text: /*************************************************************************/
  /*  mesh_data_tool.h                                                     */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           Valjang Engine                                */
  /*                      http://Valjang.fr                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Valjang.                 */
  /* Copyright (c) 2014-2020 Valjang Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef MESH_DATA_TOOL_H
  #define MESH_DATA_TOOL_H
  
  #include "scene/resources/mesh.h"
  
  class MeshDataTool : public Reference {
  	GDCLASS(MeshDataTool, Reference);
  
  	int format;
  	struct Vertex {
  		Vector3 vertex;
  		Color color;
  		Vector3 normal; // normal, binormal, tangent
  		Plane tangent;
  		Vector2 uv;
  		Vector2 uv2;
  		Vector<int> bones;
  		Vector<float> weights;
  		Vector<int> edges;
  		Vector<int> faces;
  		Variant meta;
  	};
  
  	Vector<Vertex> vertices;
  
  	struct Edge {
  		int vertex[2];
  		Vector<int> faces;
  		Variant meta;
  	};
  
  	Vector<Edge> edges;
  
  	struct Face {
  		int v[3];
  		int edges[3];
  		Variant meta;
  	};
  
  	Vector<Face> faces;
  
  	Ref<Material> material;
  
  protected:
  	static void _bind_methods();
  
  public:
  	void clear();
  	Error create_from_surface(const Ref<ArrayMesh> &p_mesh, int p_surface);
  	Error commit_to_surface(const Ref<ArrayMesh> &p_mesh);
  
  	int get_format() const;
  
  	int get_vertex_count() const;
  	int get_edge_count() const;
  	int get_face_count() const;
  
  	Vector3 get_vertex(int p_idx) const;
  	void set_vertex(int p_idx, const Vector3 &p_vertex);
  
  	Vector3 get_vertex_normal(int p_idx) const;
  	void set_vertex_normal(int p_idx, const Vector3 &p_normal);
  
  	Plane get_vertex_tangent(int p_idx) const;
  	void set_vertex_tangent(int p_idx, const Plane &p_tangent);
  
  	Vector2 get_vertex_uv(int p_idx) const;
  	void set_vertex_uv(int p_idx, const Vector2 &p_uv);
  
  	Vector2 get_vertex_uv2(int p_idx) const;
  	void set_vertex_uv2(int p_idx, const Vector2 &p_uv2);
  
  	Color get_vertex_color(int p_idx) const;
  	void set_vertex_color(int p_idx, const Color &p_color);
  
  	Vector<int> get_vertex_bones(int p_idx) const;
  	void set_vertex_bones(int p_idx, const Vector<int> &p_bones);
  
  	Vector<float> get_vertex_weights(int p_idx) const;
  	void set_vertex_weights(int p_idx, const Vector<float> &p_weights);
  
  	Variant get_vertex_meta(int p_idx) const;
  	void set_vertex_meta(int p_idx, const Variant &p_meta);
  
  	Vector<int> get_vertex_edges(int p_idx) const;
  	Vector<int> get_vertex_faces(int p_idx) const;
  
  	int get_edge_vertex(int p_edge, int p_vertex) const;
  	Vector<int> get_edge_faces(int p_edge) const;
  	Variant get_edge_meta(int p_idx) const;
  	void set_edge_meta(int p_idx, const Variant &p_meta);
  
  	int get_face_vertex(int p_face, int p_vertex) const;
  	int get_face_edge(int p_face, int p_vertex) const;
  	Variant get_face_meta(int p_face) const;
  	void set_face_meta(int p_face, const Variant &p_meta);
  	Vector3 get_face_normal(int p_face) const;
  
  	Ref<Material> get_material() const;
  	void set_material(const Ref<Material> &p_material);
  
  	MeshDataTool();
  };
  
  #endif // MESH_DATA_TOOL_H
  