qwt-cmake/doc/html/class_qwt_scale_map.html
2018-08-02 11:01:31 -04:00

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<a href="#pub-methods">Public Member Functions</a> &#124;
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<p>A scale map.
<a href="class_qwt_scale_map.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="qwt__scale__map_8h_source.html">qwt_scale_map.h</a>&gt;</code></p>
<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:a9576a2e19c0be1d036fee344ab68f542"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a9576a2e19c0be1d036fee344ab68f542">QwtScaleMap</a> ()</td></tr>
<tr class="memdesc:a9576a2e19c0be1d036fee344ab68f542"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="#a9576a2e19c0be1d036fee344ab68f542">More...</a><br /></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a579bc766106d98edd7153e62ea77a19b">QwtScaleMap</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;)</td></tr>
<tr class="memdesc:a579bc766106d98edd7153e62ea77a19b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <br /></td></tr>
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<tr class="memitem:aecafd09423984a5e0ffa935d1b45110c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#aecafd09423984a5e0ffa935d1b45110c">~QwtScaleMap</a> ()</td></tr>
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<tr class="memitem:a3f55ef14f8874e626380fcf92b096791"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3f55ef14f8874e626380fcf92b096791"></a>
<a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a3f55ef14f8874e626380fcf92b096791">operator=</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;)</td></tr>
<tr class="memdesc:a3f55ef14f8874e626380fcf92b096791"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assignment operator. <br /></td></tr>
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<tr class="memitem:ad8e971dd4be07801f0adc99549153718"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#ad8e971dd4be07801f0adc99549153718">setTransformation</a> (<a class="el" href="class_qwt_transform.html">QwtTransform</a> *)</td></tr>
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<tr class="memitem:adba2c419bba77e8e099febfaa0f543e4"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="adba2c419bba77e8e099febfaa0f543e4"></a>
const <a class="el" href="class_qwt_transform.html">QwtTransform</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#adba2c419bba77e8e099febfaa0f543e4">transformation</a> () const </td></tr>
<tr class="memdesc:adba2c419bba77e8e099febfaa0f543e4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the transformation. <br /></td></tr>
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<tr class="memitem:a994240e446986112f196a65657dc9755"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a994240e446986112f196a65657dc9755">setPaintInterval</a> (double <a class="el" href="class_qwt_scale_map.html#ac1ca2f9b4643d27fde693cc98bca0cd7">p1</a>, double <a class="el" href="class_qwt_scale_map.html#acf404215292b10bd46b1089d2452b8e9">p2</a>)</td></tr>
<tr class="memdesc:a994240e446986112f196a65657dc9755"><td class="mdescLeft">&#160;</td><td class="mdescRight">Specify the borders of the paint device interval. <a href="#a994240e446986112f196a65657dc9755">More...</a><br /></td></tr>
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<tr class="memitem:aaa33bc8e1aed7aa17d345053194e7094"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#aaa33bc8e1aed7aa17d345053194e7094">setScaleInterval</a> (double <a class="el" href="class_qwt_scale_map.html#a38b6a7040cd15a427f7631afa20cbad8">s1</a>, double <a class="el" href="class_qwt_scale_map.html#a644fe199eecf30fcd1803be554cd21f7">s2</a>)</td></tr>
<tr class="memdesc:aaa33bc8e1aed7aa17d345053194e7094"><td class="mdescLeft">&#160;</td><td class="mdescRight">Specify the borders of the scale interval. <a href="#aaa33bc8e1aed7aa17d345053194e7094">More...</a><br /></td></tr>
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<tr class="memitem:ab77cbd649a65b080c3ff21d7abce7f73"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#ab77cbd649a65b080c3ff21d7abce7f73">transform</a> (double s) const </td></tr>
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<tr class="memitem:a9f973f23b61ed18dd7598255078bd837"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a9f973f23b61ed18dd7598255078bd837">invTransform</a> (double p) const </td></tr>
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<tr class="memitem:ac1ca2f9b4643d27fde693cc98bca0cd7"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#ac1ca2f9b4643d27fde693cc98bca0cd7">p1</a> () const </td></tr>
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<tr class="memitem:acf404215292b10bd46b1089d2452b8e9"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#acf404215292b10bd46b1089d2452b8e9">p2</a> () const </td></tr>
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<tr class="memitem:a38b6a7040cd15a427f7631afa20cbad8"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a38b6a7040cd15a427f7631afa20cbad8">s1</a> () const </td></tr>
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<tr class="memitem:a644fe199eecf30fcd1803be554cd21f7"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a644fe199eecf30fcd1803be554cd21f7">s2</a> () const </td></tr>
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<tr class="memitem:af364d4fa10db6f5dbc93d6ce763e603f"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#af364d4fa10db6f5dbc93d6ce763e603f">pDist</a> () const </td></tr>
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<tr class="memitem:adf621246cfa7313280a35a44063972f3"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#adf621246cfa7313280a35a44063972f3">sDist</a> () const </td></tr>
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<tr class="memitem:aee1376468f91fa74715a0cad6cf1f6dc"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#aee1376468f91fa74715a0cad6cf1f6dc">isInverting</a> () const </td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:af99eeda829142128f97e0b6c4fbf9e1f"><td class="memItemLeft" align="right" valign="top">static QRectF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#af99eeda829142128f97e0b6c4fbf9e1f">transform</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const QRectF &amp;)</td></tr>
<tr class="separator:af99eeda829142128f97e0b6c4fbf9e1f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8fe572f224a14672684fd929c55568f8"><td class="memItemLeft" align="right" valign="top">static QRectF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a8fe572f224a14672684fd929c55568f8">invTransform</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const QRectF &amp;)</td></tr>
<tr class="separator:a8fe572f224a14672684fd929c55568f8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6be600afa5bd75f5ff52b1f102b123b0"><td class="memItemLeft" align="right" valign="top">static QPointF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a6be600afa5bd75f5ff52b1f102b123b0">transform</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const QPointF &amp;)</td></tr>
<tr class="separator:a6be600afa5bd75f5ff52b1f102b123b0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a08dc05a17283c531e2c1d79fd52bc56a"><td class="memItemLeft" align="right" valign="top">static QPointF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a08dc05a17283c531e2c1d79fd52bc56a">invTransform</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const QPointF &amp;)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A scale map. </p>
<p><a class="el" href="class_qwt_scale_map.html" title="A scale map. ">QwtScaleMap</a> offers transformations from the coordinate system of a scale into the linear coordinate system of a paint device and vice versa. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a9576a2e19c0be1d036fee344ab68f542"></a>
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<td class="memname">QwtScaleMap::QwtScaleMap </td>
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<p>Constructor. </p>
<p>The scale and paint device intervals are both set to [0,1]. </p>
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<td class="memname">QwtScaleMap::~QwtScaleMap </td>
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<p>Destructor </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">double QwtScaleMap::invTransform </td>
<td>(</td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>p</em></td><td>)</td>
<td> const</td>
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<p>Transform an paint device value into a value in the interval of the scale.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>Value relative to the coordinates of the paint device </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Transformed value</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_scale_map.html#ab77cbd649a65b080c3ff21d7abce7f73">transform()</a> </dd></dl>
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<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>xMap</em>, </td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>yMap</em>, </td>
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<td class="paramtype">const QRectF &amp;&#160;</td>
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<p>Transform a rectangle from paint to scale coordinates</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">rect</td><td>Rectangle in paint coordinates </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Rectangle in scale coordinates </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_scale_map.html#ab77cbd649a65b080c3ff21d7abce7f73">transform()</a> </dd></dl>
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<td class="memname">QPointF QwtScaleMap::invTransform </td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>xMap</em>, </td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
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<td class="paramkey"></td>
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<td class="paramtype">const QPointF &amp;&#160;</td>
<td class="paramname"><em>pos</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<p>Transform a rectangle from paint to scale coordinates</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">pos</td><td>Position in paint coordinates </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Position in scale coordinates </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_scale_map.html#ab77cbd649a65b080c3ff21d7abce7f73">transform()</a> </dd></dl>
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<td class="memname">bool QwtScaleMap::isInverting </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True, when ( <a class="el" href="class_qwt_scale_map.html#ac1ca2f9b4643d27fde693cc98bca0cd7">p1()</a> &lt; <a class="el" href="class_qwt_scale_map.html#acf404215292b10bd46b1089d2452b8e9">p2()</a> ) != ( <a class="el" href="class_qwt_scale_map.html#a38b6a7040cd15a427f7631afa20cbad8">s1()</a> &lt; <a class="el" href="class_qwt_scale_map.html#a644fe199eecf30fcd1803be554cd21f7">s2()</a> ) </dd></dl>
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<td class="memname">double QwtScaleMap::p1 </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>First border of the paint interval </dd></dl>
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<td class="memname">double QwtScaleMap::p2 </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
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<dl class="section return"><dt>Returns</dt><dd>Second border of the paint interval </dd></dl>
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<td class="memname">double QwtScaleMap::pDist </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<dl class="section return"><dt>Returns</dt><dd>qwtAbs(<a class="el" href="class_qwt_scale_map.html#acf404215292b10bd46b1089d2452b8e9">p2()</a> - <a class="el" href="class_qwt_scale_map.html#ac1ca2f9b4643d27fde693cc98bca0cd7">p1()</a>) </dd></dl>
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<td class="memname">double QwtScaleMap::s1 </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<dl class="section return"><dt>Returns</dt><dd>First border of the scale interval </dd></dl>
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<td class="memname">double QwtScaleMap::s2 </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<dl class="section return"><dt>Returns</dt><dd>Second border of the scale interval </dd></dl>
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<td class="memname">double QwtScaleMap::sDist </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<td class="mlabels-right">
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<dl class="section return"><dt>Returns</dt><dd>qwtAbs(<a class="el" href="class_qwt_scale_map.html#a644fe199eecf30fcd1803be554cd21f7">s2()</a> - <a class="el" href="class_qwt_scale_map.html#a38b6a7040cd15a427f7631afa20cbad8">s1()</a>) </dd></dl>
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<td class="memname">void QwtScaleMap::setPaintInterval </td>
<td>(</td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>p1</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>p2</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Specify the borders of the paint device interval. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p1</td><td>first border </td></tr>
<tr><td class="paramname">p2</td><td>second border </td></tr>
</table>
</dd>
</dl>
</div>
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<td class="memname">void QwtScaleMap::setScaleInterval </td>
<td>(</td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>s1</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>s2</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Specify the borders of the scale interval. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">s1</td><td>first border </td></tr>
<tr><td class="paramname">s2</td><td>second border </td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>scales might be aligned to transformation depending boundaries </dd></dl>
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<td class="memname">void QwtScaleMap::setTransformation </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_qwt_transform.html">QwtTransform</a> *&#160;</td>
<td class="paramname"><em>transform</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize the map with a transformation </p>
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<td class="memname">double QwtScaleMap::transform </td>
<td>(</td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>s</em></td><td>)</td>
<td> const</td>
</tr>
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<p>Transform a point related to the scale interval into an point related to the interval of the paint device</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">s</td><td>Value relative to the coordinates of the scale </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Transformed value</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_scale_map.html#a9f973f23b61ed18dd7598255078bd837">invTransform()</a> </dd></dl>
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<td class="memname">QRectF QwtScaleMap::transform </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>xMap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>yMap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const QRectF &amp;&#160;</td>
<td class="paramname"><em>rect</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Transform a rectangle from scale to paint coordinates</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">rect</td><td>Rectangle in scale coordinates </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Rectangle in paint coordinates</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_scale_map.html#a9f973f23b61ed18dd7598255078bd837">invTransform()</a> </dd></dl>
</div>
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<td class="memname">QPointF QwtScaleMap::transform </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>xMap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
<td class="paramname"><em>yMap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const QPointF &amp;&#160;</td>
<td class="paramname"><em>pos</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
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</table>
</div><div class="memdoc">
<p>Transform a point from scale to paint coordinates</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">pos</td><td>Position in scale coordinates </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Position in paint coordinates</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_scale_map.html#a9f973f23b61ed18dd7598255078bd837">invTransform()</a> </dd></dl>
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