<!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: QwtCPointerData 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 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QwtCPointerData:</div> <div class="dyncontent"> <div class="center"><img src="class_qwt_c_pointer_data__inherit__graph.png" border="0" usemap="#_qwt_c_pointer_data_inherit__map" alt="Inheritance graph"/></div> <map name="_qwt_c_pointer_data_inherit__map" id="_qwt_c_pointer_data_inherit__map"> <area shape="rect" id="node2" href="class_qwt_series_data.html" title="QwtSeriesData\< QPointF \>" alt="" coords="5,101,187,131"/><area shape="rect" id="node4" href="class_qwt_series_data.html" title="Abstract interface for iterating over samples." alt="" coords="27,5,165,35"/></map> <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div> <p><a href="class_qwt_c_pointer_data-members.html">List of all members.</a></p> <table class="memberdecls"> <tr><td colspan="2"><h2><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_c_pointer_data.html#aecc3e98a3b2c4350212fa7b9e97110aa">boundingRect</a> () const </td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_c_pointer_data.html#a795b86d69226d1aabf9356848da6c083">QwtCPointerData</a> (const double *x, const double *y, size_t size)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual QPointF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_c_pointer_data.html#a5e01b287eca7d0c4b52bbf514c5244d2">sample</a> (size_t i) const </td></tr> <tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a81466c72589c03310543d17e1f1d0ab7"></a><!-- doxytag: member="QwtCPointerData::setRectOfInterest" ref="a81466c72589c03310543d17e1f1d0ab7" args="(const QRectF &)" --> virtual void </td><td class="memItemRight" valign="bottom"><b>setRectOfInterest</b> (const QRectF &)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_c_pointer_data.html#a780b9ae434856509cef9bbe954f03a3e">size</a> () const </td></tr> <tr><td class="memItemLeft" align="right" valign="top">const double * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_c_pointer_data.html#a6409b0bcf77674d1970185c6c3245e26">xData</a> () const </td></tr> <tr><td class="memItemLeft" align="right" valign="top">const double * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_c_pointer_data.html#a7c538ed7b3e4cc5db6d4d97c09ed9d73">yData</a> () const </td></tr> <tr><td colspan="2"><h2><a name="pro-attribs"></a> Protected Attributes</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a24fbbcb0baa0c728117d2e6764d00414">d_boundingRect</a></td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <div class="textblock"><p>Data class containing two pointers to memory blocks of doubles. </p> </div><hr/><h2>Constructor & Destructor Documentation</h2> <a class="anchor" id="a795b86d69226d1aabf9356848da6c083"></a><!-- doxytag: member="QwtCPointerData::QwtCPointerData" ref="a795b86d69226d1aabf9356848da6c083" args="(const double *x, const double *y, size_t size)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QwtCPointerData::QwtCPointerData </td> <td>(</td> <td class="paramtype">const double * </td> <td class="paramname"><em>x</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const double * </td> <td class="paramname"><em>y</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">size_t </td> <td class="paramname"><em>size</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Constructor</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">x</td><td>Array of x values </td></tr> <tr><td class="paramname">y</td><td>Array of y values </td></tr> <tr><td class="paramname">size</td><td>Size of the x and y arrays</td></tr> </table> </dd> </dl> <dl class="warning"><dt><b>Warning:</b></dt><dd>The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtPlotCPointer object.</dd></dl> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_series_item.html#adba072515f7c71c923985882129878c4">QwtPlotCurve::setData()</a>, <a class="el" href="class_qwt_plot_curve.html#afd13c94e23520dacbc37b4d0fd036a8b" title="Initialize the data by pointing to memory blocks which are not managed by QwtPlotCurve.">QwtPlotCurve::setRawSamples()</a> </dd></dl> </div> </div> <hr/><h2>Member Function Documentation</h2> <a class="anchor" id="aecc3e98a3b2c4350212fa7b9e97110aa"></a><!-- doxytag: member="QwtCPointerData::boundingRect" ref="aecc3e98a3b2c4350212fa7b9e97110aa" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QRectF QwtCPointerData::boundingRect </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Calculate the bounding rect. </p> <p>The bounding rectangle is calculated once by iterating over all points and is stored for all following requests.</p> <dl class="return"><dt><b>Returns:</b></dt><dd>Bounding rectangle </dd></dl> <p>Implements <a class="el" href="class_qwt_series_data.html#aedb969ba51a27d88d26ad7f7cb1c2c7f">QwtSeriesData< QPointF ></a>.</p> </div> </div> <a class="anchor" id="a5e01b287eca7d0c4b52bbf514c5244d2"></a><!-- doxytag: member="QwtCPointerData::sample" ref="a5e01b287eca7d0c4b52bbf514c5244d2" args="(size_t i) const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QPointF QwtCPointerData::sample </td> <td>(</td> <td class="paramtype">size_t </td> <td class="paramname"><em>i</em></td><td>)</td> <td> const<code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Return the sample at position i</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">i</td><td>Index </td></tr> </table> </dd> </dl> <dl class="return"><dt><b>Returns:</b></dt><dd>Sample at position i </dd></dl> <p>Implements <a class="el" href="class_qwt_series_data.html#ae8650d16c07c58f01897ab48658a3266">QwtSeriesData< QPointF ></a>.</p> </div> </div> <a class="anchor" id="a780b9ae434856509cef9bbe954f03a3e"></a><!-- doxytag: member="QwtCPointerData::size" ref="a780b9ae434856509cef9bbe954f03a3e" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">size_t QwtCPointerData::size </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <dl class="return"><dt><b>Returns:</b></dt><dd>Size of the data set </dd></dl> <p>Implements <a class="el" href="class_qwt_series_data.html#a3cfe5b26fc55a887ac85b0103ae80a3e">QwtSeriesData< QPointF ></a>.</p> </div> </div> <a class="anchor" id="a6409b0bcf77674d1970185c6c3245e26"></a><!-- doxytag: member="QwtCPointerData::xData" ref="a6409b0bcf77674d1970185c6c3245e26" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const double * QwtCPointerData::xData </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </div> <div class="memdoc"> <dl class="return"><dt><b>Returns:</b></dt><dd>Array of the x-values </dd></dl> </div> </div> <a class="anchor" id="a7c538ed7b3e4cc5db6d4d97c09ed9d73"></a><!-- doxytag: member="QwtCPointerData::yData" ref="a7c538ed7b3e4cc5db6d4d97c09ed9d73" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const double * QwtCPointerData::yData </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </div> <div class="memdoc"> <dl class="return"><dt><b>Returns:</b></dt><dd>Array of the y-values </dd></dl> </div> </div> <hr/><h2>Member Data Documentation</h2> <a class="anchor" id="a24fbbcb0baa0c728117d2e6764d00414"></a><!-- doxytag: member="QwtCPointerData::d_boundingRect" ref="a24fbbcb0baa0c728117d2e6764d00414" args="" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QRectF <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF >::<a class="el" href="class_qwt_series_data.html#a24fbbcb0baa0c728117d2e6764d00414">d_boundingRect</a><code> [mutable, protected, inherited]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Can be used to cache a calculated bounding rectangle. </p> </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>