mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
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//
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// Copyright 2015 Pixar
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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 FAR_END_CAP_REGULAR_PATCH_FACTORY_H
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#define FAR_END_CAP_REGULAR_PATCH_FACTORY_H
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#include "../far/patchTablesFactory.h"
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#include "../far/protoStencil.h"
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#include "../vtr/level.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Far {
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class TopologyRefiner;
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/// \brief A specialized factory to gather Regular B-spline control vertices
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///
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class EndCapRegularPatchFactory {
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public:
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// XXXX need to add support for face-varying channel stencils
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/// \brief This factory accumulates vertex for regular end cap
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///
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/// @param refiner TopologyRefiner from which to generate patches
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///
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/// @param shareBoundaryVertices Use same boundary vertices for neighboring
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/// patches. It reduces the number of stencils
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/// to be used.
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///
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EndCapRegularPatchFactory(TopologyRefiner const & refiner);
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~EndCapRegularPatchFactory();
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/// \brief Returns a patch type for \a patchTag generated by this factory.
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///
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/// @param patchTag identified tag information for the patch
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///
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PatchDescriptor::Type GetPatchType(PatchTablesFactoryBase::PatchFaceTag const &patchTag) const;
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/// \brief Returns an end patch vertex indices for \a faceIndex.
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///
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/// @param level vtr refinement level
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///
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/// @param faceIndex vtr faceIndex at the level
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///
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/// @param levelPatchTags Array of patchTags for all faces in the level
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///
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/// @param levelVertOffset relative offset of patch vertex indices
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///
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ConstIndexArray GetTopology(Vtr::Level const& level, Index faceIndex,
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PatchTablesFactoryBase::PatchFaceTag const * levelPatchTags,
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int levelVertOffset);
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/// After all the gregory basis vertices have been collected, factorize
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/// their stencils with given stencil table and create new stencil table.
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///
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/// @param baseStencils source stencil table
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///
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/// @param append if true, returns concatinated stencil table which
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/// also includes source stencil table at the front.
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///
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/// @param permute index permutation table (optional)
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///
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StencilTables const * CreateVertexStencilTables(
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StencilTables const *baseStencils, bool append);
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StencilTables const * CreateVaryingStencilTables(
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StencilTables const *baseStencils, bool append);
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private:
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StencilTables const *createStencilTables(StencilAllocator &alloc,
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StencilTables const *baseStencils,
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bool append);
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struct Context;
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Context *_context;
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};
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} // end namespace Far
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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#endif // FAR_END_CAP_GREGORY_BASIS_PATCH_FACTORY_H
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