zone.create.ratio

Syntax

f := zone.create.ratio(fr,index,isize)

Get a value calculated by a geometric progression, given a ratio, an index, and a size. This is the same ratio as is used in the zone create logic, the extrude block create, and building-blocks block create. This divides the interval from 0.0 to 1.0 into size sections, each of which is ratio times the size of the previous one.

Returns: f - the fraction from 0.0 to 1.0 of the geometric progression from 0 to size at index of the given ratio fr - the geometric ratio to use for the progression. Each interval will be ratio times larger than the previous. index - the index (from 0 to size) of the location in the progression to calculate isize - the total number of intervals involved