Simon Dyer nous apporta ses lumieres en ce 2005-12-05 06:03:
> I'm trying to simulate a lens as a texture in plastic, similar to the effect
> of a lenticular or fresnel lens.
> PovRay seemed to make sense to simulate the plastic, but oh what a learning
> curve.
> 
> Wondered if anyone could point me to a texture library or tutorial to help
> in this endeavour.
> 
> The plan is to design the shape ( thin plastic about 2mm thick ) and add an
> underside repeating pattern texture that will let light arriving at the
> normal through from above but not light that hits at a tight angle.  Once
> I've simulated this in PovRay and proven it, the texture will be used in the
> CAD-CAM thats going to tooling for the injection moulding process.  Many of
> the engineering packages cannot do real ray tracing so they cannot simulate
> the lens effect and I'm stuck .
> 
> Any help or pointers would really be appreciated.
> 
> --
> 
> 
> 
My first bet would be to use the onion pattern as my normal. You may need to scale it
down some.

-- 
Alain
-------------------------------------------------
Judaism: Why does this shit always happen to us?

Post a reply to this message