📄 qwt__scale__map_8cpp-source.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: qwt_scale_map.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><h1>qwt_scale_map.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span><a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span><a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span><a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span><a name="l00005"></a>00005 <span class="comment"> * </span><a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span><a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span><a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span><a name="l00009"></a>00009 <a name="l00010"></a>00010 <span class="preprocessor">#include "qwt_scale_map.h"</span><a name="l00011"></a>00011 <a name="l00012"></a>00012 QT_STATIC_CONST_IMPL <span class="keywordtype">double</span> <a class="code" href="class_qwt_scale_map.html#dacf5fdb36940d39929993083f6cb64b">QwtScaleMap::LogMin</a> = 1.0e-150;<a name="l00013"></a>00013 QT_STATIC_CONST_IMPL <span class="keywordtype">double</span> <a class="code" href="class_qwt_scale_map.html#0f06d4698bcb8af2200e37609b4b88c4">QwtScaleMap::LogMax</a> = 1.0e150;<a name="l00014"></a>00014 <a name="l00016"></a><a class="code" href="class_qwt_scale_transformation.html#b1e8473584fe5146322fd4a745727a5f">00016</a> <a class="code" href="class_qwt_scale_transformation.html#b1e8473584fe5146322fd4a745727a5f">QwtScaleTransformation::QwtScaleTransformation</a>(<a class="code" href="class_qwt_scale_transformation.html#5b4e85a0640906586b3180872aaeb786">Type</a> type):<a name="l00017"></a>00017 d_type(type)<a name="l00018"></a>00018 {<a name="l00019"></a>00019 }<a name="l00020"></a>00020 <a name="l00021"></a><a class="code" href="class_qwt_scale_transformation.html#2eccd8e538af9a3105f61f9f20a0ad8b">00021</a> <a class="code" href="class_qwt_scale_transformation.html#2eccd8e538af9a3105f61f9f20a0ad8b">QwtScaleTransformation::~QwtScaleTransformation</a>()<a name="l00022"></a>00022 {<a name="l00023"></a>00023 }<a name="l00024"></a>00024 <a name="l00025"></a><a class="code" href="class_qwt_scale_transformation.html#ce4c90eefe778f87a11e0be1f27df0a6">00025</a> <a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> *<a class="code" href="class_qwt_scale_transformation.html#ce4c90eefe778f87a11e0be1f27df0a6">QwtScaleTransformation::copy</a>()<span class="keyword"> const</span><a name="l00026"></a>00026 <span class="keyword"></span>{<a name="l00027"></a>00027 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a>(d_type);<a name="l00028"></a>00028 }<a name="l00029"></a>00029 <a name="l00047"></a><a class="code" href="class_qwt_scale_transformation.html#54768a41cd5d7867e74c0d0032e45ec2">00047</a> <span class="keywordtype">double</span> <a class="code" href="class_qwt_scale_transformation.html#54768a41cd5d7867e74c0d0032e45ec2">QwtScaleTransformation::xForm</a>(<a name="l00048"></a>00048 <span class="keywordtype">double</span> s, <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> s2, <span class="keywordtype">double</span> p1, <span class="keywordtype">double</span> p2)<span class="keyword"> const</span><a name="l00049"></a>00049 <span class="keyword"></span>{<a name="l00050"></a>00050 <span class="keywordflow">if</span> ( d_type == Log10 ) <a name="l00051"></a>00051 <span class="keywordflow">return</span> p1 + (p2 - p1) / log(s2 / s1) * log(s / s1);<a name="l00052"></a>00052 <span class="keywordflow">else</span> <a name="l00053"></a>00053 <span class="keywordflow">return</span> p1 + (p2 - p1) / (s2 - s1) * (s - s1);<a name="l00054"></a>00054 }<a name="l00055"></a>00055 <a name="l00070"></a><a class="code" href="class_qwt_scale_transformation.html#7e2ba833b068f941d79d443bee769b42">00070</a> <span class="keywordtype">double</span> <a class="code" href="class_qwt_scale_transformation.html#7e2ba833b068f941d79d443bee769b42">QwtScaleTransformation::invXForm</a>(<span class="keywordtype">double</span> p, <span class="keywordtype">double</span> p1, <span class="keywordtype">double</span> p2, <a name="l00071"></a>00071 <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> s2)<span class="keyword"> const</span><a name="l00072"></a>00072 <span class="keyword"></span>{<a name="l00073"></a>00073 <span class="keywordflow">if</span> ( d_type == Log10 ) <a name="l00074"></a>00074 <span class="keywordflow">return</span> exp((p - p1) / (p2 - p1) * log(s2 / s1)) * s1;<a name="l00075"></a>00075 <span class="keywordflow">else</span><a name="l00076"></a>00076 <span class="keywordflow">return</span> s1 + (s2 - s1) / (p2 - p1) * (p - p1);<a name="l00077"></a>00077 }<a name="l00078"></a>00078 <a name="l00084"></a><a class="code" href="class_qwt_scale_map.html#9576a2e19c0be1d036fee344ab68f542">00084</a> <a class="code" href="class_qwt_scale_map.html#9576a2e19c0be1d036fee344ab68f542">QwtScaleMap::QwtScaleMap</a>():<a name="l00085"></a>00085 d_s1(0.0),<a name="l00086"></a>00086 d_s2(1.0),<a name="l00087"></a>00087 d_p1(0.0),<a name="l00088"></a>00088 d_p2(1.0),<a name="l00089"></a>00089 d_cnv(1.0)<a name="l00090"></a>00090 {<a name="l00091"></a>00091 d_transformation = <span class="keyword">new</span> <a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a>(<a name="l00092"></a>00092 QwtScaleTransformation::Linear);<a name="l00093"></a>00093 }<a name="l00094"></a>00094 <a name="l00095"></a><a class="code" href="class_qwt_scale_map.html#579bc766106d98edd7153e62ea77a19b">00095</a> <a class="code" href="class_qwt_scale_map.html#9576a2e19c0be1d036fee344ab68f542">QwtScaleMap::QwtScaleMap</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a>& other):<a name="l00096"></a>00096 d_s1(other.d_s1),<a name="l00097"></a>00097 d_s2(other.d_s2),<a name="l00098"></a>00098 d_p1(other.d_p1),<a name="l00099"></a>00099 d_p2(other.d_p2),<a name="l00100"></a>00100 d_cnv(other.d_cnv)<a name="l00101"></a>00101 {<a name="l00102"></a>00102 d_transformation = other.<a class="code" href="class_qwt_scale_map.html#b5b246849496c471c72f0a83ddbd5d33">d_transformation</a>-><a class="code" href="class_qwt_scale_transformation.html#ce4c90eefe778f87a11e0be1f27df0a6">copy</a>();<a name="l00103"></a>00103 }<a name="l00104"></a>00104 <a name="l00108"></a><a class="code" href="class_qwt_scale_map.html#ecafd09423984a5e0ffa935d1b45110c">00108</a> <a class="code" href="class_qwt_scale_map.html#ecafd09423984a5e0ffa935d1b45110c">QwtScaleMap::~QwtScaleMap</a>()<a name="l00109"></a>00109 {<a name="l00110"></a>00110 <span class="keyword">delete</span> d_transformation;<a name="l00111"></a>00111 }<a name="l00112"></a>00112 <a name="l00113"></a><a class="code" href="class_qwt_scale_map.html#3f55ef14f8874e626380fcf92b096791">00113</a> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a> &<a class="code" href="class_qwt_scale_map.html#3f55ef14f8874e626380fcf92b096791">QwtScaleMap::operator=</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a> &other)<a name="l00114"></a>00114 {<a name="l00115"></a>00115 d_s1 = other.<a class="code" href="class_qwt_scale_map.html#d35fd72782122d934c8637e04602cf37">d_s1</a>;<a name="l00116"></a>00116 d_s2 = other.<a class="code" href="class_qwt_scale_map.html#8447d7bb90737e6877cc0efe476f6f15">d_s2</a>;<a name="l00117"></a>00117 d_p1 = other.<a class="code" href="class_qwt_scale_map.html#b4532b83df3740afda20b9d573badd17">d_p1</a>;⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -