osgFX::AnisotropicLighting Class Reference

Inheritance diagram for osgFX::AnisotropicLighting:

List of all members.

Public Member Functions
	AnisotropicLighting ()
	AnisotropicLighting (const AnisotropicLighting &copy, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
	META_Effect (osgFX, AnisotropicLighting,"Anisotropic Lighting","This single-pass effect implements a sort of anisotropic ""lighting that replaces the standard OpenGL lighting model.\n""The final color of vertices is not computed directly, it is ""the result of a texture lookup on a user-supplied lighting ""image map. A vertex program is used to compute the s and t ""texture coordinates as follows: s = (N dot H) ; t = (N dot L) ""where N is the vertex normal, L is the light-to-vertex vector, ""H is the half-way vector. This is a good example of how you ""can use the State::getInitialViewMatrix() method to retrieve ""the view matrix and perform view-dependant effects without ""fakes of any kind.\n""This effect requires the ARB_vertex_program extension.","Marco Jez")
osg::Image *	getLightingMap ()
const osg::Image *	getLightingMap () const
void	setLightingMap (osg::Image *image)
int	getLightNumber () const
void	setLightNumber (int n)
Protected Member Functions
virtual	~AnisotropicLighting ()
AnisotropicLighting &	operator= (const AnisotropicLighting &)
bool	define_techniques ()

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Detailed Description

This single-pass effect implements a sort of anisotropic lighting that replaces the standard OpenGL lighting model. The final color of vertices is not computed directly, it is the result of a texture lookup on a user-supplied lighting image map. A vertex program is used to compute the s and t texture coordinates as follows: s = (N dot H) ; t = (N dot L) where N is the vertex normal, L is the light-to-vertex vector, H is the half-way vector. This is a good example of how you can use the State::getInitialViewMatrix() method to retrieve the view matrix and perform view-dependant effects without fakes of any kind. This effect requires the ARB_vertex_program extension.

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Constructor & Destructor Documentation

osgFX::AnisotropicLighting::AnisotropicLighting

(

)

osgFX::AnisotropicLighting::AnisotropicLighting	(	const AnisotropicLighting &	copy,
		const osg::CopyOp &	copyop = osg::CopyOp::SHALLOW_COPY
	)

virtual osgFX::AnisotropicLighting::~AnisotropicLighting

(

)

[inline, protected, virtual]

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Member Function Documentation

bool osgFX::AnisotropicLighting::define_techniques

(

)

[protected, virtual]

abstract method to be implemented in derived classes; its purpose if to create the techniques that can be used for obtaining the desired effect. You will usually call addTechnique() inside this method.

Implements osgFX::Effect.

const osg::Image * osgFX::AnisotropicLighting::getLightingMap

(

)

const [inline]

get the const lighting map

osg::Image * osgFX::AnisotropicLighting::getLightingMap

(

)

[inline]

get the lighting map

int osgFX::AnisotropicLighting::getLightNumber

(

)

const [inline]

get the OpenGL light number

osgFX::AnisotropicLighting::META_Effect	(	osgFX	,
		AnisotropicLighting	,
		"Anisotropic Lighting"	,
		"This single-pass effect implements a sort of anisotropic ""lighting that replaces the standard OpenGL lighting model.\n""The final color of vertices is not computed	directly,
		it is""the result of a texture lookup on a user-supplied lighting""image map.A vertex program is used to compute the s and t""texture coordinates as follows:s	= (N dot H) ; t = (N dot L) ""where N is the vertex normal,
		L is the light-to-vertex	vector,
		""H is the half-way vector.This is a good example of how you""can use the State::getInitialViewMatrix() method to retrieve""the view matrix and perform view-dependant effects without""fakes of any kind.\n""This effect requires the ARB_vertex_program extension."	,
		"Marco Jez"
	)

AnisotropicLighting& osgFX::AnisotropicLighting::operator=

(

const AnisotropicLighting &

)

[inline, protected]

void osgFX::AnisotropicLighting::setLightingMap

(

osg::Image *

image

)

[inline]

set the lighting map

void osgFX::AnisotropicLighting::setLightNumber

(

int

n

)

[inline]

set the OpenGL light number that will be used in lighting computations

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

• AnisotropicLighting

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