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I would like to ask if anyone has ever considered how to make a texture for a
droplet of dirty water.
If we consider for a moment a glass or a water, then it will have a refractive
index, also the medium will have an ability to adsorb light. The adsorption of
light can be expressed with ease in real life using the equation
Log (I / I0) = A = El
Where I is the intensity of light leaving the object on a given path, Io was the
light which would be leaving the object on that path if no adsroption was to
occur. While E is a constant while l is the length of the path through the
object.
I would like to also have water which is cloudy and to assume that a photon of
light for each unit of distance it travels forwards in the medium has a
probaility that it changes direction randomly. I think that this would allow me
to simulate milky water.
Finally I would like the option of being able to make the water flouresent, I
reason that if a photon of light passes through a given distance in the medium
then it should have a given probability of both changing colour and direction.
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