Custom-Curves

Several of the LumeTools shaders allow the artist to specify "custom curves." In an ideal world, the shaders would be able to look at a SoftImage fcurve to derive the custom curve; unfortunately this is not possible in the current version of SoftImage.

Instead the shaders ask for three values: a starting value, a middle value, and an ending value. From these the shader approximates a curve that passes through the three points.

The curve above is for start = 0.0, middle = 0.25, end = 1.0

The curve above is for start = 0.0, middle = 0.50, end = 1.0

The curve above is for start = 0.0, middle = 0.75, end = 1.0