Re: gEDA-user: STEP Format? [WAS: Re: PCB+GL+3D Packages??]

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Sat, 2010-11-20 at 11:59 +1100, Russell Shaw wrote:

> If fewer polygons are used but with decent shading, the main effect
> is that the silhouette has a few visible corners. That wouldn't matter
> much for resistors.
> 
> http://en.wikipedia.org/wiki/Gouraud_shading
> http://en.wikipedia.org/wiki/Phong_shading

FWIW, my resistors were shaded with a crude Blinn-Phong pixel shader.
(Simplified by having the viewer and light at infinity).

(I think!) That was basically what fell out of me doing bump mapping,
albeit very inefficiently. I probably ought to use the vertex shader to
compute the texture space basis vectors rather than CPU.

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)



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