osg::TriangleFunctor< T > Class Template Reference

Provides access to the triangles that compose an osg::Drawable. More...

Inheritance diagram for osg::TriangleFunctor< T >:

[legend]

List of all members.

Public Member Functions
	TriangleFunctor ()
virtual	~TriangleFunctor ()
void	setTreatVertexDataAsTemporary (bool treatVertexDataAsTemporary)
bool	getTreatVertexDataAsTemporary () const
virtual void	setVertexArray (unsigned int, const Vec2 *)
	Sets the array of vertices used to describe the primitives.
virtual void	setVertexArray (unsigned int count, const Vec3 *vertices)
	Sets the array of vertices used to describe the primitives.
virtual void	setVertexArray (unsigned int, const Vec4 *)
	Sets the array of vertices used to describe the primitives.
virtual void	drawArrays (GLenum mode, GLint first, GLsizei count)
	Mimics the OpenGL glDrawArrays() function.
virtual void	drawElements (GLenum mode, GLsizei count, const GLubyte *indices)
	Mimics the OpenGL glDrawElements() function.
virtual void	drawElements (GLenum mode, GLsizei count, const GLushort *indices)
	Mimics the OpenGL glDrawElements() function.
virtual void	drawElements (GLenum mode, GLsizei count, const GLuint *indices)
	Mimics the OpenGL glDrawElements() function.
virtual void	begin (GLenum mode)
	Note: begin(.
virtual void	vertex (const Vec2 &vert)
	Mimics the OpenGL glVertex() "family of functions".
virtual void	vertex (const Vec3 &vert)
	Mimics the OpenGL glVertex() "family of functions".
virtual void	vertex (const Vec4 &vert)
	Mimics the OpenGL glVertex() "family of functions".
virtual void	vertex (float x, float y)
	Mimics the OpenGL glVertex() "family of functions".
virtual void	vertex (float x, float y, float z)
	Mimics the OpenGL glVertex() "family of functions".
virtual void	vertex (float x, float y, float z, float w)
	Mimics the OpenGL glVertex() "family of functions".
virtual void	end ()
	Mimics the OpenGL glEnd() function.
Protected Attributes
unsigned int	_vertexArraySize
const Vec3 *	_vertexArrayPtr
GLenum	_modeCache
std::vector< Vec3 >	_vertexCache
bool	_treatVertexDataAsTemporary

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Detailed Description

template<class T>
class osg::TriangleFunctor< T >

Provides access to the triangles that compose an osg::Drawable.

If the Drawable is not composed of triangles, the TriangleFunctor will convert the primitives to triangles whenever possible.

Notice that TriangleFunctor is a class template, and that it inherits from its template parameter T. This template parameter must implement T::operator() (const osg::Vec3 v1, const osg::Vec3 v2, const osg::Vec3 v3, bool treatVertexDataAsTemporary), which will be called for every triangle when the functor is applied to a Drawable. Parameters v1, v2, and v3 are the triangle vertices. The fourth parameter, treatVertexDataAsTemporary, indicates whether these vertices are coming from a "real" vertex array, or from a temporary vertex array, created by the TriangleFunctor from some other geometry representation.

See also:

PrimitiveFunctor for general usage hints.

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Constructor & Destructor Documentation

template<class T>

osg::TriangleFunctor< T >::TriangleFunctor

(

)

[inline]

template<class T>

virtual osg::TriangleFunctor< T >::~TriangleFunctor

(

)

[inline, virtual]

---

Member Function Documentation

template<class T>

void osg::TriangleFunctor< T >::setTreatVertexDataAsTemporary

(

bool

treatVertexDataAsTemporary

)

[inline]

template<class T>

bool osg::TriangleFunctor< T >::getTreatVertexDataAsTemporary

(

)

const [inline]

template<class T>

virtual void osg::TriangleFunctor< T >::setVertexArray	(	unsigned	count,
		const Vec2 *	vertices
	)			[inline, virtual]

Sets the array of vertices used to describe the primitives.

Somehow mimics the OpenGL glVertexPointer() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::setVertexArray	(	unsigned int	count,
		const Vec3 *	vertices
	)			[inline, virtual]

Sets the array of vertices used to describe the primitives.

Somehow mimics the OpenGL glVertexPointer() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::setVertexArray	(	unsigned	count,
		const Vec4 *	vertices
	)			[inline, virtual]

Sets the array of vertices used to describe the primitives.

Somehow mimics the OpenGL glVertexPointer() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::drawArrays	(	GLenum	mode,
		GLint	first,
		GLsizei	count
	)			[inline, virtual]

Mimics the OpenGL glDrawArrays() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::drawElements	(	GLenum	mode,
		GLsizei	count,
		const GLubyte *	indices
	)			[inline, virtual]

Mimics the OpenGL glDrawElements() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::drawElements	(	GLenum	mode,
		GLsizei	count,
		const GLushort *	indices
	)			[inline, virtual]

Mimics the OpenGL glDrawElements() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::drawElements	(	GLenum	mode,
		GLsizei	count,
		const GLuint *	indices
	)			[inline, virtual]

Mimics the OpenGL glDrawElements() function.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::begin

(

GLenum

mode

)

[inline, virtual]

Note: begin(.

.),vertex(..) & end() are convenience methods for adapting non vertex array primitives to vertex array based primitives. This is done to simplify the implementation of primtive functor subclasses - users only need override drawArray and drawElements.

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::vertex

(

const Vec2 &

vert

)

[inline, virtual]

Mimics the OpenGL glVertex() "family of functions".

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::vertex

(

const Vec3 &

vert

)

[inline, virtual]

Mimics the OpenGL glVertex() "family of functions".

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::vertex

(

const Vec4 &

vert

)

[inline, virtual]

Mimics the OpenGL glVertex() "family of functions".

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::vertex	(	float	x,
		float	y
	)			[inline, virtual]

Mimics the OpenGL glVertex() "family of functions".

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::vertex	(	float	x,
		float	y,
		float	z
	)			[inline, virtual]

Mimics the OpenGL glVertex() "family of functions".

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::vertex	(	float	x,
		float	y,
		float	z,
		float	w
	)			[inline, virtual]

Mimics the OpenGL glVertex() "family of functions".

Implements osg::PrimitiveFunctor.

template<class T>

virtual void osg::TriangleFunctor< T >::end

(

)

[inline, virtual]

Mimics the OpenGL glEnd() function.

Implements osg::PrimitiveFunctor.

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Member Data Documentation

template<class T>

unsigned int osg::TriangleFunctor< T >::_vertexArraySize [protected]

template<class T>

const Vec3* osg::TriangleFunctor< T >::_vertexArrayPtr [protected]

template<class T>

GLenum osg::TriangleFunctor< T >::_modeCache [protected]

template<class T>

std::vector<Vec3> osg::TriangleFunctor< T >::_vertexCache [protected]

template<class T>

bool osg::TriangleFunctor< T >::_treatVertexDataAsTemporary [protected]

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

• TriangleFunctor

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