Function UtmProjection.scaleFactorAtNaturalOrigin

Fixed UTM natural-origin scale factor: 0.9996.

T scaleFactorAtNaturalOrigin() const pure nothrow @nogc @property @safe;

Example

Example reading the scale factor at natural origin. 

import geodesy;
const projection = UtmProjection!double.fromZone(
    wgs84!double(), UtmZone.fromNumber(33), UtmHemisphere.north);
assert(projection.scaleFactorAtNaturalOrigin == 0.9996);