OpenSceneGraph 2.8.4
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The TangentSpaceGenerator class generates three arrays containing tangent-space basis vectors. More...
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.
osgUtil::TangentSpaceGenerator::TangentSpaceGenerator | ( | ) |
osgUtil::TangentSpaceGenerator::TangentSpaceGenerator | ( | const TangentSpaceGenerator & | copy, |
const osg::CopyOp & | copyop = osg::CopyOp::SHALLOW_COPY |
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) |
virtual osgUtil::TangentSpaceGenerator::~TangentSpaceGenerator | ( | ) | [inline, protected, virtual] |
void osgUtil::TangentSpaceGenerator::compute | ( | osg::PrimitiveSet * | pset, |
const osg::Array * | vx, | ||
const osg::Array * | nx, | ||
const osg::Array * | tx, | ||
int | iA, | ||
int | iB, | ||
int | iC | ||
) | [protected] |
void osgUtil::TangentSpaceGenerator::generate | ( | osg::Geometry * | geo, |
int | normal_map_tex_unit = 0 |
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) |
osg::Vec4Array* osgUtil::TangentSpaceGenerator::getBinormalArray | ( | ) | [inline] |
const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getBinormalArray | ( | ) | const [inline] |
osg::IndexArray* osgUtil::TangentSpaceGenerator::getIndices | ( | ) | [inline] |
osg::Vec4Array* osgUtil::TangentSpaceGenerator::getNormalArray | ( | ) | [inline] |
const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getNormalArray | ( | ) | const [inline] |
osg::Vec4Array* osgUtil::TangentSpaceGenerator::getTangentArray | ( | ) | [inline] |
const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getTangentArray | ( | ) | const [inline] |
TangentSpaceGenerator& osgUtil::TangentSpaceGenerator::operator= | ( | const TangentSpaceGenerator & | ) | [inline, protected] |
void osgUtil::TangentSpaceGenerator::setBinormalArray | ( | osg::Vec4Array * | array | ) | [inline] |
void osgUtil::TangentSpaceGenerator::setNormalArray | ( | osg::Vec4Array * | array | ) | [inline] |
void osgUtil::TangentSpaceGenerator::setTangentArray | ( | osg::Vec4Array * | array | ) | [inline] |
osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::B_ [protected] |
osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::N_ [protected] |
osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::T_ [protected] |
![]() | Generated at Sun Jan 8 2012 13:17:03 for the OpenSceneGraph by doxygen 1.7.4. |