# Spherical PatternReference

From POV-Wiki

The `spherical`

pattern creates a one unit radius sphere, with its center at
the origin. It is computed by: * value = 1.0-min(1, sqrt(X^2 + Y^2 +
Z^2))* It starts at 1.0 at the origin and decreases to a minimum value of 0.0
as it approaches a distance of 1 unit from the origin in any direction. It
remains at 0.0 for all areas beyond that distance. This pattern was
originally created for use with `halo`

or `media`

but
it may be used anywhere any pattern may be used.