SurgSim::Graphics::TangentSpaceGenerator Class Reference

Node visitor which calculates the tangent space basis vectors from the texture coordinates of any geometry it encounters. More...

#include <TangentSpaceGenerator.h>

Inheritance diagram for SurgSim::Graphics::TangentSpaceGenerator:

Public Member Functions
	TangentSpaceGenerator (int textureCoordUnit, int tangentAttribIndex, int bitangentAttribIndex)
	Constructor. More...
virtual	~TangentSpaceGenerator ()
	Destructor.
void	setBasisOrthonormality (bool orthonormal)
	Sets whether the three tangent space basis vectors are made to be orthonormal; otherwise, each tangent is separately orthonormal to the normal, but not to each other. More...
bool	getBasisOrthonormality ()
	Gets whether the three tangent space basis vectors are made to be orthonormal; otherwise, each tangent is separately orthonormal to the normal, but not to each other.
void	apply (osg::Geode &geode) override
	Generates tangent space vectors for all geometry in the geode. More...

Static Public Member Functions
static void	generateTangentSpace (osg::Geometry *geometry, int textureCoordUnit, int tangentAttribIndex, int bitangentAttribIndex, bool orthonormal)
	Generates tangent space basis vectors for the geometry. More...

Detailed Description

Node visitor which calculates the tangent space basis vectors from the texture coordinates of any geometry it encounters.

Constructor & Destructor Documentation

TangentSpaceGenerator()

SurgSim::Graphics::TangentSpaceGenerator::TangentSpaceGenerator	(	int	textureCoordUnit,
		int	tangentAttribIndex,
		int	bitangentAttribIndex
	)

Constructor.

Parameters

textureCoordUnit	Texture unit of texture coordinates to use for calculating the tangent space
tangentAttribIndex	Index of the vertex attribute array to store the calculated tangents
bitangentAttribIndex	Index of the vertex attribute array to store the calculated bitangents

Member Function Documentation

apply()

void SurgSim::Graphics::TangentSpaceGenerator::apply ( osg::Geode &  geode )

override

Generates tangent space vectors for all geometry in the geode.

Parameters

geode

Geode to generate tangent space vectors

generateTangentSpace()

void SurgSim::Graphics::TangentSpaceGenerator::generateTangentSpace ( osg::Geometry *  geometry, int  textureCoordUnit, int  tangentAttribIndex, int  bitangentAttribIndex, bool  orthonormal  )

static

Generates tangent space basis vectors for the geometry.

Parameters

geometry	Geometry to generate normals
textureCoordUnit	Texture unit of texture coordinates to use for calculating the tangent space
tangentAttribIndex	Index of the vertex attribute array to store the calculated tangents
bitangentAttribIndex	Index of the vertex attribute array to store the calculated bi-tangents
orthonormal	Whether or not to create a fully orthonormal basis; otherwise, each tangent is separately orthonormal to the normal, but not to each other

setBasisOrthonormality()

void SurgSim::Graphics::TangentSpaceGenerator::setBasisOrthonormality

(

bool

orthonormal

)

Sets whether the three tangent space basis vectors are made to be orthonormal; otherwise, each tangent is separately orthonormal to the normal, but not to each other.

Parameters

orthonormal

Whether or not to create a fully orthonormal basis

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

• SurgSim/Graphics/TangentSpaceGenerator.h
• SurgSim/Graphics/TangentSpaceGenerator.cpp