package org.codecranachan.asteroidpush.base.ui.simulation; import java.util.Collection; import org.codecranachan.asteroidpush.base.ui.widget.Widget; import org.codecranachan.asteroidpush.base.visuals.Representation; public interface Viewport extends Widget { void setRepresentations(Collection<Representation> representations); void setNextControllerFrame(int frame); }