Latexluv opened this issue on Jun 04, 2010 ยท 182 posts
bagginsbill posted Thu, 24 June 2010 at 1:29 PM
For the curious, this is the part of my matmatic script that calculates the value to plug into transparency.
cosA = EdgeBlend(1, 0, 1).asNumber() + .00001
fx = cosA ** 2
gx = 1 - (1 - fx) / (IOR ** 2)
b = opacity
a = density
factor = 1 / Sqrt((1 - b) * gx + b * fx)
y3 = 2 * a - a * a
transValue = 1 - (1 - y3 * b) ** factor
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