ScreenSpaceRenderable
	-->ScreenSpaceCygnet

IswaCygnet
	-->CygnetPlane
		-->dataPlane
		-->texturePlane
	-->CygnetSphere
		-->dataSphere
		-->textureSphere
	-->CygnetCylinder
		-->dataCylinder
		-->textureCylinder


Renderable
	-->ISWAmanager:
		create iSWA cygnets.
		Reads the metadata from the cygnet and creates the appropriate class.
		can be a  IswaCygnet or a ScreenSpaceCygnet
		keeps a list of IswaCygnets to update and render.
		registers the ScreenSpaceCygnets with the renderengine.

change names in everyting in iswa folder