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<p>A bit field corresponding to the pixels of a rectangle.
<a href="class_qwt_pixel_matrix.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="qwt__pixel__matrix_8h_source.html">qwt_pixel_matrix.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtPixelMatrix:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_pixel_matrix__inherit__graph.png" border="0" usemap="#_qwt_pixel_matrix_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_pixel_matrix_inherit__map" id="_qwt_pixel_matrix_inherit__map">
</map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aa197eddf30db429ab267db2a875e7d71"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#aa197eddf30db429ab267db2a875e7d71">QwtPixelMatrix</a> (const QRect &amp;<a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect</a>)</td></tr>
<tr class="memdesc:aa197eddf30db429ab267db2a875e7d71"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="#aa197eddf30db429ab267db2a875e7d71">More...</a><br /></td></tr>
<tr class="separator:aa197eddf30db429ab267db2a875e7d71"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6691629e198fb39e6f653038cfb74f6b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6691629e198fb39e6f653038cfb74f6b"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a6691629e198fb39e6f653038cfb74f6b">~QwtPixelMatrix</a> ()</td></tr>
<tr class="memdesc:a6691629e198fb39e6f653038cfb74f6b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a6691629e198fb39e6f653038cfb74f6b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae8150f8d1f1922746172e9da1488e98b"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#ae8150f8d1f1922746172e9da1488e98b">setRect</a> (const QRect &amp;<a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect</a>)</td></tr>
<tr class="separator:ae8150f8d1f1922746172e9da1488e98b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a05162507dc01b9616ef4b6b079786599"><td class="memItemLeft" align="right" valign="top">QRect&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect</a> () const </td></tr>
<tr class="separator:a05162507dc01b9616ef4b6b079786599"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1089a8d1da928ed35766da496a9b234e"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a1089a8d1da928ed35766da496a9b234e">testPixel</a> (int x, int y) const </td></tr>
<tr class="memdesc:a1089a8d1da928ed35766da496a9b234e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test if a pixel has been set. <a href="#a1089a8d1da928ed35766da496a9b234e">More...</a><br /></td></tr>
<tr class="separator:a1089a8d1da928ed35766da496a9b234e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a51c2ecd161c0c93dccb62fcf640ff280"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a51c2ecd161c0c93dccb62fcf640ff280">testAndSetPixel</a> (int x, int y, bool on)</td></tr>
<tr class="memdesc:a51c2ecd161c0c93dccb62fcf640ff280"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set a pixel and test if a pixel has been set before. <a href="#a51c2ecd161c0c93dccb62fcf640ff280">More...</a><br /></td></tr>
<tr class="separator:a51c2ecd161c0c93dccb62fcf640ff280"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a786989b4ff383d7939edbba31c89178d"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a786989b4ff383d7939edbba31c89178d">index</a> (int x, int y) const </td></tr>
<tr class="memdesc:a786989b4ff383d7939edbba31c89178d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the index in the bit field corresponding to a position. <a href="#a786989b4ff383d7939edbba31c89178d">More...</a><br /></td></tr>
<tr class="separator:a786989b4ff383d7939edbba31c89178d"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A bit field corresponding to the pixels of a rectangle. </p>
<p><a class="el" href="class_qwt_pixel_matrix.html" title="A bit field corresponding to the pixels of a rectangle. ">QwtPixelMatrix</a> is intended to filter out duplicates in an unsorted array of points. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="aa197eddf30db429ab267db2a875e7d71"></a>
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<td class="memname">QwtPixelMatrix::QwtPixelMatrix </td>
<td>(</td>
<td class="paramtype">const QRect &amp;&#160;</td>
<td class="paramname"><em>rect</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Constructor. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">rect</td><td>Bounding rectangle for the matrix </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="a786989b4ff383d7939edbba31c89178d"></a>
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<td class="memname">int QwtPixelMatrix::index </td>
<td>(</td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>x</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>y</em>&#160;</td>
</tr>
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<td></td>
<td>)</td>
<td></td><td> const</td>
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<p>Calculate the index in the bit field corresponding to a position. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>X-coordinate </td></tr>
<tr><td class="paramname">y</td><td>Y-coordinate </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Index, when <a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect()</a> contains pos - otherwise -1. </dd></dl>
</div>
</div>
<a class="anchor" id="a05162507dc01b9616ef4b6b079786599"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">QRect QwtPixelMatrix::rect </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns</dt><dd>Bounding rectangle </dd></dl>
</div>
</div>
<a class="anchor" id="ae8150f8d1f1922746172e9da1488e98b"></a>
<div class="memitem">
<div class="memproto">
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<tr>
<td class="memname">void QwtPixelMatrix::setRect </td>
<td>(</td>
<td class="paramtype">const QRect &amp;&#160;</td>
<td class="paramname"><em>rect</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Set the bounding rectangle of the matrix</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">rect</td><td>Bounding rectangle</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>All bits are cleared </dd></dl>
</div>
</div>
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<td class="memname">bool QwtPixelMatrix::testAndSetPixel </td>
<td>(</td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>x</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>y</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool&#160;</td>
<td class="paramname"><em>on</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Set a pixel and test if a pixel has been set before. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>X-coordinate </td></tr>
<tr><td class="paramname">y</td><td>Y-coordinate </td></tr>
<tr><td class="paramname">on</td><td>Set/Clear the pixel</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true, when pos is outside of <a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect()</a>, or when the pixel was set before. </dd></dl>
</div>
</div>
<a class="anchor" id="a1089a8d1da928ed35766da496a9b234e"></a>
<div class="memitem">
<div class="memproto">
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<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">bool QwtPixelMatrix::testPixel </td>
<td>(</td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>x</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>y</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Test if a pixel has been set. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>X-coordinate </td></tr>
<tr><td class="paramname">y</td><td>Y-coordinate</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true, when pos is outside of <a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect()</a>, or when the pixel has already been set. </dd></dl>
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