[openvrml-develop] Re: Problems with normal vectors beeing not normalized

[<MSo...@ya...>]

Hi Braden,

> >  Are such per
> > face normal vectors calculated somewhere?
> 
> No. Nor is it obvious to me that they should be. I don't 
> understand why per-vertex normal generation wouldn't satisfy 
> your requirement. (But then, perhaps I don't understand the 
> visual effect you're looking for.) 

My problem is that the complete modell looks pefect, except very
simple flat faces (e.g. a ball looks ok, but a simple flat cube looks
wrong). Because the faces are flat, there are no normals given for the
vertices of these faces in the VRML file, because they are redundant
for flat faces. It should be this case:

> If the normal field is NULL, the
> browser shall automatically generate normals, using creaseAngle
> to determine if and how normals are smoothed across shared
> vertices (see 4.6.3.5, Crease angle field).

The normals are not smoothed (the face is rendered with flat color as
it should be) but the normal vector is not normalized. Shall I just
send a screenshot?

Best regards,

Michael

-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.0/248 - Release Date:
01.02.2006
 


	

	
		
___________________________________________________________ 
Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de