osgUtil::TangentSpaceGenerator Class Reference

#include <TangentSpaceGenerator>

Inheritance 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)
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	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.

Constructor & Destructor Documentation

TangentSpaceGenerator() [1/2]

osgUtil::TangentSpaceGenerator::TangentSpaceGenerator

(

)

Referenced by operator=(), and TangentSpaceGenerator().

TangentSpaceGenerator() [2/2]

osgUtil::TangentSpaceGenerator::TangentSpaceGenerator	(	const TangentSpaceGenerator &	copy,
		const osg::CopyOp &	copyop = osg::CopyOp::SHALLOW_COPY )

References osg::CopyOp::SHALLOW_COPY, and TangentSpaceGenerator().

~TangentSpaceGenerator()

virtual osgUtil::TangentSpaceGenerator::~TangentSpaceGenerator ( )

inlineprotectedvirtual

Member Function Documentation

compute()

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

generate()

void osgUtil::TangentSpaceGenerator::generate	(	osg::Geometry *	geo,
		int	normal_map_tex_unit = 0 )

getBinormalArray() [1/2]

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

inline

References B_.

getBinormalArray() [2/2]

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

inline

References B_.

getIndices()

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

inline

References indices_.

getNormalArray() [1/2]

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

inline

References N_.

getNormalArray() [2/2]

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

inline

References N_.

getTangentArray() [1/2]

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

inline

References T_.

getTangentArray() [2/2]

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

inline

References T_.

operator=()

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

inlineprotected

References TangentSpaceGenerator().

setBinormalArray()

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

inline

References B_.

setNormalArray()

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

inline

References N_.

setTangentArray()

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

inline

References T_.

Member Data Documentation

B_

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

protected

Referenced by getBinormalArray(), getBinormalArray(), and setBinormalArray().

indices_

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

protected

Referenced by getIndices().

N_

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

protected

Referenced by getNormalArray(), getNormalArray(), and setNormalArray().

T_

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

protected

Referenced by getTangentArray(), getTangentArray(), and setTangentArray().

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

• TangentSpaceGenerator