"Marc Jacquier" <jac### [at] wanadoofr> schreef in bericht
news:41ff523f@news.povray.org...
>
> Hi Thomas,
> I'm not quite sure but I believe conversion from image to function with
> .gray takes rgb but  filter and transmit as well.
> And transmit is at 1 out of the image  zone to make it transparent.
> What I do is crappy : invert the image in an image editor  then  multiply
> the function by a negative factor in the texturing process.
> But here you don't use bitmaps, do you?
> You are using  functions. So the function factor in the texturing process
> should be positive.
>
> For my POVComp entry, I had only to evaluate distance from a central point
> (I won't spoil more ;-)
> I took the lazy path using cylindrical pattern but you can change for any
> function.
>

Hello Marc,
This sounds very promising! I shall look more deeply into your sea code
(without drowning, I hope). I am working on a scene where foam should play a
role. I'll be back, with questions, or (I hope) a satisfying image!
Thanks a lot!
Waiting for the POVComp results! I did not send in myself, but I am curious
to see what was produced.

Thomas

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