X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_object.py;h=b911ed362bb242bc84f7f040a7ac25b90ac3e99a;hp=b910add12fad3ed86ef397861de92fc8bb6a50b9;hb=84269f7b598673b06757313d70934a1747045b69;hpb=7d7a8f9e77a526fd5f2920b9005805e56a4b686c

diff --git a/blender/io_mspgl/export_object.py b/blender/io_mspgl/export_object.py
index b910add1..b911ed36 100644
--- a/blender/io_mspgl/export_object.py
+++ b/blender/io_mspgl/export_object.py
@@ -1,4 +1,5 @@
 import os
+import mathutils
 
 def linear_to_srgb(l):
 	if l<0.0031308:
@@ -48,6 +49,18 @@ class ObjectExporter:
 		from .outfile import open_output
 		out_file = open_output(out_file)
 
+		p1 = max(((v.co, v.co.length) for v in obj.data.vertices), key=lambda x:x[1])[0]
+		p2 = max(((v.co, (v.co-p1).length) for v in obj.data.vertices), key=lambda x:x[1])[0]
+		center = (p1+p2)/2
+		radius = (p1-p2).length/2
+		for v in obj.data.vertices:
+			d = v.co-center
+			if d.length>radius:
+				center += d*(1-radius/d.length)/2
+				radius = (radius+d.length)/2
+
+		out_file.write("bounding_sphere_hint", center[0], center[1], center[2], radius)
+
 		prev_mesh = None
 		prev_tech = (None, None)
 		for i, l in enumerate(lods):