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<h1>qwt_dimap.h</h1><pre class="fragment"><div>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
00002 <span class="comment"> * Qwt Widget Library</span>
00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
00005 <span class="comment"> * </span>
00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
00008 <span class="comment"> *****************************************************************************/</span>
00009
00010 <span class="preprocessor">#ifndef QWT_DIMAP_H</span>
00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_DIMAP_H</span>
00012 <span class="preprocessor"></span>
00013 <span class="preprocessor">#include "qwt_global.h"</span>
00014 <span class="preprocessor">#include "<a class="code" href="qwt__math_8h.html">qwt_math.h</a>"</span>
00015
<a name="l00046"></a><a class="code" href="class_qwt_di_map.html">00046</a> <span class="keyword">class </span>QWT_EXPORT QwtDiMap
00047 {
00048 <span class="keyword">public</span>:
00049 QwtDiMap();
00050 QwtDiMap(<span class="keywordtype">int</span> i1, <span class="keywordtype">int</span> i2, <span class="keywordtype">double</span> d1, <span class="keywordtype">double</span> d2, <span class="keywordtype">bool</span> lg = FALSE);
00051 ~QwtDiMap();
00052
00053 <span class="keywordtype">bool</span> contains(<span class="keywordtype">double</span> x) <span class="keyword">const</span>;
00054 <span class="keywordtype">bool</span> contains(<span class="keywordtype">int</span> x) <span class="keyword">const</span>;
00055
00056 <span class="keywordtype">void</span> setIntRange(<span class="keywordtype">int</span> i1, <span class="keywordtype">int</span> i2);
00057 <span class="keywordtype">void</span> setDblRange(<span class="keywordtype">double</span> d1, <span class="keywordtype">double</span> d2, <span class="keywordtype">bool</span> lg = FALSE);
00058
00059 <span class="keywordtype">int</span> transform(<span class="keywordtype">double</span> x) <span class="keyword">const</span>;
00060 <span class="keywordtype">double</span> invTransform(<span class="keywordtype">int</span> i) <span class="keyword">const</span>;
00061
00062 <span class="keywordtype">int</span> limTransform(<span class="keywordtype">double</span> x) <span class="keyword">const</span>;
00063 <span class="keywordtype">double</span> xTransform(<span class="keywordtype">double</span> x) <span class="keyword">const</span>;
00064
00065 <span class="keyword">inline</span> <span class="keywordtype">double</span> d1() <span class="keyword">const</span>;
00066 <span class="keyword">inline</span> <span class="keywordtype">double</span> d2() <span class="keyword">const</span>;
00067 <span class="keyword">inline</span> <span class="keywordtype">int</span> i1() <span class="keyword">const</span>;
00068 <span class="keyword">inline</span> <span class="keywordtype">int</span> i2() <span class="keyword">const</span>;
00069 <span class="keyword">inline</span> <span class="keywordtype">bool</span> logarithmic() <span class="keyword">const</span>;
00070
00071 QT_STATIC_CONST <span class="keywordtype">double</span> LogMin;
00072 QT_STATIC_CONST <span class="keywordtype">double</span> LogMax;
00073
00074 <span class="keyword">private</span>:
00075 <span class="keywordtype">void</span> newFactor();
00076
00077 <span class="keywordtype">double</span> d_x1, d_x2; <span class="comment">// double interval boundaries</span>
00078 <span class="keywordtype">int</span> d_y1, d_y2; <span class="comment">// integer interval boundaries</span>
00079 <span class="keywordtype">double</span> d_cnv; <span class="comment">// conversion factor</span>
00080 <span class="keywordtype">bool</span> d_log; <span class="comment">// logarithmic scale?</span>
00081 };
00082
<a name="l00086"></a><a class="code" href="class_qwt_di_map.html#a11">00086</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_di_map.html#a11">QwtDiMap::d1</a>()<span class="keyword"> const </span>
00087 <span class="keyword"></span>{
00088 <span class="keywordflow">return</span> d_x1;
00089 }
00090
<a name="l00094"></a><a class="code" href="class_qwt_di_map.html#a12">00094</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_di_map.html#a12">QwtDiMap::d2</a>()<span class="keyword"> const </span>
00095 <span class="keyword"></span>{
00096 <span class="keywordflow">return</span> d_x2;
00097 }
00098
<a name="l00102"></a><a class="code" href="class_qwt_di_map.html#a13">00102</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_di_map.html#a13">QwtDiMap::i1</a>()<span class="keyword"> const </span>
00103 <span class="keyword"></span>{
00104 <span class="keywordflow">return</span> d_y1;
00105 }
00106
<a name="l00110"></a><a class="code" href="class_qwt_di_map.html#a14">00110</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_di_map.html#a14">QwtDiMap::i2</a>()<span class="keyword"> const </span>
00111 <span class="keyword"></span>{
00112 <span class="keywordflow">return</span> d_y2;
00113 }
00114
<a name="l00118"></a><a class="code" href="class_qwt_di_map.html#a15">00118</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_di_map.html#a15">QwtDiMap::logarithmic</a>()<span class="keyword"> const </span>
00119 <span class="keyword"></span>{
00120 <span class="keywordflow">return</span> d_log;
00121 }
00122
<a name="l00136"></a><a class="code" href="class_qwt_di_map.html#a7">00136</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_di_map.html#a7">QwtDiMap::transform</a>(<span class="keywordtype">double</span> x)<span class="keyword"> const</span>
00137 <span class="keyword"></span>{
00138 <span class="keywordflow">if</span> (d_log)
00139 <span class="keywordflow">return</span> d_y1 + qRound((log(x) - d_x1) * d_cnv);
00140 <span class="keywordflow">else</span>
00141 <span class="keywordflow">return</span> d_y1 + qRound((x - d_x1) * d_cnv);
00142 }
00143
00144 <span class="preprocessor">#endif</span>
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