kGMSEquatorProjectedMeter
extern const double kGMSEquatorProjectedMeterkGMSEquatorProjectedMeter may be useful when specifying lengths for segment in “projected”
units.
The value of kGMSEquatorProjectedMeter, 1/(pi * EarthRadius), represents the length of one
meter at the equator in projected units. For example to specify a projected length that
corresponds to 100km at the equator use 100000 * kGMSEquatorProjectedMeter.
See [GMSPath segmentsForLength:kind:], [GMSPath lengthOfKind:] and kGMSLengthProjected.