// Copyright 2016 The Draco Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef DRACO_MESH_CORNER_TABLE_INDICES_H_
#define DRACO_MESH_CORNER_TABLE_INDICES_H_

#include <array>

#include "mesh/mesh_indices.h"

namespace draco {

// Vertex index in a corner table.
DEFINE_NEW_DRACO_INDEX_TYPE(int32_t, VertexIndex);
// Corner index that identifies each corner of every corner table face.
DEFINE_NEW_DRACO_INDEX_TYPE(int32_t, CornerIndex);

// Constants denoting invalid indices.
static constexpr VertexIndex kInvalidVertexIndex(
    std::numeric_limits<int32_t>::min() / 2);
static constexpr CornerIndex kInvalidCornerIndex(
    std::numeric_limits<int32_t>::min() / 2);

// Corner table face type.
typedef std::array<VertexIndex, 3> FaceType;

// A special case to denote an invalid corner table triangle.
static constexpr std::array<VertexIndex, 3> kInvalidFace(
    {{kInvalidVertexIndex, kInvalidVertexIndex, kInvalidVertexIndex}});

}  // namespace draco

#endif  // DRACO_MESH_CORNER_TABLE_INDICES_H_