ARKit Geometry 旋轉

func addBox() {

        

        let box = SCNBox(width: 0.5, height: 0.5, length: 0.5, chamferRadius: 0)

        box.firstMaterial?.diffuse.contents="art.scnassets/10.jpg";

        

        let boxNode = SCNNode()

        boxNode.geometry = box

        boxNode.position = SCNVector3(0, 0, -2)

        

        addAnimation(node: boxNode)

        

        let scene = SCNScene()

        scene.rootNode.addChildNode(boxNode)

        sceneView.scene = scene

        

}

    

//旋轉 參考 https://medium.com/s23nyc-tech/arkit-scenekit-and-how-to-control-the-world-dc7377eb1dc6

func addAnimation(node: SCNNode) {

        let rotateOne = SCNAction.rotateBy(x: 0, y: CGFloat(Float.pi), z: 0, duration: 5.0)

        let repeatForever = SCNAction.repeatForever(rotateOne)

        node.runAction(repeatForever)

}

Swift ARKit SCNGeometry 呈現半透明在 SCNNode

let geometry:SCNGeometry

...................

                           

let material = SCNMaterial()

material.diffuse.contents = UIColor(red: 255.0 / 255.0, green: 0 / 255.0, blue: 0 / 255.0, alpha: 0.8) // 设置半透明颜色

                            

let boxNode = SCNNode()

boxNode.geometry = geometry

boxNode.geometry?.materials = [material]

boxNode.position = SCNVector3(0, -2, -2)