The closest point to the bounding box of the attached collider.

This can be used to calculate hit points when applying explosion damage.

	var hitPoints : float = 100.0;
	function ApplyHitPoints (explosionPos : Vector3, radius : float) {
		// The distance from the explosion position to the surface of the rigidbody
		var closestPoint : Vector3 = collider.ClosestPointOnBounds(explosionPos);
		var distance : float = Vector3.Distance(closestPoint, explosionPos);
		// The hit points we apply fall decrease with distance from the hit point
		var hitPoints : float = 1.0 - Mathf.Clamp01(distance / radius);
		
		// This is the final hitpoints we want to apply. 10 at maximum
		hitPoints *= 10;
	}