mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-13 04:20:10 +00:00
43aa2500c4
This change moves all gregory patch generation from Far::PatchTablesFactory so that we can construct patch tables without stencil tables as well as client can chose any end patch strategies (we have 3 options for now: legacy 2.x style gregory patch, gregory basis patch and experimental regular patch approximation). Also Far::EndCapGregoryBasisPatchFactory provides index mapping from patch index to vtr face index, which can be used for single gregory patch evaluation on top of refined points, without involving heavier stencil tables generation.
109 lines
3.9 KiB
C++
109 lines
3.9 KiB
C++
//
|
|
// Copyright 2015 Pixar
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "Apache License")
|
|
// with the following modification; you may not use this file except in
|
|
// compliance with the Apache License and the following modification to it:
|
|
// Section 6. Trademarks. is deleted and replaced with:
|
|
//
|
|
// 6. Trademarks. This License does not grant permission to use the trade
|
|
// names, trademarks, service marks, or product names of the Licensor
|
|
// and its affiliates, except as required to comply with Section 4(c) of
|
|
// the License and to reproduce the content of the NOTICE file.
|
|
//
|
|
// You may obtain a copy of the Apache License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the Apache License with the above modification is
|
|
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the Apache License for the specific
|
|
// language governing permissions and limitations under the Apache License.
|
|
//
|
|
|
|
#ifndef FAR_END_CAP_REGULAR_PATCH_FACTORY_H
|
|
#define FAR_END_CAP_REGULAR_PATCH_FACTORY_H
|
|
|
|
#include "../far/patchTablesFactory.h"
|
|
#include "../far/protoStencil.h"
|
|
#include "../vtr/level.h"
|
|
|
|
namespace OpenSubdiv {
|
|
namespace OPENSUBDIV_VERSION {
|
|
|
|
namespace Far {
|
|
|
|
class TopologyRefiner;
|
|
|
|
/// \brief A specialized factory to gather Regular B-spline control vertices
|
|
///
|
|
class EndCapRegularPatchFactory {
|
|
|
|
public:
|
|
// XXXX need to add support for face-varying channel stencils
|
|
|
|
/// \brief This factory accumulates vertex for regular end cap
|
|
///
|
|
/// @param refiner TopologyRefiner from which to generate patches
|
|
///
|
|
/// @param shareBoundaryVertices Use same boundary vertices for neighboring
|
|
/// patches. It reduces the number of stencils
|
|
/// to be used.
|
|
///
|
|
EndCapRegularPatchFactory(TopologyRefiner const & refiner);
|
|
|
|
~EndCapRegularPatchFactory();
|
|
|
|
/// \brief Returns a patch type for \a patchTag generated by this factory.
|
|
///
|
|
/// @param patchTag identified tag information for the patch
|
|
///
|
|
PatchDescriptor::Type GetPatchType(PatchTablesFactoryBase::PatchFaceTag const &patchTag) const;
|
|
|
|
/// \brief Returns an end patch vertex indices for \a faceIndex.
|
|
///
|
|
/// @param level vtr refinement level
|
|
///
|
|
/// @param faceIndex vtr faceIndex at the level
|
|
///
|
|
/// @param levelPatchTags Array of patchTags for all faces in the level
|
|
///
|
|
/// @param levelVertOffset relative offset of patch vertex indices
|
|
///
|
|
ConstIndexArray GetTopology(Vtr::Level const& level, Index faceIndex,
|
|
PatchTablesFactoryBase::PatchFaceTag const * levelPatchTags,
|
|
int levelVertOffset);
|
|
|
|
/// After all the gregory basis vertices have been collected, factorize
|
|
/// their stencils with given stencil table and create new stencil table.
|
|
///
|
|
/// @param baseStencils source stencil table
|
|
///
|
|
/// @param append if true, returns concatinated stencil table which
|
|
/// also includes source stencil table at the front.
|
|
///
|
|
/// @param permute index permutation table (optional)
|
|
///
|
|
StencilTables const * CreateVertexStencilTables(
|
|
StencilTables const *baseStencils, bool append);
|
|
StencilTables const * CreateVaryingStencilTables(
|
|
StencilTables const *baseStencils, bool append);
|
|
|
|
private:
|
|
|
|
StencilTables const *createStencilTables(StencilAllocator &alloc,
|
|
StencilTables const *baseStencils,
|
|
bool append);
|
|
|
|
struct Context;
|
|
Context *_context;
|
|
};
|
|
|
|
} // end namespace Far
|
|
|
|
} // end namespace OPENSUBDIV_VERSION
|
|
} // end namespace OpenSubdiv
|
|
|
|
#endif // FAR_END_CAP_GREGORY_BASIS_PATCH_FACTORY_H
|