Variables

Rainbows are automatically generated by trueSKY providing that a number of conditions are met.

Rainbows can be fully customised, from position to strength and colour of the rainbow.

Variable	Definition	Value
Automatic Rainbow Position	Whether the rainbow follows the anti-solar/anti-lunar point, or is manually set.	Bool
Elevation	If the automatic positioning is disabled, this sets the elevation of the rainbow.	0.0 to -90.0
Azimuth	If the automatic positioning is disabled, this sets the azimuth of the rainbow.	0.0 to 360.0
Intensity	Controls the overall brightness of the rainbow.	0.0 to 10.0
Depth Position	The point at which the rainbow intersects the terrain. (Dependent a forward/reverse depth)	0.0 to 1.0
Allow Occluded Rainbows	Whether trueSKY should generate rainbows regardless of light occlusion.	Bool
Allow Lunar Rainbows	Whether trueSKY should generate rainbows using the moon’s light.	Bool

Variable	Definition	Value
Rain Speed (m/s)	Speed at which raindrops will fall, which adjusts any ‘flutter’ seen in the Rain Streaks, which are used for the rainbow.	0.0 to 120.0
Raindrop Size (mm)	At sizes less than 1.0mm, trueSKY will use a Submillimetric Light Scattering Approximation to adjust the spectral output.	0.001 to 100.0

Variable	Definition	Value
Strength	Adjusts the strength the rainbow.	0.0 to 1.0
Rain Streaks	Adjusts the strength the rainbow.	0.0 to 1.0

Note: Both Rain Strength and Rain Streaks must be greater than 0 for rainbows to be generated.