Vectors

Vector2D, Vector3D and Vector4D structs and functions for Swift.

Shortcuts

let direction = Vector3D.left
// Vector3D(-1.0, 0.0, 0.0)

Magnitude

let distance = Vector3D(1, 4, 8).magnitude
// 9

Squared Magnitude (for optimized comparison)

let isGreater = Vector3D(2, 2, 2).squaredMagnitude > Vector3D(1, 1, 1).squaredMagnitude
// true

Normalization

let unit = Vector3D(5, 11, -7).normalized
// Vector3D(0.358, 0.788, -0.501)
let length = unit.magnitude
// 1

Addition

let sum = Vector3D(1, 3, 5) + Vector3D(2, 4, 8)
// Vector3D(3.0, 7.0, 13.0)

Subtraction

let difference = Vector3D(10, 10, 10) - Vector3D(1, 3, 9)
// Vector3D(9.0, 7.0, 1.0)

Multiplication

let gravity = Vector3D.down * 9.8
// Vector3D(0.0, -9.8, 0.0)

Dot Product

let dotProduct = Vector3D(1, 2, 3) -* Vector3D(7, 8, 9)
// 50

Cross Product

let crossProduct = Vector3D(1, 1, 1) +* Vector3D(-1, 1, 1)
// Vector3D(0.0, -2.0, 2.0)

Convertible to CGVector, SCNVector3, or SCNVector4

let moveUI = SKAction.moveBy(~Vector2D.up, duration: 1)
let movePlayer = SCNAction.moveBy(~Vector3D.forward, duration: 1)

Installation

Add Vectors to your CocoaPods podfile:

pod 'Vectors'

License

Copyright © 2015 phelgo. MIT licensed.