How to adapt arithmetical formula to color

[Pavel Ushakov]

Hi to all
How to adapt the arithmetical formula to colour with standard v-ray texture node?
For example, I have some colour like middle grey(variable x)
r=0,5
g=0,5
b=0,5
How I can adapt these values to the next formula y=(1-x)*cos(x) where variable y is a new colour what I need to get.

[ILS]

interesting question but i'm not sure what you're trying to do.

if your x color variable is 3ds max color value (color r g b) your rgb values would be x.red, x.blue and x.green

newR=(1-x)*cos(x.red)
newG=(1-x)*cos(x.green)
newB=(1-x)*cos(x.blue)

new colour y would be y = (color newR newG newB)
this is assuming you want color as floating point values 0 - 1.0 rather than 0-255 integers