我正在制作一个应用程序，将一个添加SCNText到ARSCNView我创建的名为sceneView. 文本显示完美如下：（当 SCNText(string: "Test", extrusionDepth: CGFloat(0.01))） screenshot1：
但是当 SCNText(string: "Test", extrusionDepth: CGFloat(0.01))TheSCNText不显示表情符号时：
screenshot2：
这是完整的代码：
import UIKit
import SceneKit
import ARKit
import Vision
class ViewController: UIViewController, ARSCNViewDelegate {
@IBOutlet weak var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
// Set the view's delegate
sceneView.delegate = self
// Show statistics such as fps and timing information
sceneView.showsStatistics = true
// Create a new scene
let scene = SCNScene()
// Set the scene to the view
sceneView.scene = scene
// Enable Default Lighting - makes the 3D text a bit poppier.
sceneView.autoenablesDefaultLighting = true
sceneView.showsStatistics = true
// Tap Gesture Recognizer
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(gestureRecognize:)))
view.addGestureRecognizer(tapGesture)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// Create a session configuration
let configuration = ARWorldTrackingConfiguration()
// Enable plane detection
configuration.planeDetection = .horizontal
// Run the view's session
sceneView.session.run(configuration)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// Pause the view's session
sceneView.session.pause()
}
// MARK: - ARSCNViewDelegate
func renderer(_ renderer: SCNSceneRenderer, updateAtTime time: TimeInterval) {
DispatchQueue.main.async {
}
}
@objc func handleTap(gestureRecognize: UITapGestureRecognizer) {
self.create()
}
func create() {
// Get Screen Centre
let screenCentre : CGPoint = CGPoint(x: self.sceneView.bounds.midX, y: self.sceneView.bounds.midY)
let arHitTestResults : [ARHitTestResult] = sceneView.hitTest(screenCentre, types: [.featurePoint])
if let closestResult = arHitTestResults.first {
// Get Coordinates of HitTest
let transform : matrix_float4x4 = closestResult.worldTransform
let worldCoord : SCNVector3 = SCNVector3Make(transform.columns.3.x, transform.columns.3.y, transform.columns.3.z)
// Create 3D Text
let node : SCNNode = createNewParentNode()
sceneView.scene.rootNode.addChildNode(node)
node.position = worldCoord
}
}
func createNewParentNode(_ text : String) -> SCNNode {
let text = SCNText(string: "Test", extrusionDepth: CGFloat(0.01))
var font = UIFont(name: "Futura", size: 0.07)
font = font?.withTraits(traits: .traitBold)
text.font = font
text.alignmentMode = kCAAlignmentCenter
text.firstMaterial?.diffuse.contents = UIColor.orange
text.firstMaterial?.specular.contents = UIColor.white
text.firstMaterial?.isDoubleSided = true
text.chamferRadius = CGFloat(bubbleDepth)
let textNode = SCNNode(geometry: text)
textNode.pivot = SCNMatrix4MakeTranslation( positionx, positiony, positionz) // Don't worry about the positions they work fine
text.scale = SCNVector3Make(0.1, 0.1, 0.1)
let NodeParent = SCNNode()
NodeParent.addChildNode(text)
//Add More SCNNode's to NodeParent
return NodeParent
}
}
extension UIFont {
// Based on: https://stackoverflow.com/questions/4713236/how-do-i-set-bold-and-italic-on-uilabel-of-iphone-ipad
func withTraits(traits:UIFontDescriptorSymbolicTraits...) -> UIFont {
let descriptor = self.fontDescriptor.withSymbolicTraits(UIFontDescriptorSymbolicTraits(traits))
return UIFont(descriptor: descriptor!, size: 0)
}
}
我不想将它添加为 a SKLabelNode，因为我想稍后将 Storyboard 用于 Collection Views。
它与我使用的字体有关吗？