mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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f0128a5f5e
This change restores the use of 4-bits in Far::PatchParam to encode the refinement level of a patch. This restores one bit that was stolen to allow for more general encoding of boundary edge and transition edge masks. In order to accommodate all of the bits that are required, the transition edge mask bits are now stored along with the faceId bits. Also, accessors are now exposed directly as members of Far::PatchParam and the internal bitfield class is no longer directly exposed.
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//
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// Copyright 2013 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_FAR_PATCH_BASIS_H
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#define OPENSUBDIV3_FAR_PATCH_BASIS_H
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#include "../version.h"
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#include "../far/patchParam.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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//
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// XXXX barfowl: These functions are being kept in place while more complete
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// underlying support for all patch types is being worked out. That support
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// will include a larger set of patch types (eventually including triangular
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// patches for Loop) and arbitrary differentiation of all (to support second
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// derivatives and other needs).
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//
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// So this interface will be changing in future.
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//
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void GetBilinearWeights(PatchParam const & patchParam,
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float s, float t, float wP[4], float wDs[4], float wDt[4]);
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void GetBezierWeights(PatchParam const & patchParam,
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float s, float t, float wP[16], float wDs[16], float wDt[16]);
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void GetBSplineWeights(PatchParam const & patchParam,
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float s, float t, float wP[16], float wDs[16], float wDt[16]);
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void GetGregoryWeights(PatchParam const & patchParam,
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float s, float t, float wP[20], float wDs[20], float wDt[20]);
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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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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif /* OPENSUBDIV3_FAR_PATCH_BASIS_H */
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