I had some limited success with a similar project some time ago. But back
then I still had a 486. Guess why I quit (and didn't patent it).
As for the image, a colored mosaic window - like yours - will probably be
the most common use for this effect. It also tends to be the worst kind of
an image to project through media - lot of sarp color variation requiring
high sampling rates...

Margus

Ken wrote in message <370### [at] pacbellnet>...
>Greetings Pov People,
>
> The title of this message comes from an off had comment I made
>yesterday in .general. I mentioned if I ever figured out a way
>to get an image map like a stained glass window to interact with
>media I would patent the process. Wouldn't you know it I achieved
>that goal this evening. It needs refinement but the process works
>as can be seen in the very preliminary example.
>
>  You should be able to see a light atmospheric haze and the image
>you see is actually projected from off the screen to the right
>across to the opposite wall and steps area. As this took close to
>8 hrs. to render I am unlikely to pursue this particular image any
>further. It was mostly a proof of concept image and I am more than
>willing to share my work to date with anyone interested in how the
>process works.
>
>
>  You will see at about one third the way down the image a streak
>or difference in appearance. This was caused by me from stopping
>the render at that point. I opened the file in the photon patch
>and choose the continue rendering function to compare the behaviour
>between the two versions. Nathan has added a true parallel ray
>function to the cylinder light source which is what I was using
>behind the image map. It is obvious that it has a very different
>effect on the way it interacts with scattering media. I stopped it
>rather quickly after seeing how it looked and finished the render
>in the official build of Pov 3.1. For the amount of time spent
>rendering it was not worth it to start over to remove it plus I
>want Nathan to see the difference as well.
>
>--
>Ken Tyler
>
>mailto://tylereng@pacbell.net

Post a reply to this message