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| |
| <h1>Module transform Methods</h1> |
| <p class="navigation-index">[<a href="transform.html#AutoOrientImage">AutoOrientImage</a> • <a href="transform.html#ChopImage">ChopImage</a> • <a href="transform.html#CropImage">CropImage</a> • <a href="transform.html#CropImageToTiles">CropImageToTiles</a> • <a href="transform.html#ExcerptImage">ExcerptImage</a> • <a href="transform.html#ExtentImage">ExtentImage</a> • <a href="transform.html#FlipImage">FlipImage</a> • <a href="transform.html#FlopImage">FlopImage</a> • <a href="transform.html#RollImage">RollImage</a> • <a href="transform.html#ShaveImage">ShaveImage</a> • <a href="transform.html#SpliceImage">SpliceImage</a> • <a href="transform.html#TransformImage">TransformImage</a> • <a href="transform.html#to CropImageToTiles">to CropImageToTiles</a> • <a href="transform.html#TransformImages">TransformImages</a> • <a href="transform.html#TransposeImage">TransposeImage</a> • <a href="transform.html#TransverseImage">TransverseImage</a> • <a href="transform.html#TrimImage">TrimImage</a>]</p> |
| |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="AutoOrientImage">AutoOrientImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>AutoOrientImage() adjusts an image so that its orientation is suitable for viewing (i.e. top-left orientation).</p> |
| |
| <p>The format of the AutoOrientImage method is:</p> |
| |
| <pre class="code"> |
| Image *AutoOrientImage(const Image *image, |
| const OrientationType orientation,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>The image.</p> |
| |
| <h5>orientation</h5> |
| <p>Current image orientation.</p> |
| |
| <h5>exception</h5> |
| <p>Return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ChopImage">ChopImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>ChopImage() removes a region of an image and collapses the image to occupy the removed portion.</p> |
| |
| <p>The format of the ChopImage method is:</p> |
| |
| <pre class="code"> |
| Image *ChopImage(const Image *image,const RectangleInfo *chop_info) |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>chop_info</h5> |
| <p>Define the region of the image to chop.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="CropImage">CropImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>CropImage() extracts a region of the image starting at the offset defined by geometry. Region must be fully defined, and no special handling of geometry flags is performed.</p> |
| |
| <p>The format of the CropImage method is:</p> |
| |
| <pre class="code"> |
| Image *CropImage(const Image *image,const RectangleInfo *geometry, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>geometry</h5> |
| <p>Define the region of the image to crop with members x, y, width, and height.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="CropImageToTiles">CropImageToTiles</a></h2> |
| <div class="doc-section"> |
| |
| <p>CropImageToTiles() crops a single image, into a possible list of tiles. This may include a single sub-region of the image. This basically applies all the normal geometry flags for Crop.</p> |
| |
| <p>Image *CropImageToTiles(const Image *image, const RectangleInfo *crop_geometry, ExceptionInfo *exception)</p> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image The transformed image is returned as this parameter.</p> |
| |
| <h5>crop_geometry</h5> |
| <p>A crop geometry string.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ExcerptImage">ExcerptImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>ExcerptImage() returns a excerpt of the image as defined by the geometry.</p> |
| |
| <p>The format of the ExcerptImage method is:</p> |
| |
| <pre class="code"> |
| Image *ExcerptImage(const Image *image,const RectangleInfo *geometry, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>geometry</h5> |
| <p>Define the region of the image to extend with members x, y, width, and height.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ExtentImage">ExtentImage</a></h2> |
| <div class="doc-section"> |
| |
| <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> |
| |
| <p>The format of the ExtentImage method is:</p> |
| |
| <pre class="code"> |
| Image *ExtentImage(const Image *image,const RectangleInfo *geometry, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>geometry</h5> |
| <p>Define the region of the image to extend with members x, y, width, and height.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="FlipImage">FlipImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>FlipImage() creates a vertical mirror image by reflecting the pixels around the central x-axis.</p> |
| |
| <p>The format of the FlipImage method is:</p> |
| |
| <pre class="code"> |
| Image *FlipImage(const Image *image,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="FlopImage">FlopImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>FlopImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis.</p> |
| |
| <p>The format of the FlopImage method is:</p> |
| |
| <pre class="code"> |
| Image *FlopImage(const Image *image,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="RollImage">RollImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>RollImage() offsets an image as defined by x_offset and y_offset.</p> |
| |
| <p>The format of the RollImage method is:</p> |
| |
| <pre class="code"> |
| Image *RollImage(const Image *image,const ssize_t x_offset, |
| const ssize_t y_offset,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>x_offset</h5> |
| <p>the number of columns to roll in the horizontal direction.</p> |
| |
| <h5>y_offset</h5> |
| <p>the number of rows to roll in the vertical direction.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ShaveImage">ShaveImage</a></h2> |
| <div class="doc-section"> |
| |
| <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> |
| |
| <p>The format of the ShaveImage method is:</p> |
| |
| <pre class="code"> |
| Image *ShaveImage(const Image *image,const RectangleInfo *shave_info, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>shave_image</h5> |
| <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> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>shave_info</h5> |
| <p>Specifies a pointer to a RectangleInfo which defines the region of the image to crop.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="SpliceImage">SpliceImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>SpliceImage() splices a solid color into the image as defined by the geometry.</p> |
| |
| <p>The format of the SpliceImage method is:</p> |
| |
| <pre class="code"> |
| Image *SpliceImage(const Image *image,const RectangleInfo *geometry, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>geometry</h5> |
| <p>Define the region of the image to splice with members x, y, width, and height.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransformImage">TransformImage</a></h2> |
| <div class="doc-section"> |
| |
| <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 left as is.</p> |
| |
| <p>This should only be used for single images.</p> |
| |
| <p>The format of the TransformImage method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType TransformImage(Image **image,const char *crop_geometry, |
| const char *image_geometry) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image The transformed image is returned as this parameter.</p> |
| |
| <h5>crop_geometry</h5> |
| <p>A crop geometry string. This geometry defines a subregion of the image to crop.</p> |
| |
| <h5>image_geometry</h5> |
| <p>An image geometry string. This geometry defines the final size of the image.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="to_CropImageToTiles">to CropImageToTiles</a></h2> |
| <div class="doc-section"> |
| |
| <p>to CropImageToTiles() or ResizeImage(), as appropriate.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransformImages">TransformImages</a></h2> |
| <div class="doc-section"> |
| |
| <p>TransformImages() calls TransformImage() on each image of a sequence.</p> |
| |
| <p>The format of the TransformImage method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType TransformImages(Image **image, |
| const char *crop_geometry,const char *image_geometry) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image The transformed image is returned as this parameter.</p> |
| |
| <h5>crop_geometry</h5> |
| <p>A crop geometry string. This geometry defines a subregion of the image to crop.</p> |
| |
| <h5>image_geometry</h5> |
| <p>An image geometry string. This geometry defines the final size of the image.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransposeImage">TransposeImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>TransposeImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis while rotating them by 90 degrees.</p> |
| |
| <p>The format of the TransposeImage method is:</p> |
| |
| <pre class="code"> |
| Image *TransposeImage(const Image *image,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransverseImage">TransverseImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>TransverseImage() creates a vertical mirror image by reflecting the pixels around the central x-axis while rotating them by 270 degrees.</p> |
| |
| <p>The format of the TransverseImage method is:</p> |
| |
| <pre class="code"> |
| Image *TransverseImage(const Image *image,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TrimImage">TrimImage</a></h2> |
| <div class="doc-section"> |
| |
| <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> |
| |
| <p>The format of the TrimImage method is:</p> |
| |
| <pre class="code"> |
| Image *TrimImage(const Image *image,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| |
| </div> |
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