mi::shader_v3::Subdivision34 Class Reference

Subdivision34 class. More...

#include <shader_sds34.h>

List of all members.

Public Types
enum	Space_type
	space type. A vector space contains 3d positions, arbitrary dimension scalar textures or multiple 3d motion vectors.
Public Member Functions
virtual miUint	get_no_spaces () const =0
	return the number of vector spaces
virtual miUint	get_dimension (miUint space) const =0
	return the dimension of a given space
virtual Space_type	get_space_type (miUint space) const =0
	return the type of a given space
virtual miUint	get_no_vectors (miUint space) const =0
	return the number of vectors of a given space
virtual const miScalar *	get_vector (miUint space, miUint which) const =0
	vector access
virtual miUint	get_no_triangles () const =0
	return the number of triangles for the subdiv surface
virtual miUint	get_no_quads () const =0
	return the number of quads for the subdiv surface
virtual const Face	get_triangle (miUint space, miUint which) const =0
	triangle access
virtual const Face	get_quad (miUint space, miUint which) const =0
	quad access
virtual bool	get_triangle_derivatives (miUint face, miUint which, miVector derivs[2])=0
	triangle derivatives
virtual bool	get_quad_derivatives (miUint face, miUint which, miVector derivs[2])=0
	quad derivatives
Classes
struct	Face
	face data structure for triangles and quads m_vertices contains either 3 or 4 indices into the vector spaces. use get_vector to access the positions, textures etc using the vertex indices. m_material is the material tag for the given face. More...

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Detailed Description

Subdivision34 class.

This class provides access to the mixed triangle-quad subdivision class in mental ray, which has the ccmesh front-end in the mental ray API. ccmesh creates a database element containing only triangles and quads, either directly from the source geometry or with a single Catmull-Clark subdivision step in case of polygons other than triangles or quads.

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Member Function Documentation

virtual miUint mi::shader_v3::Subdivision34::get_dimension

(

miUint

space

)

const [pure virtual]

return the dimension of a given space

Parameters:

space

is the space index

virtual Space_type mi::shader_v3::Subdivision34::get_space_type

(

miUint

space

)

const [pure virtual]

return the type of a given space

Parameters:

space

is the space index

virtual miUint mi::shader_v3::Subdivision34::get_no_vectors

(

miUint

space

)

const [pure virtual]

return the number of vectors of a given space

Parameters:

space

is the space index

virtual const miScalar* mi::shader_v3::Subdivision34::get_vector	(	miUint	space,
		miUint	which
	)			const [pure virtual]

vector access

Parameters:

	space	is the space index
	which	is the vector index within the space

Returns:

the address of the first scalar of the n-dimensional vector is returned. the length is equal to the dimension as returned by get_dimension.

virtual const Face mi::shader_v3::Subdivision34::get_triangle	(	miUint	space,
		miUint	which
	)			const [pure virtual]

triangle access

Parameters:

	space	is the space index
	which	is the triangle index

Returns:

the triangle data is returned

virtual const Face mi::shader_v3::Subdivision34::get_quad	(	miUint	space,
		miUint	which
	)			const [pure virtual]

quad access

Parameters:

	space	is the space index
	which	is the quad index

Returns:

the quad data is returned

virtual bool mi::shader_v3::Subdivision34::get_triangle_derivatives	(	miUint	face,
		miUint	which,
		miVector	derivs[2]
	)			[pure virtual]

triangle derivatives

Parameters:

	face	is the triangle index
	which	is the vertex index, 0-2

Return values:

derivs

The du/dv result vectors

Returns:

du, dv are returned in derivs

virtual bool mi::shader_v3::Subdivision34::get_quad_derivatives	(	miUint	face,
		miUint	which,
		miVector	derivs[2]
	)			[pure virtual]

quad derivatives

Parameters:

	face	is the quad index
	which	is the vertex index, 0-3

Return values:

derivs

The du/dv result vectors

Returns:

du, dv are returned in derivs