Cheat sheet for SceneKit learning app (Swift)

SceneKitCheatSheet.swift

// Configure the Scene View
self.sceneView.backgroundColor = .darkGrayColor()



// Create the scene
let scene = SCNScene()



// Create a camera and attach it to a node
let camera = SCNCamera()
camera.xFov = 10
camera.yFov = 45

let cameraNode = SCNNode()
cameraNode.camera = camera
cameraNode.position = SCNVector3(0, 0, 50)
scene.rootNode.addChildNode(cameraNode)



// Create a cube and place it in the scene
let cube = SCNBox(width: 5, height: 5, length: 5, chamferRadius: 0)
cube.firstMaterial?.diffuse.contents = UIColor(red: 0.149, green: 0.604, blue: 0.859, alpha: 1.0)
let cubeNode = SCNNode(geometry: cube)
scene.rootNode.addChildNode(cubeNode)
self.cubeNode = cubeNode



// Add an animation to the cube.
let animation = CAKeyframeAnimation(keyPath: "rotation")
animation.values = [NSValue(SCNVector4: SCNVector4(1, 1, 0.3, 0 * M_PI)),
NSValue(SCNVector4: SCNVector4(1, 1, 0.3, 1 * M_PI)),
NSValue(SCNVector4: SCNVector4(1, 1, 0.3, 2 * M_PI))]
animation.duration = 5
animation.repeatCount = HUGE
self.cubeNode?.addAnimation(animation, forKey: "rotation")
self.cubeNode?.paused = true // Start out paused

self.sceneView.scene = scene




// Touch handling method implementation
let touch = touches.first
if let touchPoint = touch?.locationInView(self.sceneView),
hitTestResult = self.sceneView.hitTest(touchPoint, options: nil).first {
	let hitNode = hitTestResult.node
	hitNode.paused = !hitNode.paused
}