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122 lines
5.2 KiB
HTML
122 lines
5.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Get an affine transformation matrix</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.imageaffinematrixget" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imageaffinematrixget</h1>
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<p class="verinfo">(PHP 5 >= 5.5.0, PHP 7)</p><p class="refpurpose"><span class="refname">imageaffinematrixget</span> — <span class="dc-title">Get an affine transformation matrix</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.imageaffinematrixget-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>imageaffinematrixget</strong></span>
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( <span class="methodparam"><span class="type">int</span> <code class="parameter">$type</code></span>
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[, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$options</code></span>
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] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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Returns an affine transformation matrix.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.imageaffinematrixget-parameters">
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<h3 class="title">参数</h3>
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<dl>
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<dt>
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<code class="parameter">type</code></dt>
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<dd>
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<p class="para">
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One of the <strong><code>IMG_AFFINE_*</code></strong> constants.
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</p>
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</dd>
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<dt>
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<code class="parameter">options</code></dt>
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<dd>
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<p class="para">
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If <code class="parameter">type</code> is <strong><code>IMG_AFFINE_TRANSLATE</code></strong>
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or <strong><code>IMG_AFFINE_SCALE</code></strong>,
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<code class="parameter">options</code> has to be an <span class="type"><a href="language.types.array.html" class="type array">array</a></span> with keys <em>x</em>
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and <em>y</em>, both having <span class="type"><a href="language.types.float.html" class="type float">float</a></span> values.
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</p>
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<p class="para">
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If <code class="parameter">type</code> is <strong><code>IMG_AFFINE_ROTATE</code></strong>,
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<strong><code>IMG_AFFINE_SHEAR_HORIZONTAL</code></strong> or <strong><code>IMG_AFFINE_SHEAR_VERTICAL</code></strong>,
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<code class="parameter">options</code> has to be a <span class="type"><a href="language.types.float.html" class="type float">float</a></span> specifying the angle.
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</p>
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</dd>
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</dl>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.imageaffinematrixget-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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An affine transformation matrix (an array with keys
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<em>0</em> to <em>5</em> and float values)
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或者在失败时返回 <strong><code>FALSE</code></strong>.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.imageaffinematrixget-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-3654">
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<p><strong>Example #1 <span class="function"><strong>imageaffinematrixget()</strong></span> example</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$matrix </span><span style="color: #007700">= </span><span style="color: #0000BB">imageaffinematrixget</span><span style="color: #007700">(</span><span style="color: #0000BB">IMG_AFFINE_TRANSLATE</span><span style="color: #007700">, array(</span><span style="color: #DD0000">'x' </span><span style="color: #007700">= </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #DD0000">'y' </span><span style="color: #007700">=> </span><span style="color: #0000BB">3</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$matrix</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Array
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(
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[0] => 1
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[1] => 0
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[2] => 0
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[3] => 1
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[4] => 2
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[5] => 3
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)
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.imageaffinematrixget-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="imageaffine.html" class="function" rel="rdfs-seeAlso">imageaffine()</a> - 返回经过仿射变换后的图像，剪切区域可选</span></li>
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<li class="member"><span class="function"><a href="imageaffinematrixconcat.html" class="function" rel="rdfs-seeAlso">imageaffinematrixconcat()</a> - Concatenate two affine transformation matrices</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |