hi everybody!
I am playing with textfunc and mixfunc... just to create some changing
color-normal materials....
what I would like to do is to change the color according to the perturbated
normal ...
to do that I think to use the variable RdotP (perturbated dot product)....
but radiance doesn't seem to recognize it... (probably it works only with
brtdf?)
of course if I use Rdot... the normal is always the same and
deformation-color are not changing together....
I would like to do something like:
id1 mixfunc id2
4 idA idB f(RdotP) .
0
0
where idA and idB have same deformations but different color-specularity and
f(RdotP) is a function of Rdot-Perturbated
any idea?
thanks
giulio
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Hi Giulio,
You can get the effect you want by using the RdotP variable in a BRDTfunc material and applying it to the specular reflection variables. (As you noticed, RdotP is only available for the general reflectance types.)
-Greg
···
From: Giulio Antonutto <[email protected]>
Date: Tue Oct 21, 2003 8:13:31 AM US/Pacific
hi everybody!
I am playing with textfunc and mixfunc... just to create some changing
color-normal materials....
what I would like to do is to change the color according to the perturbated
normal ...
to do that I think to use the variable RdotP (perturbated dot product)....
but radiance doesn't seem to recognize it... (probably it works only with
brtdf?)
of course if I use Rdot... the normal is always the same and
deformation-color are not changing together....
I would like to do something like:
id1 mixfunc id2
4 idA idB f(RdotP) .
0
where idA and idB have same deformations but different color-specularity and
f(RdotP) is a function of Rdot-Perturbated
any idea?
thanks
giulio