text: /*************************************************************************/
  /*  navigation_mesh_generator.h                                          */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2018 Godot 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 NAVIGATION_MESH_GENERATOR_H
  #define NAVIGATION_MESH_GENERATOR_H
  
  #include "editor/editor_node.h"
  #include "editor/editor_settings.h"
  #include "os/thread.h"
  #include "scene/3d/mesh_instance.h"
  #include "scene/3d/navigation_mesh.h"
  #include "scene/resources/shape.h"
  
  #include <Recast.h>
  
  class NavigationMeshGenerator {
  protected:
  	static void _add_vertex(const Vector3 &p_vec3, Vector<float> &p_verticies);
  	static void _add_mesh(const Ref<Mesh> &p_mesh, const Transform &p_xform, Vector<float> &p_verticies, Vector<int> &p_indices);
  	static void _parse_geometry(const Transform &p_base_inverse, Node *p_node, Vector<float> &p_verticies, Vector<int> &p_indices);
  
  	static void _convert_detail_mesh_to_native_navigation_mesh(const rcPolyMeshDetail *p_detail_mesh, Ref<NavigationMesh> p_nav_mesh);
  	static void _build_recast_navigation_mesh(Ref<NavigationMesh> p_nav_mesh, EditorProgress *ep,
  			rcHeightfield *hf, rcCompactHeightfield *chf, rcContourSet *cset, rcPolyMesh *poly_mesh,
  			rcPolyMeshDetail *detail_mesh, Vector<float> &vertices, Vector<int> &indices);
  
  public:
  	static void bake(Ref<NavigationMesh> p_nav_mesh, Node *p_node);
  	static void clear(Ref<NavigationMesh> p_nav_mesh);
  };
  
  #endif // NAVIGATION_MESH_GENERATOR_H
  