なぞると板から四角がボコボコと飛び出てくるiPhoneアプリのサンプルコードを描いてみます。
import UIKit
import SceneKit
class ViewController: UIViewController {
weak var sceneView : SCNView?
weak var scene : SCNScene?
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor(hue: 0.3, saturation: 0.3, brightness: 1, alpha: 1)
self.setupScene()
self.createShards()
self.createCamera()
self.createLight()
}
func setupScene() {
let w = CGRectGetMaxX(self.view.bounds)
let sv = SCNView(frame: CGRectMake(0, 0, w, w))
sv.scene = SCNScene()
sv.backgroundColor = UIColor(hue: 0.3, saturation: 0.3, brightness: 1, alpha: 1)
self.view.addSubview(sv)
self.sceneView = sv
self.scene = sv.scene
}
func createShards() {
let n = 30.0
let dw = CGFloat(100.0 / n)
for i in 0..<900 {
let box = SCNBox(width: dw, height: dw, length: 5, chamferRadius: 0)
box.firstMaterial?.diffuse.contents = UIColor.whiteColor()
let boxNode = SCNNode(geometry: box)
let x = Float(i % 30) * Float(dw) – 15.0 * Float(dw)
let y = Float(i / 30) * Float(dw) – 15.0 * Float(dw)
boxNode.position = SCNVector3(x: x, y: y, z: 0)
self.scene?.rootNode.addChildNode(boxNode)
}
}
func createCamera() {
let camera = SCNNode()
camera.camera = SCNCamera()
camera.rotation = SCNVector4(x: 1, y: 0, z: 0, w: 0.3)
camera.position = SCNVector3(x: 0, y: –20, z: 80)
self.scene?.rootNode.addChildNode(camera)
}
func createLight() {
let light = SCNLight()
light.type = SCNLightTypeSpot
light.color = UIColor.whiteColor()
light.spotOuterAngle = 150
light.castsShadow = true
let lightNode = SCNNode()
lightNode.light = light
lightNode.position = SCNVector3(x: 0, y: 0, z: 100)
self.scene?.rootNode.addChildNode(lightNode)
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
let p = touches.anyObject()!.locationInView(self.view)
self.panelMove(p)
}
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
let p = touches.anyObject()!.locationInView(self.view)
self.panelMove(p)
}
func panelMove(p : CGPoint) {
if let hits = self.sceneView?.hitTest(p, options: nil) {
if let hit = hits.first?.node {
if hit.hasActions() {
return;
}
hit.runAction(SCNAction.sequence([
SCNAction.moveTo(SCNVector3(x: hit.position.x, y: hit.position.y, z: 10), duration: 3.0),
SCNAction.moveTo(SCNVector3(x: hit.position.x, y: hit.position.y, z: 0), duration: 1.8)]),
forKey:“move”, completionHandler:{
hit.position = SCNVector3(x: hit.position.x, y: hit.position.y, z: 0)
})
}
}
}
}