２０１５年ですよという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?
var count = 0
override func viewDidLoad() {
super.viewDidLoad()
setupScene()
create2014()
createCamera()
}
func setupScene() {
let sv = SCNView(frame: self.view.bounds)
sv.scene = SCNScene()
sv.backgroundColor = UIColor(hue: 0.6, saturation: 0.3, brightness: 0.2, alpha: 1)
sv.autoenablesDefaultLighting = true
self.view.addSubview(sv)
sceneView = sv
}
func create2014() {
let buildtext = { (s : String) -> CALayer in
let textLayer = CATextLayer()
textLayer.backgroundColor = UIColor.whiteColor().CGColor
textLayer.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
var attrs = [
NSFontAttributeName : UIFont.systemFontOfSize(160.0),
NSForegroundColorAttributeName :UIColor.darkGrayColor()
]
textLayer.string = NSMutableAttributedString(string:s, attributes:attrs)
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.foregroundColor = UIColor.blackColor().CGColor
return textLayer
}
for (n, c) in enumerate([2, 0, 1, 4]) {
let box = SCNBox(width: 10, height: 10, length: 10, chamferRadius: 1)
var arr = Array<SCNMaterial>()
for j in 0..<6 {
let m = SCNMaterial()
if j > 0 { m.diffuse.contents = buildtext(“\(c + 1)“) }
else { m.diffuse.contents = buildtext(“\(c)“) }
arr.append(m)
}
box.materials = arr
let boxNode = SCNNode(geometry: box)
boxNode.name = “box\(n)“
boxNode.position = SCNVector3(x: –15 + 10 * Float(n), y: 0, z: 0)
sceneView?.scene?.rootNode.addChildNode(boxNode)
}
}
func createCamera() {
let camera = SCNNode()
camera.camera = SCNCamera()
camera.position = SCNVector3(x: 0, y: 0, z: 90)
self.sceneView?.scene?.rootNode.addChildNode(camera)
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
let box = sceneView?.scene?.rootNode.childNodeWithName(“box\(count)“, recursively: false)
if count != 3 {
box?.runAction(SCNAction.sequence([
SCNAction.moveBy(SCNVector3(x: 0, y: 0, z: 10), duration: 0.4),
SCNAction.waitForDuration(0.1),
SCNAction.moveBy(SCNVector3(x: 0, y: 0, z: –10), duration: 0.4)
]))
} else {
box?.runAction(SCNAction.sequence([
SCNAction.moveBy(SCNVector3(x: 0, y: 0, z: 10), duration: 0.4),
SCNAction.rotateByX(CGFloat(M_PI) * 0.5, y: 0, z: 0, duration: 0.4),
SCNAction.moveBy(SCNVector3(x: 0, y: 0, z: –10), duration: 0.4)
]))
}
++count
}
}