Easy metric conversions for ARKit Floats using Int extensions

Int+ARKitMetricConversions.swift

import ARKit

// Example usage:
// let twentyCentimeters: Float = 20.cm
// let twoMeters: Float = 2.m
// let oneMillimeter: Float = 1.mm
// let extent: float3 = float3(20.cm, 10.cm, 1.m)

extension Int {
    var mm: Float {
        return Float(self) / 1000
    }
    var cm: Float {
        return Float(self) / 100
    }
    var m: Float {
        return Float(self)
    }
}