osg::PrimitiveFunctor Class Reference

Inheritance diagram for osg::PrimitiveFunctor:


Public Member Functions
virtual	~PrimitiveFunctor ()
virtual void	setVertexArray (unsigned int count, const Vec2 *vertices)=0
virtual void	setVertexArray (unsigned int count, const Vec3 *vertices)=0
virtual void	setVertexArray (unsigned int count, const Vec4 *vertices)=0
virtual void	drawArrays (GLenum mode, GLint first, GLsizei count)=0
	Mimics the OpenGL `glDrawArrays()` function.
virtual void	drawElements (GLenum mode, GLsizei count, const GLubyte *indices)=0
	Mimics the OpenGL `glDrawElements()` function.
virtual void	drawElements (GLenum mode, GLsizei count, const GLushort *indices)=0
	Mimics the OpenGL `glDrawElements()` function.
virtual void	drawElements (GLenum mode, GLsizei count, const GLuint *indices)=0
	Mimics the OpenGL `glDrawElements()` function.
virtual void	begin (GLenum mode)=0
	Mimics the OpenGL `glBegin()` function.
virtual void	vertex (const Vec2 &vert)=0
	Mimics the OpenGL `glVertex()` "family of functions".
virtual void	vertex (const Vec3 &vert)=0
	Mimics the OpenGL `glVertex()` "family of functions".
virtual void	vertex (const Vec4 &vert)=0
	Mimics the OpenGL `glVertex()` "family of functions".
virtual void	vertex (float x, float y)=0
	Mimics the OpenGL `glVertex()` "family of functions".
virtual void	vertex (float x, float y, float z)=0
	Mimics the OpenGL `glVertex()` "family of functions".
virtual void	vertex (float x, float y, float z, float w)=0
	Mimics the OpenGL `glVertex()` "family of functions".
virtual void	end ()=0
	Mimics the OpenGL `glEnd()` function.

Detailed Description

A PrimitiveFunctor is used (in conjunction with osg::Drawable::accept (PrimitiveFunctor&)) to get access to the primitives that compose the things drawn by OSG.

If osg::Drawable::accept() is called with a PrimitiveFunctor parameter, the Drawable will "pretend" it is drawing itself, but instead of calling real OpenGL functions, it will call PrimitiveFunctor's member functions that "mimic" the OpenGL calls.

Concrete subclasses of PrimitiveFunctor must implement these methods so that they performs whatever they want.

Constructor & Destructor Documentation

virtual osg::PrimitiveFunctor::~PrimitiveFunctor ( ) [inline, virtual]

Member Function Documentation

virtual void osg::PrimitiveFunctor::begin ( GLenum mode ) [pure virtual]

Mimics the OpenGL glBegin() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::drawArrays	(	GLenum	mode,
		GLint	first,
		GLsizei	count
	)			`[pure virtual]`

Mimics the OpenGL glDrawArrays() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::drawElements	(	GLenum	mode,
		GLsizei	count,
		const GLuint *	indices
	)			`[pure virtual]`

Mimics the OpenGL glDrawElements() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::drawElements	(	GLenum	mode,
		GLsizei	count,
		const GLushort *	indices
	)			`[pure virtual]`

Mimics the OpenGL glDrawElements() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::drawElements	(	GLenum	mode,
		GLsizei	count,
		const GLubyte *	indices
	)			`[pure virtual]`

Mimics the OpenGL glDrawElements() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::end ( ) [pure virtual]

Mimics the OpenGL glEnd() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::setVertexArray	(	unsigned int	count,
		const Vec4 *	vertices
	)			`[pure virtual]`

Sets the array of vertices used to describe the primitives. Somehow mimics the OpenGL glVertexPointer() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::setVertexArray	(	unsigned int	count,
		const Vec3 *	vertices
	)			`[pure virtual]`

Sets the array of vertices used to describe the primitives. Somehow mimics the OpenGL glVertexPointer() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::setVertexArray	(	unsigned int	count,
		const Vec2 *	vertices
	)			`[pure virtual]`

Sets the array of vertices used to describe the primitives. Somehow mimics the OpenGL glVertexPointer() function.

Implemented in osg::TriangleFunctor< T >, and osgUtil::Statistics.

virtual void osg::PrimitiveFunctor::vertex	(	float	x,
		float	y,
		float	z,
		float	w
	)			`[pure virtual]`