/** Bounded plane clipped by extent box,
 * works like a cheap but limited polygon
 * @author: Phil Gage
 */
class BoundedPlane extends AbstractPlane {
    Extent extent;

    // for Polygon
    BoundedPlane (Color color) {
        super(color);
    }

    BoundedPlane (Point point, Vector3 normal, Extent extent, Color color) {
        super(point,normal,color);
        this.extent = extent;
    }

    /** Returns positive if ray intersects plane within extent */
    double intersect (Ray ray, Intersection intersection) {
        double t = super.intersect (ray,intersection);
        if (t > 0.0) {
            if (extent.inside(intersection.point)) {
                intersection.obj = this;
                return t;
            }
        }
        intersection.obj = null;
        return 0.0;
    }

    Extent getExtent () {
        return extent;
    }
}