swift - 节点不旋转？

Question

当我运行应用程序时，节点不旋转。无论我将旋转更改为什么，节点都将保持在“0,0,0,0”位置。

class CustomSCNNode: SCNNode {



var positionToSlideFrom = SCNVector3Zero

convenience init(geometry: SCNGeometry, initialPosition: SCNVector3, rotation: Float) {
    self.init()
    self.geometry = geometry
    self.position = initialPosition
    self.positionToSlideFrom = initialPosition
    self.rotation.y = rotation


}

}

//传递到 GeometryNodes 中的节点将由用户移动。这是什么也没有发生的地方!

class GeometryNodes {


let sphere = CustomSCNNode(geometry: SCNSphere(radius: 0.05), initialPosition: SCNVector3(0,1.3,0), rotation: -45)

func addNodesTo(_ parentNode: SCNNode) {
    sphere.rotation.y = -45
    parentNode.addChildNode(sphere)

}

func slideFunction(_ node: CustomSCNNode, translation: Float) {
    //Can't add anything yet due to rotation not working

  }
func slideFunction2(_ node: SCNNode, translation: Float) {

    node.position.z =  translation
    //node.position.x =  translation

}

func slide(xTranslation: Float) {

    slideFunction(sphere, translation: xTranslation)
}
func slide2(zTranslation: Float) {
    //let gameScene = BallScene()
    slideFunction2(sphere, translation: zTranslation)

}

}

Answer 1

要绕 Y 轴旋转 45 度，您需要将旋转指定为:

self.rotation = SCNVector4Make(0, 1, 0, 45 * M_PI / 180.0)

同样，如果您围绕 X 或 Z 轴旋转，请确保正确表达 XYZ 轴。

或者，您也可以使用eulerAngles属性来指定旋转:

self.euelerAngles = SCNVector3Make(0, 45 * M_PI / 180.0, 0)