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extern/draco/dracoenc/src/draco/mesh/mesh_are_equivalent.h
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| // 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_MESH_ARE_EQUIVALENT_H_ | |||||
| #define DRACO_MESH_MESH_ARE_EQUIVALENT_H_ | |||||
| #include "draco/core/vector_d.h" | |||||
| #include "draco/mesh/mesh.h" | |||||
| // This file defines a functor to compare two meshes for equivalency up | |||||
| // to permutation of the vertices. | |||||
| namespace draco { | |||||
| // A functor to compare two meshes for equivalency up to permutation of the | |||||
| // vertices. | |||||
| class MeshAreEquivalent { | |||||
| public: | |||||
| // Returns true if both meshes are equivalent up to permutation of | |||||
| // the internal order of vertices. This includes all attributes. | |||||
| bool operator()(const Mesh &mesh0, const Mesh &mesh1); | |||||
| private: | |||||
| // Internal type to keep overview. | |||||
| struct MeshInfo { | |||||
| explicit MeshInfo(const Mesh &in_mesh) : mesh(in_mesh) {} | |||||
| const Mesh &mesh; | |||||
| std::vector<FaceIndex> ordered_index_of_face; | |||||
| IndexTypeVector<FaceIndex, int> corner_index_of_smallest_vertex; | |||||
| }; | |||||
| // Prepare functor for actual comparison. | |||||
| void Init(const Mesh &mesh0, const Mesh &mesh1); | |||||
| // Get position as Vector3f of corner c of face f. | |||||
| static Vector3f GetPosition(const Mesh &mesh, FaceIndex f, int32_t c); | |||||
| // Internal helper function mostly for debugging. | |||||
| void PrintPosition(const Mesh &mesh, FaceIndex f, int32_t c); | |||||
| // Get the corner index of the lex smallest vertex of face f. | |||||
| static int32_t ComputeCornerIndexOfSmallestPointXYZ(const Mesh &mesh, | |||||
| FaceIndex f); | |||||
| // Less compare functor for two faces (represented by their indices) | |||||
| // with respect to their lex order. | |||||
| struct FaceIndexLess { | |||||
| explicit FaceIndexLess(const MeshInfo &in_mesh_info) | |||||
| : mesh_info(in_mesh_info) {} | |||||
| bool operator()(FaceIndex f0, FaceIndex f1) const; | |||||
| const MeshInfo &mesh_info; | |||||
| }; | |||||
| void InitCornerIndexOfSmallestPointXYZ(); | |||||
| void InitOrderedFaceIndex(); | |||||
| std::vector<MeshInfo> mesh_infos_; | |||||
| int32_t num_faces_; | |||||
| }; | |||||
| } // namespace draco | |||||
| #endif // DRACO_MESH_MESH_ARE_EQUIVALENT_H_ | |||||