mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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a1c7be7c8e
This set of commits includes the addition of a new evaluation interface that treats a subdivision mesh more like a piecewise parametric surface primitive. The new interface was placed in namespace "Bfr" for "Base Face Representation" as all concepts and classes relate to a single face of the base mesh.
107 lines
3.3 KiB
C++
107 lines
3.3 KiB
C++
//
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// Copyright 2021 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 OPENSUBDIV3_REGULAR_PATCH_BUILDER_H
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#define OPENSUBDIV3_REGULAR_PATCH_BUILDER_H
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#include "../version.h"
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#include "../bfr/faceSurface.h"
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#include "../far/patchDescriptor.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Bfr {
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//
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// RegularPatchBuilder ...
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//
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class RegularPatchBuilder {
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public:
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typedef FaceSurface::Index Index;
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public:
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RegularPatchBuilder(FaceSurface const & surfaceDescription);
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~RegularPatchBuilder() { }
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// Debugging...
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void print(Index const cvIndices[] = 0) const;
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public:
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// Methods to query the number and indices of control vertices:
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int GetNumControlVertices() const { return _patchSize; }
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int GatherControlVertexIndices(Index cvIndices[]) const;
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public:
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// Methods to query patch properties:
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bool IsQuadPatch() const { return _isQuad; }
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bool IsBoundaryPatch() const { return _isBoundary; }
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Far::PatchDescriptor::Type GetPatchType() const { return _patchType; }
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// Note the bit-mask here is specific for use with Far::PatchParam
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int GetPatchParamBoundaryMask() const { return _boundaryMask; }
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public:
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// Static methods for use without a FaceSurface:
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static int GetPatchSize(int regFaceSize) {
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return (regFaceSize == 4) ? 16 : 12;
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}
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static Far::PatchDescriptor::Type GetPatchType(int regFaceSize) {
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return (regFaceSize == 4) ? Far::PatchDescriptor::REGULAR :
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Far::PatchDescriptor::LOOP;
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}
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static int GetBoundaryMask(int regFaceSize, Index const patchPoints[]);
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private:
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// Internal methods for assembling quad and tri patches:
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void gatherInteriorPatchPoints4(Index cvIndices[]) const;
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void gatherBoundaryPatchPoints4(Index cvIndices[]) const;
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void gatherInteriorPatchPoints3(Index cvIndices[]) const;
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void gatherBoundaryPatchPoints3(Index cvIndices[]) const;
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private:
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// Private members:
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FaceSurface const & _surface;
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unsigned int _isQuad : 1;
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unsigned int _isBoundary : 1;
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int _boundaryMask;
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int _patchSize;
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Far::PatchDescriptor::Type _patchType;
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};
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} // end namespace Bfr
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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_REGULAR_PATCH_BUILDER_H */
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