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173 <p class="navigation-index">[<a href="#ChopImage">ChopImage</a> • <a href="#CropImage">CropImage</a> • <a href="#ExcerptImage">ExcerptImage</a> • <a href="#ExtentImage">ExtentImage</a> • <a href="#FlipImage">FlipImage</a> • <a href="#FlopImage">FlopImage</a> • <a href="#RollImage">RollImage</a> • <a href="#ShaveImage">ShaveImage</a> • <a href="#SpliceImage">SpliceImage</a> • <a href="#TransformImage">TransformImage</a> • <a href="#TransformImages">TransformImages</a> • <a href="#TransposeImage">TransposeImage</a> • <a href="#TransverseImage">TransverseImage</a> • <a href="#TrimImage">TrimImage</a>]</p>
175 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
176 _8c.html" target="source" name="ChopImage">ChopImage</a></h2>
177 <div class="doc-section">
179 <p>ChopImage() removes a region of an image and collapses the image to occupy the removed portion.</p></ol>
181 <p>The format of the ChopImage method is:</p>
184 Image *ChopImage(const Image *image,const RectangleInfo *chop_info)
185 ExceptionInfo *exception)
188 <p>A description of each parameter follows:</p></ol>
191 <ol><p>the image.</p></ol>
194 <ol><p>Define the region of the image to chop.</p></ol>
197 <ol><p>return any errors or warnings in this structure.</p></ol>
200 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
201 _8c.html" target="source" name="CropImage">CropImage</a></h2>
202 <div class="doc-section">
204 <p>CropImage() extracts a region of the image starting at the offset defined by geometry.</p></ol>
206 <p>The format of the CropImage method is:</p>
209 Image *CropImage(const Image *image,const RectangleInfo *geometry,
210 ExceptionInfo *exception)
213 <p>A description of each parameter follows:</p></ol>
216 <ol><p>the image.</p></ol>
219 <ol><p>Define the region of the image to crop with members x, y, width, and height.</p></ol>
222 <ol><p>return any errors or warnings in this structure.</p></ol>
225 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
226 _8c.html" target="source" name="ExcerptImage">ExcerptImage</a></h2>
227 <div class="doc-section">
229 <p>ExcerptImage() returns a excerpt of the image as defined by the geometry.</p></ol>
231 <p>The format of the ExcerptImage method is:</p>
234 Image *ExcerptImage(const Image *image,const RectangleInfo *geometry,
235 ExceptionInfo *exception)
238 <p>A description of each parameter follows:</p></ol>
241 <ol><p>the image.</p></ol>
244 <ol><p>Define the region of the image to extend with members x, y, width, and height.</p></ol>
247 <ol><p>return any errors or warnings in this structure.</p></ol>
250 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
251 _8c.html" target="source" name="ExtentImage">ExtentImage</a></h2>
252 <div class="doc-section">
254 <p>ExtentImage() extends the image as defined by the geometry, gravity, and image background color. Set the (x,y) offset of the geometry to move the original image relative to the extended image.</p></ol>
256 <p>The format of the ExtentImage method is:</p>
259 Image *ExtentImage(const Image *image,const RectangleInfo *geometry,
260 ExceptionInfo *exception)
263 <p>A description of each parameter follows:</p></ol>
266 <ol><p>the image.</p></ol>
269 <ol><p>Define the region of the image to extend with members x, y, width, and height.</p></ol>
272 <ol><p>return any errors or warnings in this structure.</p></ol>
275 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
276 _8c.html" target="source" name="FlipImage">FlipImage</a></h2>
277 <div class="doc-section">
279 <p>FlipImage() creates a vertical mirror image by reflecting the pixels around the central x-axis.</p></ol>
281 <p>The format of the FlipImage method is:</p>
284 Image *FlipImage(const Image *image,ExceptionInfo *exception)
287 <p>A description of each parameter follows:</p></ol>
290 <ol><p>the image.</p></ol>
293 <ol><p>return any errors or warnings in this structure.</p></ol>
296 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
297 _8c.html" target="source" name="FlopImage">FlopImage</a></h2>
298 <div class="doc-section">
300 <p>FlopImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis.</p></ol>
302 <p>The format of the FlopImage method is:</p>
305 Image *FlopImage(const Image *image,ExceptionInfo *exception)
308 <p>A description of each parameter follows:</p></ol>
311 <ol><p>the image.</p></ol>
314 <ol><p>return any errors or warnings in this structure.</p></ol>
317 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
318 _8c.html" target="source" name="RollImage">RollImage</a></h2>
319 <div class="doc-section">
321 <p>RollImage() offsets an image as defined by x_offset and y_offset.</p></ol>
323 <p>The format of the RollImage method is:</p>
326 Image *RollImage(const Image *image,const ssize_t x_offset,
327 const ssize_t y_offset,ExceptionInfo *exception)
330 <p>A description of each parameter follows:</p></ol>
333 <ol><p>the image.</p></ol>
336 <ol><p>the number of columns to roll in the horizontal direction.</p></ol>
339 <ol><p>the number of rows to roll in the vertical direction.</p></ol>
342 <ol><p>return any errors or warnings in this structure.</p></ol>
345 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
346 _8c.html" target="source" name="ShaveImage">ShaveImage</a></h2>
347 <div class="doc-section">
349 <p>ShaveImage() shaves pixels from the image edges. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p></ol>
351 <p>The format of the ShaveImage method is:</p>
354 Image *ShaveImage(const Image *image,const RectangleInfo *shave_info,
355 ExceptionInfo *exception)
358 <p>A description of each parameter follows:</p></ol>
361 <ol><p>Method ShaveImage returns a pointer to the shaved image. A null image is returned if there is a memory shortage or if the image width or height is zero.</p></ol>
364 <ol><p>the image.</p></ol>
367 <ol><p>Specifies a pointer to a RectangleInfo which defines the region of the image to crop.</p></ol>
370 <ol><p>return any errors or warnings in this structure.</p></ol>
373 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
374 _8c.html" target="source" name="SpliceImage">SpliceImage</a></h2>
375 <div class="doc-section">
377 <p>SpliceImage() splices a solid color into the image as defined by the geometry.</p></ol>
379 <p>The format of the SpliceImage method is:</p>
382 Image *SpliceImage(const Image *image,const RectangleInfo *geometry,
383 ExceptionInfo *exception)
386 <p>A description of each parameter follows:</p></ol>
389 <ol><p>the image.</p></ol>
392 <ol><p>Define the region of the image to splice with members x, y, width, and height.</p></ol>
395 <ol><p>return any errors or warnings in this structure.</p></ol>
398 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
399 _8c.html" target="source" name="TransformImage">TransformImage</a></h2>
400 <div class="doc-section">
402 <p>TransformImage() is a convenience method that behaves like ResizeImage() or CropImage() but accepts scaling and/or cropping information as a region geometry specification. If the operation fails, the original image handle is returned.</p></ol>
404 <p>The format of the TransformImage method is:</p>
407 MagickBooleanType TransformImage(Image **image,const char *crop_geometry,
408 const char *image_geometry)
411 <p>A description of each parameter follows:</p></ol>
414 <ol><p>the image The transformed image is returned as this parameter.</p></ol>
416 <h5>crop_geometry</h5>
417 <ol><p>A crop geometry string. This geometry defines a subregion of the image to crop.</p></ol>
419 <h5>image_geometry</h5>
420 <ol><p>An image geometry string. This geometry defines the final size of the image.</p></ol>
423 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
424 _8c.html" target="source" name="TransformImages">TransformImages</a></h2>
425 <div class="doc-section">
427 <p>TransformImages() calls TransformImage() on each image of a sequence.</p></ol>
429 <p>The format of the TransformImage method is:</p>
432 MagickBooleanType TransformImages(Image **image,
433 const char *crop_geometry,const char *image_geometry)
436 <p>A description of each parameter follows:</p></ol>
439 <ol><p>the image The transformed image is returned as this parameter.</p></ol>
441 <h5>crop_geometry</h5>
442 <ol><p>A crop geometry string. This geometry defines a subregion of the image to crop.</p></ol>
444 <h5>image_geometry</h5>
445 <ol><p>An image geometry string. This geometry defines the final size of the image.</p></ol>
448 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
449 _8c.html" target="source" name="TransposeImage">TransposeImage</a></h2>
450 <div class="doc-section">
452 <p>TransposeImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis while rotating them by 90 degrees.</p></ol>
454 <p>The format of the TransposeImage method is:</p>
457 Image *TransposeImage(const Image *image,ExceptionInfo *exception)
460 <p>A description of each parameter follows:</p></ol>
463 <ol><p>the image.</p></ol>
466 <ol><p>return any errors or warnings in this structure.</p></ol>
469 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
470 _8c.html" target="source" name="TransverseImage">TransverseImage</a></h2>
471 <div class="doc-section">
473 <p>TransverseImage() creates a vertical mirror image by reflecting the pixels around the central x-axis while rotating them by 270 degrees.</p></ol>
475 <p>The format of the TransverseImage method is:</p>
478 Image *TransverseImage(const Image *image,ExceptionInfo *exception)
481 <p>A description of each parameter follows:</p></ol>
484 <ol><p>the image.</p></ol>
487 <ol><p>return any errors or warnings in this structure.</p></ol>
490 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
491 _8c.html" target="source" name="TrimImage">TrimImage</a></h2>
492 <div class="doc-section">
494 <p>TrimImage() trims pixels from the image edges. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p></ol>
496 <p>The format of the TrimImage method is:</p>
499 Image *TrimImage(const Image *image,ExceptionInfo *exception)
502 <p>A description of each parameter follows:</p></ol>
505 <ol><p>the image.</p></ol>
508 <ol><p>return any errors or warnings in this structure.</p></ol>
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