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<li class="navelem"><a class="el" href="a01640.html">osgUtil</a> </li>
<li class="navelem"><a class="el" href="a00343.html">HalfWayMapGenerator</a> </li>
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<!-- doxytag: class="osgUtil::HalfWayMapGenerator" --><!-- doxytag: inherits="osgUtil::CubeMapGenerator" -->
<p>This cube map generator produces an Half-way vector map, useful for hardware-based specular lighting effects.
<a href="a00343.html#details">More...</a></p>
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Inheritance diagram for osgUtil::HalfWayMapGenerator:</div>
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<div class="center"><img src="a03360.png" border="0" usemap="#osgUtil_1_1HalfWayMapGenerator_inherit__map" alt="Inheritance graph"/></div>
<map name="osgUtil_1_1HalfWayMapGenerator_inherit__map" id="osgUtil_1_1HalfWayMapGenerator_inherit__map">
<area shape="rect" id="node2" href="a00176.html" title="This is the base class for cube map generators." alt="" coords="15,83,223,112"/><area shape="rect" id="node4" href="a00627.html" title="Base class from providing referencing counted objects." alt="" coords="52,5,185,35"/></map>
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<p><a href="a03361.html">List of all members.</a></p>
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Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00343.html#ad39193f5b71500d5ca118ffd5b99dc02">HalfWayMapGenerator</a> (const <a class="el" href="a01069.html">osg::Vec3</a> &light_direction, int texture_size=64)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00343.html#a3cdfa6bca669ff09cf2a30fd128575fa">HalfWayMapGenerator</a> (const <a class="el" href="a00343.html">HalfWayMapGenerator</a> &copy, const <a class="el" href="a00169.html">osg::CopyOp</a> &copyop)</td></tr>
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Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="a00343.html#a332196eea2cbdd20ebc2ce0769827d56">~HalfWayMapGenerator</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00343.html">HalfWayMapGenerator</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="a00343.html#ab5683f1f634bf38e07ce4e9e848d25e7">operator=</a> (const <a class="el" href="a00343.html">HalfWayMapGenerator</a> &)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="a01074.html">osg::Vec4</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00343.html#ae351515975517c49200f300572f5ff5c">compute_color</a> (const <a class="el" href="a01069.html">osg::Vec3</a> &R) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Override this method to define how colors are computed. <a href="#ae351515975517c49200f300572f5ff5c"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>This cube map generator produces an Half-way vector map, useful for hardware-based specular lighting effects. </p>
<p>It computes: C = normalize(R - L), where C is the resulting color, R is the reflection vector and L is the light direction. </p>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="ad39193f5b71500d5ca118ffd5b99dc02"></a><!-- doxytag: member="osgUtil::HalfWayMapGenerator::HalfWayMapGenerator" ref="ad39193f5b71500d5ca118ffd5b99dc02" args="(const osg::Vec3 &light_direction, int texture_size=64)" -->
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<td class="memname">osgUtil::HalfWayMapGenerator::HalfWayMapGenerator </td>
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<td class="paramtype">const <a class="el" href="a01069.html">osg::Vec3</a> & </td>
<td class="paramname"><em>light_direction</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>texture_size</em> = <code>64</code> </td>
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<td>)</td>
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<a class="anchor" id="a3cdfa6bca669ff09cf2a30fd128575fa"></a><!-- doxytag: member="osgUtil::HalfWayMapGenerator::HalfWayMapGenerator" ref="a3cdfa6bca669ff09cf2a30fd128575fa" args="(const HalfWayMapGenerator &copy, const osg::CopyOp &copyop)" -->
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<td class="memname">osgUtil::HalfWayMapGenerator::HalfWayMapGenerator </td>
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<td class="paramname"><em>copy</em>, </td>
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<td class="paramtype">const <a class="el" href="a00169.html">osg::CopyOp</a> & </td>
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<td>)</td>
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<a class="anchor" id="a332196eea2cbdd20ebc2ce0769827d56"></a><!-- doxytag: member="osgUtil::HalfWayMapGenerator::~HalfWayMapGenerator" ref="a332196eea2cbdd20ebc2ce0769827d56" args="()" -->
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<td class="memname">virtual osgUtil::HalfWayMapGenerator::~HalfWayMapGenerator </td>
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<td><code> [inline, protected, virtual]</code></td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ae351515975517c49200f300572f5ff5c"></a><!-- doxytag: member="osgUtil::HalfWayMapGenerator::compute_color" ref="ae351515975517c49200f300572f5ff5c" args="(const osg::Vec3 &R) const " -->
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<td class="memname"><a class="el" href="a01074.html">osg::Vec4</a> osgUtil::HalfWayMapGenerator::compute_color </td>
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<td class="paramname"><em>R</em></td><td>)</td>
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<p>Override this method to define how colors are computed. </p>
<p>The parameter R is the reflection vector, pointing from the center of the cube. The return value should be the RGBA color associated with that reflection ray. </p>
<p>Implements <a class="el" href="a00176.html#acb56125b5342ef0984cb8be8d3ce8f79">osgUtil::CubeMapGenerator</a>.</p>
<p>References <a class="el" href="a01069.html#a875996d2b29bbe3f0577aafb5b990698">osg::Vec3f::length()</a>, and <a class="el" href="a00176.html#ae05e9d3a7d0439df27b59575777a7b4b">osgUtil::CubeMapGenerator::vector_to_color()</a>.</p>
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<a class="anchor" id="ab5683f1f634bf38e07ce4e9e848d25e7"></a><!-- doxytag: member="osgUtil::HalfWayMapGenerator::operator=" ref="ab5683f1f634bf38e07ce4e9e848d25e7" args="(const HalfWayMapGenerator &)" -->
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<td class="memname"><a class="el" href="a00343.html">HalfWayMapGenerator</a>& osgUtil::HalfWayMapGenerator::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="a00343.html">HalfWayMapGenerator</a> & </td>
<td class="paramname"></td><td>)</td>
<td><code> [inline, protected]</code></td>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>osgUtil/<a class="el" href="a01558.html">HalfWayMapGenerator</a></li>
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<address><small>Generated at Tue May 31 2011 04:19:37 for the <a href="http://www.openscenegraph.org/">OpenSceneGraph</a>
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