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+<!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>NeL: NLMISC::CNoiseValue class Reference</title>
+<link href="doxygen.css" rel="stylesheet" type="text/css">
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+<!-- Generated by Doxygen 1.3.6 -->
+<div class="qindex"> <form class="search" action="search.php" method="get">
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+<h1>NLMISC::CNoiseValue Class Reference</h1><code>#include &lt;<a class="el" href="a06106.html">noise_value.h</a>&gt;</code>
+<p>
+<hr><a name="_details"></a><h2>Detailed Description</h2>
+A class which generate noisy value, according to a position <dl compact><dt><b>Author:</b></dt><dd>Lionel Berenguier <p>
+Nevrax France </dd></dl>
+<dl compact><dt><b>Date:</b></dt><dd>2001 </dd></dl>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06106.html#l00049">49</a> of file <a class="el" href="a06106.html">noise_value.h</a>.<table border=0 cellpadding=0 cellspacing=0>
+<tr><td></td></tr>
+<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValuea0">CNoiseValue</a> (float abs, float rand, float freq)</td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValuea1">CNoiseValue</a> ()</td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default to 0, 1, 1. <a href="#NLMISC_1_1CNoiseValuea1"></a><br><br></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValuea2">eval</a> (const <a class="el" href="a03128.html">CVector</a> &amp;posInWorld) const </td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValuea3">evalOneLevelRandom</a> (const <a class="el" href="a03128.html">CVector</a> &amp;posInWorld) const </td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValuea4">serial</a> (<a class="el" href="a02270.html">IStream</a> &amp;f)</td></tr>
+
+<tr><td colspan=2><br><h2>Data Fields</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValueo0">Abs</a></td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValueo1">Frequency</a></td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValueo2">Rand</a></td></tr>
+
+<tr><td colspan=2><br><h2>Private Member Functions</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValued0">evalRandom</a> (const <a class="el" href="a03128.html">CVector</a> &amp;pos) const </td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>float&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02990.html#NLMISC_1_1CNoiseValued1">noise</a> (const <a class="el" href="a03128.html">CVector</a> &amp;pos) const </td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">pos scale is in [0..1] <a href="#NLMISC_1_1CNoiseValued1"></a><br><br></td></tr>
+</table>
+<hr><h2>Constructor &amp; Destructor Documentation</h2>
+<a class="anchor" name="NLMISC_1_1CNoiseValuea1" doxytag="NLMISC::CNoiseValue::CNoiseValue" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> NLMISC::CNoiseValue::CNoiseValue </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+Default to 0, 1, 1.
+<p>
+
+<p>
+Definition at line <a class="el" href="a06105.html#l00258">258</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+<div class="fragment"><pre>00259 {
+00260 <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo0">Abs</a>= 0;
+00261 <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo2">Rand</a>= 1;
+00262 <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo1">Frequency</a>= 1;
+00263 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValuea0" doxytag="NLMISC::CNoiseValue::CNoiseValue" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> NLMISC::CNoiseValue::CNoiseValue </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">float&nbsp;</td>
+ <td class="mdname" nowrap> <em>abs</em>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td></td>
+ <td class="md" nowrap>float&nbsp;</td>
+ <td class="mdname" nowrap> <em>rand</em>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td></td>
+ <td class="md" nowrap>float&nbsp;</td>
+ <td class="mdname" nowrap> <em>freq</em></td>
+ </tr>
+ <tr>
+ <td></td>
+ <td class="md">)&nbsp;</td>
+ <td class="md" colspan="2"></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06105.html#l00267">267</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+<div class="fragment"><pre>00268 {
+00269 <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo0">Abs</a>= abs;
+00270 <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo2">Rand</a>= rand;
+00271 <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo1">Frequency</a>= freq;
+00272 }
+</pre></div> </td>
+ </tr>
+</table>
+<hr><h2>Member Function Documentation</h2>
+<a class="anchor" name="NLMISC_1_1CNoiseValuea2" doxytag="NLMISC::CNoiseValue::eval" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float NLMISC::CNoiseValue::eval </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">const <a class="el" href="a03128.html">CVector</a> &amp;&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> <em>posInWorld</em> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap> const</td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+return Abs + Rand* noise(Pos*Frequency). with <a class="el" href="a02990.html#NLMISC_1_1CNoiseValued1">noise()</a> E [0..1]. Warning! Use <a class="el" href="a05378.html#a397">OptFastFloor()</a>! So call must be enclosed with a <a class="el" href="a05378.html#a395">OptFastFloorBegin()</a>/OptFastFloorEnd().
+<p>
+Definition at line <a class="el" href="a06105.html#l00276">276</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+References <a class="el" href="a06105.html#l00223">noise()</a>.
+<p>
+Referenced by <a class="el" href="a06105.html#l00309">NLMISC::CNoiseColorGradient::eval()</a>, <a class="el" href="a06686.html#l00176">NL3D::CVegetable::generateGroup()</a>, <a class="el" href="a06686.html#l00190">NL3D::CVegetable::generateGroupBiLinear()</a>, and <a class="el" href="a06686.html#l00306">NL3D::CVegetable::generateInstance()</a>.
+<p>
+<div class="fragment"><pre>00277 {
+00278 <span class="comment">// A single cube in the Grid3d correspond to Frequency==1.</span>
+00279 <span class="comment">// So enlarging size of the grid3d do not affect the frequency aspect.</span>
+00280 <span class="keywordflow">return</span> <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo0">Abs</a> + <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo2">Rand</a> * <a class="code" href="a02990.html#NLMISC_1_1CNoiseValued1">noise</a>(posInWorld*Frequency);
+00281 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValuea3" doxytag="NLMISC::CNoiseValue::evalOneLevelRandom" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float NLMISC::CNoiseValue::evalOneLevelRandom </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">const <a class="el" href="a03128.html">CVector</a> &amp;&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> <em>posInWorld</em> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap> const</td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+same as eval, but eval just one random level for <a class="el" href="a02990.html#NLMISC_1_1CNoiseValued1">noise()</a> =&gt; act much more like a random. Warning! Use <a class="el" href="a05378.html#a397">OptFastFloor()</a>! So call must be enclosed with a <a class="el" href="a05378.html#a395">OptFastFloorBegin()</a>/OptFastFloorEnd().
+<p>
+Definition at line <a class="el" href="a06105.html#l00285">285</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+References <a class="el" href="a06105.html#l00216">evalRandom()</a>.
+<p>
+Referenced by <a class="el" href="a06686.html#l00190">NL3D::CVegetable::generateGroupBiLinear()</a>, and <a class="el" href="a06686.html#l00132">NL3D::CVegetable::generateGroupEx()</a>.
+<p>
+<div class="fragment"><pre>00286 {
+00287 <span class="comment">// A single cube in the Grid3d correspond to Frequency==1.</span>
+00288 <span class="comment">// So enlarging size of the grid3d do not affect the frequency aspect.</span>
+00289 <span class="keywordflow">return</span> <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo0">Abs</a> + <a class="code" href="a02990.html#NLMISC_1_1CNoiseValueo2">Rand</a> * <a class="code" href="a02990.html#NLMISC_1_1CNoiseValued0">evalRandom</a>(posInWorld*Frequency);
+00290 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValued0" doxytag="NLMISC::CNoiseValue::evalRandom" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float NLMISC::CNoiseValue::evalRandom </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">const <a class="el" href="a03128.html">CVector</a> &amp;&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> <em>pos</em> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap> const<code> [private]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06105.html#l00216">216</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+Referenced by <a class="el" href="a06105.html#l00285">evalOneLevelRandom()</a>.
+<p>
+<div class="fragment"><pre>00217 {
+00218 <span class="keywordflow">return</span> CRandomGrid3D::evalNearest(pos);
+00219 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValued1" doxytag="NLMISC::CNoiseValue::noise" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float NLMISC::CNoiseValue::noise </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">const <a class="el" href="a03128.html">CVector</a> &amp;&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> <em>pos</em> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap> const<code> [private]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+pos scale is in [0..1]
+<p>
+
+<p>
+Definition at line <a class="el" href="a06105.html#l00223">223</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+References <a class="el" href="a05646.html#l01013">level</a>, <a class="el" href="a06105.html#l00038">NL3D_NOISE_LEVEL</a>, and <a class="el" href="a05981.html#l00105">uint</a>.
+<p>
+Referenced by <a class="el" href="a06105.html#l00276">eval()</a>.
+<p>
+<div class="fragment"><pre>00224 {
+00225 <span class="comment">// eval "fractaly".</span>
+00226 <span class="keywordtype">float</span> turb;
+00227
+00228 <span class="preprocessor">#if (NL3D_NOISE_LEVEL != 3)</span>
+00229 <span class="preprocessor"></span> CVector vd= pos;
+00230 turb=0;
+00231 <span class="keywordflow">for</span>(<a class="code" href="a04558.html#a15">uint</a> <a class="code" href="a04223.html#a630">level</a>=0;<a class="code" href="a04223.html#a630">level</a>&lt;<a class="code" href="a04682.html#a0">NL3D_NOISE_LEVEL</a>;<a class="code" href="a04223.html#a630">level</a>++)
+00232 {
+00233 <span class="comment">// Add the influence of the ith level.</span>
+00234 turb+= CRandomGrid3D::getLevelSize(level) *
+00235 CRandomGrid3D::evalBiLinear(vd + CRandomGrid3D::getLevelPhase(level) );
+00236 <span class="comment">// Next level at higher frequency</span>
+00237 vd*= 2;
+00238 }
+00239 <span class="preprocessor">#else</span>
+00240 <span class="preprocessor"></span> <span class="comment">// special case. unrolled loop.</span>
+00241 <span class="comment">// level 0 has no phase.</span>
+00242 turb= CRandomGrid3D::getLevelSize(0) *
+00243 CRandomGrid3D::evalBiLinear(pos);
+00244 <span class="comment">// level 1</span>
+00245 turb+= CRandomGrid3D::getLevelSize(1) *
+00246 CRandomGrid3D::evalBiLinear(pos*2 + CRandomGrid3D::getLevelPhase(1) );
+00247 <span class="comment">// level 2</span>
+00248 turb+= CRandomGrid3D::getLevelSize(2) *
+00249 CRandomGrid3D::evalBiLinear(pos*4 + CRandomGrid3D::getLevelPhase(2) );
+00250 <span class="preprocessor">#endif</span>
+00251 <span class="preprocessor"></span>
+00252 <span class="keywordflow">return</span> turb;
+00253 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValuea4" doxytag="NLMISC::CNoiseValue::serial" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> void NLMISC::CNoiseValue::serial </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top"><a class="el" href="a02270.html">IStream</a> &amp;&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> <em>f</em> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06105.html#l00294">294</a> of file <a class="el" href="a06105.html">noise_value.cpp</a>.
+<p>
+References <a class="el" href="a06462.html#l00232">NLMISC::IStream::serial()</a>, and <a class="el" href="a06461.html#l00266">NLMISC::IStream::serialVersion()</a>.
+<p>
+<div class="fragment"><pre>00295 {
+00296 (<span class="keywordtype">void</span>)f.serialVersion(0);
+00297 f.serial(Abs);
+00298 f.serial(Rand);
+00299 f.serial(Frequency);
+00300 }
+</pre></div> </td>
+ </tr>
+</table>
+<hr><h2>Field Documentation</h2>
+<a class="anchor" name="NLMISC_1_1CNoiseValueo0" doxytag="NLMISC::CNoiseValue::Abs" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float <a class="el" href="a02990.html#NLMISC_1_1CNoiseValueo0">NLMISC::CNoiseValue::Abs</a>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06106.html#l00052">52</a> of file <a class="el" href="a06106.html">noise_value.h</a>.
+<p>
+Referenced by <a class="el" href="a06686.html#l00048">NL3D::CVegetable::CVegetable()</a>, and <a class="el" href="a06686.html#l00306">NL3D::CVegetable::generateInstance()</a>. </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValueo1" doxytag="NLMISC::CNoiseValue::Frequency" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float <a class="el" href="a02990.html#NLMISC_1_1CNoiseValueo1">NLMISC::CNoiseValue::Frequency</a>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06106.html#l00054">54</a> of file <a class="el" href="a06106.html">noise_value.h</a>. </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CNoiseValueo2" doxytag="NLMISC::CNoiseValue::Rand" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> float <a class="el" href="a02990.html#NLMISC_1_1CNoiseValueo2">NLMISC::CNoiseValue::Rand</a>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06106.html#l00053">53</a> of file <a class="el" href="a06106.html">noise_value.h</a>.
+<p>
+Referenced by <a class="el" href="a06686.html#l00048">NL3D::CVegetable::CVegetable()</a>, and <a class="el" href="a06686.html#l00306">NL3D::CVegetable::generateInstance()</a>. </td>
+ </tr>
+</table>
+<hr>The documentation for this class was generated from the following files:<ul>
+<li><a class="el" href="a06106.html">noise_value.h</a><li><a class="el" href="a06105.html">noise_value.cpp</a></ul>
+<hr size="1"><address style="align: right;"><small>Generated on Tue Mar 16 13:23:30 2004 for NeL by
+<a href="http://www.doxygen.org/index.html">
+<img src="doxygen.png" alt="doxygen" align="middle" border=0 >
+</a>1.3.6 </small></address>
+</body>
+</html>