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165 <p class="navigation-index">[<a href="#CloneWandView">CloneWandView</a> • <a href="#DestroyWandView">DestroyWandView</a> • <a href="#DuplexTransferWandViewIterator">DuplexTransferWandViewIterator</a> • <a href="#GetWandViewException">GetWandViewException</a> • <a href="#GetWandViewExtent">GetWandViewExtent</a> • <a href="#GetWandViewIterator">GetWandViewIterator</a> • <a href="#GetWandViewPixels">GetWandViewPixels</a> • <a href="#GetWandViewWand">GetWandViewWand</a> • <a href="#IsWandView">IsWandView</a> • <a href="#NewWandView">NewWandView</a> • <a href="#NewWandViewExtent">NewWandViewExtent</a> • <a href="#SetWandViewDescription">SetWandViewDescription</a> • <a href="#SetWandViewIterator">SetWandViewIterator</a> • <a href="#TransferWandViewIterator">TransferWandViewIterator</a> • <a href="#UpdateWandViewIterator">UpdateWandViewIterator</a>]</p>
167 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
168 _8c.html" target="source" name="CloneWandView">CloneWandView</a></h2>
169 <div class="doc-section">
171 <p>CloneWandView() makes a copy of the specified wand view.</p></ol>
173 <p>The format of the CloneWandView method is:</p>
176 WandView *CloneWandView(const WandView *wand_view)
179 <p>A description of each parameter follows:</p></ol>
182 <ol><p>the wand view.</p></ol>
185 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
186 _8c.html" target="source" name="DestroyWandView">DestroyWandView</a></h2>
187 <div class="doc-section">
189 <p>DestroyWandView() deallocates memory associated with a wand view.</p></ol>
191 <p>The format of the DestroyWandView method is:</p>
194 WandView *DestroyWandView(WandView *wand_view)
197 <p>A description of each parameter follows:</p></ol>
200 <ol><p>the wand view.</p></ol>
203 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
204 _8c.html" target="source" name="DuplexTransferWandViewIterator">DuplexTransferWandViewIterator</a></h2>
205 <div class="doc-section">
207 <p>DuplexTransferWandViewIterator() iterates over three wand views in parallel and calls your transfer method for each scanline of the view. The source and duplex pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. However, the destination wand view is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted.</p></ol>
209 <p>The callback signature is:</p>
212 MagickBooleanType DuplexTransferImageViewMethod(const WandView *source,
213 const WandView *duplex,WandView *destination,const ssize_t y,
214 const int thread_id,void *context)
217 <p>Use this pragma if the view is not single threaded:</p>
223 <p>to define a section of code in your callback transfer method that must be executed by a single thread at a time.</p></ol>
225 <p>The format of the DuplexTransferWandViewIterator method is:</p>
228 MagickBooleanType DuplexTransferWandViewIterator(WandView *source,
229 WandView *duplex,WandView *destination,
230 DuplexTransferWandViewMethod transfer,void *context)
233 <p>A description of each parameter follows:</p></ol>
236 <ol><p>the source wand view.</p></ol>
239 <ol><p>the duplex wand view.</p></ol>
242 <ol><p>the destination wand view.</p></ol>
245 <ol><p>the transfer callback method.</p></ol>
248 <ol><p>the user defined context.</p></ol>
251 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
252 _8c.html" target="source" name="GetWandViewException">GetWandViewException</a></h2>
253 <div class="doc-section">
255 <p>GetWandViewException() returns the severity, reason, and description of any error that occurs when utilizing a wand view.</p></ol>
257 <p>The format of the GetWandViewException method is:</p>
260 char *GetWandViewException(const PixelWand *wand_view,
261 ExceptionType *severity)
264 <p>A description of each parameter follows:</p></ol>
267 <ol><p>the pixel wand_view.</p></ol>
270 <ol><p>the severity of the error is returned here.</p></ol>
273 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
274 _8c.html" target="source" name="GetWandViewExtent">GetWandViewExtent</a></h2>
275 <div class="doc-section">
277 <p>GetWandViewExtent() returns the wand view extent.</p></ol>
279 <p>The format of the GetWandViewExtent method is:</p>
282 RectangleInfo GetWandViewExtent(const WandView *wand_view)
285 <p>A description of each parameter follows:</p></ol>
288 <ol><p>the wand view.</p></ol>
291 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
292 _8c.html" target="source" name="GetWandViewIterator">GetWandViewIterator</a></h2>
293 <div class="doc-section">
295 <p>GetWandViewIterator() iterates over the wand view in parallel and calls your get method for each scanline of the view. The pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. Any updates to the pixels in your callback are ignored.</p></ol>
297 <p>The callback signature is:</p>
300 MagickBooleanType GetImageViewMethod(const WandView *source,
301 const ssize_t y,const int thread_id,void *context)
304 <p>Use this pragma if the view is not single threaded:</p>
310 <p>to define a section of code in your callback get method that must be executed by a single thread at a time.</p></ol>
312 <p>The format of the GetWandViewIterator method is:</p>
315 MagickBooleanType GetWandViewIterator(WandView *source,
316 GetWandViewMethod get,void *context)
319 <p>A description of each parameter follows:</p></ol>
322 <ol><p>the source wand view.</p></ol>
325 <ol><p>the get callback method.</p></ol>
328 <ol><p>the user defined context.</p></ol>
331 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
332 _8c.html" target="source" name="GetWandViewPixels">GetWandViewPixels</a></h2>
333 <div class="doc-section">
335 <p>GetWandViewPixels() returns the wand view pixel_wands.</p></ol>
337 <p>The format of the GetWandViewPixels method is:</p>
340 PixelWand *GetWandViewPixels(const WandView *wand_view)
343 <p>A description of each parameter follows:</p></ol>
346 <ol><p>the wand view.</p></ol>
349 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
350 _8c.html" target="source" name="GetWandViewWand">GetWandViewWand</a></h2>
351 <div class="doc-section">
353 <p>GetWandViewWand() returns the magick wand associated with the wand view.</p></ol>
355 <p>The format of the GetWandViewWand method is:</p>
358 MagickWand *GetWandViewWand(const WandView *wand_view)
361 <p>A description of each parameter follows:</p></ol>
364 <ol><p>the wand view.</p></ol>
367 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
368 _8c.html" target="source" name="IsWandView">IsWandView</a></h2>
369 <div class="doc-section">
371 <p>IsWandView() returns MagickTrue if the the parameter is verified as a wand view object.</p></ol>
373 <p>The format of the IsWandView method is:</p>
376 MagickBooleanType IsWandView(const WandView *wand_view)
379 <p>A description of each parameter follows:</p></ol>
382 <ol><p>the wand view.</p></ol>
385 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
386 _8c.html" target="source" name="NewWandView">NewWandView</a></h2>
387 <div class="doc-section">
389 <p>NewWandView() returns a wand view required for all other methods in the Wand View API.</p></ol>
391 <p>The format of the NewWandView method is:</p>
394 WandView *NewWandView(MagickWand *wand)
397 <p>A description of each parameter follows:</p></ol>
400 <ol><p>the wand.</p></ol>
403 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
404 _8c.html" target="source" name="NewWandViewExtent">NewWandViewExtent</a></h2>
405 <div class="doc-section">
407 <p>NewWandViewExtent() returns a wand view required for all other methods in the Wand View API.</p></ol>
409 <p>The format of the NewWandViewExtent method is:</p>
412 WandView *NewWandViewExtent(MagickWand *wand,const ssize_t x,
413 const ssize_t y,const size_t width,const size_t height)
416 <p>A description of each parameter follows:</p></ol>
419 <ol><p>the magick wand.</p></ol>
421 <h5>x,y,columns,rows</h5>
422 <ol><p>These values define the perimeter of a extent of pixel_wands view.</p></ol>
425 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
426 _8c.html" target="source" name="SetWandViewDescription">SetWandViewDescription</a></h2>
427 <div class="doc-section">
429 <p>SetWandViewDescription() associates a description with an image view.</p></ol>
431 <p>The format of the SetWandViewDescription method is:</p>
434 void SetWandViewDescription(WandView *image_view,const char *description)
437 <p>A description of each parameter follows:</p></ol>
440 <ol><p>the wand view.</p></ol>
443 <ol><p>the wand view description.</p></ol>
446 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
447 _8c.html" target="source" name="SetWandViewIterator">SetWandViewIterator</a></h2>
448 <div class="doc-section">
450 <p>SetWandViewIterator() iterates over the wand view in parallel and calls your set method for each scanline of the view. The pixel extent is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension. The pixels are initiallly undefined and any settings you make in the callback method are automagically synced back to your image.</p></ol>
452 <p>The callback signature is:</p>
455 MagickBooleanType SetImageViewMethod(ImageView *destination,
456 const ssize_t y,const int thread_id,void *context)
459 <p>Use this pragma if the view is not single threaded:</p>
465 <p>to define a section of code in your callback set method that must be executed by a single thread at a time.</p></ol>
467 <p>The format of the SetWandViewIterator method is:</p>
470 MagickBooleanType SetWandViewIterator(WandView *destination,
471 SetWandViewMethod set,void *context)
474 <p>A description of each parameter follows:</p></ol>
477 <ol><p>the wand view.</p></ol>
480 <ol><p>the set callback method.</p></ol>
483 <ol><p>the user defined context.</p></ol>
486 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
487 _8c.html" target="source" name="TransferWandViewIterator">TransferWandViewIterator</a></h2>
488 <div class="doc-section">
490 <p>TransferWandViewIterator() iterates over two wand views in parallel and calls your transfer method for each scanline of the view. The source pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. However, the destination wand view is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted.</p></ol>
492 <p>The callback signature is:</p>
495 MagickBooleanType TransferImageViewMethod(const WandView *source,
496 WandView *destination,const ssize_t y,const int thread_id,
500 <p>Use this pragma if the view is not single threaded:</p>
506 <p>to define a section of code in your callback transfer method that must be executed by a single thread at a time.</p></ol>
508 <p>The format of the TransferWandViewIterator method is:</p>
511 MagickBooleanType TransferWandViewIterator(WandView *source,
512 WandView *destination,TransferWandViewMethod transfer,void *context)
515 <p>A description of each parameter follows:</p></ol>
518 <ol><p>the source wand view.</p></ol>
521 <ol><p>the destination wand view.</p></ol>
524 <ol><p>the transfer callback method.</p></ol>
527 <ol><p>the user defined context.</p></ol>
530 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
531 _8c.html" target="source" name="UpdateWandViewIterator">UpdateWandViewIterator</a></h2>
532 <div class="doc-section">
534 <p>UpdateWandViewIterator() iterates over the wand view in parallel and calls your update method for each scanline of the view. The pixel extent is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted. Updates to pixels in your callback are automagically synced back to the image.</p></ol>
536 <p>The callback signature is:</p>
539 MagickBooleanType UpdateImageViewMethod(WandView *source,const ssize_t y,
540 const int thread_id,void *context)
543 <p>Use this pragma if the view is not single threaded:</p>
549 <p>to define a section of code in your callback update method that must be executed by a single thread at a time.</p></ol>
551 <p>The format of the UpdateWandViewIterator method is:</p>
554 MagickBooleanType UpdateWandViewIterator(WandView *source,
555 UpdateWandViewMethod update,void *context)
558 <p>A description of each parameter follows:</p></ol>
561 <ol><p>the source wand view.</p></ol>
564 <ol><p>the update callback method.</p></ol>
567 <ol><p>the user defined context.</p></ol>
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