Google Git
Sign in
android / platform / external / ImageMagick / 346cf7f5b84b846bd3ed13bcc6a31a23d608cfa2 / . / www / api / draw.html
blob: 88ad190f594ec5e9476f6af62764c3d96cc0758a [file] [log] [blame]
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>ImageMagick - MagickCore, C API: Draw on an Image</title>
<meta name="application-name" content="ImageMagick" />
<meta name="description" content="Use ImageMagick® to create, edit, compose, and convert digital images. Resize an image, crop it, change its shades and colors, add captions, and more." />
<meta name="application-url" content="https://imagemagick.org" />
<meta name="generator" content="PHP" />
<meta name="keywords" content="magickcore, c, api:, draw, on, an, image, image processing software" />
<meta name="rating" content="GENERAL" />
<meta name="robots" content="INDEX, FOLLOW" />
<meta name="generator" content="ImageMagick Studio LLC" />
<meta name="author" content="ImageMagick Studio LLC" />
<meta name="revisit-after" content="2 DAYS" />
<meta name="resource-type" content="document" />
<meta name="copyright" content="Copyright (c) 1999-2020 ImageMagick Studio LLC" />
<meta name="distribution" content="Global" />
<meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1" />
<meta property='og:url' content='../../' />
<meta property='og:title' content='ImageMagick' />
<meta property='og:image' content='../../../images/logo.png' />
<meta property='og:type' content='website' />
<meta property='og:site_name' content='ImageMagick' />
<meta property='og:description' content="Create, Edit, Compose, or Convert Digital Images" />
<meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" />
<link href="draw.html" rel="canonical" />
<link href="../../../images/wand.png" rel="icon" />
<link href="../../../images/wand.ico" rel="shortcut icon" />
<link href="../../assets/magick.css" rel="stylesheet" />
</head>
<body>
<nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top">
<div class="container-fluid">
<a class="navbar-brand" href="../../"><img class="d-block" id="icon" alt="ImageMagick" width="32" height="32" src="../../../images/wand.ico"/></a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#magick-navbars" aria-controls="magick-navbars" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="magick-navbars">
<ul class="navbar-nav me-auto mb-2 mb-md-0">
<li class="nav-item">
<a class="nav-link " href="../../www/index.html">Home</a>
</li>
<li class="nav-item">
<a class="nav-link " href="../../www/download.html">Download</a>
</li>
<li class="nav-item">
<a class="nav-link " href="../../www/command-line-tools.html">Tools</a>
</li>
<li class="nav-item">
<a class="nav-link " href="../../www/command-line-processing.html">CLI</a>
</li>
<li class="nav-item">
<a class="nav-link " href="../../www/develop.html">Develop</a>
</li>
<li class="nav-item">
<a class="nav-link" target="_blank" href="https://github.com/ImageMagick/ImageMagick/discussions">Community</a>
</li>
<li class="nav-item">
<iframe src="https://github.com/sponsors/ImageMagick/button" title="Sponsor ImageMagick" height="35" width="107" style="border: 0;"></iframe>
</li>
</ul>
<form class="d-flex form-inline" action="https://imagemagick.org/script/search.php">
<input class="form-control me-2" type="text" name="q" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit" name="sa">Search</button>
</form>
</div>
</div>
</nav>
<div class="container">
<script async="async" src="https://localhost/pagead/js/adsbygoogle.js"></script>
<ins class="adsbygoogle"
style="display:block"
data-ad-client="ca-pub-3129977114552745"
data-ad-slot="6345125851"
data-full-width-responsive="true"
data-ad-format="horizontal"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
</div>
<main class="container">
<div class="magick-template">
<div class="magick-header">
<p class="text-center"><a href="draw.html#AcquireDrawInfo">AcquireDrawInfo</a> &#8226; <a href="draw.html#CloneDrawInfo">CloneDrawInfo</a> &#8226; <a href="draw.html#DestroyDrawInfo">DestroyDrawInfo</a> &#8226; <a href="draw.html#DrawAffineImage">DrawAffineImage</a> &#8226; <a href="draw.html#DrawClipPath">DrawClipPath</a> &#8226; <a href="draw.html#DrawClippingMask">DrawClippingMask</a> &#8226; <a href="draw.html#DrawCompositeMask">DrawCompositeMask</a> &#8226; <a href="draw.html#DrawGradientImage">DrawGradientImage</a> &#8226; <a href="draw.html#DrawImage">DrawImage</a> &#8226; <a href="draw.html#DrawPatternPath">DrawPatternPath</a> &#8226; <a href="draw.html#DrawPrimitive">DrawPrimitive</a> &#8226; <a href="draw.html#GetAffineMatrix">GetAffineMatrix</a></p>
<h2><a href="../../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="../../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="../../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="../../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="../../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 *id,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>id</dt>
<dd>the clip path id. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="../../api/MagickCore/draw_8c.html" id="DrawClippingMask">DrawClippingMask</a></h2>
<p>DrawClippingMask() draws the clip path and returns it as an image clipping mask.</p>
<p>The format of the DrawClippingMask method is:</p>
<pre class="text">
Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
const char *id,const char *clip_path,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>id</dt>
<dd>the clip path id. </dd>
<dd> </dd>
<dt>clip_path</dt>
<dd>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="../../api/MagickCore/draw_8c.html" id="DrawCompositeMask">DrawCompositeMask</a></h2>
<p>DrawCompositeMask() draws the mask path and returns it as an image mask.</p>
<p>The format of the DrawCompositeMask method is:</p>
<pre class="text">
Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
const char *id,const char *mask_path,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>id</dt>
<dd>the mask path id. </dd>
<dd> </dd>
<dt>mask_path</dt>
<dd>the mask path. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="../../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="../../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="../../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="../../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="../../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>
</div>
</div>
</main><!-- /.container -->
<footer class="magick-footer">
<div class="container-fluid">
<a href="../../www/security-policy.html">Security</a> •
<a href="../../www/news.html">News</a>
<a href="draw.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../../images/wand.ico"/></a>
<a href="../../www/links.html">Related</a> •
<a href="../../www/sitemap.html">Sitemap</a>
<br/>
<a href="../../www/support.html">Sponsor</a> •
<a href="../../www/cite.html">Cite</a> •
<a href="http://pgp.mit.edu/pks/lookup?op=get&amp;search=0x89AB63D48277377A">Public Key</a> •
<a href="../../www/contact.html">Contact Us</a>
<br/>
<a href="https://github.com/imagemagick/imagemagick" target="_blank" rel="noopener" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 499.36" width="2%" height="2%" role="img" focusable="false"><title>GitHub</title><path fill="currentColor" fill-rule="evenodd" d="M256 0C114.64 0 0 114.61 0 256c0 113.09 73.34 209 175.08 242.9 12.8 2.35 17.47-5.56 17.47-12.34 0-6.08-.22-22.18-.35-43.54-71.2 15.49-86.2-34.34-86.2-34.34-11.64-29.57-28.42-37.45-28.42-37.45-23.27-15.84 1.73-15.55 1.73-15.55 25.69 1.81 39.21 26.38 39.21 26.38 22.84 39.12 59.92 27.82 74.5 21.27 2.33-16.54 8.94-27.82 16.25-34.22-56.84-6.43-116.6-28.43-116.6-126.49 0-27.95 10-50.8 26.35-68.69-2.63-6.48-11.42-32.5 2.51-67.75 0 0 21.49-6.88 70.4 26.24a242.65 242.65 0 0 1 128.18 0c48.87-33.13 70.33-26.24 70.33-26.24 14 35.25 5.18 61.27 2.55 67.75 16.41 17.9 26.31 40.75 26.31 68.69 0 98.35-59.85 120-116.88 126.32 9.19 7.9 17.38 23.53 17.38 47.41 0 34.22-.31 61.83-.31 70.23 0 6.85 4.61 14.81 17.6 12.31C438.72 464.97 512 369.08 512 256.02 512 114.62 397.37 0 256 0z"/></svg></a> •
<a href="https://twitter.com/imagemagick" target="_blank" rel="noopener" aria-label="Twitter"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 416.32" width="2%" height="2%" role="img" focusable="false"><title>Twitter</title><path fill="currentColor" d="M160.83 416.32c193.2 0 298.92-160.22 298.92-298.92 0-4.51 0-9-.2-13.52A214 214 0 0 0 512 49.38a212.93 212.93 0 0 1-60.44 16.6 105.7 105.7 0 0 0 46.3-58.19 209 209 0 0 1-66.79 25.37 105.09 105.09 0 0 0-181.73 71.91 116.12 116.12 0 0 0 2.66 24c-87.28-4.3-164.73-46.3-216.56-109.82A105.48 105.48 0 0 0 68 159.6a106.27 106.27 0 0 1-47.53-13.11v1.43a105.28 105.28 0 0 0 84.21 103.06 105.67 105.67 0 0 1-47.33 1.84 105.06 105.06 0 0 0 98.14 72.94A210.72 210.72 0 0 1 25 370.84a202.17 202.17 0 0 1-25-1.43 298.85 298.85 0 0 0 160.83 46.92"/></svg></a>
<br/>
<small>© 1999-2021 ImageMagick Studio LLC</small>
</div>
</footer>
<!-- Javascript assets -->
<script src="../../assets/magick.js" ></script>
</body>
</html>