ios – 没有曲线的SCNText渲染,而不是字体

let txt = SCntext(String: "Hello",extrusionDepth: 0.2)
let textNode = SCNNode(geometry: txt)
scene.rootNode.addChildNode(textNodE)

我得到非常有棱角的文字：

无论字体如何,它似乎都是这样做的,它在设备上的行为与模拟器中的行为相同.

这是上下文中的代码：

// create a new scene
    let scene = SCNScene()

    // create and add a camera to the scene
    let cameraNode = SCNNode()
    cameraNode.camera = SCNCamera()
    scene.rootNode.addChildNode(cameraNodE)

    // place the camera
    cameraNode.position = SCNVector3(x: 10,y: 0,z: 75)

    // create and add a light to the scene
    let lightNode = SCNNode()
    lightNode.light = SCNLight()
    lightNode.light!.type = SCNLightTypeOmni
    lightNode.position = SCNVector3(x: 0,y: 10,z: 10)
    scene.rootNode.addChildNode(lightNodE)

    // create and add an ambient light to the scene
    let ambientLightNode = SCNNode()
    ambientLightNode.light = SCNLight()
    ambientLightNode.light!.type = SCNLightTypeAmbient
    ambientLightNode.light!.color = UIColor.darkGrayColor()
    scene.rootNode.addChildNode(ambientLightNodE)

    let txt = SCntext(String: "Hello",extrusionDepth: 0.2)

    let textNode = SCNNode(geometry: txt)
    scene.rootNode.addChildNode(textNodE)



    // retrieve the SCNView
    let scnView = self.view as! SCNView

    // set the scene to the view
    scnView.scene = scene