X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fobject.h;h=c8e372601077c1b1e9c43dd82a221b53b1a904a7;hp=7a40a40ba24bc71ff40af47c46af642a229e0249;hb=42c1534d95e1551c37e64a1dae288e8b75e8d8ba;hpb=85e83ace47e5a9a8ae7263886255dd81afc69278

diff --git a/source/object.h b/source/object.h
index 7a40a40b..c8e37260 100644
--- a/source/object.h
+++ b/source/object.h
@@ -1,15 +1,11 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GL_OBJECT_H_
 #define MSP_GL_OBJECT_H_
 
 #include <vector>
-#include <msp/datafile/collection.h>
+#include "bindable.h"
+#include "renderable.h"
+#include "renderpass.h"
+#include "resourceobserver.h"
 
 namespace Msp {
 namespace GL {
@@ -17,69 +13,115 @@ namespace GL {
 class Material;
 class Mesh;
 class ObjectInstance;
-class Program;
-class ProgramData;
+class Technique;
 class Texture;
 
 /**
-Stores data for a complete 3D object.  This includes a mesh, a shader and data
-for it and a number of textures.  Only the mesh is mandatory, other components
-are optional.
+Combines a Mesh with a Technique to give it an appearance.  The Technique will
+define which render passes the Object supports.
 
-See also class ObjectInstance.
+In many cases, it's desirable to include multiple copies of an Object in a
+Scene, with different model matrices.  ObjectInstances can be used to alter the
+rendering of an object on a per-instance basis.
+
+Objects can have multiple levels of detail.  The most detailed level has index
+0, with increasing indices having less detail.  When rendering an instance, the
+instance's get_level_of_detail method is called to determine which LoD to use.
 */
-class Object
+class Object: public Renderable, private ResourceObserver
 {
 private:
-	Mesh *mesh;
-	std::vector<Texture *> textures;
-	Program *shprog;
-	ProgramData *shdata;
-	Material *material;
+	struct LevelOfDetail;
 
-public:
-	class Loader: public DataFile::Loader
+	class LodLoader: public DataFile::CollectionObjectLoader<Object>
 	{
+	private:
+		unsigned index;
+		LevelOfDetail &lod;
+
 	public:
-		typedef DataFile::Collection Collection;
+		LodLoader(Object &, unsigned, Collection *);
 
-	protected:
-		Object &obj;
-		Collection &coll;
 	private:
-		std::vector<std::string> textures;
-	
+		void mesh(const std::string &);
+		void mesh_inline();
+		void technique(const std::string &);
+		void technique_inline();
+	};
+
+public:
+	class Loader: public LodLoader
+	{
 	public:
+		Loader(Object &);
 		Loader(Object &, Collection &);
-		~Loader();
-
-		Object &get_object() const { return obj; }
-		Collection &get_collection() const { return coll; }
 	private:
-		void shader(const std::string &);
-		void texture(const std::string &);
+		void init();
+		virtual void finish();
+
+		void bounding_sphere_hint(float, float, float, float);
+		void level_of_detail(unsigned);
+	};
+
+private:
+	struct LevelOfDetail
+	{
+		RefPtr<const Mesh> mesh;
+		RefPtr<const Technique> technique;
 	};
 
+	std::vector<LevelOfDetail> lods;
+	Geometry::BoundingSphere<float, 3> bounding_sphere;
+	bool lod0_watched;
+
+public:
 	Object();
+	Object(const Mesh *, const Technique *);
 	~Object();
 
-	Program *get_shader() const { return shprog; }
+private:
+	LevelOfDetail &get_lod(unsigned, const char *);
+
+public:
+	/** Sets the mesh for the highest level of detail (index 0). */
+	void set_mesh(const Mesh *m) { set_mesh(0, m); }
+
+	/** Sets the mesh for a given level of detail.  Previous LoDs must have been
+	defined. */
+	void set_mesh(unsigned, const Mesh *);
+
+private:
+	void update_bounding_sphere();
+public:
+	const Mesh *get_mesh(unsigned = 0) const;
+
+	/** Sets the technique for the highest level of detail (index 0). */
+	void set_technique(const Technique *t) { set_technique(0, t); }
+
+	/** Sets the technique for a given level of detail.  Previous LoDs must have
+	been defined. */
+	void set_technique(unsigned, const Technique *);
+
+	const Technique *get_technique(unsigned = 0) const;
+	unsigned get_n_lods() const { return lods.size(); }
 
-	/**
-	Renders the object.  If an ObjectInstance is provided, its hook functions
-	are called.
-	*/
-	void render(const ObjectInstance * =0) const;
+	virtual const Geometry::BoundingSphere<float, 3> *get_bounding_sphere() const { return &bounding_sphere; }
+
+	virtual void render(Renderer &, const Tag & = Tag()) const;
+
+	/** Renders an instance of the object.  The instance's hook functions are
+	called before and after drawing the mesh. */
+	virtual void render(Renderer &, const ObjectInstance &, const Tag & = Tag()) const;
+
+protected:
+	virtual void setup_render(Renderer &, const Tag &) const { }
+	virtual void finish_render(Renderer &, const Tag &) const { }
 
-	/**
-	Renders multiple instances of the object in one go.  This may be a
-	performance improvement, as the object-specific render setup only has to be
-	done once.
-	*/
-	void render(const std::list<const ObjectInstance *> &) const;
 private:
-	void setup_render() const;
-	void finish_render() const;
+	const RenderPass *get_pass(const Tag &, unsigned) const;
+
+	virtual void resource_loaded(Resource &);
+	virtual void resource_removed(Resource &);
 };
 
 } // namespace GL