X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frender%2Fscene.h;h=6f4f48d675e6bce3db2850ca24eb78466157769e;hb=8d211effd0c6db66e57f9ffd8ee712eef6069a1c;hp=f89f10daf26691412de2f950925b11b524d9c783;hpb=00dc5da40385d41c3a50c34c75353b257e814035;p=libs%2Fgl.git

diff --git a/source/render/scene.h b/source/render/scene.h
index f89f10da..6f4f48d6 100644
--- a/source/render/scene.h
+++ b/source/render/scene.h
@@ -11,9 +11,15 @@ namespace Msp {
 namespace GL {
 
 /**
-Scenes are containers for other Renderables.  This is a base class that can't
-be instantiated.  Examples of available Scene types are SimpleScene,
-InstancedScene and OrderedScene.
+Container for other renderables.  Subclasses provide different ways of
+rendering the contents.
+
+All types of Scenes perform frustum culling on the contents, skipping
+renderables whose bounding sphere is fully outside the view volume.  If a
+bounding sphere cannot be determined, culling is not performed on that
+renderable.
+
+SimpleScene is a good default choice if there are no specific requirements.
 */
 class Scene: public Renderable
 {
@@ -54,23 +60,14 @@ public:
 
 protected:
 	mutable Matrix culling_matrix;
-	mutable Vector4 frustum_edges[6];
 
 	Scene() = default;
-private:
-	Scene(const Scene &);
-	Scene &operator=(const Scene &);
 public:
 	virtual ~Scene() = default;
 
 	virtual void add(Renderable &) = 0;
 	virtual void remove(Renderable &) = 0;
 
-protected:
-	bool setup_frustum(const Renderer &) const;
-	bool frustum_cull(const Renderable &) const;
-
-public:
 	template<typename T>
 	static void register_type(const std::string &);
 private: