#include <string>
#include "object.h"
-#include "renderable.h"
+#include "placeable.h"
namespace Msp {
namespace GL {
-class ProgramData;
-
/**
-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.
+Represents a single instance of an Object. Thanks to being derived from
+Placeable in can be positioned without additional effort. Other instance
+parameters can be set by overriding the hook functions.
ObjectInstances can benefit from being put in an InstanceScene, which will
render all instances of the same object consecutively.
*/
-class ObjectInstance: public Renderable
+class ObjectInstance: public PlacedRenderable
{
protected:
const Object &object;
/** Hook function, called from Object just before rendering the mesh.
Renderer state will have been pushed before this is called. */
- virtual void setup_render(Renderer &, const Tag &) const { }
+ virtual void setup_render(Renderer &, const Tag &) const;
/** Hook function, called from Object right after rendering the mesh. Since
Object takes care of pushing Renderer state, this rarely needs to do