<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Qwt User's Guide: QwtClipper Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.7.3 --> <div id="top"> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">Qwt User's Guide <span id="projectnumber">6.0.1</span></div> </td> </tr> </tbody> </table> </div> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li class="current"><a href="annotated.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="classes.html"><span>Class Index</span></a></li> <li><a href="inherits.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul> </div> </div> <div class="header"> <div class="summary"> <a href="#pub-static-methods">Static Public Member Functions</a> </div> <div class="headertitle"> <h1>QwtClipper Class Reference</h1> </div> </div> <div class="contents"> <!-- doxytag: class="QwtClipper" --> <p>Some clipping algos. <a href="#_details">More...</a></p> <p><code>#include <<a class="el" href="qwt__clipper_8h_source.html">qwt_clipper.h</a>></code></p> <p><a href="class_qwt_clipper-members.html">List of all members.</a></p> <table class="memberdecls"> <tr><td colspan="2"><h2><a name="pub-static-methods"></a> Static Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">static QVector< <a class="el" href="class_qwt_interval.html">QwtInterval</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#ab36605186b4a1c411fccb3b68cf1724a">clipCircle</a> (const QRectF &, const QPointF &, double radius)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">static QPolygon </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#ab42cda85c068194ae0c60f66ecd12022">clipPolygon</a> (const QRect &, const QPolygon &, bool closePolygon=false)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">static QPolygonF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#ab7f737adc53ccd730934197359de3c95">clipPolygonF</a> (const QRectF &, const QPolygonF &, bool closePolygon=false)</td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <div class="textblock"><p>Some clipping algos. </p> </div><hr/><h2>Member Function Documentation</h2> <a class="anchor" id="ab36605186b4a1c411fccb3b68cf1724a"></a><!-- doxytag: member="QwtClipper::clipCircle" ref="ab36605186b4a1c411fccb3b68cf1724a" args="(const QRectF &, const QPointF &, double radius)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QVector< <a class="el" href="class_qwt_interval.html">QwtInterval</a> > QwtClipper::clipCircle </td> <td>(</td> <td class="paramtype">const QRectF & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPointF & </td> <td class="paramname"><em>center</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>radius</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Circle clipping</p> <p><a class="el" href="class_qwt_clipper.html#ab36605186b4a1c411fccb3b68cf1724a">clipCircle()</a> devides a circle into intervals of angles representing arcs of the circle. When the circle is completely inside the clip rectangle an interval [0.0, 2 * M_PI] is returned.</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">center</td><td>Center of the circle </td></tr> <tr><td class="paramname">radius</td><td>Radius of the circle</td></tr> </table> </dd> </dl> <dl class="return"><dt><b>Returns:</b></dt><dd>Arcs of the circle </dd></dl> </div> </div> <a class="anchor" id="ab42cda85c068194ae0c60f66ecd12022"></a><!-- doxytag: member="QwtClipper::clipPolygon" ref="ab42cda85c068194ae0c60f66ecd12022" args="(const QRect &, const QPolygon &, bool closePolygon=false)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QPolygon QwtClipper::clipPolygon </td> <td>(</td> <td class="paramtype">const QRect & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPolygon & </td> <td class="paramname"><em>polygon</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>closePolygon</em> = <code>false</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Sutherland-Hodgman polygon clipping</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">polygon</td><td>Polygon </td></tr> <tr><td class="paramname">closePolygon</td><td>True, when the polygon is closed</td></tr> </table> </dd> </dl> <dl class="return"><dt><b>Returns:</b></dt><dd>Clipped polygon </dd></dl> </div> </div> <a class="anchor" id="ab7f737adc53ccd730934197359de3c95"></a><!-- doxytag: member="QwtClipper::clipPolygonF" ref="ab7f737adc53ccd730934197359de3c95" args="(const QRectF &, const QPolygonF &, bool closePolygon=false)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QPolygonF QwtClipper::clipPolygonF </td> <td>(</td> <td class="paramtype">const QRectF & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPolygonF & </td> <td class="paramname"><em>polygon</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>closePolygon</em> = <code>false</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Sutherland-Hodgman polygon clipping</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">polygon</td><td>Polygon </td></tr> <tr><td class="paramname">closePolygon</td><td>True, when the polygon is closed</td></tr> </table> </dd> </dl> <dl class="return"><dt><b>Returns:</b></dt><dd>Clipped polygon </dd></dl> </div> </div> </div> <hr class="footer"/><address class="footer"><small>Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </small></address> </body> </html>