GLOWING

THE BOX'S MAIN HELP:

This shader simulates a glowing surface.
NN  is the surface normal.
II  is the incidence vector.
ATT controls the attenuation of the falloff for the glow.
GLO is the glow color.
OP  is the opacity at the center of the glow.

NN (input):

This must be a vector.  The default is the surface normal.

II (input):

This must be a vector.  The default is the incidence vector.

ATT (input):

This must be a scalar.  Default is 1.0, linear falloff.
It controls the attenuation of the falloff for the glow.

GLO (input):

This must be a color.  Default is WHITE.
This is the glow color.

OP (input):

This must be a scalar.  The default is solid.
This is the opacity at the center of the object.

OUT (output):

This is the returned color.
It simulates a glowing object.

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