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<h1>qwt_point_polar.h</h1> </div>
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<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="l00011"></a>00011 <span class="preprocessor">#ifndef _QWT_POINT_POLAR_H_</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#define _QWT_POINT_POLAR_H_ 1</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span>
<a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_global.h"</span>
<a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_math.h"</span>
<a name="l00016"></a>00016 <span class="preprocessor">#include <qpoint.h></span>
<a name="l00017"></a>00017 <span class="preprocessor">#ifndef QT_NO_DEBUG_STREAM</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#include <qdebug.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#endif</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span>
<a name="l00028"></a><a class="code" href="class_qwt_point_polar.html">00028</a> <span class="keyword">class </span>QWT_EXPORT <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a>
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 <span class="keyword">public</span>:
<a name="l00031"></a>00031 <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a>();
<a name="l00032"></a>00032 <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a>( <span class="keywordtype">double</span> azimuth, <span class="keywordtype">double</span> radius );
<a name="l00033"></a>00033 <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a>( <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a> & );
<a name="l00034"></a>00034 <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a>( <span class="keyword">const</span> QPointF & );
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keywordtype">void</span> setPoint( <span class="keyword">const</span> QPointF & );
<a name="l00037"></a>00037 QPointF toPoint() <span class="keyword">const</span>;
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keywordtype">bool</span> isValid() <span class="keyword">const</span>;
<a name="l00040"></a>00040 <span class="keywordtype">bool</span> isNull() <span class="keyword">const</span>;
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keywordtype">double</span> radius() <span class="keyword">const</span>;
<a name="l00043"></a>00043 <span class="keywordtype">double</span> azimuth() <span class="keyword">const</span>;
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="keywordtype">double</span> &rRadius();
<a name="l00046"></a>00046 <span class="keywordtype">double</span> &rAzimuth();
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordtype">void</span> setRadius( <span class="keywordtype">double</span> );
<a name="l00049"></a>00049 <span class="keywordtype">void</span> setAzimuth( <span class="keywordtype">double</span> );
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keywordtype">bool</span> operator==( <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a> & ) <span class="keyword">const</span>;
<a name="l00052"></a>00052 <span class="keywordtype">bool</span> operator!=( <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a> & ) <span class="keyword">const</span>;
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a> normalized() <span class="keyword">const</span>;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keyword">private</span>:
<a name="l00057"></a>00057 <span class="keywordtype">double</span> d_azimuth;
<a name="l00058"></a>00058 <span class="keywordtype">double</span> d_radius;
<a name="l00059"></a>00059 };
<a name="l00060"></a>00060
<a name="l00065"></a><a class="code" href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">00065</a> <span class="keyword">inline</span> <a class="code" href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">QwtPointPolar::QwtPointPolar</a>():
<a name="l00066"></a>00066 d_azimuth( 0.0 ),
<a name="l00067"></a>00067 d_radius( 0.0 )
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00077"></a><a class="code" href="class_qwt_point_polar.html#af1c77f9730d441937e52ff5beee04975">00077</a> <span class="keyword">inline</span> <a class="code" href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">QwtPointPolar::QwtPointPolar</a>( <span class="keywordtype">double</span> azimuth, <span class="keywordtype">double</span> radius ):
<a name="l00078"></a>00078 d_azimuth( azimuth ),
<a name="l00079"></a>00079 d_radius( radius )
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00087"></a><a class="code" href="class_qwt_point_polar.html#ae5cd7e8ab0505672748f779c9668fe29">00087</a> <span class="keyword">inline</span> <a class="code" href="class_qwt_point_polar.html#a365875acf86a9f052e12784b5f2f7d44">QwtPointPolar::QwtPointPolar</a>( <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a> &other ):
<a name="l00088"></a>00088 d_azimuth( other.d_azimuth ),
<a name="l00089"></a>00089 d_radius( other.d_radius )
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092
<a name="l00094"></a><a class="code" href="class_qwt_point_polar.html#ad1f8c93359d28322b6e3eeb9758a66f2">00094</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_point_polar.html#ad1f8c93359d28322b6e3eeb9758a66f2" title="Returns true if radius() &gt;= 0.0.">QwtPointPolar::isValid</a>()<span class="keyword"> const</span>
<a name="l00095"></a>00095 <span class="keyword"></span>{
<a name="l00096"></a>00096 <span class="keywordflow">return</span> d_radius >= 0.0;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00100"></a><a class="code" href="class_qwt_point_polar.html#a73d21f582ee5960011300598e17fab00">00100</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_point_polar.html#a73d21f582ee5960011300598e17fab00" title="Returns true if radius() &gt;= 0.0.">QwtPointPolar::isNull</a>()<span class="keyword"> const</span>
<a name="l00101"></a>00101 <span class="keyword"></span>{
<a name="l00102"></a>00102 <span class="keywordflow">return</span> d_radius == 0.0;
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00106"></a><a class="code" href="class_qwt_point_polar.html#ab629fcfb36f0f29df45b256c6bddf194">00106</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_point_polar.html#ab629fcfb36f0f29df45b256c6bddf194" title="Returns the radius.">QwtPointPolar::radius</a>()<span class="keyword"> const</span>
<a name="l00107"></a>00107 <span class="keyword"></span>{
<a name="l00108"></a>00108 <span class="keywordflow">return</span> d_radius;
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00112"></a><a class="code" href="class_qwt_point_polar.html#afac65de2dca25b0b6a6c5fb917fff424">00112</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_point_polar.html#afac65de2dca25b0b6a6c5fb917fff424" title="Returns the azimuth.">QwtPointPolar::azimuth</a>()<span class="keyword"> const</span>
<a name="l00113"></a>00113 <span class="keyword"></span>{
<a name="l00114"></a>00114 <span class="keywordflow">return</span> d_azimuth;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00118"></a><a class="code" href="class_qwt_point_polar.html#a69cf76a959e4417038b4e2684d307847">00118</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> &<a class="code" href="class_qwt_point_polar.html#a69cf76a959e4417038b4e2684d307847" title="Returns the radius.">QwtPointPolar::rRadius</a>()
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 <span class="keywordflow">return</span> d_radius;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00124"></a><a class="code" href="class_qwt_point_polar.html#ae509330927d54dbc7cf65fae42083fce">00124</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> &<a class="code" href="class_qwt_point_polar.html#ae509330927d54dbc7cf65fae42083fce" title="Returns the azimuth.">QwtPointPolar::rAzimuth</a>()
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordflow">return</span> d_azimuth;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00130"></a><a class="code" href="class_qwt_point_polar.html#a31ae2f4d6fad44f51ad5e7444a7f21fe">00130</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_point_polar.html#a31ae2f4d6fad44f51ad5e7444a7f21fe" title="Sets the radius to radius.">QwtPointPolar::setRadius</a>( <span class="keywordtype">double</span> radius )
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 d_radius = <a class="code" href="class_qwt_point_polar.html#ab629fcfb36f0f29df45b256c6bddf194" title="Returns the radius.">radius</a>;
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00136"></a><a class="code" href="class_qwt_point_polar.html#a32c6c64510fce3e087d332305b4aca9e">00136</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_point_polar.html#a32c6c64510fce3e087d332305b4aca9e" title="Sets the atimuth to atimuth.">QwtPointPolar::setAzimuth</a>( <span class="keywordtype">double</span> azimuth )
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 d_azimuth = <a class="code" href="class_qwt_point_polar.html#afac65de2dca25b0b6a6c5fb917fff424" title="Returns the azimuth.">azimuth</a>;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="preprocessor">#ifndef QT_NO_DEBUG_STREAM</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span>QWT_EXPORT QDebug operator<<( QDebug, <span class="keyword">const</span> <a class="code" href="class_qwt_point_polar.html" title="A point in polar coordinates.">QwtPointPolar</a> & );
<a name="l00143"></a>00143 <span class="preprocessor">#endif</span>
<a name="l00144"></a>00144 <span class="preprocessor"></span>
<a name="l00145"></a>00145 <span class="keyword">inline</span> QPoint qwtPolar2Pos( <span class="keyword">const</span> QPoint &pole,
<a name="l00146"></a>00146 <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> angle )
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <span class="keyword">const</span> <span class="keywordtype">double</span> x = pole.x() + radius * qCos( angle );
<a name="l00149"></a>00149 <span class="keyword">const</span> <span class="keywordtype">double</span> y = pole.y() - radius * qSin( angle );
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordflow">return</span> QPoint( qRound( x ), qRound( y ) );
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keyword">inline</span> QPoint qwtDegree2Pos( <span class="keyword">const</span> QPoint &pole,
<a name="l00155"></a>00155 <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> angle )
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 <span class="keywordflow">return</span> qwtPolar2Pos( pole, radius, angle / 180.0 * M_PI );
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keyword">inline</span> QPointF qwtPolar2Pos( <span class="keyword">const</span> QPointF &pole,
<a name="l00161"></a>00161 <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> angle )
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163 <span class="keyword">const</span> <span class="keywordtype">double</span> x = pole.x() + radius * qCos( angle );
<a name="l00164"></a>00164 <span class="keyword">const</span> <span class="keywordtype">double</span> y = pole.y() - radius * qSin( angle );
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keywordflow">return</span> QPointF( x, y);
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keyword">inline</span> QPointF qwtDegree2Pos( <span class="keyword">const</span> QPointF &pole,
<a name="l00170"></a>00170 <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> angle )
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="keywordflow">return</span> qwtPolar2Pos( pole, radius, angle / 180.0 * M_PI );
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="keyword">inline</span> QPointF qwtFastPolar2Pos( <span class="keyword">const</span> QPointF &pole,
<a name="l00176"></a>00176 <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> angle )
<a name="l00177"></a>00177 {
<a name="l00178"></a>00178 <span class="preprocessor">#if QT_VERSION < 0x040601</span>
<a name="l00179"></a>00179 <span class="preprocessor"></span> <span class="keyword">const</span> <span class="keywordtype">double</span> x = pole.x() + radius * ::cos( angle );
<a name="l00180"></a>00180 <span class="keyword">const</span> <span class="keywordtype">double</span> y = pole.y() - radius * ::sin( angle );
<a name="l00181"></a>00181 <span class="preprocessor">#else</span>
<a name="l00182"></a>00182 <span class="preprocessor"></span> <span class="keyword">const</span> <span class="keywordtype">double</span> x = pole.x() + radius * qFastCos( angle );
<a name="l00183"></a>00183 <span class="keyword">const</span> <span class="keywordtype">double</span> y = pole.y() - radius * qFastSin( angle );
<a name="l00184"></a>00184 <span class="preprocessor">#endif</span>
<a name="l00185"></a>00185 <span class="preprocessor"></span>
<a name="l00186"></a>00186 <span class="keywordflow">return</span> QPointF( x, y);
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="keyword">inline</span> QPointF qwtFastDegree2Pos( <span class="keyword">const</span> QPointF &pole,
<a name="l00190"></a>00190 <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> angle )
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 <span class="keywordflow">return</span> qwtFastPolar2Pos( pole, radius, angle / 180.0 * M_PI );
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="preprocessor">#endif </span>
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