From Brad Christiansen, fix expandBy(const BoundingSphere&) method to properly

handle the instance of when the two bounding sphere's have a coincident center.
2004-09-28 07:15:01 +00:00
parent de0e616433
commit 7b826228bb
1 changed files with 5 additions and 1 deletions
--- a/src/osg/BoundingSphere.cpp
+++ b/src/osg/BoundingSphere.cpp
@@ -60,7 +60,11 @@ void BoundingSphere::expandBy(const BoundingSphere& sh)
        {
            Vec3 dv = sh._center-_center;
            float dv_len = dv.length();
-            if (dv_len+sh._radius>_radius)
+            
+            if(dv_len == 0 && sh._radius>_radius) {
+               _radius = sh._radius;
+            } 
+            else if (dv_len+sh._radius>_radius)
            {
                Vec3 e1 = _center-(dv*(_radius/dv_len));
                Vec3 e2 = sh._center+(dv*(sh._radius/dv_len));