width: width: Width of inner region of the rod (x axis).
height: height: Height of inner region of the rod (y axis).
depth: depth: Depth of inner region of the rod (z axis).
radius: radius: Radius of corners of inner rod box.
edge: edge: Thickness of edge region.
density: density: How much effect the filter has (0-1).
invert: invert: Inverts the entire effect of the filter.
intensity: intensity: Multiplier for both the diffuse and specular result.
diffuse: diffuse: How much this light filter affects diffuse lighting.
specular: specular: How much this light filter affects specular lighting.
saturation: saturation: Saturation of the light before hitting the surface (0=greyscale,1=normal,>1=boosted colors).
falloff: falloff: Controls the transition from the core to the edge.
colorRamp: colorRamp: This is Optional. It sets the color gradient for the transition.