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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>Draws a circle</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.ps-begin-template.html">ps_begin_template</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ps-clip.html">ps_clip</a></div> <div class="up"><a href="ref.ps.html">PS Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.ps-circle" class="refentry"> <div class="refnamediv"> <h1 class="refname">ps_circle</h1> <p class="verinfo">(PECL ps:1.1.0-1.3.5)</p><p class="refpurpose"><span class="refname">ps_circle</span> — <span class="dc-title">Draws a circle</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>ps_circle</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$psdoc</tt></span> , <span class="methodparam"><span class="type">float</span> <tt class="parameter">$x</tt></span> , <span class="methodparam"><span class="type">float</span> <tt class="parameter">$y</tt></span> , <span class="methodparam"><span class="type">float</span> <tt class="parameter">$radius</tt></span> )</div> <p class="para rdfs-comment"> Draws a circle with its middle point at (<i><tt class="parameter">x</tt></i>, <i><tt class="parameter">y</tt></i>). The circle starts and ends at position (<i><tt class="parameter">x</tt></i>+<i><tt class="parameter">radius</tt></i>, <i><tt class="parameter">y</tt></i>). If this function is called outside a path it will start a new path. If it is called within a path it will add the circle as a subpath. If the last drawing operation does not end in point (<i><tt class="parameter">x</tt></i>+<i><tt class="parameter">radius</tt></i>, <i><tt class="parameter">y</tt></i>) then there will be a gap in the path. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">psdoc</tt></i></span> <dd> <p class="para"> Resource identifier of the postscript file as returned by <a href="function.ps-new.html" class="function">ps_new()</a>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">x</tt></i></span> <dd> <p class="para"> The x-coordinate of the circle's middle point. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">y</tt></i></span> <dd> <p class="para"> The y-coordinate of the circle's middle point. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">radius</tt></i></span> <dd> <p class="para"> The radius of the circle </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 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.ps-arc.html" class="function" rel="rdfs-seeAlso">ps_arc()</a></li> <li class="member"><a href="function.ps-arcn.html" class="function" rel="rdfs-seeAlso">ps_arcn()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.ps-begin-template.html">ps_begin_template</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ps-clip.html">ps_clip</a></div> <div class="up"><a href="ref.ps.html">PS 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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