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<title>Qwt User's Guide: qwt_interval_data.cpp Source File</title>
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<h1>qwt_interval_data.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
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<a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span>
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<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
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<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
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<a name="l00005"></a>00005 <span class="comment"> * </span>
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<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
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<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
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<a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span>
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<a name="l00009"></a>00009
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<a name="l00010"></a>00010 <span class="preprocessor">#include "qwt_math.h"</span>
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<a name="l00011"></a>00011 <span class="preprocessor">#include "qwt_interval_data.h"</span>
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<a name="l00012"></a>00012
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<a name="l00013"></a><a class="code" href="class_qwt_interval_data.html#f9ecf7ff365f3a903a16ee9977f105ff">00013</a> <a class="code" href="class_qwt_interval_data.html#f9ecf7ff365f3a903a16ee9977f105ff">QwtIntervalData::QwtIntervalData</a>()
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<a name="l00014"></a>00014 {
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<a name="l00015"></a>00015 }
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<a name="l00016"></a>00016
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<a name="l00017"></a><a class="code" href="class_qwt_interval_data.html#b3faf0d3335eebe14f8285a791ea0db3">00017</a> <a class="code" href="class_qwt_interval_data.html#f9ecf7ff365f3a903a16ee9977f105ff">QwtIntervalData::QwtIntervalData</a>(
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<a name="l00018"></a>00018 <span class="keyword">const</span> QwtArray<QwtDoubleInterval> &intervals,
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<a name="l00019"></a>00019 <span class="keyword">const</span> QwtArray<double> &values):
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<a name="l00020"></a>00020 d_intervals(intervals),
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<a name="l00021"></a>00021 d_values(values)
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<a name="l00022"></a>00022 {
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<a name="l00023"></a>00023 }
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<a name="l00024"></a>00024
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<a name="l00025"></a><a class="code" href="class_qwt_interval_data.html#5ccd2d3de2c5499d56ee3569c3b79985">00025</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_interval_data.html#5ccd2d3de2c5499d56ee3569c3b79985">QwtIntervalData::setData</a>(
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<a name="l00026"></a>00026 <span class="keyword">const</span> QwtArray<QwtDoubleInterval> &intervals,
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<a name="l00027"></a>00027 <span class="keyword">const</span> QwtArray<double> &values)
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<a name="l00028"></a>00028 {
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<a name="l00029"></a>00029 d_intervals = intervals;
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<a name="l00030"></a>00030 d_values = values;
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<a name="l00031"></a>00031 }
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<a name="l00032"></a>00032
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<a name="l00033"></a><a class="code" href="class_qwt_interval_data.html#8fde3274ee46d75d896dec1b268b371e">00033</a> <a class="code" href="qwt__double__rect_8h.html#0c0dc4d33592fac4ad94734d8e9c4152">QwtDoubleRect</a> <a class="code" href="class_qwt_interval_data.html#8fde3274ee46d75d896dec1b268b371e">QwtIntervalData::boundingRect</a>()<span class="keyword"> const</span>
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<a name="l00034"></a>00034 <span class="keyword"></span>{
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<a name="l00035"></a>00035 <span class="keywordtype">double</span> minX, maxX, minY, maxY;
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<a name="l00036"></a>00036 minX = maxX = minY = maxY = 0.0;
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<a name="l00037"></a>00037
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<a name="l00038"></a>00038 <span class="keywordtype">bool</span> isValid = <span class="keyword">false</span>;
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<a name="l00039"></a>00039
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<a name="l00040"></a>00040 <span class="keyword">const</span> size_t sz = <a class="code" href="class_qwt_interval_data.html#a8a35cbcae0afe3103ffae9911874dc2">size</a>();
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<a name="l00041"></a>00041 <span class="keywordflow">for</span> ( size_t i = 0; i < sz; i++ )
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<a name="l00042"></a>00042 {
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<a name="l00043"></a>00043 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> intv = <a class="code" href="class_qwt_interval_data.html#be226054ecdc039cea8eec94079934e0">interval</a>(i);
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<a name="l00044"></a>00044 <span class="keywordflow">if</span> ( !intv.isValid() )
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<a name="l00045"></a>00045 <span class="keywordflow">continue</span>;
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<a name="l00046"></a>00046
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<a name="l00047"></a>00047 <span class="keyword">const</span> <span class="keywordtype">double</span> v = <a class="code" href="class_qwt_interval_data.html#c667879039bb14e0e9387d35852ffc6c">value</a>(i);
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<a name="l00048"></a>00048
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<a name="l00049"></a>00049 <span class="keywordflow">if</span> ( !isValid )
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<a name="l00050"></a>00050 {
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<a name="l00051"></a>00051 minX = intv.minValue();
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<a name="l00052"></a>00052 maxX = intv.maxValue();
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<a name="l00053"></a>00053 minY = maxY = v;
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<a name="l00054"></a>00054
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<a name="l00055"></a>00055 isValid = <span class="keyword">true</span>;
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<a name="l00056"></a>00056 }
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<a name="l00057"></a>00057 <span class="keywordflow">else</span>
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<a name="l00058"></a>00058 {
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<a name="l00059"></a>00059 <span class="keywordflow">if</span> ( intv.minValue() < minX )
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<a name="l00060"></a>00060 minX = intv.minValue();
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<a name="l00061"></a>00061 <span class="keywordflow">if</span> ( intv.maxValue() > maxX )
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<a name="l00062"></a>00062 maxX = intv.maxValue();
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064 <span class="keywordflow">if</span> ( v < minY )
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<a name="l00065"></a>00065 minY = v;
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<a name="l00066"></a>00066 <span class="keywordflow">if</span> ( v > maxY )
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<a name="l00067"></a>00067 maxY = v;
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<a name="l00068"></a>00068 }
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<a name="l00069"></a>00069 }
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<a name="l00070"></a>00070 <span class="keywordflow">if</span> ( !isValid )
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<a name="l00071"></a>00071 <span class="keywordflow">return</span> <a class="code" href="qwt__double__rect_8h.html#0c0dc4d33592fac4ad94734d8e9c4152">QwtDoubleRect</a>(1.0, 1.0, -2.0, -2.0); <span class="comment">// invalid</span>
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<a name="l00072"></a>00072
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<a name="l00073"></a>00073 <span class="keywordflow">return</span> <a class="code" href="qwt__double__rect_8h.html#0c0dc4d33592fac4ad94734d8e9c4152">QwtDoubleRect</a>(minX, minY, maxX - minX, maxY - minY);
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<a name="l00074"></a>00074 }
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu May 1 15:44:08 2008 for Qwt User's Guide by
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