Factory for constructing TopologyRefiners from specific mesh classes. More...

#include <topologyRefinerFactory.h>

Classes
struct	Options
	Options related to the construction of each TopologyRefiner. More...

Static Public Member Functions
static TopologyRefiner *	Create (MESH const &mesh, Options options=Options())
	Instantiates a TopologyRefiner from client-provided topological representation. More...

static TopologyRefiner *	Create (TopologyRefiner const &baseLevel)
	Instantiates a TopologyRefiner from the base level of an existing instance. More...

Static Protected Member Functions
Methods to be provided to complete assembly of the TopologyRefiner
These methods are to be specialized to implement all details specific to class MESH required to convert MESH data to TopologyRefiner. Note that some of these must be specialized in order to complete construction while some are optional. There are two minimal construction requirements (to specify the size and content of all topology relations) and three optional (to specify feature tags, face-varying data, and runtime validation and error reporting). See comments in the generic stubs, the factory for Far::TopologyDescriptor or the tutorials for more details on writing these.
static bool	resizeComponentTopology (TopologyRefiner &newRefiner, MESH const &mesh)
	Specify the number of vertices, faces, face-vertices, etc. More...

static bool	assignComponentTopology (TopologyRefiner &newRefiner, MESH const &mesh)
	Specify the relationships between vertices, faces, etc. ie the face-vertices, vertex-faces, edge-vertices, etc. More...

static bool	assignComponentTags (TopologyRefiner &newRefiner, MESH const &mesh)
	(Optional) Specify edge or vertex sharpness or face holes More...

static bool	assignFaceVaryingTopology (TopologyRefiner &newRefiner, MESH const &mesh)
	(Optional) Specify face-varying data per face More...

static void	reportInvalidTopology (TopologyError errCode, char const *msg, MESH const &mesh)
	(Optional) Control run-time topology validation and error reporting More...

Base level assembly methods to be used within resizeComponentTopology()
These methods specify sizes of various quantities, e.g. the number of vertices, faces, face-vertices, etc. The number of the primary components (vertices, faces and edges) should be specified prior to anything else that references them (e.g. we need to know the number of faces before specifying the vertices for that face. If a full boundary representation with all neighborhood information is not available, e.g. faces and vertices are available but not edges, only the face-vertices should be specified. The remaining topological relationships will be constructed later in the assembly (though at greater cost than if specified directly). The sizes for topological relationships between individual components should be specified in order, i.e. the number of face-vertices for each successive face.
static void	setNumBaseVertices (TopologyRefiner &newRefiner, int count)
	Specify the number of vertices to be accommodated. More...

static void	setNumBaseFaces (TopologyRefiner &newRefiner, int count)
	Specify the number of faces to be accommodated. More...

static void	setNumBaseEdges (TopologyRefiner &newRefiner, int count)
	Specify the number of edges to be accommodated. More...

static void	setNumBaseFaceVertices (TopologyRefiner &newRefiner, Index f, int count)
	Specify the number of vertices incident each face. More...

static void	setNumBaseEdgeFaces (TopologyRefiner &newRefiner, Index e, int count)
	Specify the number of faces incident each edge. More...

static void	setNumBaseVertexFaces (TopologyRefiner &newRefiner, Index v, int count)
	Specify the number of faces incident each vertex. More...

static void	setNumBaseVertexEdges (TopologyRefiner &newRefiner, Index v, int count)
	Specify the number of edges incident each vertex. More...

static int	getNumBaseVertices (TopologyRefiner const &newRefiner)
	Specify the number of vertices to be accommodated. More...

static int	getNumBaseFaces (TopologyRefiner const &newRefiner)
	Specify the number of vertices to be accommodated. More...

static int	getNumBaseEdges (TopologyRefiner const &newRefiner)
	Specify the number of vertices to be accommodated. More...

Base level assembly methods to be used within assignComponentTopology()
These methods populate relationships between components – in much the same manner as they are inspected once the TopologyRefiner is completed. An array of fixed size is returned from these methods and its entries are to be populated with the appropriate indices for its neighbors. At minimum, the vertices for each face must be specified. As noted previously, the remaining relationships will be constructed as needed. The ordering of entries in these arrays is important – they are expected to be ordered counter-clockwise for a right-hand orientation. Non-manifold components must be explicitly tagged as such and they do not require the ordering expected of manifold components. Special consideration must also be given to certain non-manifold situations, e.g. the same edge cannot appear twice in a face, and a degenerate edge (same vertex at both ends) can only have one incident face. Such considerations are typically achievable by creating multiple instances of an edge. So while there will always be a one-to-one correspondence between vertices and faces, the same is not guaranteed of edges in certain non-manifold circumstances.
static IndexArray	getBaseFaceVertices (TopologyRefiner &newRefiner, Index f)
	Assign the vertices incident each face. More...

static IndexArray	getBaseFaceEdges (TopologyRefiner &newRefiner, Index f)
	Assign the edges incident each face. More...

static IndexArray	getBaseEdgeVertices (TopologyRefiner &newRefiner, Index e)
	Assign the vertices incident each edge. More...

static IndexArray	getBaseEdgeFaces (TopologyRefiner &newRefiner, Index e)
	Assign the faces incident each edge. More...

static IndexArray	getBaseVertexFaces (TopologyRefiner &newRefiner, Index v)
	Assign the faces incident each vertex. More...

static IndexArray	getBaseVertexEdges (TopologyRefiner &newRefiner, Index v)
	Assign the edges incident each vertex. More...

static LocalIndexArray	getBaseVertexFaceLocalIndices (TopologyRefiner &newRefiner, Index v)
	Assign the local indices of a vertex within each of its incident faces. More...

static LocalIndexArray	getBaseVertexEdgeLocalIndices (TopologyRefiner &newRefiner, Index v)
	Assign the local indices of a vertex within each of its incident edges. More...

static LocalIndexArray	getBaseEdgeFaceLocalIndices (TopologyRefiner &newRefiner, Index e)
	Assign the local indices of an edge within each of its incident faces. More...

static void	populateBaseLocalIndices (TopologyRefiner &newRefiner)
	Determine all local indices by inspection (only for pure manifold meshes) More...

static void	setBaseEdgeNonManifold (TopologyRefiner &newRefiner, Index e, bool b)
	Tag an edge as non-manifold. More...

static void	setBaseVertexNonManifold (TopologyRefiner &newRefiner, Index v, bool b)
	Tag a vertex as non-manifold. More...

Base level assembly methods to be used within assignComponentTags()
These methods are used to assign edge or vertex sharpness, for tagging faces as holes, etc. Unlike topological assignment, only those components that possess a feature of interest need be explicitly assigned. Since topological construction is largely complete by this point, a method is available to identify an edge for sharpness assignment given a pair of vertices.
static Index	findBaseEdge (TopologyRefiner const &newRefiner, Index v0, Index v1)
	Identify an edge to be assigned a sharpness value given a vertex pair. More...

static void	setBaseEdgeSharpness (TopologyRefiner &newRefiner, Index e, float sharpness)
	Assign a sharpness value to a given edge. More...

static void	setBaseVertexSharpness (TopologyRefiner &newRefiner, Index v, float sharpness)
	Assign a sharpness value to a given vertex. More...

static void	setBaseFaceHole (TopologyRefiner &newRefiner, Index f, bool isHole)
	Tag a face as a hole. More...

Base level assembly methods to be used within assignFaceVaryingTopology()
Face-varying data is assigned to faces in much the same way as face-vertex topology is assigned – indices for face-varying values are assigned to the corners of each face just as indices for vertices were assigned. Independent sets of face-varying data are stored in channels. The identifier of each channel (an integer) is expected whenever referring to face-varying data in any form.
static int	createBaseFVarChannel (TopologyRefiner &newRefiner, int numValues)
	Create a new face-varying channel with the given number of values. More...

static int	createBaseFVarChannel (TopologyRefiner &newRefiner, int numValues, Sdc::Options const &fvarOptions)
	Create a new face-varying channel with the given number of values and independent interpolation options. More...

static IndexArray	getBaseFaceFVarValues (TopologyRefiner &newRefiner, Index face, int channel=0)
	Assign the face-varying values for the corners of each face. More...

Detailed Description

template<class MESH>
class OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >

Factory for constructing TopologyRefiners from specific mesh classes.

TopologyRefinerFactory<MESH> is the factory class template to convert an instance of TopologyRefiner from an arbitrary mesh class. While a class template, the implementation is not (cannot) be complete, so specialization of a few methods is required (it is a stateless factory, so no instance and only static methods).

This template provides both the interface and high level assembly for the construction of the TopologyRefiner instance. The high level construction executes a specific set of operations to convert the client's MESH into TopologyRefiner. This set of operations combines methods independent of MESH from the base class with those specialized here for class MESH.

Inheritance diagram for OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >:

Member Function Documentation

template<class MESH >

bool OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::assignComponentTags	(	TopologyRefiner &	newRefiner,
		MESH const &	mesh
	)

staticprotected

(Optional) Specify edge or vertex sharpness or face holes

template<class MESH >

bool OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::assignComponentTopology	(	TopologyRefiner &	newRefiner,
		MESH const &	mesh
	)

staticprotected

Specify the relationships between vertices, faces, etc. ie the face-vertices, vertex-faces, edge-vertices, etc.

template<class MESH >

bool OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::assignFaceVaryingTopology	(	TopologyRefiner &	newRefiner,
		MESH const &	mesh
	)

staticprotected

(Optional) Specify face-varying data per face

template<class MESH >

TopologyRefiner * OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::Create	(	MESH const &	mesh,
		Options	options = `Options()`
	)

static

Instantiates a TopologyRefiner from client-provided topological representation.

If only the face-vertices topological relationships are specified with this factory, edge relationships have to be inferred, which requires additional processing. If the client topological rep can provide this information, it is highly recommended to do so.

Parameters

mesh	Client's topological representation (or a converter)
options	Options controlling the creation of the TopologyRefiner

Returns: A new instance of TopologyRefiner or 0 for failure

References OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::Options::schemeOptions, and OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::Options::schemeType.

template<class MESH >

TopologyRefiner * OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::Create ( TopologyRefiner const & baseLevel )

static

Instantiates a TopologyRefiner from the base level of an existing instance.

This allows lightweight copies of the same topology to be refined differently for each new instance. As with other classes that refer to an existing TopologyRefiner, it must generally exist for the entire lifetime of the new instance. In this case, the base level of the original instance must be preserved.

Parameters

baseLevel An existing TopologyRefiner to share base level.

Returns: A new instance of TopologyRefiner or 0 for failure

template<class MESH >

int OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::createBaseFVarChannel	(	TopologyRefiner &	newRefiner,
		int	numValues
	)

inlinestaticprotected

Create a new face-varying channel with the given number of values.

template<class MESH >

int OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::createBaseFVarChannel	(	TopologyRefiner &	newRefiner,
		int	numValues,
		Sdc::Options const &	fvarOptions
	)

inlinestaticprotected

Create a new face-varying channel with the given number of values and independent interpolation options.

References OpenSubdiv::v3_4_3::Sdc::Options::GetFVarLinearInterpolation(), and OpenSubdiv::v3_4_3::Sdc::Options::SetFVarLinearInterpolation().

template<class MESH >

Index OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::findBaseEdge	(	TopologyRefiner const &	newRefiner,
		Index	v0,
		Index	v1
	)

inlinestaticprotected

Identify an edge to be assigned a sharpness value given a vertex pair.

template<class MESH >

LocalIndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseEdgeFaceLocalIndices	(	TopologyRefiner &	newRefiner,
		Index	e
	)

inlinestaticprotected

Assign the local indices of an edge within each of its incident faces.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseEdgeFaces	(	TopologyRefiner &	newRefiner,
		Index	e
	)

inlinestaticprotected

Assign the faces incident each edge.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseEdgeVertices	(	TopologyRefiner &	newRefiner,
		Index	e
	)

inlinestaticprotected

Assign the vertices incident each edge.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseFaceEdges	(	TopologyRefiner &	newRefiner,
		Index	f
	)

inlinestaticprotected

Assign the edges incident each face.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseFaceFVarValues	(	TopologyRefiner &	newRefiner,
		Index	face,
		int	channel = `0`
	)

inlinestaticprotected

Assign the face-varying values for the corners of each face.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseFaceVertices	(	TopologyRefiner &	newRefiner,
		Index	f
	)

inlinestaticprotected

Assign the vertices incident each face.

template<class MESH >

LocalIndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseVertexEdgeLocalIndices	(	TopologyRefiner &	newRefiner,
		Index	v
	)

inlinestaticprotected

Assign the local indices of a vertex within each of its incident edges.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseVertexEdges	(	TopologyRefiner &	newRefiner,
		Index	v
	)

inlinestaticprotected

Assign the edges incident each vertex.

template<class MESH >

LocalIndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseVertexFaceLocalIndices	(	TopologyRefiner &	newRefiner,
		Index	v
	)

inlinestaticprotected

Assign the local indices of a vertex within each of its incident faces.

template<class MESH >

IndexArray OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getBaseVertexFaces	(	TopologyRefiner &	newRefiner,
		Index	v
	)

inlinestaticprotected

Assign the faces incident each vertex.

template<class MESH >

int OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getNumBaseEdges ( TopologyRefiner const & newRefiner )

inlinestaticprotected

Specify the number of vertices to be accommodated.

template<class MESH >

int OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getNumBaseFaces ( TopologyRefiner const & newRefiner )

inlinestaticprotected

Specify the number of vertices to be accommodated.

template<class MESH >

int OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::getNumBaseVertices ( TopologyRefiner const & newRefiner )

inlinestaticprotected

Specify the number of vertices to be accommodated.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::populateBaseLocalIndices ( TopologyRefiner & newRefiner )

inlinestaticprotected

Determine all local indices by inspection (only for pure manifold meshes)

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::reportInvalidTopology	(	TopologyError	errCode,
		char const *	msg,
		MESH const &	mesh
	)

staticprotected

(Optional) Control run-time topology validation and error reporting

template<class MESH >

bool OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::resizeComponentTopology	(	TopologyRefiner &	newRefiner,
		MESH const &	mesh
	)

staticprotected

Specify the number of vertices, faces, face-vertices, etc.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setBaseEdgeNonManifold	(	TopologyRefiner &	newRefiner,
		Index	e,
		bool	b
	)

inlinestaticprotected

Tag an edge as non-manifold.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setBaseEdgeSharpness	(	TopologyRefiner &	newRefiner,
		Index	e,
		float	sharpness
	)

inlinestaticprotected

Assign a sharpness value to a given edge.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setBaseFaceHole	(	TopologyRefiner &	newRefiner,
		Index	f,
		bool	isHole
	)

inlinestaticprotected

Tag a face as a hole.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setBaseVertexNonManifold	(	TopologyRefiner &	newRefiner,
		Index	v,
		bool	b
	)

inlinestaticprotected

Tag a vertex as non-manifold.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setBaseVertexSharpness	(	TopologyRefiner &	newRefiner,
		Index	v,
		float	sharpness
	)

inlinestaticprotected

Assign a sharpness value to a given vertex.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseEdgeFaces	(	TopologyRefiner &	newRefiner,
		Index	e,
		int	count
	)

inlinestaticprotected

Specify the number of faces incident each edge.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseEdges	(	TopologyRefiner &	newRefiner,
		int	count
	)

inlinestaticprotected

Specify the number of edges to be accommodated.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseFaces	(	TopologyRefiner &	newRefiner,
		int	count
	)

inlinestaticprotected

Specify the number of faces to be accommodated.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseFaceVertices	(	TopologyRefiner &	newRefiner,
		Index	f,
		int	count
	)

inlinestaticprotected

Specify the number of vertices incident each face.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseVertexEdges	(	TopologyRefiner &	newRefiner,
		Index	v,
		int	count
	)

inlinestaticprotected

Specify the number of edges incident each vertex.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseVertexFaces	(	TopologyRefiner &	newRefiner,
		Index	v,
		int	count
	)

inlinestaticprotected

Specify the number of faces incident each vertex.

template<class MESH >

void OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >::setNumBaseVertices	(	TopologyRefiner &	newRefiner,
		int	count
	)

inlinestaticprotected

Specify the number of vertices to be accommodated.

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

3d-coat/3D-CoatV4/3D-Coat/OpenSubdiv/OpenSubdiv/far/topologyRefiner.h
3d-coat/3D-CoatV4/3D-Coat/OpenSubdiv/OpenSubdiv/far/topologyRefinerFactory.h

Classes

Static Public Member Functions

Static Protected Member Functions

Detailed Description

template<class MESH> class OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >

Member Function Documentation

template<class MESH>
class OpenSubdiv::v3_4_3::Far::TopologyRefinerFactory< MESH >