С кодом, показанным ниже, я могу иметь сферу в своей сцене. с синим фоном... Я новичок в sceneKit в iOS. Я хочу знать, как мы можем переместить этот объект (перетащить сферу) в другое положение (Drop) .
override func viewDidLoad() {
super.viewDidLoad()
sceneView = SCNView(frame: self.view.frame)
sceneView.scene = SCNScene()
self.view.addSubview(sceneView)
let groundGeometry = SCNFloor()
groundGeometry.reflectivity = 0
let groundMaterial = SCNMaterial()
groundMaterial.diffuse.contents = UIColor.blueColor()
groundGeometry.materials = [groundMaterial]
ground = SCNNode(geometry: groundGeometry)
let camera = SCNCamera()
camera.zFar = 10000
self.camera = SCNNode()
self.camera.camera = camera
self.camera.position = SCNVector3(x: -20, y: 15, z: 20)
let constraint = SCNLookAtConstraint(target: ground)
constraint.gimbalLockEnabled = true
self.camera.constraints = [constraint]
let ambientLight = SCNLight()
ambientLight.color = UIColor.darkGrayColor()
ambientLight.type = SCNLightTypeAmbient
self.camera.light = ambientLight
let spotLight = SCNLight()
spotLight.type = SCNLightTypeSpot
spotLight.castsShadow = true
spotLight.spotInnerAngle = 70.0
spotLight.spotOuterAngle = 90.0
spotLight.zFar = 500
light = SCNNode()
light.light = spotLight
light.position = SCNVector3(x: 0, y: 25, z: 25)
light.constraints = [constraint]
let sphereGeometry = SCNSphere(radius: 1.5)
let sphereMaterial = SCNMaterial()
sphereMaterial.diffuse.contents = UIColor.greenColor()
sphereGeometry.materials = [sphereMaterial]
sphere1 = SCNNode(geometry: sphereGeometry)
sphere1.position = SCNVector3(x: -15, y: 1.5, z: 0)
sceneView.scene?.rootNode.addChildNode(self.camera)
sceneView.scene?.rootNode.addChildNode(ground)
sceneView.scene?.rootNode.addChildNode(light)
sceneView.scene?.rootNode.addChildNode(sphere1)
}