X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Futil.py;h=4141e9f77600891eb7ef405ecf2cc6bb3d642944;hb=cf8a11627e9bba5631b16fc32e2fee5546ea9c3c;hp=3b2f718bdb4aebf4399870ad6227b4554e78c347;hpb=7ae4af705535271ad84dbfe2b5a24bc9c546ae01;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/util.py b/blender/io_mspgl/util.py
index 3b2f718b..4141e9f7 100644
--- a/blender/io_mspgl/util.py
+++ b/blender/io_mspgl/util.py
@@ -77,3 +77,24 @@ def make_unique(values):
 			result.append(i)
 			seen.add(i)
 	return result
+
+def get_linked_node_and_socket(node_tree, socket):
+	for l in node_tree.links:
+		if socket==l.to_socket:
+			return (l.from_node, l.from_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