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osgUtil::TangentSpaceGenerator Class Reference
Inheritance diagram for osgUtil::TangentSpaceGenerator:
osg::Referenced

Public Member Functions

 TangentSpaceGenerator ()
 TangentSpaceGenerator (const TangentSpaceGenerator &copy, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
void generate (osg::Geometry *geo, int normal_map_tex_unit=0)
osg::Vec4ArraygetTangentArray ()
const osg::Vec4ArraygetTangentArray () const
void setTangentArray (osg::Vec4Array *array)
osg::Vec4ArraygetNormalArray ()
const osg::Vec4ArraygetNormalArray () const
void setNormalArray (osg::Vec4Array *array)
osg::Vec4ArraygetBinormalArray ()
const osg::Vec4ArraygetBinormalArray () const
void setBinormalArray (osg::Vec4Array *array)
osg::IndexArraygetIndices ()
- Public Member Functions inherited from osg::Referenced
 Referenced ()
 Referenced (bool threadSafeRefUnref)
 Referenced (const Referenced &)
Referencedoperator= (const Referenced &)
virtual void setThreadSafeRefUnref (bool threadSafe)
bool getThreadSafeRefUnref () const
OpenThreads::MutexgetRefMutex () const
int ref () const
int unref () const
int unref_nodelete () const
int referenceCount () const
ObserverSetgetObserverSet () const
ObserverSetgetOrCreateObserverSet () const
void addObserver (Observer *observer) const
void removeObserver (Observer *observer) const

Protected Member Functions

virtual ~TangentSpaceGenerator ()
TangentSpaceGeneratoroperator= (const TangentSpaceGenerator &)
void compute (osg::PrimitiveSet *pset, const osg::Array *vx, const osg::Array *nx, const osg::Array *tx, int iA, int iB, int iC)
- Protected Member Functions inherited from osg::Referenced
virtual ~Referenced ()
void signalObserversAndDelete (bool signalDelete, bool doDelete) const
void deleteUsingDeleteHandler () const

Protected Attributes

osg::ref_ptr< osg::Vec4ArrayT_
osg::ref_ptr< osg::Vec4ArrayB_
osg::ref_ptr< osg::Vec4ArrayN_
osg::ref_ptr< osg::UIntArrayindices_
- Protected Attributes inherited from osg::Referenced
OpenThreads::AtomicPtr _observerSet
OpenThreads::Atomic _refCount

Additional Inherited Members

- Static Public Member Functions inherited from osg::Referenced
static OpenThreads::MutexgetGlobalReferencedMutex ()
static void setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)
static bool getThreadSafeReferenceCounting ()
static void setDeleteHandler (DeleteHandler *handler)
static DeleteHandlergetDeleteHandler ()

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

osgUtil::TangentSpaceGenerator::TangentSpaceGenerator ( )
osgUtil::TangentSpaceGenerator::TangentSpaceGenerator ( const TangentSpaceGenerator copy,
const osg::CopyOp copyop = osg::CopyOp::SHALLOW_COPY 
)
virtual osgUtil::TangentSpaceGenerator::~TangentSpaceGenerator ( )
inlineprotectedvirtual

Member Function Documentation

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 
)
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 )
inlineprotected
void osgUtil::TangentSpaceGenerator::setBinormalArray ( osg::Vec4Array array)
inline
void osgUtil::TangentSpaceGenerator::setNormalArray ( osg::Vec4Array array)
inline
void osgUtil::TangentSpaceGenerator::setTangentArray ( osg::Vec4Array array)
inline

Member Data Documentation

osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::B_
protected
osg::ref_ptr<osg::UIntArray> osgUtil::TangentSpaceGenerator::indices_
protected
osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::N_
protected
osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::T_
protected

The documentation for this class was generated from the following file: