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144 lines
5.2 KiB
HTML
144 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>Creates a shading for later use</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.ps-shading" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">ps_shading</h1>
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<p class="verinfo">(PECL ps >= 1.3.0)</p><p class="refpurpose"><span class="refname">ps_shading</span> — <span class="dc-title">Creates a shading for later use</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.ps-shading-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>ps_shading</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$psdoc</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$type</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$x0</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$y0</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$x1</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$y1</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$c1</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$c2</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$c3</code></span>
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, <span class="methodparam"><span class="type">float</span> <code class="parameter">$c4</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$optlist</code></span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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Creates a shading, which can be used by <span class="function"><a href="ps_shfill.html" class="function">ps_shfill()</a></span> or
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<span class="function"><a href="ps_shading_pattern.html" class="function">ps_shading_pattern()</a></span>.
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</p>
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<p class="para">
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The color of the shading can be in any color space except for
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<em>pattern</em>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.ps-shading-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">psdoc</code></dt>
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<dd>
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<p class="para">
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Resource identifier of the postscript file
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as returned by <span class="function"><a href="ps_new.html" class="function">ps_new()</a></span>.
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</p>
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</dd>
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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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The type of shading can be either <em>radial</em> or
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<em>axial</em>. Each shading starts with the current fill
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color and ends with the given color values passed in the parameters
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<code class="parameter">c1</code> to <code class="parameter">c4</code>
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(see <span class="function"><a href="ps_setcolor.html" class="function">ps_setcolor()</a></span> for their meaning).
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</p>
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</dd>
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<dt>
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<code class="parameter">x0, x1, y0, y1</code></dt>
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<dd>
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<p class="para">
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The coordinates <code class="parameter">x0</code>, <code class="parameter">y0</code>,
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<code class="parameter">x1</code>, <code class="parameter">y1</code> are the start and
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end point of the shading. If the type of shading is
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<em>radial</em> the two points are the middle points of
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a starting and ending circle.
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</p>
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</dd>
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<dt>
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<code class="parameter">c1, c2, c3, c4</code></dt>
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<dd>
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<p class="para">
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See <span class="function"><a href="ps_setcolor.html" class="function">ps_setcolor()</a></span> for their meaning.
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</p>
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</dd>
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<dt>
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<code class="parameter">optlist</code></dt>
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<dd>
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<p class="para">
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If the shading is of type <em>radial</em> the
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<code class="parameter">optlist</code> must also contain the parameters
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<em>r0</em> and <em>r1</em> with the radius of the
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start and end circle.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.ps-shading-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns the identifier of the pattern 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 seealso" id="refsect1-function.ps-shading-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="ps_shading_pattern.html" class="function" rel="rdfs-seeAlso">ps_shading_pattern()</a> - Creates a pattern based on a shading</span></li>
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<li class="member"><span class="function"><a href="ps_shfill.html" class="function" rel="rdfs-seeAlso">ps_shfill()</a> - Fills an area with a shading</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> |