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<a href="#pub-types">Public Types</a> |
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<div class="title">QwtPointMapper Class Reference</div> </div>
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<p>A helper class for translating a series of points.
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<a href="class_qwt_point_mapper.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="qwt__point__mapper_8h_source.html">qwt_point_mapper.h</a>></code></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
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Public Types</h2></td></tr>
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<tr class="memitem:aafc07ceadb3f311057037ca8680e1c23"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a> { <a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23a0e367a1519b0005cad8bb324854cc8e3">RoundPoints</a> = 0x01
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, <a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23a288f41a8e4d53c895f7bffaaa9b5d9e4">WeedOutPoints</a> = 0x02
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, <a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23a7708d7fa581149d1a443f0eaf7066b06">WeedOutIntermediatePoints</a> = 0x04
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}</td></tr>
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<tr class="memdesc:aafc07ceadb3f311057037ca8680e1c23"><td class="mdescLeft"> </td><td class="mdescRight">Flags affecting the transformation process. <a href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">More...</a><br /></td></tr>
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<tr class="separator:aafc07ceadb3f311057037ca8680e1c23"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aba6206c8750314c543f0e3b771ae1641"><td class="memItemLeft" align="right" valign="top">typedef QFlags< <a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#aba6206c8750314c543f0e3b771ae1641">TransformationFlags</a></td></tr>
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<tr class="separator:aba6206c8750314c543f0e3b771ae1641"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a6e5eabb9c1af9b035023376fa2e1c472"><td class="memItemLeft" align="right" valign="top"><a id="a6e5eabb9c1af9b035023376fa2e1c472"></a>
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 </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a6e5eabb9c1af9b035023376fa2e1c472">QwtPointMapper</a> ()</td></tr>
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<tr class="memdesc:a6e5eabb9c1af9b035023376fa2e1c472"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br /></td></tr>
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<tr class="separator:a6e5eabb9c1af9b035023376fa2e1c472"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aabe6a70dae5784e8b67f4527c51e0c09"><td class="memItemLeft" align="right" valign="top"><a id="aabe6a70dae5784e8b67f4527c51e0c09"></a>
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 </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#aabe6a70dae5784e8b67f4527c51e0c09">~QwtPointMapper</a> ()</td></tr>
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<tr class="memdesc:aabe6a70dae5784e8b67f4527c51e0c09"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br /></td></tr>
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<tr class="separator:aabe6a70dae5784e8b67f4527c51e0c09"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab556bd339cca487f25e2d894c51abe85"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#ab556bd339cca487f25e2d894c51abe85">setFlags</a> (<a class="el" href="class_qwt_point_mapper.html#aba6206c8750314c543f0e3b771ae1641">TransformationFlags</a>)</td></tr>
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<tr class="separator:ab556bd339cca487f25e2d894c51abe85"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3bed903e8aeaebd8153c6c75121bfb01"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_point_mapper.html#aba6206c8750314c543f0e3b771ae1641">TransformationFlags</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a3bed903e8aeaebd8153c6c75121bfb01">flags</a> () const</td></tr>
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<tr class="separator:a3bed903e8aeaebd8153c6c75121bfb01"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6e03e14718d3d66a0f6a02fec7fcaeed"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a6e03e14718d3d66a0f6a02fec7fcaeed">setFlag</a> (<a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a>, bool on=true)</td></tr>
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<tr class="separator:a6e03e14718d3d66a0f6a02fec7fcaeed"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5083f71473fd88e23363a587d84779f3"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a5083f71473fd88e23363a587d84779f3">testFlag</a> (<a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a>) const</td></tr>
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<tr class="separator:a5083f71473fd88e23363a587d84779f3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a03910571df91575456e98134f6543650"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a03910571df91575456e98134f6543650">setBoundingRect</a> (const QRectF &)</td></tr>
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<tr class="separator:a03910571df91575456e98134f6543650"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a22846085780856a6ca36776d387d5b21"><td class="memItemLeft" align="right" valign="top">QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a22846085780856a6ca36776d387d5b21">boundingRect</a> () const</td></tr>
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<tr class="separator:a22846085780856a6ca36776d387d5b21"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a394341ccba09dd293dddc7bb4f599891"><td class="memItemLeft" align="right" valign="top">QPolygonF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a394341ccba09dd293dddc7bb4f599891">toPolygonF</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap, const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > *series, int from, int to) const</td></tr>
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<tr class="memdesc:a394341ccba09dd293dddc7bb4f599891"><td class="mdescLeft"> </td><td class="mdescRight">Translate a series of points into a QPolygonF. <a href="class_qwt_point_mapper.html#a394341ccba09dd293dddc7bb4f599891">More...</a><br /></td></tr>
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<tr class="separator:a394341ccba09dd293dddc7bb4f599891"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab1dde54ddb1c522e17e28ff47fbaa82a"><td class="memItemLeft" align="right" valign="top">QPolygon </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#ab1dde54ddb1c522e17e28ff47fbaa82a">toPolygon</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap, const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > *series, int from, int to) const</td></tr>
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<tr class="memdesc:ab1dde54ddb1c522e17e28ff47fbaa82a"><td class="mdescLeft"> </td><td class="mdescRight">Translate a series of points into a QPolygon. <a href="class_qwt_point_mapper.html#ab1dde54ddb1c522e17e28ff47fbaa82a">More...</a><br /></td></tr>
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<tr class="separator:ab1dde54ddb1c522e17e28ff47fbaa82a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad580fc22b1bfcc353e711712cad15ae0"><td class="memItemLeft" align="right" valign="top">QPolygon </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#ad580fc22b1bfcc353e711712cad15ae0">toPoints</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap, const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > *series, int from, int to) const</td></tr>
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<tr class="memdesc:ad580fc22b1bfcc353e711712cad15ae0"><td class="mdescLeft"> </td><td class="mdescRight">Translate a series of points into a QPolygon. <a href="class_qwt_point_mapper.html#ad580fc22b1bfcc353e711712cad15ae0">More...</a><br /></td></tr>
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<tr class="separator:ad580fc22b1bfcc353e711712cad15ae0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a69d9ab6398de007d851e7d386ec5dfb7"><td class="memItemLeft" align="right" valign="top">QPolygonF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a69d9ab6398de007d851e7d386ec5dfb7">toPointsF</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap, const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > *series, int from, int to) const</td></tr>
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<tr class="memdesc:a69d9ab6398de007d851e7d386ec5dfb7"><td class="mdescLeft"> </td><td class="mdescRight">Translate a series into a QPolygonF. <a href="class_qwt_point_mapper.html#a69d9ab6398de007d851e7d386ec5dfb7">More...</a><br /></td></tr>
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<tr class="separator:a69d9ab6398de007d851e7d386ec5dfb7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a48feb94a44632dafc78405e7a42ee65e"><td class="memItemLeft" align="right" valign="top">QImage </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_point_mapper.html#a48feb94a44632dafc78405e7a42ee65e">toImage</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap, const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > *series, int from, int to, const QPen &, bool antialiased, uint numThreads) const</td></tr>
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<tr class="memdesc:a48feb94a44632dafc78405e7a42ee65e"><td class="mdescLeft"> </td><td class="mdescRight">Translate a series into a QImage. <a href="class_qwt_point_mapper.html#a48feb94a44632dafc78405e7a42ee65e">More...</a><br /></td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>A helper class for translating a series of points. </p>
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<p><a class="el" href="class_qwt_point_mapper.html" title="A helper class for translating a series of points.">QwtPointMapper</a> is a collection of methods and optimizations for translating a series of points into paint device coordinates. It is used by <a class="el" href="class_qwt_plot_curve.html" title="A plot item, that represents a series of points.">QwtPlotCurve</a> but might also be useful for similar plot items displaying a <a class="el" href="class_qwt_series_data.html">QwtSeriesData<QPointF></a>. </p>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8h_source.html#l00032">32</a> of file <a class="el" href="qwt__point__mapper_8h_source.html">qwt_point_mapper.h</a>.</p>
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</div><h2 class="groupheader">Member Typedef Documentation</h2>
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<a id="aba6206c8750314c543f0e3b771ae1641"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aba6206c8750314c543f0e3b771ae1641">◆ </a></span>TransformationFlags</h2>
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<td class="memname">typedef QFlags<<a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a> > <a class="el" href="class_qwt_point_mapper.html#aba6206c8750314c543f0e3b771ae1641">QwtPointMapper::TransformationFlags</a></td>
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</div><div class="memdoc">
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<p>An ORed combination of <a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a> values. </p>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8h_source.html#l00071">71</a> of file <a class="el" href="qwt__point__mapper_8h_source.html">qwt_point_mapper.h</a>.</p>
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<h2 class="groupheader">Member Enumeration Documentation</h2>
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<a id="aafc07ceadb3f311057037ca8680e1c23"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aafc07ceadb3f311057037ca8680e1c23">◆ </a></span>TransformationFlag</h2>
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<td class="memname">enum <a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">QwtPointMapper::TransformationFlag</a></td>
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<p>Flags affecting the transformation process. </p>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_point_mapper.html#a6e03e14718d3d66a0f6a02fec7fcaeed">setFlag()</a>, <a class="el" href="class_qwt_point_mapper.html#ab556bd339cca487f25e2d894c51abe85">setFlags()</a> </dd></dl>
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<table class="fieldtable">
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="aafc07ceadb3f311057037ca8680e1c23a0e367a1519b0005cad8bb324854cc8e3"></a>RoundPoints </td><td class="fielddoc"><p>Round points to integer values. </p>
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</td></tr>
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<tr><td class="fieldname"><a id="aafc07ceadb3f311057037ca8680e1c23a288f41a8e4d53c895f7bffaaa9b5d9e4"></a>WeedOutPoints </td><td class="fielddoc"><p>Try to remove points, that are translated to the same position. </p>
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</td></tr>
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<tr><td class="fieldname"><a id="aafc07ceadb3f311057037ca8680e1c23a7708d7fa581149d1a443f0eaf7066b06"></a>WeedOutIntermediatePoints </td><td class="fielddoc"><p>An even more aggressive weeding algorithm, that can be used in <a class="el" href="class_qwt_point_mapper.html#ab1dde54ddb1c522e17e28ff47fbaa82a" title="Translate a series of points into a QPolygon.">toPolygon()</a>.</p>
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<p>A consecutive chunk of points being mapped to the same x coordinate is reduced to 4 points:</p>
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<ul>
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<li>first point</li>
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<li>point with the minimum y coordinate</li>
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<li>point with the maximum y coordinate</li>
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<li>last point</li>
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</ul>
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<p>In the worst case ( first and last points are never one of the extremes ) the number of points will be 4 times the width.</p>
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<p>As the algorithm is fast it can be used inside of a polyline render cycle. </p>
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</td></tr>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8h_source.html#l00039">39</a> of file <a class="el" href="qwt__point__mapper_8h_source.html">qwt_point_mapper.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a id="a22846085780856a6ca36776d387d5b21"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a22846085780856a6ca36776d387d5b21">◆ </a></span>boundingRect()</h2>
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<td class="memname">QRectF QwtPointMapper::boundingRect </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Bounding rectangle </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_point_mapper.html#a03910571df91575456e98134f6543650">setBoundingRect()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00621">621</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a3bed903e8aeaebd8153c6c75121bfb01">◆ </a></span>flags()</h2>
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<td class="memname"><a class="el" href="class_qwt_point_mapper.html#aba6206c8750314c543f0e3b771ae1641">QwtPointMapper::TransformationFlags</a> QwtPointMapper::flags </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Flags affecting the transformation process </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_point_mapper.html#ab556bd339cca487f25e2d894c51abe85">setFlags()</a>, <a class="el" href="class_qwt_point_mapper.html#a6e03e14718d3d66a0f6a02fec7fcaeed">setFlag()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00573">573</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a03910571df91575456e98134f6543650">◆ </a></span>setBoundingRect()</h2>
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<td class="memname">void QwtPointMapper::setBoundingRect </td>
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<td>(</td>
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<td class="paramtype">const QRectF & </td>
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<td class="paramname"><em>rect</em></td><td>)</td>
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<p>Set a bounding rectangle for the point mapping algorithm</p>
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<p>A valid bounding rectangle can be used for optimizations</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">rect</td><td>Bounding rectangle </td></tr>
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</dd>
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</dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_point_mapper.html#a22846085780856a6ca36776d387d5b21">boundingRect()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00612">612</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<a id="a6e03e14718d3d66a0f6a02fec7fcaeed"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a6e03e14718d3d66a0f6a02fec7fcaeed">◆ </a></span>setFlag()</h2>
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<td class="memname">void QwtPointMapper::setFlag </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a> </td>
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<td class="paramname"><em>flag</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">bool </td>
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<td class="paramname"><em>on</em> = <code>true</code> </td>
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<td></td>
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<td>)</td>
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<p>Modify a flag affecting the transformation process</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">flag</td><td>Flag type </td></tr>
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<tr><td class="paramname">on</td><td>Value</td></tr>
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</dd>
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</dl>
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<dl class="section see"><dt>See also</dt><dd>flag(), <a class="el" href="class_qwt_point_mapper.html#ab556bd339cca487f25e2d894c51abe85">setFlags()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00586">586</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<a id="ab556bd339cca487f25e2d894c51abe85"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab556bd339cca487f25e2d894c51abe85">◆ </a></span>setFlags()</h2>
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<td class="memname">void QwtPointMapper::setFlags </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_point_mapper.html#aba6206c8750314c543f0e3b771ae1641">TransformationFlags</a> </td>
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<td class="paramname"><em>flags</em></td><td>)</td>
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<td></td>
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<p>Set the flags affecting the transformation process</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">flags</td><td>Flags </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_point_mapper.html#a3bed903e8aeaebd8153c6c75121bfb01">flags()</a>, <a class="el" href="class_qwt_point_mapper.html#a6e03e14718d3d66a0f6a02fec7fcaeed">setFlag()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00564">564</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<a id="a5083f71473fd88e23363a587d84779f3"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a5083f71473fd88e23363a587d84779f3">◆ </a></span>testFlag()</h2>
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<td class="memname">bool QwtPointMapper::testFlag </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_point_mapper.html#aafc07ceadb3f311057037ca8680e1c23">TransformationFlag</a> </td>
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<td class="paramname"><em>flag</em></td><td>)</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True, when the flag is set </dd></dl>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">flag</td><td>Flag type </td></tr>
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</dd>
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</dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_point_mapper.html#a6e03e14718d3d66a0f6a02fec7fcaeed">setFlag()</a>, <a class="el" href="class_qwt_point_mapper.html#ab556bd339cca487f25e2d894c51abe85">setFlags()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00599">599</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a48feb94a44632dafc78405e7a42ee65e">◆ </a></span>toImage()</h2>
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<td class="memname">QImage QwtPointMapper::toImage </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
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<td class="paramtype">const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > * </td>
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<p>Translate a series into a QImage. </p>
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|
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<tr><td class="paramname">xMap</td><td>x map </td></tr>
|
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<tr><td class="paramname">yMap</td><td>y map </td></tr>
|
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<tr><td class="paramname">series</td><td>Series of points to be mapped </td></tr>
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<tr><td class="paramname">from</td><td>Index of the first point to be painted </td></tr>
|
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<tr><td class="paramname">to</td><td>Index of the last point to be painted </td></tr>
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<tr><td class="paramname">pen</td><td>Pen used for drawing a point of the image, where a point is mapped to </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Image displaying the series </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00883">883</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad580fc22b1bfcc353e711712cad15ae0">◆ </a></span>toPoints()</h2>
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<p>Translate a series of points into a QPolygon. </p>
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<li>WeedOutPoints & <a class="el" href="class_qwt_point_mapper.html#a22846085780856a6ca36776d387d5b21">boundingRect()</a>.isValid() All points that are mapped to the same position will be one point. Points outside of the bounding rectangle are ignored.</li>
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<li>!WeedOutPoints & <a class="el" href="class_qwt_point_mapper.html#a22846085780856a6ca36776d387d5b21">boundingRect()</a>.isValid() Points outside of the bounding rectangle are ignored.</li>
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|
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|
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00833">833</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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<td class="paramtype">const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > * </td>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>from</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>to</em> </td>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td> const</td>
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</div><div class="memdoc">
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<p>Translate a series into a QPolygonF. </p>
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<ul>
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<li>WeedOutPoints & RoundPoints & <a class="el" href="class_qwt_point_mapper.html#a22846085780856a6ca36776d387d5b21">boundingRect()</a>.isValid() All points that are mapped to the same position will be one point. Points outside of the bounding rectangle are ignored.</li>
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<li>WeedOutPoints & RoundPoints & !boundingRect().isValid() All consecutive points that are mapped to the same position will one point</li>
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<li>WeedOutPoints & !RoundPoints All consecutive points that are mapped to the same position will one point</li>
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<li>!WeedOutPoints & <a class="el" href="class_qwt_point_mapper.html#a22846085780856a6ca36776d387d5b21">boundingRect()</a>.isValid() Points outside of the bounding rectangle are ignored.</li>
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</ul>
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<p>When RoundPoints is set all points are rounded to integers but returned as PolygonF - what only makes sense when the further processing of the values need a QPolygonF.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">xMap</td><td>x map </td></tr>
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<tr><td class="paramname">yMap</td><td>y map </td></tr>
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<tr><td class="paramname">series</td><td>Series of points to be mapped </td></tr>
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<tr><td class="paramname">from</td><td>Index of the first point to be painted </td></tr>
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<tr><td class="paramname">to</td><td>Index of the last point to be painted</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Translated polygon </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00759">759</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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</div>
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</div>
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<a id="ab1dde54ddb1c522e17e28ff47fbaa82a"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab1dde54ddb1c522e17e28ff47fbaa82a">◆ </a></span>toPolygon()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<td class="memname">QPolygon QwtPointMapper::toPolygon </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
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<td class="paramname"><em>xMap</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
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<td class="paramname"><em>yMap</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > * </td>
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<td class="paramname"><em>series</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>from</em>, </td>
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</tr>
|
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>to</em> </td>
|
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Translate a series of points into a QPolygon. </p>
|
|
<p>When the WeedOutPoints flag is enabled consecutive points, that are mapped to the same position will be one point.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">xMap</td><td>x map </td></tr>
|
|
<tr><td class="paramname">yMap</td><td>y map </td></tr>
|
|
<tr><td class="paramname">series</td><td>Series of points to be mapped </td></tr>
|
|
<tr><td class="paramname">from</td><td>Index of the first point to be painted </td></tr>
|
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<tr><td class="paramname">to</td><td>Index of the last point to be painted</td></tr>
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</table>
|
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</dd>
|
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Translated polygon </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00702">702</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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</div>
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</div>
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<a id="a394341ccba09dd293dddc7bb4f599891"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a394341ccba09dd293dddc7bb4f599891">◆ </a></span>toPolygonF()</h2>
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<td class="memname">QPolygonF QwtPointMapper::toPolygonF </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
|
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<td class="paramname"><em>xMap</em>, </td>
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
|
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<td class="paramname"><em>yMap</em>, </td>
|
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</tr>
|
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<tr>
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<td class="paramkey"></td>
|
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<td></td>
|
|
<td class="paramtype">const <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< QPointF > * </td>
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<td class="paramname"><em>series</em>, </td>
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
|
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<td></td>
|
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<td class="paramtype">int </td>
|
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<td class="paramname"><em>from</em>, </td>
|
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</tr>
|
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<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
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<td class="paramtype">int </td>
|
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<td class="paramname"><em>to</em> </td>
|
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</tr>
|
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<tr>
|
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<td></td>
|
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<td>)</td>
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<td></td><td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Translate a series of points into a QPolygonF. </p>
|
|
<p>When the WeedOutPoints flag is enabled consecutive points, that are mapped to the same position will be one point.</p>
|
|
<p>When RoundPoints is set all points are rounded to integers but returned as PolygonF - what only makes sense when the further processing of the values need a QPolygonF.</p>
|
|
<p>When RoundPoints & WeedOutIntermediatePoints is enabled an even more aggressive weeding algorithm is enabled.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">xMap</td><td>x map </td></tr>
|
|
<tr><td class="paramname">yMap</td><td>y map </td></tr>
|
|
<tr><td class="paramname">series</td><td>Series of points to be mapped </td></tr>
|
|
<tr><td class="paramname">from</td><td>Index of the first point to be painted </td></tr>
|
|
<tr><td class="paramname">to</td><td>Index of the last point to be painted</td></tr>
|
|
</table>
|
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</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>Translated polygon </dd></dl>
|
|
|
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<p class="definition">Definition at line <a class="el" href="qwt__point__mapper_8cpp_source.html#l00647">647</a> of file <a class="el" href="qwt__point__mapper_8cpp_source.html">qwt_point_mapper.cpp</a>.</p>
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