246 {

   246 {

   247 	Float nearest_distances[4] = {Inf,Inf,Inf,Inf};

   247 	Float nearest_distances[4] = {Inf,Inf,Inf,Inf};

   248 	Shape *nearest_shapes[4];

   248 	Shape *nearest_shapes[4];

   249 	static const Shape *origin_shapes[4] = {NULL, NULL, NULL, NULL};

   249 	static const Shape *origin_shapes[4] = {NULL, NULL, NULL, NULL};

   250 	top->packet_intersection(origin_shapes, rays, nearest_distances, nearest_shapes);

   250 	top->packet_intersection(origin_shapes, rays, nearest_distances, nearest_shapes);

   252 

   251 

   253 	for (int i = 0; i < 4; i++)

   252 	for (int i = 0; i < 4; i++)

   254 		if (nearest_shapes[i] == NULL)

   253 		if (nearest_shapes[i] == NULL)

   255 			results[i] = bg_colour;

   254 			results[i] = bg_colour;

   256 		else

   255 		else