Prevent division by zero in stltool, at the risk of non-normalized normals.

2011-09-28 15:10:09 +02:00 · 2011-09-28 15:10:09 +02:00 · d59fc73125
parent e97754e3dc
commit d59fc73125
1 changed files with 2 additions and 0 deletions
--- a/stltool.py
+++ b/stltool.py
@ -8,6 +8,8 @@ def genfacet(v):
    vecb=[v[2][0]-v[1][0],v[2][1]-v[1][1],v[2][2]-v[1][2]]
    vecx=cross(veca,vecb)
    vlen=math.sqrt(sum(map(lambda x:x*x,vecx)))
+    if vlen==0:
+        vlen=1
    normal=map(lambda x:x/vlen, vecx)
    return [normal,v]