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<h1>LogTransform.cxx</h1><a href="LogTransform_8cxx.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00012"></a>00012 <span class="preprocessor">#ifdef _MSC_VER</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#include "msdevstudio/MSconfig.h"</span>
<a name="l00014"></a>00014 <span class="preprocessor">#endif</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span>
<a name="l00016"></a>00016 <span class="preprocessor">#include "<a class="code" href="LogTransform_8h.html" title="LogTransform class interface.">transforms/LogTransform.h</a>"</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="preprocessor">#include "<a class="code" href="AxisModelBase_8h.html" title="hippodraw::AxisModelBase class interface">axes/AxisModelBase.h</a>"</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include "<a class="code" href="AxisTick_8h.html" title="AxisTick class interface.">axes/AxisTick.h</a>"</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#include <algorithm></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <vector></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <cmath></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <cstdio></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <cassert></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#ifdef ITERATOR_MEMBER_DEFECT</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="keyword">using namespace </span>std;
<a name="l00031"></a>00031 <span class="preprocessor">#else</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="keyword">using</span> std::abs;
<a name="l00033"></a>00033 <span class="keyword">using</span> std::log10;
<a name="l00034"></a>00034 <span class="keyword">using</span> std::pow;
<a name="l00035"></a>00035 <span class="keyword">using</span> std::transform;
<a name="l00036"></a>00036 <span class="keyword">using</span> std::vector;
<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="keyword">using namespace </span>hippodraw;
<a name="l00040"></a>00040
<a name="l00041"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a38b7bd7f0a43cb5880c37f194238b0b0">00041</a> LogTransform::LogTransform ()
<a name="l00042"></a>00042 : <a class="code" href="classhippodraw_1_1UnaryTransform.html" title="A transform that transforms coordinates in one dimension from one coordinate system...">UnaryTransform</a> ( 10 * DBL_MIN, DBL_MAX )
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <a class="code" href="classhippodraw_1_1TransformBase.html#adb41893ba19e889e56c559f25fc1a68a" title="Name of the Transform.">m_name</a> = <span class="stringliteral">"Log"</span>;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a133ded57da1dbd7d6895d97877f65474">00047</a> <a class="code" href="classhippodraw_1_1LogTransform.html#a133ded57da1dbd7d6895d97877f65474" title="The virtual destructor.">LogTransform::~LogTransform</a> ()
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a65091c382bbbe49977ba61e9dcc086df">00051</a> <a class="code" href="classhippodraw_1_1LogTransform.html#a38b7bd7f0a43cb5880c37f194238b0b0" title="The default constructor.">LogTransform::LogTransform</a> ( <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1LogTransform.html" title="A UnaryTransform which takes the log of the coordinate.">LogTransform</a> & lt )
<a name="l00052"></a>00052 : <a class="code" href="classhippodraw_1_1UnaryTransform.html" title="A transform that transforms coordinates in one dimension from one coordinate system...">UnaryTransform</a> ( lt )
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="preprocessor">#ifdef CLONE_DEFECT</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><a class="code" href="classhippodraw_1_1TransformBase.html" title="A transform that transforms coordinates from one coordinate system to another.">TransformBase</a> * <a class="code" href="classhippodraw_1_1LogTransform.html#ab88a549aa670d712ff998fda1aa05b73" title="Creates a new Transform object by copying an existing one.">LogTransform::clone</a> () const
<a name="l00058"></a>00058 <span class="preprocessor">#else</span>
<a name="l00059"></a><a class="code" href="classhippodraw_1_1LogTransform.html#ab88a549aa670d712ff998fda1aa05b73">00059</a> <span class="preprocessor"></span><a class="code" href="classhippodraw_1_1LogTransform.html" title="A UnaryTransform which takes the log of the coordinate.">LogTransform</a> * <a class="code" href="classhippodraw_1_1LogTransform.html#ab88a549aa670d712ff998fda1aa05b73" title="Creates a new Transform object by copying an existing one.">LogTransform::clone</a> () const
<a name="l00060"></a>00060 <span class="preprocessor">#endif</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span>{
<a name="l00062"></a>00062 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classhippodraw_1_1LogTransform.html" title="A UnaryTransform which takes the log of the coordinate.">LogTransform</a> ( *<span class="keyword">this</span> );
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keywordtype">bool</span>
<a name="l00066"></a>00066 <a class="code" href="classhippodraw_1_1LogTransform.html#a792fef1281c0bcc191b5bf4330f5eeb3">LogTransform::</a>
<a name="l00067"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a792fef1281c0bcc191b5bf4330f5eeb3">00067</a> <a class="code" href="classhippodraw_1_1LogTransform.html#a792fef1281c0bcc191b5bf4330f5eeb3">isLinear</a> ()<span class="keyword"> const</span>
<a name="l00068"></a>00068 <span class="keyword"></span>{
<a name="l00069"></a>00069 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a><a class="code" href="classhippodraw_1_1LogTransform.html#aee3a2817949711b6b0a3465c032126a8">00072</a> <span class="keywordtype">void</span> <a class="code" href="classhippodraw_1_1LogTransform.html#aee3a2817949711b6b0a3465c032126a8" title="Transforms the coordinate @ x.">LogTransform::transform</a> ( <span class="keywordtype">double</span> & x )<span class="keyword"> const</span>
<a name="l00073"></a>00073 <span class="keyword"></span>{
<a name="l00074"></a>00074 x = log10 ( x );
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00077"></a><a class="code" href="classhippodraw_1_1LogTransform.html#ae08ffa4131d0bb8a4072fb2c90ee28e9">00077</a> <span class="keywordtype">void</span> <a class="code" href="classhippodraw_1_1LogTransform.html#ae08ffa4131d0bb8a4072fb2c90ee28e9" title="Inverse transforms the coordinate x.">LogTransform::inverseTransform</a> ( <span class="keywordtype">double</span> & x )<span class="keyword"> const</span>
<a name="l00078"></a>00078 <span class="keyword"></span>{
<a name="l00079"></a>00079 x = pow ( 10.0, x );
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordtype">void</span>
<a name="l00083"></a>00083 <a class="code" href="classhippodraw_1_1LogTransform.html#aee3a2817949711b6b0a3465c032126a8" title="Transforms the coordinate @ x.">LogTransform::</a>
<a name="l00084"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a1005e56655132bca417febd05bb02a74">00084</a> <a class="code" href="classhippodraw_1_1LogTransform.html#aee3a2817949711b6b0a3465c032126a8" title="Transforms the coordinate @ x.">transform</a> ( std::vector < double > & x )<span class="keyword"> const</span>
<a name="l00085"></a>00085 <span class="keyword"></span>{
<a name="l00086"></a>00086 <span class="comment">// #ifdef TRANSFORM_DEFECT</span>
<a name="l00087"></a>00087 vector< double >::iterator first = x.begin();
<a name="l00088"></a>00088 <span class="keywordflow">for</span> ( ; first != x.end(); ++first ) {
<a name="l00089"></a>00089 *first = log10 ( *first );
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091 <span class="comment">// #else</span>
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// The following doesn't work for MS BC++ nor gcc 3.0. It does work</span>
<a name="l00094"></a>00094 <span class="comment">// with older versions of gcc and Sun CC, however. So, who is right?</span>
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// std::transform ( x.begin (), x.end (), x.begin (), log10 );</span>
<a name="l00097"></a>00097 <span class="comment">// #endif</span>
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="comment">/* virtual */</span>
<a name="l00101"></a><a class="code" href="classhippodraw_1_1LogTransform.html#ab36d3909864539674c1cfb50d1ffa66f">00101</a> <span class="keywordtype">void</span> <a class="code" href="classhippodraw_1_1LogTransform.html#ab36d3909864539674c1cfb50d1ffa66f" title="Validates the Range, and adjusts the argument Range so that the values are positive...">LogTransform::validate</a> ( <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & range )<span class="keyword"> const</span>
<a name="l00102"></a>00102 <span class="keyword"></span>{
<a name="l00103"></a>00103 <span class="keywordtype">double</span> lo = range.<a class="code" href="classhippodraw_1_1Range.html#a3865c37c86de4e4eafc43b6b40ef05b9" title="Returns the minimum of the range object.">low</a> ();
<a name="l00104"></a>00104 <span class="keywordtype">double</span> hi = range.<a class="code" href="classhippodraw_1_1Range.html#a10f7231db7f0fe0855fc344e98575714" title="Returns the maximum of the range object.">high</a> ();
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordflow">if</span> ( hi <= 0.0 ) hi = 1.0;
<a name="l00107"></a>00107 <span class="comment">// if ( lo <= 0.0 ) lo = hi - 0.99 * hi;</span>
<a name="l00108"></a>00108 <span class="keywordflow">if</span> ( lo <= 0.0 ) lo = range.<a class="code" href="classhippodraw_1_1Range.html#a4b02f1648e2efd2c179f8398b350285b" title="Returns the first positive element in range.">pos</a>();
<a name="l00109"></a>00109
<a name="l00110"></a>00110 range.<a class="code" href="classhippodraw_1_1Range.html#a2618a41860251089e4ab57a83429c27f" title="Sets the minimum of the range object.">setLow</a> ( lo );
<a name="l00111"></a>00111 range.<a class="code" href="classhippodraw_1_1Range.html#a57518687fc2be69b208d7424048b9baa" title="Sets the maximum of the range object.">setHigh</a> ( hi );
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="comment">/* virtual */</span>
<a name="l00115"></a>00115 <span class="keyword">const</span> vector < AxisTick > &
<a name="l00116"></a>00116 <a class="code" href="classhippodraw_1_1LogTransform.html#a63520cdf916ece9fb7de60f014dff1b7" title="Sets the vector of ticks along the axis to which this Log transform is applied.">LogTransform::</a>
<a name="l00117"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a63520cdf916ece9fb7de60f014dff1b7">00117</a> <a class="code" href="classhippodraw_1_1LogTransform.html#a63520cdf916ece9fb7de60f014dff1b7" title="Sets the vector of ticks along the axis to which this Log transform is applied.">setTicks</a> ( <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 <a class="code" href="classhippodraw_1_1LogTransform.html#ada2f4d52253c008767b6ac38f94e985b">setTickStep</a>( axis );
<a name="l00120"></a>00120 <a class="code" href="classhippodraw_1_1LogTransform.html#a14bf1587975bfb3064dd9cc74c8ac66a">setFirstTick</a>( axis );
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keywordflow">return</span> <a class="code" href="classhippodraw_1_1LogTransform.html#af8a49cf2363c45baf09c0c2b8e1849fb">genTicks</a>( axis );
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124
<a name="l00125"></a><a class="code" href="classhippodraw_1_1LogTransform.html#ada2f4d52253c008767b6ac38f94e985b">00125</a> <span class="keywordtype">void</span> <a class="code" href="classhippodraw_1_1LogTransform.html#ada2f4d52253c008767b6ac38f94e985b">LogTransform::setTickStep</a>( <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & range = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>(<span class="keyword">true</span>);
<a name="l00128"></a>00128 <span class="keywordtype">double</span> low = range.<a class="code" href="classhippodraw_1_1Range.html#a3865c37c86de4e4eafc43b6b40ef05b9" title="Returns the minimum of the range object.">low</a>();
<a name="l00129"></a>00129 <span class="keywordtype">double</span> high = range.<a class="code" href="classhippodraw_1_1Range.html#a10f7231db7f0fe0855fc344e98575714" title="Returns the maximum of the range object.">high</a>();
<a name="l00130"></a>00130 <span class="keywordtype">double</span> rangeMag = high / low;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">// The following algorithm determines the magnitude of the range.</span>
<a name="l00133"></a>00133 <span class="keywordtype">double</span> rmag = floor( log10( rangeMag ) );
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="comment">// This is used to determine the first tick.</span>
<a name="l00136"></a>00136 <span class="keywordtype">double</span> pmag = ceil( log10( low ) );
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="comment">// Now we find the magnitude between ticks, getting the minimum</span>
<a name="l00139"></a>00139 <span class="comment">// number of ticks without going below 4.</span>
<a name="l00140"></a>00140 <span class="keywordtype">double</span> tmag = floor( rmag / 3.0 );
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordtype">double</span> tick_step = pow( 10.0, tmag );
<a name="l00143"></a>00143
<a name="l00144"></a>00144 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#af933579f4160e62b19ce2fba5f530c91" title="Sets the magnitude of the range.">setRMag</a>( rmag );
<a name="l00145"></a>00145 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a447254d994d524156b490c0f78dc5c5a" title="Sets the magnitude of the power of ten for the tick labels.">setPMag</a>( pmag );
<a name="l00146"></a>00146 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#ae8434910717057b1d2e5a92bba63a756" title="Sets the tick step.">setTickStep</a>( tick_step );
<a name="l00147"></a>00147
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149
<a name="l00150"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a14bf1587975bfb3064dd9cc74c8ac66a">00150</a> <span class="keywordtype">void</span> <a class="code" href="classhippodraw_1_1LogTransform.html#a14bf1587975bfb3064dd9cc74c8ac66a">LogTransform::setFirstTick</a>( <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00151"></a>00151 {
<a name="l00152"></a>00152 <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & range = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>(<span class="keyword">true</span>);
<a name="l00153"></a>00153 <span class="keywordtype">double</span> low = range.<a class="code" href="classhippodraw_1_1Range.html#a3865c37c86de4e4eafc43b6b40ef05b9" title="Returns the minimum of the range object.">low</a>();
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="comment">//double high = range.high();</span>
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="comment">// This sets the first tick as the low value rounded up to the</span>
<a name="l00158"></a>00158 <span class="comment">// nearest power of 10.</span>
<a name="l00159"></a>00159 <span class="keywordtype">double</span> pmag = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#aa5f0390d0531f504b59bbb13de685328" title="Returns the magnitude of the power of ten for the tick labels.">getPMag</a>();
<a name="l00160"></a>00160 <span class="keywordtype">double</span> first_tick = pow( 10.0, pmag );
<a name="l00161"></a>00161 <span class="keywordtype">double</span> tmp = 0.0;
<a name="l00162"></a>00162 <span class="keywordflow">while</span>( ( tmp = <a class="code" href="classhippodraw_1_1LogTransform.html#abd74bd08997bb9927bc4e82b38b216c8">prevStep</a>( first_tick, axis )) >= low ) {
<a name="l00163"></a>00163 first_tick = tmp;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00166"></a>00166 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a74b0210580d8668f96dabcc2d2260928" title="Sets the value for first tick step.">setFirstTick</a>( first_tick );
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00173"></a><a class="code" href="LogTransform_8cxx.html#a5b78abe7ec141d8c13ef2163a0518883">00173</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="namespacehippodraw.html#a677bae1007193bb8a36edc63239a541a">FLT_EQUAL</a>( <span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y )
<a name="l00174"></a>00174 {
<a name="l00175"></a>00175 <span class="keywordflow">return</span> ( (<span class="keywordtype">double</span>)abs( x - y ) <= 2.0 * ( y * FLT_EPSILON + FLT_MIN ) );
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177
<a name="l00181"></a>00181 <span class="keyword">const</span> vector < AxisTick > &
<a name="l00182"></a>00182 <a class="code" href="classhippodraw_1_1LogTransform.html#af8a49cf2363c45baf09c0c2b8e1849fb">LogTransform::</a>
<a name="l00183"></a><a class="code" href="classhippodraw_1_1LogTransform.html#af8a49cf2363c45baf09c0c2b8e1849fb">00183</a> <a class="code" href="classhippodraw_1_1LogTransform.html#af8a49cf2363c45baf09c0c2b8e1849fb">genTicks</a> ( <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="keywordtype">double</span> ylabel;
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keywordtype">int</span> num_ticks = 0;
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <a class="code" href="classhippodraw_1_1LogTransform.html#afb83347aa94ee29360b10d085dba3e02" title="The ticks generated by this transform.">m_ticks</a>.clear ();
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="comment">// mag is used for scientific notation.</span>
<a name="l00192"></a>00192 <span class="keywordtype">double</span> mag;
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordtype">char</span> pstr[10];
<a name="l00195"></a>00195 <span class="keywordtype">char</span> labl[10];
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="keywordtype">double</span> first_tick = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#ad75d6349899399e6ca07cb1103d86480" title="Returns the value for the first tick step.">getFirstTick</a>();
<a name="l00198"></a>00198 <span class="keywordtype">double</span> tick_step = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a4421f43d8e6dbd79ef9e5f863b2da21c" title="Returns the tick step in the true coordinate system.">getTickStep</a>();
<a name="l00199"></a>00199 <span class="keywordtype">double</span> scale_factor = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#afbde1a57da2ad6bd8e170d77e36e64bb" title="Returns the scale factor.">getScaleFactor</a>();
<a name="l00200"></a>00200 <span class="keywordtype">double</span> max_ticks = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#aa9c4760aa8c522cbb7b7ae6dc826d27d" title="Returns the value for maximum number of ticks.">getMaxTicks</a>();
<a name="l00201"></a>00201 <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & range = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>(<span class="keyword">true</span>);
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="keywordtype">double</span> range_low = range.<a class="code" href="classhippodraw_1_1Range.html#a3865c37c86de4e4eafc43b6b40ef05b9" title="Returns the minimum of the range object.">low</a>();
<a name="l00204"></a>00204 <span class="keywordtype">double</span> range_high = range.<a class="code" href="classhippodraw_1_1Range.html#a10f7231db7f0fe0855fc344e98575714" title="Returns the maximum of the range object.">high</a>();
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keywordtype">double</span> last_tick = first_tick;<span class="comment">//pow( 10.0, ceil( log10( range_high ) ) );</span>
<a name="l00207"></a>00207 <span class="keywordtype">double</span> tmp = 0.0;
<a name="l00208"></a>00208 <span class="keywordflow">while</span> ( ( tmp = <a class="code" href="classhippodraw_1_1LogTransform.html#a6d23bdbdcee6694d68c8357585af3c93">nextStep</a>( last_tick, axis ) ) <= range_high ) {
<a name="l00209"></a>00209 last_tick = tmp;
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211
<a name="l00212"></a>00212 <span class="comment">// The flag for scientific notation activation.</span>
<a name="l00213"></a>00213 <span class="keywordtype">bool</span> sci_not =
<a name="l00214"></a>00214 ( floor( log10( last_tick ) ) > 3.0 ) ||
<a name="l00215"></a>00215 ( floor ( log10 ( first_tick ) ) ) < -3.0;
<a name="l00216"></a>00216 <span class="keywordflow">if</span>( sci_not ) {
<a name="l00217"></a>00217 sprintf( pstr, <span class="stringliteral">"%%1.0fe%%d"</span> );
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordtype">double</span> value = first_tick / tick_step;
<a name="l00221"></a>00221 <span class="keywordtype">bool</span> fresh = <span class="keyword">true</span>;
<a name="l00222"></a>00222 <span class="keywordflow">while</span>( value <= range_high || <a class="code" href="namespacehippodraw.html#a677bae1007193bb8a36edc63239a541a">FLT_EQUAL</a>( range_high, value ) ) {
<a name="l00223"></a>00223 <span class="keywordflow">if</span>( num_ticks >= max_ticks ) {
<a name="l00224"></a>00224 <span class="comment">// So far, this has only occurred for empty histograms. The</span>
<a name="l00225"></a>00225 <span class="comment">//easy fix was to do nothing, but there ought to be a better</span>
<a name="l00226"></a>00226 <span class="comment">// way to handle this.</span>
<a name="l00227"></a>00227 <span class="keywordflow">return</span> <a class="code" href="classhippodraw_1_1LogTransform.html#afb83347aa94ee29360b10d085dba3e02" title="The ticks generated by this transform.">m_ticks</a>;
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="keywordflow">if</span>( !fresh ) {
<a name="l00231"></a>00231 value = <a class="code" href="classhippodraw_1_1LogTransform.html#a6d23bdbdcee6694d68c8357585af3c93">nextStep</a>( value, axis );
<a name="l00232"></a>00232 } <span class="keywordflow">else</span> {
<a name="l00233"></a>00233 value *= tick_step;
<a name="l00234"></a>00234 fresh = <span class="keyword">false</span>;
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="keywordflow">if</span>( value > range_high ) <span class="keywordflow">break</span>;
<a name="l00238"></a>00238 <span class="keywordflow">if</span>( sci_not ) {
<a name="l00239"></a>00239 mag = floor( log10( value ) );
<a name="l00240"></a>00240 ylabel = value / pow( 10.0, mag );
<a name="l00241"></a>00241 sprintf( pstr, <span class="stringliteral">"%%1.0fe%%d"</span> );
<a name="l00242"></a>00242 sprintf( labl, pstr, ylabel, static_cast<int>( mag ) );
<a name="l00243"></a>00243 } <span class="keywordflow">else</span> {
<a name="l00244"></a>00244 ylabel = value;
<a name="l00245"></a>00245 <span class="keywordtype">double</span> tmp = floor( log10( value ) );
<a name="l00246"></a>00246 <span class="keywordflow">if</span>( tmp > 0.0 ) tmp = 0.0;
<a name="l00247"></a>00247 tmp = fabs( tmp );
<a name="l00248"></a>00248 sprintf( pstr, <span class="stringliteral">"%%1.%df"</span>, static_cast<int>( tmp ) );
<a name="l00249"></a>00249 sprintf( labl, pstr, ylabel );
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="keywordtype">double</span> y = value / scale_factor;
<a name="l00253"></a>00253 <a class="code" href="classhippodraw_1_1LogTransform.html#afb83347aa94ee29360b10d085dba3e02" title="The ticks generated by this transform.">m_ticks</a>.push_back( <a class="code" href="classhippodraw_1_1AxisTick.html" title="A class to maintain tick coordinates and string values.">AxisTick</a> ( y, labl ) );
<a name="l00254"></a>00254
<a name="l00255"></a>00255 num_ticks++;
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257
<a name="l00258"></a>00258 <span class="keywordflow">if</span> ( num_ticks < 3 )
<a name="l00259"></a>00259 {
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <a class="code" href="classhippodraw_1_1LogTransform.html#afb83347aa94ee29360b10d085dba3e02" title="The ticks generated by this transform.">m_ticks</a>.clear();
<a name="l00262"></a>00262
<a name="l00263"></a>00263 <span class="keywordtype">double</span> xx = (log10(range_high) - log10(range_low)) / 4;
<a name="l00264"></a>00264 <span class="keywordtype">double</span> yy = log10(range_low);
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=1; i<4; i++)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268
<a name="l00269"></a>00269 value = pow (10.0, xx * i + yy);
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <span class="keywordflow">if</span>( value > range_high ) <span class="keywordflow">continue</span>;
<a name="l00272"></a>00272
<a name="l00273"></a>00273 <span class="keywordtype">double</span> tmp = floor( log10( value ) );
<a name="l00274"></a>00274 <span class="keywordflow">if</span>( tmp > 0.0 ) tmp = 0.0;
<a name="l00275"></a>00275 tmp = fabs( tmp );
<a name="l00276"></a>00276 <span class="keywordflow">if</span> (tmp == 0.0)
<a name="l00277"></a>00277 {
<a name="l00278"></a>00278 value = floor(value);
<a name="l00279"></a>00279 }
<a name="l00280"></a>00280
<a name="l00281"></a>00281 sprintf( pstr, <span class="stringliteral">"%%1.%df"</span>, static_cast<int>( tmp ) );
<a name="l00282"></a>00282 sprintf( labl, pstr, value);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="keywordtype">double</span> y = value / scale_factor;
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <a class="code" href="classhippodraw_1_1LogTransform.html#afb83347aa94ee29360b10d085dba3e02" title="The ticks generated by this transform.">m_ticks</a>.push_back( <a class="code" href="classhippodraw_1_1AxisTick.html" title="A class to maintain tick coordinates and string values.">AxisTick</a> ( y, labl ) );
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289
<a name="l00290"></a>00290 <span class="keywordflow">return</span> <a class="code" href="classhippodraw_1_1LogTransform.html#afb83347aa94ee29360b10d085dba3e02" title="The ticks generated by this transform.">m_ticks</a>;
<a name="l00291"></a>00291 }
<a name="l00292"></a>00292
<a name="l00293"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a6d23bdbdcee6694d68c8357585af3c93">00293</a> <span class="keywordtype">double</span> <a class="code" href="classhippodraw_1_1LogTransform.html#a6d23bdbdcee6694d68c8357585af3c93">LogTransform::nextStep</a> ( <span class="keywordtype">double</span> current, <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295 <span class="keywordtype">double</span> tick_step = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a4421f43d8e6dbd79ef9e5f863b2da21c" title="Returns the tick step in the true coordinate system.">getTickStep</a>(); <span class="comment">// Must already be called</span>
<a name="l00296"></a>00296 <span class="keywordflow">if</span>( tick_step == 1.0 ) {
<a name="l00297"></a>00297 <span class="keywordtype">int</span> bottom = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>( current /
<a name="l00298"></a>00298 pow( 10.0, floor( log10( current ) ) ) );
<a name="l00299"></a>00299 <span class="comment">// Look! I used a switch statement in C++!!!!! What this does</span>
<a name="l00300"></a>00300 <span class="comment">// is go through and add the intermediate 2 and 5 ticks if the</span>
<a name="l00301"></a>00301 <span class="comment">// powers of 10 alone would not have given the minimum number of</span>
<a name="l00302"></a>00302 <span class="comment">// ticks. m_tick_step is completely ignored if the flag is</span>
<a name="l00303"></a>00303 <span class="comment">// true, since it is assumed to be 0.</span>
<a name="l00304"></a>00304
<a name="l00307"></a>00307 <span class="keywordflow">switch</span>( bottom ) {
<a name="l00308"></a>00308 <span class="keywordflow">case</span> 1:
<a name="l00309"></a>00309 current *= 2.0;
<a name="l00310"></a>00310 <span class="keywordflow">break</span>;
<a name="l00311"></a>00311 <span class="keywordflow">case</span> 2:
<a name="l00312"></a>00312 current /= 2.0;
<a name="l00313"></a>00313 current *= 5.0;
<a name="l00314"></a>00314 <span class="keywordflow">break</span>;
<a name="l00315"></a>00315 <span class="keywordflow">case</span> 3:
<a name="l00316"></a>00316 current /= 4.0;
<a name="l00317"></a>00317 current *= 5.0;
<a name="l00318"></a>00318 <span class="keywordflow">break</span>;
<a name="l00319"></a>00319 <span class="keywordflow">case</span> 4: <span class="comment">// a 5 becomes a 4 sometimes because of round of error</span>
<a name="l00320"></a>00320 <span class="keywordflow">case</span> 5:
<a name="l00321"></a>00321 current *= 2.0;
<a name="l00322"></a>00322 <span class="keywordflow">break</span>;
<a name="l00323"></a>00323 <span class="keywordflow">default</span>:
<a name="l00324"></a>00324 current *= 2.0;
<a name="l00325"></a>00325 <span class="comment">// assert ( false );</span>
<a name="l00326"></a>00326 }
<a name="l00327"></a>00327 } <span class="keywordflow">else</span> {
<a name="l00328"></a>00328 current *= tick_step;
<a name="l00329"></a>00329 }
<a name="l00330"></a>00330 <span class="keywordflow">return</span> current;
<a name="l00331"></a>00331 }
<a name="l00332"></a>00332
<a name="l00335"></a><a class="code" href="classhippodraw_1_1LogTransform.html#abd74bd08997bb9927bc4e82b38b216c8">00335</a> <span class="keywordtype">double</span> <a class="code" href="classhippodraw_1_1LogTransform.html#abd74bd08997bb9927bc4e82b38b216c8">LogTransform::prevStep</a> ( <span class="keywordtype">double</span> current, <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00336"></a>00336 {
<a name="l00337"></a>00337 <span class="keywordtype">double</span> tick_step = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a4421f43d8e6dbd79ef9e5f863b2da21c" title="Returns the tick step in the true coordinate system.">getTickStep</a>(); <span class="comment">// It must already be called.</span>
<a name="l00338"></a>00338 <span class="keywordflow">if</span>( tick_step == 1.0 ) {
<a name="l00339"></a>00339 <span class="keywordtype">int</span> base = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>( current /
<a name="l00340"></a>00340 pow( 10.0, floor( log10( current ) ) ) );
<a name="l00341"></a>00341 <span class="comment">// Look! I used a switch statement in C++!!!!! What this does</span>
<a name="l00342"></a>00342 <span class="comment">// is go through and add the intermediate 2 and 5 ticks if the</span>
<a name="l00343"></a>00343 <span class="comment">// powers of 10 alone would not have given the minimum number of</span>
<a name="l00344"></a>00344 <span class="comment">// ticks. m_tick_step is completely ignored if the flag is</span>
<a name="l00345"></a>00345 <span class="comment">// true, since it is assumed to be 0.</span>
<a name="l00346"></a>00346
<a name="l00347"></a>00347 <span class="keywordflow">switch</span>( base ) {
<a name="l00348"></a>00348 <span class="keywordflow">case</span> 1:
<a name="l00349"></a>00349 current /= 2.0;
<a name="l00350"></a>00350 <span class="keywordflow">break</span>;
<a name="l00351"></a>00351 <span class="keywordflow">case</span> 2:
<a name="l00352"></a>00352 current /= 2.0;
<a name="l00353"></a>00353 <span class="keywordflow">break</span>;
<a name="l00354"></a>00354 <span class="keywordflow">case</span> 4:
<a name="l00355"></a>00355 current /= 5.0;
<a name="l00356"></a>00356 current *= 2.0;
<a name="l00357"></a>00357 <span class="keywordflow">break</span>;
<a name="l00358"></a>00358 <span class="keywordflow">case</span> 5:
<a name="l00359"></a>00359 current /= 5.0;
<a name="l00360"></a>00360 current *= 2.0;
<a name="l00361"></a>00361 <span class="keywordflow">break</span>;
<a name="l00362"></a>00362 <span class="keywordflow">default</span>:
<a name="l00363"></a>00363 assert ( <span class="keyword">false</span> );
<a name="l00364"></a>00364 }
<a name="l00365"></a>00365 } <span class="keywordflow">else</span> {
<a name="l00366"></a>00366 current /= tick_step;
<a name="l00367"></a>00367 }
<a name="l00368"></a>00368 <span class="keywordflow">return</span> current;
<a name="l00369"></a>00369 }
<a name="l00370"></a>00370
<a name="l00371"></a>00371 <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> &
<a name="l00372"></a><a class="code" href="classhippodraw_1_1LogTransform.html#ae2ab75931c7af475c0d558f24a9236db">00372</a> <a class="code" href="classhippodraw_1_1LogTransform.html#ae2ab75931c7af475c0d558f24a9236db" title="Sets the range of given axis to be a new &quot;nice&quot; within the limits given...">LogTransform::adjustValues</a> ( <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis, <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & limit )
<a name="l00373"></a>00373 {
<a name="l00374"></a>00374 <span class="comment">//Because the low value, the high value, and the length value of the</span>
<a name="l00375"></a>00375 <span class="comment">//range were so frequently used, I added those three fields. There </span>
<a name="l00376"></a>00376 <span class="comment">//should be an improvement in performance.</span>
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="keywordtype">double</span> mylow, myhigh;
<a name="l00379"></a>00379
<a name="l00380"></a>00380 <span class="comment">// We want to make sure that this is autoscaled. Therefore, to </span>
<a name="l00381"></a>00381 <span class="comment">// be on the safe side we set the minimum range to 0, so that </span>
<a name="l00382"></a>00382 <span class="comment">// the minimum positive value is used.</span>
<a name="l00383"></a>00383 <span class="comment">// Range log( 0.0, getRange().high(), getRange().pos() );</span>
<a name="l00384"></a>00384 <span class="comment">// setRange( log );</span>
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <a class="code" href="classhippodraw_1_1LogTransform.html#a0df014b4ca10fbb97335a532cfecd69c">adjustLogValues</a>( axis );
<a name="l00387"></a>00387 <a class="code" href="classhippodraw_1_1LogTransform.html#ada2f4d52253c008767b6ac38f94e985b">setTickStep</a>( axis ); <span class="comment">// For tick steps are needed by nextStep() & prevStep().</span>
<a name="l00388"></a>00388
<a name="l00389"></a>00389 <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & init_range = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>(<span class="keyword">false</span>);
<a name="l00390"></a>00390 <span class="keywordtype">double</span> low = init_range.<a class="code" href="classhippodraw_1_1Range.html#a3865c37c86de4e4eafc43b6b40ef05b9" title="Returns the minimum of the range object.">low</a>();
<a name="l00391"></a>00391 <span class="keywordtype">double</span> high = init_range.<a class="code" href="classhippodraw_1_1Range.html#a10f7231db7f0fe0855fc344e98575714" title="Returns the maximum of the range object.">high</a>();
<a name="l00392"></a>00392
<a name="l00393"></a>00393 myhigh = mylow = pow( 10.0, axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#aa5f0390d0531f504b59bbb13de685328" title="Returns the magnitude of the power of ten for the tick labels.">getPMag</a>() );
<a name="l00394"></a>00394
<a name="l00395"></a>00395 <span class="comment">// This decreases mylow so that "myrange" covers the whole range</span>
<a name="l00396"></a>00396 <span class="comment">// and then some.</span>
<a name="l00397"></a>00397 <span class="keywordtype">double</span> scale_factor = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#afbde1a57da2ad6bd8e170d77e36e64bb" title="Returns the scale factor.">getScaleFactor</a>();
<a name="l00398"></a>00398 <span class="keywordflow">while</span>( mylow >= low * scale_factor ) {
<a name="l00399"></a>00399 mylow = <a class="code" href="classhippodraw_1_1LogTransform.html#abd74bd08997bb9927bc4e82b38b216c8">prevStep</a>( mylow, axis );
<a name="l00400"></a>00400 }
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="comment">// This increases myhigh so that "myrange" covers the whole range</span>
<a name="l00403"></a>00403 <span class="comment">// and then some.</span>
<a name="l00404"></a>00404 <span class="keywordflow">while</span>( myhigh <= high * scale_factor ) {
<a name="l00405"></a>00405 myhigh = <a class="code" href="classhippodraw_1_1LogTransform.html#a6d23bdbdcee6694d68c8357585af3c93">nextStep</a>( myhigh, axis );
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="comment">// If the range has a magnitude < 10.0, reduce the minimum of the</span>
<a name="l00409"></a>00409 <span class="comment">// range by one tick mark.</span>
<a name="l00410"></a>00410 <span class="keywordflow">if</span>( myhigh / mylow < 10.0 ) {
<a name="l00411"></a>00411 mylow = <a class="code" href="classhippodraw_1_1LogTransform.html#abd74bd08997bb9927bc4e82b38b216c8">prevStep</a>( mylow, axis );
<a name="l00412"></a>00412 }
<a name="l00413"></a>00413
<a name="l00414"></a>00414 <span class="comment">// If the range still has a magnitude < 10.0, increase the maximum</span>
<a name="l00415"></a>00415 <span class="comment">// of the range by one tick mark until the magnitude is 10.0.</span>
<a name="l00416"></a>00416 <span class="keywordflow">while</span>( myhigh / mylow < 10.0 ) {
<a name="l00417"></a>00417 myhigh = <a class="code" href="classhippodraw_1_1LogTransform.html#a6d23bdbdcee6694d68c8357585af3c93">nextStep</a>( myhigh, axis );
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419
<a name="l00420"></a>00420 myhigh /= scale_factor;
<a name="l00421"></a>00421 mylow /= scale_factor;
<a name="l00422"></a>00422
<a name="l00423"></a>00423 <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> new_range ( mylow, myhigh, init_range.<a class="code" href="classhippodraw_1_1Range.html#a4b02f1648e2efd2c179f8398b350285b" title="Returns the first positive element in range.">pos</a>() );
<a name="l00424"></a>00424
<a name="l00425"></a>00425 <span class="comment">// Compare the newrange with init_range. If new range is too wide</span>
<a name="l00426"></a>00426 <span class="comment">// compared to init_range, then do not set newrange.</span>
<a name="l00427"></a>00427
<a name="l00428"></a>00428 <span class="keywordtype">double</span> new_width = new_range.length();
<a name="l00429"></a>00429 <span class="keywordtype">double</span> init_width = init_range.<a class="code" href="classhippodraw_1_1Range.html#ad207cb443e371f73f07e874c504f60c1" title="Returns the length of the range object.">length</a>();
<a name="l00430"></a>00430
<a name="l00431"></a>00431 <span class="keywordflow">if</span> ( new_width > init_width * 10 ){ <span class="comment">// This 10 is a hack. Could be any</span>
<a name="l00432"></a>00432 <span class="comment">// decent number.</span>
<a name="l00433"></a>00433 <span class="keywordflow">if</span> ( low < 0 ) {
<a name="l00434"></a>00434 low *= 1.05; <span class="comment">// This 5% is also a hack.</span>
<a name="l00435"></a>00435 }
<a name="l00436"></a>00436 <span class="keywordflow">else</span>{
<a name="l00437"></a>00437 low *= 0.95;
<a name="l00438"></a>00438 }
<a name="l00439"></a>00439
<a name="l00440"></a>00440 <span class="keywordflow">if</span> ( high < 0 ){
<a name="l00441"></a>00441 high *= 0.95;
<a name="l00442"></a>00442 }
<a name="l00443"></a>00443 <span class="keywordflow">else</span>{
<a name="l00444"></a>00444 high *= 1.05;
<a name="l00445"></a>00445 }
<a name="l00446"></a>00446
<a name="l00447"></a>00447 <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> newRange ( low, high, init_range.<a class="code" href="classhippodraw_1_1Range.html#a4b02f1648e2efd2c179f8398b350285b" title="Returns the first positive element in range.">pos</a>() );
<a name="l00448"></a>00448 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a175253bfecf26b89ced34342b0f2a4b2" title="Sets the Range to overlap of the two ranges.">setIntersectRange</a> ( newRange, limit );
<a name="l00449"></a>00449 <span class="keywordflow">return</span> axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>( <span class="keyword">false</span> );
<a name="l00450"></a>00450
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452
<a name="l00453"></a>00453 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a175253bfecf26b89ced34342b0f2a4b2" title="Sets the Range to overlap of the two ranges.">setIntersectRange</a> ( new_range, limit );
<a name="l00454"></a>00454
<a name="l00455"></a>00455 <span class="keywordflow">return</span> axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>( <span class="keyword">false</span> );
<a name="l00456"></a>00456 }
<a name="l00457"></a>00457
<a name="l00458"></a>00458
<a name="l00459"></a><a class="code" href="classhippodraw_1_1LogTransform.html#a0df014b4ca10fbb97335a532cfecd69c">00459</a> <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & <a class="code" href="classhippodraw_1_1LogTransform.html#a0df014b4ca10fbb97335a532cfecd69c">LogTransform::adjustLogValues</a> ( <a class="code" href="classhippodraw_1_1AxisModelBase.html" title="The AxisModelBase class maintains the Range and scaling of an axis.">AxisModelBase</a> & axis )
<a name="l00460"></a>00460 {
<a name="l00461"></a>00461 <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Range.html" title="Expresses a range of values.">Range</a> & r = axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>( <span class="keyword">false</span> );
<a name="l00462"></a>00462 <span class="keywordtype">double</span> low = r.<a class="code" href="classhippodraw_1_1Range.html#a3865c37c86de4e4eafc43b6b40ef05b9" title="Returns the minimum of the range object.">low</a>();
<a name="l00463"></a>00463 <span class="keywordtype">double</span> high = r.<a class="code" href="classhippodraw_1_1Range.html#a10f7231db7f0fe0855fc344e98575714" title="Returns the maximum of the range object.">high</a>();
<a name="l00464"></a>00464 <span class="keywordtype">double</span> pos = r.<a class="code" href="classhippodraw_1_1Range.html#a4b02f1648e2efd2c179f8398b350285b" title="Returns the first positive element in range.">pos</a>();
<a name="l00465"></a>00465
<a name="l00466"></a>00466 <span class="keywordflow">if</span>( low > 0.0 ) <span class="keywordflow">return</span> r;
<a name="l00467"></a>00467
<a name="l00468"></a>00468 <span class="keywordflow">if</span>( pos == high ) { <span class="comment">// Will give no range</span>
<a name="l00469"></a>00469 <span class="keywordtype">double</span> l = pos / 10.0;
<a name="l00470"></a>00470 <span class="keywordtype">double</span> h = pos * 10.0;
<a name="l00471"></a>00471 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#addffd7d4904f8f6261dae4e2cb51b734" title="Sets the Range to the low and high values.">setRange</a> ( l, h, pos );
<a name="l00472"></a>00472
<a name="l00473"></a>00473 <span class="keywordflow">return</span> axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>( <span class="keyword">false</span> );
<a name="l00474"></a>00474 }
<a name="l00475"></a>00475 <span class="keywordflow">if</span>( pos == DBL_MAX || pos <= 0.0 ) { <span class="comment">// No positive values!!!</span>
<a name="l00476"></a>00476 axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#addffd7d4904f8f6261dae4e2cb51b734" title="Sets the Range to the low and high values.">setRange</a> ( 0.01, 100.0, 1.0 );
<a name="l00477"></a>00477 <span class="keywordflow">return</span> axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>( <span class="keyword">false</span> );
<a name="l00478"></a>00478 }
<a name="l00479"></a>00479 <span class="keywordflow">if</span> ( low <= 0.0 ) axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#addffd7d4904f8f6261dae4e2cb51b734" title="Sets the Range to the low and high values.">setRange</a> ( 0.5 * pos, high, pos );
<a name="l00480"></a>00480 <span class="keywordflow">else</span> axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#addffd7d4904f8f6261dae4e2cb51b734" title="Sets the Range to the low and high values.">setRange</a> ( pos, high, pos );
<a name="l00481"></a>00481
<a name="l00482"></a>00482 <span class="keywordflow">return</span> axis.<a class="code" href="classhippodraw_1_1AxisModelBase.html#a47adba99d1bb0dd9eb9800f931feb672" title="Returns the range represented by this AxisModel.">getRange</a>( <span class="keyword">false</span> );
<a name="l00483"></a>00483 }
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