BodyDef bodyDef=new BodyDef();
bodyDef.position.set(CoordinateConverter.coordPixelsToWorld(p));
PolygonShape shape=new PolygonShape();
Vec2[] vertices={
CoordinateConverter.vectorPixelsToWorld(new Vector(-250,75)),
CoordinateConverter.vectorPixelsToWorld(new Vector(250,75)),
CoordinateConverter.vectorPixelsToWorld(new Vector(CRATER_WIDTH/2,-75)),
CoordinateConverter.vectorPixelsToWorld(new Vector(-CRATER_WIDTH/2,-75)),
};