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allwinner_a64/android/external/ImageMagick/www/api/draw.php
August 71b83c22f1 upload android base code part2
2018-08-08 16:14:42 +08:00

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<!DOCTYPE html>
<html lang="en">
<head>
<meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" />
<title>ImageMagick: MagickCore, C API for ImageMagick: Draw on an Image</title>
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<p class="text-center"><a href="draw.php#AcquireDrawInfo">AcquireDrawInfo</a> &bull; <a href="draw.php#CloneDrawInfo">CloneDrawInfo</a> &bull; <a href="draw.php#DestroyDrawInfo">DestroyDrawInfo</a> &bull; <a href="draw.php#DrawAffineImage">DrawAffineImage</a> &bull; <a href="draw.php#DrawClipPath">DrawClipPath</a> &bull; <a href="draw.php#DrawImage">DrawImage</a> &bull; <a href="draw.php#DrawGradientImage">DrawGradientImage</a> &bull; <a href="draw.php#DrawPatternPath">DrawPatternPath</a> &bull; <a href="draw.php#DrawPrimitive">DrawPrimitive</a> &bull; <a href="draw.php#GetAffineMatrix">GetAffineMatrix</a></p>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="AcquireDrawInfo">AcquireDrawInfo</a></h2>
<p>AcquireDrawInfo() returns a DrawInfo structure properly initialized.</p>
<p>The format of the AcquireDrawInfo method is:</p>
<pre class="text">
DrawInfo *AcquireDrawInfo(void)
</pre>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="CloneDrawInfo">CloneDrawInfo</a></h2>
<p>CloneDrawInfo() makes a copy of the given draw_info structure. If NULL is specified, a new DrawInfo structure is created initialized to default values.</p>
<p>The format of the CloneDrawInfo method is:</p>
<pre class="text">
DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
const DrawInfo *draw_info)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_info</dt>
<dd>the image info. </dd>
<dd> </dd>
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DestroyDrawInfo">DestroyDrawInfo</a></h2>
<p>DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.</p>
<p>The format of the DestroyDrawInfo method is:</p>
<pre class="text">
DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DrawAffineImage">DrawAffineImage</a></h2>
<p>DrawAffineImage() composites the source over the destination image as dictated by the affine transform.</p>
<p>The format of the DrawAffineImage method is:</p>
<pre class="text">
MagickBooleanType DrawAffineImage(Image *image,const Image *source,
const AffineMatrix *affine,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>source</dt>
<dd>the source image. </dd>
<dd> </dd>
<dt>affine</dt>
<dd>the affine transform. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DrawClipPath">DrawClipPath</a></h2>
<p>DrawClipPath() draws the clip path on the image mask.</p>
<p>The format of the DrawClipPath method is:</p>
<pre class="text">
MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
const char *name,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
<dt>name</dt>
<dd>the name of the clip path. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DrawImage">DrawImage</a></h2>
<p>DrawImage() draws a graphic primitive on your image. The primitive may be represented as a string or filename. Precede the filename with an "at" sign (@) and the contents of the file are drawn on the image. You can affect how text is drawn by setting one or more members of the draw info structure.</p>
<p>The format of the DrawImage method is:</p>
<pre class="text">
MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DrawGradientImage">DrawGradientImage</a></h2>
<p>DrawGradientImage() draws a linear gradient on the image.</p>
<p>The format of the DrawGradientImage method is:</p>
<pre class="text">
MagickBooleanType DrawGradientImage(Image *image,
const DrawInfo *draw_info,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DrawPatternPath">DrawPatternPath</a></h2>
<p>DrawPatternPath() draws a pattern.</p>
<p>The format of the DrawPatternPath method is:</p>
<pre class="text">
MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
const char *name,Image **pattern,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
<dt>name</dt>
<dd>the pattern name. </dd>
<dd> </dd>
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="DrawPrimitive">DrawPrimitive</a></h2>
<p>DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.</p>
<p>The format of the DrawPrimitive method is:</p>
<pre class="text">
MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
PrimitiveInfo *primitive_info,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>draw_info</dt>
<dd>the draw info. </dd>
<dd> </dd>
<dt>primitive_info</dt>
<dd>Specifies a pointer to a PrimitiveInfo structure. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/draw_8c.html" id="GetAffineMatrix">GetAffineMatrix</a></h2>
<p>GetAffineMatrix() returns an AffineMatrix initialized to the identity matrix.</p>
<p>The format of the GetAffineMatrix method is:</p>
<pre class="text">
void GetAffineMatrix(AffineMatrix *affine_matrix)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>affine_matrix</dt>
<dd>the affine matrix. </dd>
<dd> </dd>
</dl>
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