BallNode

BallNode.swift

import SceneKit

public class BallNode: SCNNode {
    // MARK: - Lifecycle

    public convenience init(radius: CGFloat) {
        self.init()
        let sphere = SCNSphere(radius: radius)

        // We create a Physically Based Rendering material
        let reflectiveMaterial = SCNMaterial()
        reflectiveMaterial.lightingModel = .physicallyBased
        // We want our ball to look metallic
        reflectiveMaterial.metalness.contents = 1.0
        // And shiny
        reflectiveMaterial.roughness.contents = 0.0
        sphere.firstMaterial = reflectiveMaterial

        self.geometry = sphere
    }