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688 lines
29 KiB
C++
688 lines
29 KiB
C++
//
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// Copyright 2014 DreamWorks Animation LLC.
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#ifndef OPENSUBDIV3_FAR_TOPOLOGY_REFINER_FACTORY_H
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#define OPENSUBDIV3_FAR_TOPOLOGY_REFINER_FACTORY_H
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#include "../version.h"
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#include "../far/topologyRefiner.h"
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#include "../far/error.h"
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#include <cassert>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Far {
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///\brief Private base class of Factories for constructing TopologyRefiners
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///
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/// TopologyRefinerFactoryBase is the base class for subclasses that are intended to
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/// construct TopologyRefiners directly from meshes in their native representations.
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/// The subclasses are parameterized by the mesh type \<class MESH\> and are expected
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/// to inherit the details related to assembly and validation provided here that are
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/// independent of the subclass' mesh type.
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//
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class TopologyRefinerFactoryBase {
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protected:
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//
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// Protected methods invoked by the subclass template to verify and process each
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// stage of construction implemented by the subclass:
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//
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typedef Vtr::internal::Level::ValidationCallback TopologyCallback;
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static bool prepareComponentTopologySizing(TopologyRefiner& refiner);
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static bool prepareComponentTopologyAssignment(TopologyRefiner& refiner, bool fullValidation,
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TopologyCallback callback, void const * callbackData);
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static bool prepareComponentTagsAndSharpness(TopologyRefiner& refiner);
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static bool prepareFaceVaryingChannels(TopologyRefiner& refiner);
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};
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///\brief Factory for constructing TopologyRefiners from specific mesh classes.
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///
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/// TopologyRefinerFactory<MESH> is the factory class template to convert an instance of
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/// TopologyRefiner from an arbitrary mesh class. While a class template, the implementation
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/// is not (cannot) be complete, so specialization of a few methods is required (it is a
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/// stateless factory, so no instance and only static methods).
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///
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/// This template provides both the interface and high level assembly for the construction
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/// of the TopologyRefiner instance. The high level construction executes a specific set
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/// of operations to convert the client's MESH into TopologyRefiner. This set of operations
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/// combines methods independent of MESH from the base class with those specialized here for
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/// class MESH.
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///
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template <class MESH>
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class TopologyRefinerFactory : public TopologyRefinerFactoryBase {
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public:
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/// \brief Options related to the construction of each TopologyRefiner.
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///
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struct Options {
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Options(Sdc::SchemeType sdcType = Sdc::SCHEME_CATMARK, Sdc::Options sdcOptions = Sdc::Options()) :
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schemeType(sdcType),
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schemeOptions(sdcOptions),
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validateFullTopology(false) { }
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Sdc::SchemeType schemeType; ///< The subdivision scheme type identifier
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Sdc::Options schemeOptions; ///< The full set of options for the scheme,
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///< e.g. boundary interpolation rules...
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unsigned int validateFullTopology : 1; ///< Apply more extensive validation of
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///< the constructed topology -- intended
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///< for debugging.
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};
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/// \brief Instantiates a TopologyRefiner from client-provided topological
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/// representation.
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///
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/// If only the face-vertices topological relationships are specified
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/// with this factory, edge relationships have to be inferred, which
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/// requires additional processing. If the client topological rep can
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/// provide this information, it is highly recommended to do so.
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///
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/// @param mesh Client's topological representation (or a converter)
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//
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/// @param options Options controlling the creation of the TopologyRefiner
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///
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/// @return A new instance of TopologyRefiner or 0 for failure
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///
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static TopologyRefiner* Create(MESH const& mesh, Options options = Options());
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protected:
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typedef Vtr::internal::Level::TopologyError TopologyError;
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//@{
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/// @name Methods to be provided to complete assembly of the TopologyRefiner
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///
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///
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/// These methods are to be specialized to implement all details specific to
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/// class MESH required to convert MESH data to TopologyRefiner. Note that
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/// some of these *must* be specialized in order to complete construction while
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/// some are optional.
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///
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/// There are two minimal construction requirements (to specify the size and
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/// content of all topology relations) and three optional (to specify feature
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/// tags, face-varying data, and runtime validation and error reporting).
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///
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/// See comments in the generic stubs, the factory for Far::TopologyDescriptor
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/// or the tutorials for more details on writing these.
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///
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/// \brief Specify the number of vertices, faces, face-vertices, etc.
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static bool resizeComponentTopology(TopologyRefiner& newRefiner, MESH const& mesh);
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/// \brief Specify the relationships between vertices, faces, etc. ie the
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/// face-vertices, vertex-faces, edge-vertices, etc.
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static bool assignComponentTopology(TopologyRefiner& newRefiner, MESH const& mesh);
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/// \brief (Optional) Specify edge or vertex sharpness or face holes
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static bool assignComponentTags(TopologyRefiner& newRefiner, MESH const& mesh);
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/// \brief (Optional) Specify face-varying data per face
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static bool assignFaceVaryingTopology(TopologyRefiner& newRefiner, MESH const& mesh);
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/// \brief (Optional) Control run-time topology validation and error reporting
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static void reportInvalidTopology(TopologyError errCode, char const * msg, MESH const& mesh);
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//@}
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protected:
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//@{
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/// @name Base level assembly methods to be used within resizeComponentTopology()
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///
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/// \brief These methods specify sizes of various quantities, e.g. the number of
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/// vertices, faces, face-vertices, etc. The number of the primary components
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/// (vertices, faces and edges) should be specified prior to anything else that
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/// references them (e.g. we need to know the number of faces before specifying
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/// the vertices for that face.
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///
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/// If a full boundary representation with all neighborhood information is not
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/// available, e.g. faces and vertices are available but not edges, only the
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/// face-vertices should be specified. The remaining topological relationships
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/// will be constructed later in the assembly (though at greater cost than if
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/// specified directly).
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///
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/// The sizes for topological relationships between individual components should be
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/// specified in order, i.e. the number of face-vertices for each successive face.
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///
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/// \brief Specify the number of vertices to be accommodated
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static void setNumBaseVertices(TopologyRefiner & newRefiner, int count);
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/// \brief Specify the number of faces to be accommodated
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static void setNumBaseFaces(TopologyRefiner & newRefiner, int count);
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/// \brief Specify the number of edges to be accommodated
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static void setNumBaseEdges(TopologyRefiner & newRefiner, int count);
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/// \brief Specify the number of vertices incident each face
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static void setNumBaseFaceVertices(TopologyRefiner & newRefiner, Index f, int count);
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/// \brief Specify the number of faces incident each edge
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static void setNumBaseEdgeFaces(TopologyRefiner & newRefiner, Index e, int count);
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/// \brief Specify the number of faces incident each vertex
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static void setNumBaseVertexFaces(TopologyRefiner & newRefiner, Index v, int count);
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/// \brief Specify the number of edges incident each vertex
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static void setNumBaseVertexEdges(TopologyRefiner & newRefiner, Index v, int count);
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static int getNumBaseVertices(TopologyRefiner const & newRefiner);
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static int getNumBaseFaces(TopologyRefiner const & newRefiner);
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static int getNumBaseEdges(TopologyRefiner const & newRefiner);
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//@}
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//@{
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/// @name Base level assembly methods to be used within assignComponentTopology()
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///
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/// \brief These methods populate relationships between components -- in much the
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/// same manner as they are inspected once the TopologyRefiner is completed.
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///
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/// An array of fixed size is returned from these methods and its entries are to be
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/// populated with the appropriate indices for its neighbors. At minimum, the
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/// vertices for each face must be specified. As noted previously, the remaining
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/// relationships will be constructed as needed.
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///
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/// The ordering of entries in these arrays is important -- they are expected to
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/// be ordered counter-clockwise for a right-hand orientation.
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///
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/// Non-manifold components must be explicitly tagged as such and they do not
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/// require the ordering expected of manifold components. Special consideration
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/// must also be given to certain non-manifold situations, e.g. the same edge
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/// cannot appear twice in a face, and a degenerate edge (same vertex at both
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/// ends) can only have one incident face. Such considerations are typically
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/// achievable by creating multiple instances of an edge. So while there will
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/// always be a one-to-one correspondence between vertices and faces, the same
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/// is not guaranteed of edges in certain non-manifold circumstances.
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///
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/// \brief Assign the vertices incident each face
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static IndexArray getBaseFaceVertices(TopologyRefiner & newRefiner, Index f);
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/// \brief Assign the edges incident each face
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static IndexArray getBaseFaceEdges(TopologyRefiner & newRefiner, Index f);
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/// \brief Assign the vertices incident each edge
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static IndexArray getBaseEdgeVertices(TopologyRefiner & newRefiner, Index e);
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/// \brief Assign the faces incident each edge
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static IndexArray getBaseEdgeFaces(TopologyRefiner & newRefiner, Index e);
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/// \brief Assign the faces incident each vertex
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static IndexArray getBaseVertexFaces(TopologyRefiner & newRefiner, Index v);
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/// \brief Assign the edges incident each vertex
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static IndexArray getBaseVertexEdges(TopologyRefiner & newRefiner, Index v);
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/// \brief Assign the local indices of a vertex within each of its incident faces
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static LocalIndexArray getBaseVertexFaceLocalIndices(TopologyRefiner & newRefiner, Index v);
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/// \brief Assign the local indices of a vertex within each of its incident edges
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static LocalIndexArray getBaseVertexEdgeLocalIndices(TopologyRefiner & newRefiner, Index v);
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/// \brief Assign the local indices of an edge within each of its incident faces
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static LocalIndexArray getBaseEdgeFaceLocalIndices(TopologyRefiner & newRefiner, Index e);
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/// \brief Determine all local indices by inspection (only for pure manifold meshes)
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static void populateBaseLocalIndices(TopologyRefiner & newRefiner);
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/// \brief Tag an edge as non-manifold
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static void setBaseEdgeNonManifold(TopologyRefiner & newRefiner, Index e, bool b);
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/// \brief Tag a vertex as non-manifold
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static void setBaseVertexNonManifold(TopologyRefiner & newRefiner, Index v, bool b);
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//@}
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//@{
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/// @name Base level assembly methods to be used within assignComponentTags()
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///
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/// These methods are used to assign edge or vertex sharpness, for tagging faces
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/// as holes, etc. Unlike topological assignment, only those components that
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/// possess a feature of interest need be explicitly assigned.
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///
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/// Since topological construction is largely complete by this point, a method is
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/// available to identify an edge for sharpness assignment given a pair of vertices.
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///
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/// \brief Identify an edge to be assigned a sharpness value given a vertex pair
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static Index findBaseEdge(TopologyRefiner const & newRefiner, Index v0, Index v1);
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/// \brief Assign a sharpness value to a given edge
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static void setBaseEdgeSharpness(TopologyRefiner & newRefiner, Index e, float sharpness);
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/// \brief Assign a sharpness value to a given vertex
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static void setBaseVertexSharpness(TopologyRefiner & newRefiner, Index v, float sharpness);
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/// \brief Tag a face as a hole
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static void setBaseFaceHole(TopologyRefiner & newRefiner, Index f, bool isHole);
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//@}
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//@{
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/// @name Base level assembly methods to be used within assignFaceVaryingTopology()
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///
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/// Face-varying data is assigned to faces in much the same way as face-vertex
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/// topology is assigned -- indices for face-varying values are assigned to the
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/// corners of each face just as indices for vertices were assigned.
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///
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/// Independent sets of face-varying data are stored in channels. The identifier
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/// of each channel (an integer) is expected whenever referring to face-varying
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/// data in any form.
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///
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/// \brief Create a new face-varying channel with the given number of values
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static int createBaseFVarChannel(TopologyRefiner & newRefiner, int numValues);
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/// \brief Create a new face-varying channel with the given number of values and independent interpolation options
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static int createBaseFVarChannel(TopologyRefiner & newRefiner, int numValues, Sdc::Options const& fvarOptions);
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/// \brief Assign the face-varying values for the corners of each face
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static IndexArray getBaseFaceFVarValues(TopologyRefiner & newRefiner, Index face, int channel = 0);
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//@}
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protected:
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//
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// Not to be specialized:
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//
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static bool populateBaseLevel(TopologyRefiner& refiner, MESH const& mesh, Options options);
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};
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//
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// Generic implementations:
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//
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template <class MESH>
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TopologyRefiner*
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TopologyRefinerFactory<MESH>::Create(MESH const& mesh, Options options) {
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TopologyRefiner * refiner = new TopologyRefiner(options.schemeType, options.schemeOptions);
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if (! populateBaseLevel(*refiner, mesh, options)) {
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delete refiner;
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return 0;
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}
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// Eventually want to move the Refiner's inventory initialization here. Currently it
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// is handled after topology assignment, but if the inventory is to include additional
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// features (e.g. holes, etc.) it is better off deferred to here.
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return refiner;
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}
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template <class MESH>
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bool
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TopologyRefinerFactory<MESH>::populateBaseLevel(TopologyRefiner& refiner, MESH const& mesh, Options options) {
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//
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// Construction of a specialized topology refiner involves four steps, each of which
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// involves a method specialized for MESH followed by one that takes an action in
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// response to it or in preparation for the next step.
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//
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// Both the specialized methods and those that follow them may find fault in the
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// construction and trigger failure at any time:
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//
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//
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// Sizing of the topology -- this is a required specialization for MESH. This defines
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// an inventory of all components and their relations that is used to allocate buffers
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// to be efficiently populated in the subsequent topology assignment step.
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//
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if (! resizeComponentTopology(refiner, mesh)) return false;
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if (! prepareComponentTopologySizing(refiner)) return false;
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//
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// Assignment of the topology -- this is a required specialization for MESH. If edges
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// are specified, all other topological relations are expected to be defined for them.
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// Otherwise edges and remaining topology will be completed from the face-vertices:
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//
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bool validate = options.validateFullTopology;
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TopologyCallback callback = reinterpret_cast<TopologyCallback>(reportInvalidTopology);
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void const * userData = &mesh;
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if (! assignComponentTopology(refiner, mesh)) return false;
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if (! prepareComponentTopologyAssignment(refiner, validate, callback, userData)) return false;
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//
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// User assigned and internal tagging of components -- an optional specialization for
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// MESH. Allows the specification of sharpness values, holes, etc.
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//
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if (! assignComponentTags(refiner, mesh)) return false;
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if (! prepareComponentTagsAndSharpness(refiner)) return false;
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//
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// Defining channels of face-varying primvar data -- an optional specialization for MESH.
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//
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if (! assignFaceVaryingTopology(refiner, mesh)) return false;
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if (! prepareFaceVaryingChannels(refiner)) return false;
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return true;
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseFaces(TopologyRefiner & newRefiner, int count) {
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newRefiner._levels[0]->resizeFaces(count);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseEdges(TopologyRefiner & newRefiner, int count) {
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newRefiner._levels[0]->resizeEdges(count);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseVertices(TopologyRefiner & newRefiner, int count) {
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newRefiner._levels[0]->resizeVertices(count);
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}
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template <class MESH>
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inline int
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TopologyRefinerFactory<MESH>::getNumBaseFaces(TopologyRefiner const & newRefiner) {
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return newRefiner._levels[0]->getNumFaces();
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}
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template <class MESH>
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inline int
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TopologyRefinerFactory<MESH>::getNumBaseEdges(TopologyRefiner const & newRefiner) {
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return newRefiner._levels[0]->getNumEdges();
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}
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template <class MESH>
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inline int
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TopologyRefinerFactory<MESH>::getNumBaseVertices(TopologyRefiner const & newRefiner) {
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return newRefiner._levels[0]->getNumVertices();
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseFaceVertices(TopologyRefiner & newRefiner, Index f, int count) {
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newRefiner._levels[0]->resizeFaceVertices(f, count);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseEdgeFaces(TopologyRefiner & newRefiner, Index e, int count) {
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newRefiner._levels[0]->resizeEdgeFaces(e, count);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseVertexFaces(TopologyRefiner & newRefiner, Index v, int count) {
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newRefiner._levels[0]->resizeVertexFaces(v, count);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setNumBaseVertexEdges(TopologyRefiner & newRefiner, Index v, int count) {
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newRefiner._levels[0]->resizeVertexEdges(v, count);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseFaceVertices(TopologyRefiner & newRefiner, Index f) {
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return newRefiner._levels[0]->getFaceVertices(f);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseFaceEdges(TopologyRefiner & newRefiner, Index f) {
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return newRefiner._levels[0]->getFaceEdges(f);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseEdgeVertices(TopologyRefiner & newRefiner, Index e) {
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return newRefiner._levels[0]->getEdgeVertices(e);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseEdgeFaces(TopologyRefiner & newRefiner, Index e) {
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return newRefiner._levels[0]->getEdgeFaces(e);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseVertexFaces(TopologyRefiner & newRefiner, Index v) {
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return newRefiner._levels[0]->getVertexFaces(v);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseVertexEdges(TopologyRefiner & newRefiner, Index v) {
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return newRefiner._levels[0]->getVertexEdges(v);
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}
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template <class MESH>
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inline LocalIndexArray
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TopologyRefinerFactory<MESH>::getBaseEdgeFaceLocalIndices(TopologyRefiner & newRefiner, Index e) {
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return newRefiner._levels[0]->getEdgeFaceLocalIndices(e);
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}
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template <class MESH>
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inline LocalIndexArray
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TopologyRefinerFactory<MESH>::getBaseVertexFaceLocalIndices(TopologyRefiner & newRefiner, Index v) {
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return newRefiner._levels[0]->getVertexFaceLocalIndices(v);
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}
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template <class MESH>
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inline LocalIndexArray
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TopologyRefinerFactory<MESH>::getBaseVertexEdgeLocalIndices(TopologyRefiner & newRefiner, Index v) {
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return newRefiner._levels[0]->getVertexEdgeLocalIndices(v);
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}
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template <class MESH>
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inline Index
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TopologyRefinerFactory<MESH>::findBaseEdge(TopologyRefiner const & newRefiner, Index v0, Index v1) {
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return newRefiner._levels[0]->findEdge(v0, v1);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::populateBaseLocalIndices(TopologyRefiner & newRefiner) {
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newRefiner._levels[0]->populateLocalIndices();
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setBaseEdgeNonManifold(TopologyRefiner & newRefiner, Index e, bool b) {
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newRefiner._levels[0]->setEdgeNonManifold(e, b);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setBaseVertexNonManifold(TopologyRefiner & newRefiner, Index v, bool b) {
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newRefiner._levels[0]->setVertexNonManifold(v, b);
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setBaseEdgeSharpness(TopologyRefiner & newRefiner, Index e, float s) {
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newRefiner._levels[0]->getEdgeSharpness(e) = s;
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setBaseVertexSharpness(TopologyRefiner & newRefiner, Index v, float s) {
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newRefiner._levels[0]->getVertexSharpness(v) = s;
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}
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template <class MESH>
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inline void
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TopologyRefinerFactory<MESH>::setBaseFaceHole(TopologyRefiner & newRefiner, Index f, bool b) {
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newRefiner._levels[0]->setFaceHole(f, b);
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newRefiner._hasHoles |= b;
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}
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template <class MESH>
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inline int
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TopologyRefinerFactory<MESH>::createBaseFVarChannel(TopologyRefiner & newRefiner, int numValues) {
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return newRefiner._levels[0]->createFVarChannel(numValues, newRefiner._subdivOptions);
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}
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template <class MESH>
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inline int
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TopologyRefinerFactory<MESH>::createBaseFVarChannel(TopologyRefiner & newRefiner, int numValues, Sdc::Options const& fvarOptions) {
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Sdc::Options newOptions = newRefiner._subdivOptions;
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newOptions.SetFVarLinearInterpolation(fvarOptions.GetFVarLinearInterpolation());
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return newRefiner._levels[0]->createFVarChannel(numValues, newOptions);
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}
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template <class MESH>
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inline IndexArray
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TopologyRefinerFactory<MESH>::getBaseFaceFVarValues(TopologyRefiner & newRefiner, Index face, int channel) {
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return newRefiner._levels[0]->getFaceFVarValues(face, channel);
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}
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template <class MESH>
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bool
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TopologyRefinerFactory<MESH>::resizeComponentTopology(TopologyRefiner& /* refiner */, MESH const& /* mesh */) {
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Error(FAR_RUNTIME_ERROR,
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"Failure in TopologyRefinerFactory<>::resizeComponentTopology() -- no specialization provided.");
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//
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// Sizing the topology tables:
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// This method is for determining the sizes of the various topology tables (and other
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// data) associated with the mesh. Once completed, appropriate memory will be allocated
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// and an additional method invoked to populate it accordingly.
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//
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// The following methods should be called -- first those to specify the number of faces,
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// edges and vertices in the mesh:
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//
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// void setBaseFaceCount( TopologyRefiner& newRefiner, int count)
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// void setBaseEdgeCount( TopologyRefiner& newRefiner, int count)
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// void setBaseVertexCount(TopologyRefiner& newRefiner, int count)
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//
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// and then for each face, edge and vertex, the number of its incident components:
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//
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// void setBaseFaceVertexCount(TopologyRefiner& newRefiner, Index face, int count)
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// void setBaseEdgeFaceCount( TopologyRefiner& newRefiner, Index edge, int count)
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// void setBaseVertexFaceCount(TopologyRefiner& newRefiner, Index vertex, int count)
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// void setBaseVertexEdgeCount(TopologyRefiner& newRefiner, Index vertex, int count)
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//
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// The count/size for a component type must be set before indices associated with that
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// component type can be used.
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//
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// Note that it is only necessary to size 4 of the 6 supported topological relations --
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// the number of edge-vertices is fixed at two per edge, and the number of face-edges is
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// the same as the number of face-vertices.
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//
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// So a single pass through your mesh to gather up all of this sizing information will
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// allow the Tables to be allocated appropriately once and avoid any dynamic resizing as
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// it grows.
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//
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return false;
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}
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template <class MESH>
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bool
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TopologyRefinerFactory<MESH>::assignComponentTopology(TopologyRefiner& /* refiner */, MESH const& /* mesh */) {
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Error(FAR_RUNTIME_ERROR,
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"Failure in TopologyRefinerFactory<>::assignComponentTopology() -- no specialization provided.");
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//
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// Assigning the topology tables:
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// Once the topology tables have been allocated, the six required topological
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// relations can be directly populated using the following methods:
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//
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// IndexArray setBaseFaceVertices(TopologyRefiner& newRefiner, Index face)
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// IndexArray setBaseFaceEdges(TopologyRefiner& newRefiner, Index face)
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//
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// IndexArray setBaseEdgeVertices(TopologyRefiner& newRefiner, Index edge)
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// IndexArray setBaseEdgeFaces(TopologyRefiner& newRefiner, Index edge)
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//
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// IndexArray setBaseVertexEdges(TopologyRefiner& newRefiner, Index vertex)
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// IndexArray setBaseVertexFaces(TopologyRefiner& newRefiner, Index vertex)
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//
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// For the last two relations -- the faces and edges incident a vertex -- there are
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// also "local indices" that must be specified (considering doing this internally),
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// where the "local index" of each incident face or edge is the index of the vertex
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// within that face or edge, and so ranging from 0-3 for incident quads and 0-1 for
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// incident edges. These are assigned through similarly retrieved arrays:
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//
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// LocalIndexArray setBaseVertexFaceLocalIndices(TopologyRefiner& newRefiner, Index vertex)
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// LocalIndexArray setBaseVertexEdgeLocalIndices(TopologyRefiner& newRefiner, Index vertex)
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// LocalIndexArray setBaseEdgeFaceLocalIndices( TopologyRefiner& newRefiner, Index edge)
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//
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// or, if the mesh is manifold, explicit assignment of these can be deferred and
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// all can be determined by calling:
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//
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// void populateBaseLocalIndices(TopologyRefiner& newRefiner)
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//
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// All components are assumed to be locally manifold and ordering of components in
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// the above relations is expected to be counter-clockwise.
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//
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// For non-manifold components, no ordering/orientation of incident components is
|
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// assumed or required, but be sure to explicitly tag such components (vertices and
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// edges) as non-manifold:
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//
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// void setBaseEdgeNonManifold(TopologyRefiner& newRefiner, Index edge, bool b);
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//
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// void setBaseVertexNonManifold(TopologyRefiner& newRefiner, Index vertex, bool b);
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//
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// Also consider using TopologyLevel::ValidateTopology() when debugging to ensure
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// that topology has been completely and correctly specified.
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//
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return false;
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}
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|
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template <class MESH>
|
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bool
|
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TopologyRefinerFactory<MESH>::assignFaceVaryingTopology(TopologyRefiner& /* refiner */, MESH const& /* mesh */) {
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|
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//
|
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// Optional assigning face-varying topology tables:
|
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//
|
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// Create independent face-varying primitive variable channels:
|
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// int createBaseFVarChannel(TopologyRefiner& newRefiner, int numValues)
|
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//
|
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// For each channel, populate the face-vertex values:
|
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// IndexArray setBaseFaceFVarValues(TopologyRefiner& newRefiner, Index face, int channel = 0)
|
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//
|
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return true;
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}
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|
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template <class MESH>
|
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bool
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TopologyRefinerFactory<MESH>::assignComponentTags(TopologyRefiner& /* refiner */, MESH const& /* mesh */) {
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|
|
//
|
|
// Optional tagging:
|
|
// This is where any additional feature tags -- sharpness, holes, etc. -- can be
|
|
// specified using:
|
|
//
|
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// void setBaseEdgeSharpness(TopologyRefiner& newRefiner, Index edge, float sharpness)
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// void setBaseVertexSharpness(TopologyRefiner& newRefiner, Index vertex, float sharpness)
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//
|
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// void setBaseFaceHole(TopologyRefiner& newRefiner, Index face, bool hole)
|
|
//
|
|
return true;
|
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}
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|
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template <class MESH>
|
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void
|
|
TopologyRefinerFactory<MESH>::reportInvalidTopology(
|
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TopologyError /* errCode */, char const * /* msg */, MESH const& /* mesh */) {
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|
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//
|
|
// Optional topology validation error reporting:
|
|
// This method is called whenever the factory encounters topology validation
|
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// errors. By default, nothing is reported
|
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//
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}
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} // end namespace Far
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif /* OPENSUBDIV3_FAR_TOPOLOGY_REFINER_FACTORY_H */
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