*
6834 Cubic Bézier curve.
6835 */
6836 do
6837 {
6838 points[0]=points[3];
6839 points[1].x=2.0*points[3].x-points[2].x;
6840 points[1].y=2.0*points[3].y-points[2].y;
6841 for (i=2; i < 4; i++)
6842 {
6843 (void) GetNextToken(p,&p,MaxTextExtent,token);
6844 if (*token == ',')
6845 (void) GetNextToken(p,&p,MaxTextExtent,token);
6846 x=GetDrawValue(token,&next_token);
6847 if (token == next_token)
6848 ThrowPointExpectedException(image,token);
6849 (void) GetNextToken(p,&p,MaxTextExtent,token);
6850 if (*token == ',')
6851 (void) GetNextToken(p,&p,MaxTextExtent,token);
6852 y=GetDrawValue(token,&next_token);
6853 if (token == next_token)
6854 ThrowPointExpectedException(image,token);
6855 if (*p == ',')
6856 p++;
6857 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6858 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6859 points[i]=end;
6860 }
6861 if (strchr("CcSs",last_attribute) == (char *) NULL)
6862 {
6863 points[0]=point;
6864 points[1]=point;
6865 }
6866 for (i=0; i < 4; i++)
6867 (q+i)->point=points[i];
6868 if (TraceBezier(mvg_info,4) == MagickFalse)
6869 return(-1);
6870 q=(*mvg_info->primitive_info)+mvg_info->offset;
6871 mvg_info->offset+=q->coordinates;
6872 q+=(ptrdiff_t) q->coordinates;
6873 point=end;
6874 last_attribute=attribute;
6875 while (isspace((int) ((unsigned char) *p)) != 0)
6876 p++;
6877 if (*p == ',')
6878 p++;
6879 } while (IsPoint(p) != MagickFalse);
6880 break;
6881 }
6882 case 't':
6883 case 'T':
6884 {
6885 /*
6886 Quadratic Bézier curve.
6887 */
6888 do
6889 {
6890 points[0]=points[2];
6891 points[1].x=2.0*points[2].x-points[1].x;
6892 points[1].y=2.0*points[2].y-points[1].y;
6893 for (i=2; i < 3; i++)
6894 {
6895 (void) GetNextToken(p,&p,MaxTextExtent,token);
6896 if (*token == ',')
6897 (void) GetNextToken(p,&p,MaxTextExtent,token);
6898 x=GetDrawValue(token,&next_token);
6899 if (token == next_token)
6900 ThrowPointExpectedException(image,token);
6901 (void) GetNextToken(p,&p,MaxTextExtent,token);
6902 if (*token == ',')
6903 (void) GetNextToken(p,&p,MaxTextExtent,token);
6904 y=GetDrawValue(token,&next_token);
6905 if (token == next_token)
6906 ThrowPointExpectedException(image,token);
6907 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6908 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6909 points[i]=end;
6910 }
6911 if (status == MagickFalse)
6912 break;
6913 if (strchr("QqTt",last_attribute) == (char *) NULL)
6914 {
6915 points[0]=point;
6916 points[1]=point;
6917 }
6918 for (i=0; i < 3; i++)
6919 (q+i)->point=points[i];
6920 if (TraceBezier(mvg_info,3) == MagickFalse)
6921 return(-1);
6922 q=(*mvg_info->primitive_info)+mvg_info->offset;
6923 mvg_info->offset+=q->coordinates;
6924 q+=(ptrdiff_t) q->coordinates;
6925 point=end;
6926 last_attribute=attribute;
6927 while (isspace((int) ((unsigned char) *p)) != 0)
6928 p++;
6929 if (*p == ',')
6930 p++;
6931 } while (IsPoint(p) != MagickFalse);
6932 break;
6933 }
6934 case 'v':
6935 case 'V':
6936 {
6937 /*
6938 Line to.
6939 */
6940 do
6941 {
6942 (void) GetNextToken(p,&p,MaxTextExtent,token);
6943 if (*token == ',')
6944 (void) GetNextToken(p,&p,MaxTextExtent,token);
6945 y=GetDrawValue(token,&next_token);
6946 if (token == next_token)
6947 ThrowPointExpectedException(image,token);
6948 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6949 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6950 return(-1);
6951 q=(*mvg_info->primitive_info)+mvg_info->offset;
6952 if (TracePoint(q,point) == MagickFalse)
6953 return(-1);
6954 mvg_info->offset+=q->coordinates;
6955 q+=(ptrdiff_t) q->coordinates;
6956 while (isspace((int) ((unsigned char) *p)) != 0)
6957 p++;
6958 if (*p == ',')
6959 p++;
6960 } while (IsPoint(p) != MagickFalse);
6961 break;
6962 }
6963 case 'z':
6964 case 'Z':
6965 {
6966 /*
6967 Close path.
6968 */
6969 point=start;
6970 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6971 return(-1);
6972 q=(*mvg_info->primitive_info)+mvg_info->offset;
6973 if (TracePoint(q,point) == MagickFalse)
6974 return(-1);
6975 mvg_info->offset+=q->coordinates;
6976 q+=(ptrdiff_t) q->coordinates;
6977 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6978 primitive_info->coordinates=(size_t) (q-primitive_info);
6979 primitive_info->closed_subpath=MagickTrue;
6980 number_coordinates+=primitive_info->coordinates;
6981 primitive_info=q;
6982 subpath_offset=mvg_info->offset;
6983 z_count++;
6984 break;
6985 }
6986 default:
6987 {
6988 ThrowPointExpectedException(image,token);
6989 break;
6990 }
6991 }
6992 }
6993 if (status == MagickFalse)
6994 return(-1);
6995 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6996 primitive_info->coordinates=(size_t) (q-primitive_info);
6997 number_coordinates+=primitive_info->coordinates;
6998 for (i=0; i < (ssize_t) number_coordinates; i++)
6999 {
7000 q--;
7001 q->primitive=primitive_type;
7002 if (z_count > 1)
7003 q->method=FillToBorderMethod;
7004 }
7005 q=primitive_info;
7006 return((ssize_t) number_coordinates);
7007}
7008
7009static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7010 const PointInfo start,const PointInfo end)
7011{
7012 PointInfo
7013 point;
7014
7015 PrimitiveInfo
7016 *p;
7017
7018 ssize_t
7019 i;
7020
7021 p=primitive_info;
7022 if (TracePoint(p,start) == MagickFalse)
7023 return(MagickFalse);
7024 p+=(ptrdiff_t) p->coordinates;
7025 point.x=start.x;
7026 point.y=end.y;
7027 if (TracePoint(p,point) == MagickFalse)
7028 return(MagickFalse);
7029 p+=(ptrdiff_t) p->coordinates;
7030 if (TracePoint(p,end) == MagickFalse)
7031 return(MagickFalse);
7032 p+=(ptrdiff_t) p->coordinates;
7033 point.x=end.x;
7034 point.y=start.y;
7035 if (TracePoint(p,point) == MagickFalse)
7036 return(MagickFalse);
7037 p+=(ptrdiff_t) p->coordinates;
7038 if (TracePoint(p,start) == MagickFalse)
7039 return(MagickFalse);
7040 p+=(ptrdiff_t) p->coordinates;
7041 primitive_info->coordinates=(size_t) (p-primitive_info);
7042 primitive_info->closed_subpath=MagickTrue;
7043 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7044 {
7045 p->primitive=primitive_info->primitive;
7046 p--;
7047 }
7048 return(MagickTrue);
7049}
7050
7051static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7052 const PointInfo start,const PointInfo end,PointInfo arc)
7053{
7054 PointInfo
7055 degrees,
7056 point,
7057 segment;
7058
7059 PrimitiveInfo
7060 *primitive_info;
7061
7062 PrimitiveInfo
7063 *p;
7064
7065 ssize_t
7066 i;
7067
7068 ssize_t
7069 offset;
7070
7071 offset=mvg_info->offset;
7072 segment.x=fabs(end.x-start.x);
7073 segment.y=fabs(end.y-start.y);
7074 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7075 {
7076 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7077 return(MagickTrue);
7078 }
7079 if (arc.x > (0.5*segment.x))
7080 arc.x=0.5*segment.x;
7081 if (arc.y > (0.5*segment.y))
7082 arc.y=0.5*segment.y;
7083 point.x=start.x+segment.x-arc.x;
7084 point.y=start.y+arc.y;
7085 degrees.x=270.0;
7086 degrees.y=360.0;
7087 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7088 return(MagickFalse);
7089 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7090 mvg_info->offset+=p->coordinates;
7091 point.x=start.x+segment.x-arc.x;
7092 point.y=start.y+segment.y-arc.y;
7093 degrees.x=0.0;
7094 degrees.y=90.0;
7095 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7096 return(MagickFalse);
7097 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7098 mvg_info->offset+=p->coordinates;
7099 point.x=start.x+arc.x;
7100 point.y=start.y+segment.y-arc.y;
7101 degrees.x=90.0;
7102 degrees.y=180.0;
7103 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7104 return(MagickFalse);
7105 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7106 mvg_info->offset+=p->coordinates;
7107 point.x=start.x+arc.x;
7108 point.y=start.y+arc.y;
7109 degrees.x=180.0;
7110 degrees.y=270.0;
7111 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7112 return(MagickFalse);
7113 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7114 mvg_info->offset+=p->coordinates;
7115 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7116 return(MagickFalse);
7117 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7118 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7119 return(MagickFalse);
7120 p+=(ptrdiff_t) p->coordinates;
7121 mvg_info->offset=offset;
7122 primitive_info=(*mvg_info->primitive_info)+offset;
7123 primitive_info->coordinates=(size_t) (p-primitive_info);
7124 primitive_info->closed_subpath=MagickTrue;
7125 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7126 {
7127 p->primitive=primitive_info->primitive;
7128 p--;
7129 }
7130 return(MagickTrue);
7131}
7132
7133static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7134 const size_t number_vertices,const double offset)
7135{
7136 double
7137 distance;
7138
7139 double
7140 dx,
7141 dy;
7142
7143 ssize_t
7144 i;
7145
7146 ssize_t
7147 j;
7148
7149 dx=0.0;
7150 dy=0.0;
7151 for (i=1; i < (ssize_t) number_vertices; i++)
7152 {
7153 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7154 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7155 if ((fabs((double) dx) >= MagickEpsilon) ||
7156 (fabs((double) dy) >= MagickEpsilon))
7157 break;
7158 }
7159 if (i == (ssize_t) number_vertices)
7160 i=(ssize_t) number_vertices-1L;
7161 distance=hypot((double) dx,(double) dy);
7162 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7163 dx*(distance+offset)/distance);
7164 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7165 dy*(distance+offset)/distance);
7166 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7167 {
7168 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7169 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7170 if ((fabs((double) dx) >= MagickEpsilon) ||
7171 (fabs((double) dy) >= MagickEpsilon))
7172 break;
7173 }
7174 distance=hypot((double) dx,(double) dy);
7175 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7176 dx*(distance+offset)/distance);
7177 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7178 dy*(distance+offset)/distance);
7179 return(MagickTrue);
7180}
7181
7182static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7183 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7184{
7185#define MaxStrokePad (6*BezierQuantum+360)
7186#define CheckPathExtent(pad_p,pad_q) \
7187{ \
7188 if ((pad_p) > MaxBezierCoordinates) \
7189 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7190 else \
7191 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7192 { \
7193 if (~extent_p < (pad_p)) \
7194 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7195 else \
7196 { \
7197 extent_p+=(pad_p); \
7198 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7199 MaxStrokePad,sizeof(*stroke_p)); \
7200 } \
7201 } \
7202 if ((pad_q) > MaxBezierCoordinates) \
7203 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7204 else \
7205 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7206 { \
7207 if (~extent_q < (pad_q)) \
7208 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7209 else \
7210 { \
7211 extent_q+=(pad_q); \
7212 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7213 MaxStrokePad,sizeof(*stroke_q)); \
7214 } \
7215 } \
7216 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7217 { \
7218 if (stroke_p != (PointInfo *) NULL) \
7219 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7220 if (stroke_q != (PointInfo *) NULL) \
7221 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7222 polygon_primitive=(PrimitiveInfo *) \
7223 RelinquishMagickMemory(polygon_primitive); \
7224 (void) ThrowMagickException(exception,GetMagickModule(), \
7225 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7226 return((PrimitiveInfo *) NULL); \
7227 } \
7228}
7229
7230 typedef struct _StrokeSegment
7231 {
7232 double
7233 p,
7234 q;
7235 } StrokeSegment;
7236
7237 double
7238 delta_theta,
7239 dot_product,
7240 mid,
7241 miterlimit;
7242
7243 MagickBooleanType
7244 closed_path;
7245
7246 PointInfo
7247 box_p[5],
7248 box_q[5],
7249 center,
7250 offset,
7251 *stroke_p,
7252 *stroke_q;
7253
7254 PrimitiveInfo
7255 *polygon_primitive,
7256 *stroke_polygon;
7257
7258 ssize_t
7259 i;
7260
7261 size_t
7262 arc_segments,
7263 extent_p,
7264 extent_q,
7265 number_vertices;
7266
7267 ssize_t
7268 j,
7269 n,
7270 p,
7271 q;
7272
7273 StrokeSegment
7274 dx = {0.0, 0.0},
7275 dy = {0.0, 0.0},
7276 inverse_slope = {0.0, 0.0},
7277 slope = {0.0, 0.0},
7278 theta = {0.0, 0.0};
7279
7280 /*
7281 Allocate paths.
7282 */
7283 number_vertices=primitive_info->coordinates;
7284 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7285 number_vertices+2UL,sizeof(*polygon_primitive));
7286 if (polygon_primitive == (PrimitiveInfo *) NULL)
7287 {
7288 (void) ThrowMagickException(exception,GetMagickModule(),
7289 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7290 return((PrimitiveInfo *) NULL);
7291 }
7292 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7293 sizeof(*polygon_primitive));
7294 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7295 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7296 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7297 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7298 if ((draw_info->linejoin == MiterJoin) ||
7299 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7300 {
7301 polygon_primitive[number_vertices]=primitive_info[1];
7302 number_vertices++;
7303 }
7304 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7305 /*
7306 Compute the slope for the first line segment, p.
7307 */
7308 closed_path=primitive_info[0].closed_subpath;
7309 dx.p=0.0;
7310 dy.p=0.0;
7311 for (n=1; n < (ssize_t) number_vertices; n++)
7312 {
7313 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7314 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7315 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7316 break;
7317 }
7318 if (n == (ssize_t) number_vertices)
7319 {
7320 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7321 {
7322 /*
7323 Zero length subpath.
7324 */
7325 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7326 sizeof(*stroke_polygon));
7327 stroke_polygon[0]=polygon_primitive[0];
7328 stroke_polygon[0].coordinates=0;
7329 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7330 polygon_primitive);
7331 return(stroke_polygon);
7332 }
7333 n=(ssize_t) number_vertices-1L;
7334 }
7335 extent_p=2*number_vertices;
7336 extent_q=2*number_vertices;
7337 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7338 sizeof(*stroke_p));
7339 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7340 sizeof(*stroke_q));
7341 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7342 {
7343 if (stroke_p != (PointInfo *) NULL)
7344 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7345 if (stroke_q != (PointInfo *) NULL)
7346 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7347 polygon_primitive=(PrimitiveInfo *)
7348 RelinquishMagickMemory(polygon_primitive);
7349 (void) ThrowMagickException(exception,GetMagickModule(),
7350 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7351 return((PrimitiveInfo *) NULL);
7352 }
7353 slope.p=0.0;
7354 inverse_slope.p=0.0;
7355 if (fabs(dx.p) < MagickEpsilon)
7356 {
7357 if (dx.p >= 0.0)
7358 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7359 else
7360 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7361 }
7362 else
7363 if (fabs(dy.p) < MagickEpsilon)
7364 {
7365 if (dy.p >= 0.0)
7366 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7367 else
7368 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7369 }
7370 else
7371 {
7372 slope.p=dy.p/dx.p;
7373 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7374 }
7375 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7376 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7377 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7378 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7379 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7380 offset.y=(double) (offset.x*inverse_slope.p);
7381 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7382 {
7383 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7384 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7385 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7386 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7387 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7388 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7389 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7390 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7391 }
7392 else
7393 {
7394 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7395 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7396 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7397 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7398 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7399 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7400 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7401 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7402 }
7403 /*
7404 Create strokes for the line join attribute: bevel, miter, round.
7405 */
7406 p=0;
7407 q=0;
7408 stroke_q[p++]=box_q[0];
7409 stroke_p[q++]=box_p[0];
7410 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7411 {
7412 /*
7413 Compute the slope for this line segment, q.
7414 */
7415 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7416 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7417 dot_product=dx.q*dx.q+dy.q*dy.q;
7418 if (dot_product < 0.25)
7419 continue;
7420 slope.q=0.0;
7421 inverse_slope.q=0.0;
7422 if (fabs(dx.q) < MagickEpsilon)
7423 {
7424 if (dx.q >= 0.0)
7425 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7426 else
7427 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7428 }
7429 else
7430 if (fabs(dy.q) < MagickEpsilon)
7431 {
7432 if (dy.q >= 0.0)
7433 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7434 else
7435 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7436 }
7437 else
7438 {
7439 slope.q=dy.q/dx.q;
7440 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7441 }
7442 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7443 offset.y=(double) (offset.x*inverse_slope.q);
7444 dot_product=dy.q*offset.x-dx.q*offset.y;
7445 if (dot_product > 0.0)
7446 {
7447 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7448 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7449 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7450 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7451 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7452 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7453 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7454 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7455 }
7456 else
7457 {
7458 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7459 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7460 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7461 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7462 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7463 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7464 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7465 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7466 }
7467 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7468 {
7469 box_p[4]=box_p[1];
7470 box_q[4]=box_q[1];
7471 }
7472 else
7473 {
7474 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7475 box_p[3].y)/(slope.p-slope.q));
7476 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7477 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7478 box_q[3].y)/(slope.p-slope.q));
7479 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7480 }
7481 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7482 dot_product=dx.q*dy.p-dx.p*dy.q;
7483 if (dot_product <= 0.0)
7484 switch (draw_info->linejoin)
7485 {
7486 case BevelJoin:
7487 {
7488 stroke_q[q++]=box_q[1];
7489 stroke_q[q++]=box_q[2];
7490 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7491 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7492 if (dot_product <= miterlimit)
7493 stroke_p[p++]=box_p[4];
7494 else
7495 {
7496 stroke_p[p++]=box_p[1];
7497 stroke_p[p++]=box_p[2];
7498 }
7499 break;
7500 }
7501 case MiterJoin:
7502 {
7503 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7504 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7505 if (dot_product <= miterlimit)
7506 {
7507 stroke_q[q++]=box_q[4];
7508 stroke_p[p++]=box_p[4];
7509 }
7510 else
7511 {
7512 stroke_q[q++]=box_q[1];
7513 stroke_q[q++]=box_q[2];
7514 stroke_p[p++]=box_p[1];
7515 stroke_p[p++]=box_p[2];
7516 }
7517 break;
7518 }
7519 case RoundJoin:
7520 {
7521 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7522 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7523 if (dot_product <= miterlimit)
7524 stroke_p[p++]=box_p[4];
7525 else
7526 {
7527 stroke_p[p++]=box_p[1];
7528 stroke_p[p++]=box_p[2];
7529 }
7530 center=polygon_primitive[n].point;
7531 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7532 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7533 if (theta.q < theta.p)
7534 theta.q+=2.0*MagickPI;
7535 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7536 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7537 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7538 stroke_q[q].x=box_q[1].x;
7539 stroke_q[q].y=box_q[1].y;
7540 q++;
7541 for (j=1; j < (ssize_t) arc_segments; j++)
7542 {
7543 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7544 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7545 (theta.p+delta_theta),DegreesToRadians(360.0))));
7546 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7547 (theta.p+delta_theta),DegreesToRadians(360.0))));
7548 q++;
7549 }
7550 stroke_q[q++]=box_q[2];
7551 break;
7552 }
7553 default:
7554 break;
7555 }
7556 else
7557 switch (draw_info->linejoin)
7558 {
7559 case BevelJoin:
7560 {
7561 stroke_p[p++]=box_p[1];
7562 stroke_p[p++]=box_p[2];
7563 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7564 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7565 if (dot_product <= miterlimit)
7566 stroke_q[q++]=box_q[4];
7567 else
7568 {
7569 stroke_q[q++]=box_q[1];
7570 stroke_q[q++]=box_q[2];
7571 }
7572 break;
7573 }
7574 case MiterJoin:
7575 {
7576 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7577 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7578 if (dot_product <= miterlimit)
7579 {
7580 stroke_q[q++]=box_q[4];
7581 stroke_p[p++]=box_p[4];
7582 }
7583 else
7584 {
7585 stroke_q[q++]=box_q[1];
7586 stroke_q[q++]=box_q[2];
7587 stroke_p[p++]=box_p[1];
7588 stroke_p[p++]=box_p[2];
7589 }
7590 break;
7591 }
7592 case RoundJoin:
7593 {
7594 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7595 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7596 if (dot_product <= miterlimit)
7597 stroke_q[q++]=box_q[4];
7598 else
7599 {
7600 stroke_q[q++]=box_q[1];
7601 stroke_q[q++]=box_q[2];
7602 }
7603 center=polygon_primitive[n].point;
7604 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7605 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7606 if (theta.p < theta.q)
7607 theta.p+=2.0*MagickPI;
7608 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7609 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7610 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7611 stroke_p[p++]=box_p[1];
7612 for (j=1; j < (ssize_t) arc_segments; j++)
7613 {
7614 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7615 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7616 (theta.p+delta_theta),DegreesToRadians(360.0))));
7617 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7618 (theta.p+delta_theta),DegreesToRadians(360.0))));
7619 p++;
7620 }
7621 stroke_p[p++]=box_p[2];
7622 break;
7623 }
7624 default:
7625 break;
7626 }
7627 slope.p=slope.q;
7628 inverse_slope.p=inverse_slope.q;
7629 box_p[0]=box_p[2];
7630 box_p[1]=box_p[3];
7631 box_q[0]=box_q[2];
7632 box_q[1]=box_q[3];
7633 dx.p=dx.q;
7634 dy.p=dy.q;
7635 n=i;
7636 }
7637 stroke_p[p++]=box_p[1];
7638 stroke_q[q++]=box_q[1];
7639 /*
7640 Trace stroked polygon.
7641 */
7642 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7643 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7644 if (stroke_polygon == (PrimitiveInfo *) NULL)
7645 {
7646 (void) ThrowMagickException(exception,GetMagickModule(),
7647 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7648 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7649 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7650 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7651 polygon_primitive);
7652 return(stroke_polygon);
7653 }
7654 for (i=0; i < (ssize_t) p; i++)
7655 {
7656 stroke_polygon[i]=polygon_primitive[0];
7657 stroke_polygon[i].point=stroke_p[i];
7658 }
7659 if (closed_path != MagickFalse)
7660 {
7661 stroke_polygon[i]=polygon_primitive[0];
7662 stroke_polygon[i].point=stroke_polygon[0].point;
7663 i++;
7664 }
7665 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7666 {
7667 stroke_polygon[i]=polygon_primitive[0];
7668 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7669 }
7670 if (closed_path != MagickFalse)
7671 {
7672 stroke_polygon[i]=polygon_primitive[0];
7673 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7674 i++;
7675 }
7676 stroke_polygon[i]=polygon_primitive[0];
7677 stroke_polygon[i].point=stroke_polygon[0].point;
7678 i++;
7679 stroke_polygon[i].primitive=UndefinedPrimitive;
7680 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7681 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7682 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7683 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7684 return(stroke_polygon);
7685}
_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