X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Futil.py;h=4141e9f77600891eb7ef405ecf2cc6bb3d642944;hb=77b358049bc1ef38ea013175a485cecd71a173c9;hp=e77e544751abe7b9bcdbfe8ad968ec451b86b2ca;hpb=083a8227715fa32c841fc2b8126e4ab8d2840ba0;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/util.py b/blender/io_mspgl/util.py
index e77e5447..4141e9f7 100644
--- a/blender/io_mspgl/util.py
+++ b/blender/io_mspgl/util.py
@@ -85,3 +85,16 @@ def get_linked_node_and_socket(node_tree, socket):
 		elif socket==l.from_socket:
 			return (l.to_node, l.to_socket)
 	return (None, None)
+
+def compute_bounding_sphere(points):
+	p1 = max(((p, p.length) for p in points), key=lambda x:x[1])[0]
+	p2 = max(((p, (p-p1).length) for p in points), key=lambda x:x[1])[0]
+	center = (p1+p2)/2
+	radius = (p1-p2).length/2
+	for p in points:
+		d = p-center
+		if d.length>radius:
+			center += d*(1-radius/d.length)/2
+			radius = (radius+d.length)/2
+
+	return center, radius