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include/engine/core/octree_renderable.h

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+/* -----------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+----------------------------------------------------------------------------- */
+
+
+#ifndef	__OCTREE_RENDERABLE__
+#define	__OCTREE_RENDERABLE__
+
+
+		#include "core/renderable.h"
+		#include "container/narray_list.h"
+
+
+namespace GS {
+	namespace Core {
+
+/*
+	@short	Octree for static renderable.
+	@author	Emmanuel Julien (ejulien@nworks.fr)
+*/
+class	OctreeCullingSystem : public Renderable
+{
+public:
+
+struct	CachedNode
+{
+		Renderable		*renderable;
+		MinMax			minmax;
+		CachedNode() : renderable(0) {}
+};
+
+struct	Node
+{
+		Array <CachedNode *> cached_node;
+		MinMax			minmax;
+		AutoPtr <Node>	child[2];
+};
+
+private:
+
+		bool			dirty;
+
+		Array <CachedNode> nodes;
+		AutoPtr <Node>	root;
+
+		ArrayList <Renderable *> renderable_list;
+
+		/// Perform list insertion into the octree.
+		Node			*InsertList(List <CachedNode *> &list);
+
+		void			GetNodeRenderablePrimitive(Node *, const Camera &view, const Camera &default_view, Stack <Render::Primitive *> &, Context);
+		void			CullNodeRenderablePrimitive(Node *, const Camera &view, const Camera &default_view, Stack <Render::Primitive *> &, Context);
+
+public:
+
+		void			AddRenderable(Renderable *);
+		void			DeleteRenderable(Renderable *);
+
+		bool			Update();
+
+		/// Compute renderable min-max.
+virtual	void			ComputeRenderableMinMax(MinMax &);
+		/// Get primitive list.
+virtual	uint			GetRenderablePrimitiveList(const Camera &view, const Camera &default_view, Stack <Render::Primitive *> &list, Context context = Context_Default, bool cull = true);
+
+		OctreeCullingSystem() : dirty(true) {}
+};
+
+	} // Core
+} // GS
+
+
+#endif	// __OCTREE_RENDERABLE__