* @param x
	 * @param y
	 * @param radius
	 * @param champion
	 * @return true if user is pointing to this atom
	 */
	boolean isCursorOnTopOf(Atom contender, int x, int y, int radius, Atom champion) {
		return contender.screenZ > 1 && !g3d.isClippedZ(contender.screenZ)
				&& g3d.isInDisplayRange(contender.screenX, contender.screenY)
				&& contender.isCursorOnTopOf(x, y, radius, champion);
	}