text: /*************************************************************************/
  /*  baked_lightmap.h                                                     */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 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.                */
  /*************************************************************************/
  
  #if 0
  #ifndef BAKED_INDIRECT_LIGHT_H
  #define BAKED_INDIRECT_LIGHT_H
  
  #include "multimesh_instance.h"
  #include "scene/3d/light.h"
  #include "scene/3d/visual_instance.h"
  
  class BakedLightmapData : public Resource {
  	GDCLASS(BakedLightmapData, Resource);
  
  	RID baked_light;
  	AABB bounds;
  	float energy;
  	int cell_subdiv;
  	Transform cell_space_xform;
  
  	struct User {
  
  		NodePath path;
  		Ref<Texture2D> lightmap;
  		int instance_index;
  	};
  
  	Vector<User> users;
  
  	void _set_user_data(const Array &p_data);
  	Array _get_user_data() const;
  
  protected:
  	static void _bind_methods();
  
  public:
  	void set_bounds(const AABB &p_bounds);
  	AABB get_bounds() const;
  
  	void set_octree(const PoolVector<uint8_t> &p_octree);
  	PoolVector<uint8_t> get_octree() const;
  
  	void set_cell_space_transform(const Transform &p_xform);
  	Transform get_cell_space_transform() const;
  
  	void set_cell_subdiv(int p_cell_subdiv);
  	int get_cell_subdiv() const;
  
  	void set_energy(float p_energy);
  	float get_energy() const;
  
  	void add_user(const NodePath &p_path, const Ref<Texture2D> &p_lightmap, int p_instance = -1);
  	int get_user_count() const;
  	NodePath get_user_path(int p_user) const;
  	Ref<Texture2D> get_user_lightmap(int p_user) const;
  	int get_user_instance(int p_user) const;
  	void clear_users();
  
  	virtual RID get_rid() const;
  	BakedLightmapData();
  	~BakedLightmapData();
  };
  
  class BakedLightmap : public VisualInstance {
  	GDCLASS(BakedLightmap, VisualInstance);
  
  public:
  	enum BakeQuality {
  		BAKE_QUALITY_LOW,
  		BAKE_QUALITY_MEDIUM,
  		BAKE_QUALITY_HIGH
  	};
  
  	enum BakeMode {
  		BAKE_MODE_CONE_TRACE,
  		BAKE_MODE_RAY_TRACE,
  	};
  
  	enum BakeError {
  		BAKE_ERROR_OK,
  		BAKE_ERROR_NO_SAVE_PATH,
  		BAKE_ERROR_NO_MESHES,
  		BAKE_ERROR_CANT_CREATE_IMAGE,
  		BAKE_ERROR_USER_ABORTED
  
  	};
  
  	typedef void (*BakeBeginFunc)(int);
  	typedef bool (*BakeStepFunc)(int, const String &);
  	typedef void (*BakeEndFunc)();
  
  private:
  	float bake_cell_size;
  	float capture_cell_size;
  	Vector3 extents;
  	float bake_default_texels_per_unit;
  	float propagation;
  	float energy;
  	BakeQuality bake_quality;
  	BakeMode bake_mode;
  	bool hdr;
  	String image_path;
  
  	Ref<BakedLightmapData> light_data;
  
  	struct PlotMesh {
  		Ref<Material> override_material;
  		Vector<Ref<Material> > instance_materials;
  		Ref<Mesh> mesh;
  		Transform local_xform;
  		NodePath path;
  		int instance_idx;
  	};
  
  	struct PlotLight {
  		Light *light;
  		Transform local_xform;
  	};
  
  	void _find_meshes_and_lights(Node *p_at_node, List<PlotMesh> &plot_meshes, List<PlotLight> &plot_lights);
  
  	void _debug_bake();
  
  	void _assign_lightmaps();
  	void _clear_lightmaps();
  
  	static bool _bake_time(void *ud, float p_secs, float p_progress);
  
  	struct BakeTimeData {
  		String text;
  		int pass;
  		uint64_t last_step;
  	};
  
  protected:
  	static void _bind_methods();
  	void _notification(int p_what);
  
  public:
  	static BakeBeginFunc bake_begin_function;
  	static BakeStepFunc bake_step_function;
  	static BakeEndFunc bake_end_function;
  
  	void set_light_data(const Ref<BakedLightmapData> &p_data);
  	Ref<BakedLightmapData> get_light_data() const;
  
  	void set_bake_cell_size(float p_cell_size);
  	float get_bake_cell_size() const;
  
  	void set_capture_cell_size(float p_cell_size);
  	float get_capture_cell_size() const;
  
  	void set_extents(const Vector3 &p_extents);
  	Vector3 get_extents() const;
  
  	void set_bake_default_texels_per_unit(const float &p_bake_texels_per_unit);
  	float get_bake_default_texels_per_unit() const;
  
  	void set_propagation(float p_propagation);
  	float get_propagation() const;
  
  	void set_energy(float p_energy);
  	float get_energy() const;
  
  	void set_bake_quality(BakeQuality p_quality);
  	BakeQuality get_bake_quality() const;
  
  	void set_bake_mode(BakeMode p_mode);
  	BakeMode get_bake_mode() const;
  
  	void set_hdr(bool p_enable);
  	bool is_hdr() const;
  
  	void set_image_path(const String &p_path);
  	String get_image_path() const;
  
  	AABB get_aabb() const;
  	PoolVector<Face3> get_faces(uint32_t p_usage_flags) const;
  
  	BakeError bake(Node *p_from_node, bool p_create_visual_debug = false);
  	BakedLightmap();
  };
  
  VARIANT_ENUM_CAST(BakedLightmap::BakeQuality);
  VARIANT_ENUM_CAST(BakedLightmap::BakeMode);
  VARIANT_ENUM_CAST(BakedLightmap::BakeError);
  
  #endif
  #endif // BAKED_INDIRECT_LIGHT_H
  