📄 function.imagefilledpolygon.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Draw a filled polygon</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagefilledellipse.html">imagefilledellipse</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagefilledrectangle.html">imagefilledrectangle</a></div> <div class="up"><a href="ref.image.html">GD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.imagefilledpolygon" class="refentry"> <div class="refnamediv"> <h1 class="refname">imagefilledpolygon</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">imagefilledpolygon</span> — <span class="dc-title">Draw a filled polygon</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>imagefilledpolygon</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$image</tt></span> , <span class="methodparam"><span class="type">array</span> <tt class="parameter">$points</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$num_points</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$color</tt></span> )</div> <p class="para rdfs-comment"> <b>imagefilledpolygon()</b> creates a filled polygon in the given <i><tt class="parameter">image</tt></i>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt><span class="term"><i><tt class="parameter">image</tt></i></span><dd><p class="para">An image resource, returned by one of the image creation functions, such as <a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a>.</p></dd></dt> <dt> <span class="term"><i><tt class="parameter">points</tt></i></span> <dd> <p class="para"> An array containing the <i>x</i> and <i>y</i> coordinates of the polygons vertices consecutively. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">num_points</tt></i></span> <dd> <p class="para"> Total number of vertices, which must be bigger than 3. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">color</tt></i></span> <dd> <p class="para"> A color identifier created with <a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>imagefilledpolygon()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// set up array of points for polygon<br /></span><span style="color: #0000BB">$values </span><span style="color: #007700">= array(<br /> </span><span style="color: #0000BB">40</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #FF8000">// Point 1 (x, y)<br /> </span><span style="color: #0000BB">20</span><span style="color: #007700">, </span><span style="color: #0000BB">240</span><span style="color: #007700">, </span><span style="color: #FF8000">// Point 2 (x, y)<br /> </span><span style="color: #0000BB">60</span><span style="color: #007700">, </span><span style="color: #0000BB">60</span><span style="color: #007700">, </span><span style="color: #FF8000">// Point 3 (x, y)<br /> </span><span style="color: #0000BB">240</span><span style="color: #007700">, </span><span style="color: #0000BB">20</span><span style="color: #007700">, </span><span style="color: #FF8000">// Point 4 (x, y)<br /> </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">40</span><span style="color: #007700">, </span><span style="color: #FF8000">// Point 5 (x, y)<br /> </span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #0000BB">10 </span><span style="color: #FF8000">// Point 6 (x, y)<br /> </span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// create image<br /></span><span style="color: #0000BB">$image </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">250</span><span style="color: #007700">, </span><span style="color: #0000BB">250</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// allocate colors<br /></span><span style="color: #0000BB">$bg </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$image</span><span style="color: #007700">, </span><span style="color: #0000BB">200</span><span style="color: #007700">, </span><span style="color: #0000BB">200</span><span style="color: #007700">, </span><span style="color: #0000BB">200</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$blue </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$image</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// fill the background<br /></span><span style="color: #0000BB">imagefilledrectangle</span><span style="color: #007700">(</span><span style="color: #0000BB">$image</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">249</span><span style="color: #007700">, </span><span style="color: #0000BB">249</span><span style="color: #007700">, </span><span style="color: #0000BB">$bg</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// draw a polygon<br /></span><span style="color: #0000BB">imagefilledpolygon</span><span style="color: #007700">(</span><span style="color: #0000BB">$image</span><span style="color: #007700">, </span><span style="color: #0000BB">$values</span><span style="color: #007700">, </span><span style="color: #0000BB">6</span><span style="color: #007700">, </span><span style="color: #0000BB">$blue</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// flush image<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: image/png'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$image</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$image</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="mediaobject"> <div class="imageobject"> <img src="figures/image.imagefilledpolygon.png" /> </div> </div> </div> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagefilledellipse.html">imagefilledellipse</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagefilledrectangle.html">imagefilledrectangle</a></div> <div class="up"><a href="ref.image.html">GD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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