Subdivider stub class to implement the Catmull-Clarke subdivision algorithm. More...

Inherits Assimp::Subdivider.

Classes
struct	Edge
	Intermediate description of an edge between two corners of a polygon. More...

Public Types
typedef std::map< uint64_t, Edge >	EdgeMap

typedef std::vector< unsigned int >	UIntVector

Public Types inherited from Assimp::Subdivider
enum	Algorithm { CATMULL_CLARKE = 0x1 }
	Enumerates all supported subvidision algorithms. More...

Public Member Functions
void	Subdivide (aiMesh smesh, size_t nmesh, aiMesh out, unsigned int num, bool discard_input)
	Subdivide multiple meshes using the selected algorithm. More...

void	Subdivide (aiMesh mesh, aiMesh &out, unsigned int num, bool discard_input)
	Subdivide a mesh using the selected algorithm. More...

Public Member Functions inherited from Assimp::Subdivider
virtual	~Subdivider ()

Additional Inherited Members
Static Public Member Functions inherited from Assimp::Subdivider
static Subdivider *	Create (Algorithm algo)
	Create a subdivider of a specific type. More...

Detailed Description

Subdivider stub class to implement the Catmull-Clarke subdivision algorithm.

The implementation is basing on recursive refinement. Directly evaluating the result is also possible and much quicker, but it depends on lengthy matrix lookup tables.

Member Typedef Documentation

◆ EdgeMap

typedef std::map<uint64_t,Edge> CatmullClarkSubdivider::EdgeMap

◆ UIntVector

typedef std::vector<unsigned int> CatmullClarkSubdivider::UIntVector

Member Function Documentation

◆ Subdivide() [1/2]

void CatmullClarkSubdivider::Subdivide	(	aiMesh **	smesh,
		size_t	nmesh,
		aiMesh **	out,
		unsigned int	num,
		bool	discard_input
	)

virtual

Subdivide multiple meshes using the selected algorithm.

This avoids erroneous smoothing on objects consisting of multiple per-material meshes. Usually, most 3d modellers smooth on a per-object base, regardless the materials assigned to the meshes.

Parameters

smesh	Array of meshes to be subdivided. Must be in verbose format.
nmesh	Number of meshes in smesh.
out	Receives the output meshes. The array must be sufficiently large (at least `nmesh` elements) and may not overlap the input array. Output meshes map one-to-one to their corresponding input meshes. The meshes are allocated by the function.
discard_input	If true is passed, input meshes are deleted after the subdivision is complete. This can improve performance because it allows the optimization of reusing existing meshes for intermediate results.
num	Number of subdivisions to perform.

Precondition: nmesh != 0, smesh and out may not overlap

Implements Assimp::Subdivider.

◆ Subdivide() [2/2]

void CatmullClarkSubdivider::Subdivide	(	aiMesh *	mesh,
		aiMesh *&	out,
		unsigned int	num,
		bool	discard_input
	)

virtual

Subdivide a mesh using the selected algorithm.

Parameters

mesh	First mesh to be subdivided. Must be in verbose format.
out	Receives the output mesh, allocated by me.
num	Number of subdivisions to perform.
discard_input	If true is passed, the input mesh is deleted after the subdivision is complete. This can improve performance because it allows the optimization to reuse the existing mesh for intermediate results.

Precondition: out!=mesh

Implements Assimp::Subdivider.

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

Subdivision.cpp

Classes

Public Types

Public Member Functions