Controls if worlds are always drawn independent of whether rendering is currently active or not as specified by PhysicsWorld.renderingMode.
When true, world drawing is always active and a PhysicsEvents.WorldDrawResults event is produced containing the DrawResults.
When false, world drawing only occurs depending on the PhysicsWorld.renderingMode setting.
CAUTION: Drawing the world has a performance cost associated with it therefore when using this without rendering, that cost can become hidden.