99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
//
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// Copyright 2015 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_FAR_STENCILBUILDER_H
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#define OPENSUBDIV3_FAR_STENCILBUILDER_H
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#include <vector>
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#include "../version.h"
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#include "../far/stencilTable.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Far {
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namespace internal {
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template <typename REAL> class WeightTable;
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template <typename REAL>
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class StencilBuilder {
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public:
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StencilBuilder(int coarseVertCount,
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bool genCtrlVertStencils=true,
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bool compactWeights=true);
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~StencilBuilder();
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// TODO: noncopyable.
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size_t GetNumVerticesTotal() const;
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int GetNumVertsInStencil(size_t stencilIndex) const;
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void SetCoarseVertCount(int numVerts);
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// Mapping from stencil[i] to its starting offset in the sources[] and weights[] arrays;
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std::vector<int> const& GetStencilOffsets() const;
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// The number of contributing sources and weights in stencil[i]
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std::vector<int> const& GetStencilSizes() const;
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// The absolute source vertex offsets.
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std::vector<int> const& GetStencilSources() const;
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// The individual vertex weights, each weight is paired with one source.
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std::vector<REAL> const& GetStencilWeights() const;
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std::vector<REAL> const& GetStencilDuWeights() const;
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std::vector<REAL> const& GetStencilDvWeights() const;
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std::vector<REAL> const& GetStencilDuuWeights() const;
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std::vector<REAL> const& GetStencilDuvWeights() const;
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std::vector<REAL> const& GetStencilDvvWeights() const;
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// Vertex Facade.
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class Index {
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public:
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Index(StencilBuilder* owner, int index)
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: _owner(owner)
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, _index(index)
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{}
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// Add with point/vertex weight only.
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void AddWithWeight(Index const & src, REAL weight);
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void AddWithWeight(StencilReal<REAL> const& src, REAL weight);
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// Add with first derivative.
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void AddWithWeight(StencilReal<REAL> const& src,
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REAL weight, REAL du, REAL dv);
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// Add with first and second derivatives.
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void AddWithWeight(StencilReal<REAL> const& src,
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REAL weight, REAL du, REAL dv, REAL duu, REAL duv, REAL dvv);
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Index operator[](int index) const {
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return Index(_owner, index+_index);
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}
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int GetOffset() const { return _index; }
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void Clear() {/*nothing to do here*/}
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private:
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StencilBuilder* _owner;
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int _index;
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};
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private:
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WeightTable<REAL>* _weightTable;
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};
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} // end namespace internal
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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_STENCILBUILDER_H
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