public void enforceExtents() {
		if( p1.x < p0.x ) {
			double tmp = p1.x;
			p1.x = p0.x;
			p0.x = tmp;
		}
		if( p1.y < p0.y ) {
			double tmp = p1.y;
			p1.y = p0.y;
			p0.y = tmp;
		}
	}
public void enforceExtents() {
		if( p1.x < p0.x ) {
			double tmp = p1.x;
			p1.x = p0.x;
			p0.x = tmp;
		}
		if( p1.y < p0.y ) {
			double tmp = p1.y;
			p1.y = p0.y;
			p0.y = tmp;
		}
	}
public void enforceExtents ( ) { if ( p1 . x < p0 . x ) { double tmp = p1 . x ; p1 . x = p0 . x ; p0 . x = tmp ; } if ( p1 . y < p0 . y ) { double tmp = p1 . y ; p1 . y = p0 . y ; p0 . y = tmp ; } }
Makes sure x0,y0 is the lower extent and x1,y1 is the upper extent
Makes sure x0 y0 is the lower extent and x1 y1 is the upper extent