Menu
Lumberyard
Developer Guide (Version 1.11)

Geometries

Geometries are first created as independent objects so that they can be used alone via the IGeometry interface which they expose and then they can be physicalized and added to physical entities. Geometry physicalization means computing physical properties (volume, inertia tensor) and storing them in a special internal structure. Pointers to these structures can then be passed to physical entities.

Each physicalized geometry has a reference counter which is set to 1 during creation, incremented every time the geometry is added to an entity and decremented every time the geometry is removed or the entity is deleted. When the counter reaches 0, the physical geometry structure is deleted and the corresponding IGeometry object is released. The IGeometry object is also reference counted.