OpenSubdiv/opensubdiv/far/ptexIndices.h
2015-05-19 11:22:37 -07:00

108 lines
3.0 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.
//
#pragma once
#ifndef OPENSUBDIV3_FAR_PTEX_INDICES_H
#define OPENSUBDIV3_FAR_PTEX_INDICES_H
#include "../version.h"
#include "../far/topologyRefiner.h"
#include "../far/types.h"
#include <vector>
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
namespace Far {
///
/// \brief Object used to compute and query ptex face indices.
///
/// Given a refiner, constructing a PtexIndices object builds the mapping
/// from coarse faces to ptex ids. Once built, the object can be used to
/// query the mapping.
///
class PtexIndices {
public:
/// \brief Constructor
PtexIndices(TopologyRefiner const &refiner);
/// \brief Destructor
~PtexIndices();
//@{
///
/// Ptex
///
/// \brief Returns the number of ptex faces in the mesh
///
int GetNumFaces() const;
/// \brief Returns the ptex face index given a coarse face 'f' or -1
///
int GetFaceId(Index f) const;
/// \brief Returns ptex face adjacency information for a given coarse face
///
/// @param refiner refiner used to build this PtexIndices object.
///
/// @param face coarse face index
///
/// @param quadrant quadrant index if 'face' is not a quad (the local ptex
/// sub-face index). Must be less than the number of face
/// vertices.
///
/// @param adjFaces ptex face indices of adjacent faces
///
/// @param adjEdges ptex edge indices of adjacent faces
///
void GetAdjacency(
TopologyRefiner const &refiner,
int face, int quadrant,
int adjFaces[4], int adjEdges[4]) const;
//@}
private:
void initializePtexIndices(TopologyRefiner const &refiner);
private:
std::vector<Index> _ptexIndices;
};
} // end namespace Far
} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
} // end namespace OpenSubdiv
#endif /* OPENSUBDIV3_FAR_PTEX_INDICES_H */