"Mike Williams" <nos### [at] econymdemoncouk> wrote in message 
news:+7jz### [at] econymdemoncouk...
>
> A sphere only has 4 degrees of freedom, so you could place a sphere so
> that it intersected the three vertices of the triangle, and matched ONE
> of the vertex normals. That would then uniquely define the sphere. The
> other two vertex normals would not match except in a few specific
> situations.
>


Ahhh...  I didn't realize that each vertex had a normal.  I guess I need to 
learn more about smooth meshes/triangles.  Now I guess I'll have to start 
thinking about using iso-surfaces, in which case, I think I'm going to stop 
thinking.

Thanks for the answer.

-- 
Jeremy
www.beantoad.com

Post a reply to this message