-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007-2008, 2010-2011 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_GL_OBJETCINSTANCE_H_
#define MSP_GL_OBJETCINSTANCE_H_
#include <string>
+#include "object.h"
#include "renderable.h"
namespace Msp {
namespace GL {
-class Object;
class ProgramData;
/**
-Represents a single instance of an Object. An application can derive another
-class from this and overload the hook functions to specify location and other
-instance-specific parameters for the rendered objects.
+Represents a single instance of an Object. A derived class can overload the
+hook functions to specify a model matrix and other instance-specific parameters
+for the rendered objects.
+
+ObjectInstances can benefit from being put in an InstanceScene, which will
+render all instances of the same object consecutively.
*/
class ObjectInstance: public Renderable
{
ObjectInstance(const Object &);
const Object &get_object() const { return object; }
+ virtual long get_instance_key() const { return reinterpret_cast<long>(&object); }
+
+ virtual const Geometry::BoundingSphere<float, 3> *get_bounding_sphere() const { return object.get_bounding_sphere(); }
virtual void render(const Tag &tag = Tag()) const;
virtual void render(Renderer &, const Tag & = Tag()) const;
anything. */
virtual void finish_render(Renderer &, const Tag &) const { }
- virtual unsigned get_level_of_detail() const { return 0; }
+ virtual unsigned get_level_of_detail(const Renderer &) const { return 0; }
};
} // namespace GL