90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
//
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// Copyright 2021 Pixar
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//
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// Licensed under the terms set forth in the LICENSE.txt file available at
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// https://opensubdiv.org/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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