<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>Qwt User's Guide: QwtScaleMap 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 1.5.8 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<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 class="tabs">
<ul>
<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="hierarchy.html"><span>Class Hierarchy</span></a></li>
<li><a href="functions.html"><span>Class Members</span></a></li>
</ul>
</div>
</div>
<div class="contents">
<h1>QwtScaleMap Class Reference</h1><!-- doxytag: class="QwtScaleMap" -->A scale map.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="qwt__scale__map_8h-source.html">qwt_scale_map.h</a>></code>
<p>
<p>
<a href="class_qwt_scale_map-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#9576a2e19c0be1d036fee344ab68f542">QwtScaleMap</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#579bc766106d98edd7153e62ea77a19b">QwtScaleMap</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#ecafd09423984a5e0ffa935d1b45110c">~QwtScaleMap</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#3f55ef14f8874e626380fcf92b096791">operator=</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#37edc7ef45ce0958927f17ca96f91dde">setTransformation</a> (<a class="el" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> *)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#67bd65d38340ccf2c7e7623cf9bbc0e5">transformation</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a9a63a0b2e4ff81b1df23d9f968cd5b8">setPaintInterval</a> (int p1, int p2)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#1679ba72903986ff546c4c197e4680c0">setPaintXInterval</a> (double p1, double p2)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#aa33bc8e1aed7aa17d345053194e7094">setScaleInterval</a> (double s1, double s2)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">transform</a> (double x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#0df4d78da09fa88d1063554542c7fb03">invTransform</a> (double i) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#053cad00dd463f45c7e1591c9f2d8296">xTransform</a> (double x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#c1ca2f9b4643d27fde693cc98bca0cd7">p1</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#cf404215292b10bd46b1089d2452b8e9">p2</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#38b6a7040cd15a427f7631afa20cbad8">s1</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#644fe199eecf30fcd1803be554cd21f7">s2</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#f364d4fa10db6f5dbc93d6ce763e603f">pDist</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#df621246cfa7313280a35a44063972f3">sDist</a> () const </td></tr>
<tr><td colspan="2"><br><h2>Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dacf5fdb36940d39929993083f6cb64b"></a><!-- doxytag: member="QwtScaleMap::LogMin" ref="dacf5fdb36940d39929993083f6cb64b" args="" -->
QT_STATIC_CONST double </td><td class="memItemRight" valign="bottom"><b>LogMin</b> = 1.0e-150</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0f06d4698bcb8af2200e37609b4b88c4"></a><!-- doxytag: member="QwtScaleMap::LogMax" ref="0f06d4698bcb8af2200e37609b4b88c4" args="" -->
QT_STATIC_CONST double </td><td class="memItemRight" valign="bottom"><b>LogMax</b> = 1.0e150</td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A scale map.
<p>
<a class="el" href="class_qwt_scale_map.html" title="A scale map.">QwtScaleMap</a> offers transformations from a scale into a paint interval and vice versa. <hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="9576a2e19c0be1d036fee344ab68f542"></a><!-- doxytag: member="QwtScaleMap::QwtScaleMap" ref="9576a2e19c0be1d036fee344ab68f542" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">QwtScaleMap::QwtScaleMap </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Constructor.
<p>
The scale and paint device intervals are both set to [0,1].
</div>
</div><p>
<a class="anchor" name="579bc766106d98edd7153e62ea77a19b"></a><!-- doxytag: member="QwtScaleMap::QwtScaleMap" ref="579bc766106d98edd7153e62ea77a19b" args="(const QwtScaleMap &)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">QwtScaleMap::QwtScaleMap </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
<td class="paramname"> <em>other</em> </td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Copy constructor.
<p>
</div>
</div><p>
<a class="anchor" name="ecafd09423984a5e0ffa935d1b45110c"></a><!-- doxytag: member="QwtScaleMap::~QwtScaleMap" ref="ecafd09423984a5e0ffa935d1b45110c" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">QwtScaleMap::~QwtScaleMap </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Destructor
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="0df4d78da09fa88d1063554542c7fb03"></a><!-- doxytag: member="QwtScaleMap::invTransform" ref="0df4d78da09fa88d1063554542c7fb03" args="(double i) const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::invTransform </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>p</em> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Transform an paint device value into a value in the interval of the scale.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>p</em> </td><td>Value relative to the coordinates of the paint device </td></tr>
</table>
</dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">transform()</a> </dd></dl>
</div>
</div><p>
<a class="anchor" name="3f55ef14f8874e626380fcf92b096791"></a><!-- doxytag: member="QwtScaleMap::operator=" ref="3f55ef14f8874e626380fcf92b096791" args="(const QwtScaleMap &)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & QwtScaleMap::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td>
<td class="paramname"> <em>other</em> </td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Assignment operator.
<p>
</div>
</div><p>
<a class="anchor" name="c1ca2f9b4643d27fde693cc98bca0cd7"></a><!-- doxytag: member="QwtScaleMap::p1" ref="c1ca2f9b4643d27fde693cc98bca0cd7" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::p1 </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>First border of the paint interval </dd></dl>
</div>
</div><p>
<a class="anchor" name="cf404215292b10bd46b1089d2452b8e9"></a><!-- doxytag: member="QwtScaleMap::p2" ref="cf404215292b10bd46b1089d2452b8e9" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::p2 </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>Second border of the paint interval </dd></dl>
</div>
</div><p>
<a class="anchor" name="f364d4fa10db6f5dbc93d6ce763e603f"></a><!-- doxytag: member="QwtScaleMap::pDist" ref="f364d4fa10db6f5dbc93d6ce763e603f" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::pDist </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>qwtAbs(<a class="el" href="class_qwt_scale_map.html#cf404215292b10bd46b1089d2452b8e9">p2()</a> - <a class="el" href="class_qwt_scale_map.html#c1ca2f9b4643d27fde693cc98bca0cd7">p1()</a>) </dd></dl>
</div>
</div><p>
<a class="anchor" name="38b6a7040cd15a427f7631afa20cbad8"></a><!-- doxytag: member="QwtScaleMap::s1" ref="38b6a7040cd15a427f7631afa20cbad8" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::s1 </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>First border of the scale interval </dd></dl>
</div>
</div><p>
<a class="anchor" name="644fe199eecf30fcd1803be554cd21f7"></a><!-- doxytag: member="QwtScaleMap::s2" ref="644fe199eecf30fcd1803be554cd21f7" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::s2 </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>Second border of the scale interval </dd></dl>
</div>
</div><p>
<a class="anchor" name="df621246cfa7313280a35a44063972f3"></a><!-- doxytag: member="QwtScaleMap::sDist" ref="df621246cfa7313280a35a44063972f3" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::sDist </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>qwtAbs(<a class="el" href="class_qwt_scale_map.html#644fe199eecf30fcd1803be554cd21f7">s2()</a> - <a class="el" href="class_qwt_scale_map.html#38b6a7040cd15a427f7631afa20cbad8">s1()</a>) </dd></dl>
</div>
</div><p>
<a class="anchor" name="a9a63a0b2e4ff81b1df23d9f968cd5b8"></a><!-- doxytag: member="QwtScaleMap::setPaintInterval" ref="a9a63a0b2e4ff81b1df23d9f968cd5b8" args="(int p1, int p2)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtScaleMap::setPaintInterval </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>p1</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>p2</em></td><td> </td>
</tr>
<tr>
<td></td>
<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 compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>p1</em> </td><td>first border </td></tr>
<tr><td valign="top"></td><td valign="top"><em>p2</em> </td><td>second border </td></tr>
</table>
</dl>
</div>
</div><p>
<a class="anchor" name="1679ba72903986ff546c4c197e4680c0"></a><!-- doxytag: member="QwtScaleMap::setPaintXInterval" ref="1679ba72903986ff546c4c197e4680c0" args="(double p1, double p2)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtScaleMap::setPaintXInterval </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>p1</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"> <em>p2</em></td><td> </td>
</tr>
<tr>
<td></td>
<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 compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>p1</em> </td><td>first border </td></tr>
<tr><td valign="top"></td><td valign="top"><em>p2</em> </td><td>second border </td></tr>
</table>
</dl>
</div>
</div><p>
<a class="anchor" name="aa33bc8e1aed7aa17d345053194e7094"></a><!-- doxytag: member="QwtScaleMap::setScaleInterval" ref="aa33bc8e1aed7aa17d345053194e7094" args="(double s1, double s2)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtScaleMap::setScaleInterval </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>s1</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"> <em>s2</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Specify the borders of the scale interval.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>s1</em> </td><td>first border </td></tr>
<tr><td valign="top"></td><td valign="top"><em>s2</em> </td><td>second border </td></tr>
</table>
</dl>
<dl class="warning" compact><dt><b>Warning:</b></dt><dd>logarithmic scales might be aligned to [LogMin, LogMax] </dd></dl>
</div>
</div><p>
<a class="anchor" name="37edc7ef45ce0958927f17ca96f91dde"></a><!-- doxytag: member="QwtScaleMap::setTransformation" ref="37edc7ef45ce0958927f17ca96f91dde" args="(QwtScaleTransformation *)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtScaleMap::setTransformation </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> * </td>
<td class="paramname"> <em>transformation</em> </td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Initialize the map with a transformation
</div>
</div><p>
<a class="anchor" name="1ddda39f41e137560e625a8c66c1d2e1"></a><!-- doxytag: member="QwtScaleMap::transform" ref="1ddda39f41e137560e625a8c66c1d2e1" args="(double x) const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int QwtScaleMap::transform </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>s</em> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Transform a point related to the scale interval into an point related to the interval of the paint device and round it to an integer. (In Qt <= 3.x paint devices are integer based. )<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>s</em> </td><td>Value relative to the coordinates of the scale </td></tr>
</table>
</dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_scale_map.html#053cad00dd463f45c7e1591c9f2d8296">xTransform()</a> </dd></dl>
</div>
</div><p>
<a class="anchor" name="67bd65d38340ccf2c7e7623cf9bbc0e5"></a><!-- doxytag: member="QwtScaleMap::transformation" ref="67bd65d38340ccf2c7e7623cf9bbc0e5" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> * QwtScaleMap::transformation </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Get the transformation.
<p>
</div>
</div><p>
<a class="anchor" name="053cad00dd463f45c7e1591c9f2d8296"></a><!-- doxytag: member="QwtScaleMap::xTransform" ref="053cad00dd463f45c7e1591c9f2d8296" args="(double x) const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">double QwtScaleMap::xTransform </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>s</em> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Transform a point related to the scale interval into an point related to the interval of the paint device<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>s</em> </td><td>Value relative to the coordinates of the scale </td></tr>
</table>
</dl>
</div>
</div><p>
</div>
<hr size="1"><address style="text-align: right;"><small>Generated on Sun Mar 22 16:41:27 2009 for Qwt User's Guide by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.8 </small></address>
</body>
</html>
distrib
>
Mandriva
>
2010.0
>
i586
>
media
>
contrib-release
>
by-pkgid
>
81adc19a14c2cc1cbca5f0c63be116dc
>
files
>
282
