osgUtil::TangentSpaceGenerator Class Reference

#include <TangentSpaceGenerator.h>

Inheritance diagram for osgUtil::TangentSpaceGenerator:

Collaboration diagram for osgUtil::TangentSpaceGenerator:

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::Vec4Array *	getTangentArray ()
const osg::Vec4Array *	getTangentArray () const
void	setTangentArray (osg::Vec4Array *array)
osg::Vec4Array *	getNormalArray ()
const osg::Vec4Array *	getNormalArray () const
void	setNormalArray (osg::Vec4Array *array)
osg::Vec4Array *	getBinormalArray ()
const osg::Vec4Array *	getBinormalArray () const
void	setBinormalArray (osg::Vec4Array *array)
osg::IndexArray *	getIndices ()
Public Member Functions inherited from osg::Referenced
	Referenced ()
	Referenced (bool threadSafeRefUnref)
	Referenced (const Referenced &)
Referenced &	operator= (const Referenced &)
virtual void	setThreadSafeRefUnref (bool threadSafe)
bool	getThreadSafeRefUnref () const
OpenThreads::Mutex *	getRefMutex () const
int	ref () const
int	unref () const
int	unref_nodelete () const
int	referenceCount () const
ObserverSet *	getObserverSet () const
ObserverSet *	getOrCreateObserverSet () const
void	addObserver (Observer *observer) const
void	removeObserver (Observer *observer) const

Protected Member Functions
virtual	~TangentSpaceGenerator ()
TangentSpaceGenerator &	operator= (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::Vec4Array >	T_
osg::ref_ptr< osg::Vec4Array >	B_
osg::ref_ptr< osg::Vec4Array >	N_
osg::ref_ptr< osg::UIntArray >	indices_
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::Mutex *	getGlobalReferencedMutex ()
static void	setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)
static bool	getThreadSafeReferenceCounting ()
static void	setDeleteHandler (DeleteHandler *handler)
static DeleteHandler *	getDeleteHandler ()

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.

Definition at line 38 of file TangentSpaceGenerator.h.

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

Definition at line 61 of file TangentSpaceGenerator.h.

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

Definition at line 53 of file TangentSpaceGenerator.h.

const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getBinormalArray ( ) const

inline

Definition at line 54 of file TangentSpaceGenerator.h.

osg::IndexArray* osgUtil::TangentSpaceGenerator::getIndices ( )

inline

Definition at line 57 of file TangentSpaceGenerator.h.

osg::Vec4Array* osgUtil::TangentSpaceGenerator::getNormalArray ( )

inline

Definition at line 49 of file TangentSpaceGenerator.h.

const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getNormalArray ( ) const

inline

Definition at line 50 of file TangentSpaceGenerator.h.

osg::Vec4Array* osgUtil::TangentSpaceGenerator::getTangentArray ( )

inline

Definition at line 45 of file TangentSpaceGenerator.h.

const osg::Vec4Array* osgUtil::TangentSpaceGenerator::getTangentArray ( ) const

inline

Definition at line 46 of file TangentSpaceGenerator.h.

TangentSpaceGenerator& osgUtil::TangentSpaceGenerator::operator= ( const TangentSpaceGenerator &  )

inlineprotected

Definition at line 62 of file TangentSpaceGenerator.h.

void osgUtil::TangentSpaceGenerator::setBinormalArray ( osg::Vec4Array *  array )

inline

Definition at line 55 of file TangentSpaceGenerator.h.

void osgUtil::TangentSpaceGenerator::setNormalArray ( osg::Vec4Array *  array )

inline

Definition at line 51 of file TangentSpaceGenerator.h.

void osgUtil::TangentSpaceGenerator::setTangentArray ( osg::Vec4Array *  array )

inline

Definition at line 47 of file TangentSpaceGenerator.h.

Member Data Documentation

osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::B_

protected

Definition at line 71 of file TangentSpaceGenerator.h.

osg::ref_ptr<osg::UIntArray> osgUtil::TangentSpaceGenerator::indices_

protected

Definition at line 73 of file TangentSpaceGenerator.h.

osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::N_

protected

Definition at line 72 of file TangentSpaceGenerator.h.

osg::ref_ptr<osg::Vec4Array> osgUtil::TangentSpaceGenerator::T_

protected

Definition at line 70 of file TangentSpaceGenerator.h.

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

• osg_head/include/osgUtil/TangentSpaceGenerator.h