osgUtil::TangentSpaceGenerator Class Reference
The TangentSpaceGenerator class generates three arrays containing tangent-space basis vectors.
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Inheritance diagram for osgUtil::TangentSpaceGenerator:
[legend]List of all members.
Detailed Description
The TangentSpaceGenerator class generates three arrays containing tangent-space basis vectors.
It takes a texture-mapped Geometry object as input, traverses its primitive sets and computes Tangent, Normal and Binormal vectors for each vertex, storing them into arrays. The resulting arrays can be used as vertex program varying (per-vertex) parameters, enabling advanced effects like bump-mapping. To use this class, simply call the generate() method specifying the Geometry object you want to process and the texture unit that contains UV mapping for the normal map; then you can retrieve the TBN arrays by calling getTangentArray(), getNormalArray() and getBinormalArray() methods.
Constructor & Destructor Documentation
TangentSpaceGenerator::TangentSpaceGenerator |
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virtual osgUtil::TangentSpaceGenerator::~TangentSpaceGenerator |
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Member Function Documentation
void TangentSpaceGenerator::generate |
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osg::Geometry * |
geo, |
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int |
normal_map_tex_unit = 0 |
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const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getBinormalArray |
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osg::Vec4Array* osgUtil::TangentSpaceGenerator::getBinormalArray |
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const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getNormalArray |
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const [inline] |
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osg::Vec4Array* osgUtil::TangentSpaceGenerator::getNormalArray |
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const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getTangentArray |
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osg::Vec4Array* osgUtil::TangentSpaceGenerator::getTangentArray |
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void osgUtil::TangentSpaceGenerator::setBinormalArray |
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osg::Vec4Array * |
array |
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void osgUtil::TangentSpaceGenerator::setNormalArray |
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osg::Vec4Array * |
array |
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void osgUtil::TangentSpaceGenerator::setTangentArray |
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osg::Vec4Array * |
array |
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The documentation for this class was generated from the following files:
Generated at Sat Mar 18 09:00:38 2006 for the OpenSceneGraph
by doxygen 1.4.6.