SceneKitプレイグラウンドスピードを改善する

Question

私はいくつかの単純なSceneKitランタイムノードのプレーンの作成をテストしており（約30プレーンのみ）、概念をテストするためにプレイグラウンドを使用することを好みます。通常はPlaygroundsはかなり速く走りますが、SceneKitでは通常1秒の時間がかかります。ここでは、単純な5x5の迷路

import UIKit 
import SceneKit 
import PlaygroundSupport // needed to create the live view 

let maze = Maze(mazeSizeX, mazeSizeY) 
public let π = M_PI 
maze.solveMaze(x: mazeSizeX-1, y: mazeSizeY-1, comingFrom: -1) 
maze.displayWithSolution() 

let cellSize: CGFloat = 1.0 

let scene = SCNScene() 


let blueMat = SCNMaterial() 
blueMat.diffuse.contents = #colorLiteral(red: 0.9529411793, green: 0.6862745285, blue: 0.1333333403, alpha: 1) 
blueMat.lightingModel = SCNMaterial.LightingModel.physicallyBased 

let redMat = SCNMaterial() 
redMat.diffuse.contents = #colorLiteral(red: 0.9254902005, green: 0.2352941185, blue: 0.1019607857, alpha: 1) 
redMat.lightingModel = SCNMaterial.LightingModel.physicallyBased 

let greenMat = SCNMaterial() 
greenMat.diffuse.contents = #colorLiteral(red: 0.3411764801, green: 0.6235294342, blue: 0.1686274558, alpha: 1) 
greenMat.lightingModel = SCNMaterial.LightingModel.physicallyBased 

let purpleMat = SCNMaterial() 
purpleMat.diffuse.contents = #colorLiteral(red: 0.5568627715, green: 0.3529411852, blue: 0.9686274529, alpha: 1) 
purpleMat.lightingModel = SCNMaterial.LightingModel.physicallyBased 


let planeN = SCNPlane(width: cellSize, height: cellSize) 
let planeS = SCNPlane(width: cellSize, height: cellSize) 
let planeE = SCNPlane(width: cellSize, height: cellSize) 
let planeW = SCNPlane(width: cellSize, height: cellSize) 

planeN.materials = [blueMat] 
planeS.materials = [redMat] 
planeE.materials = [greenMat] 
planeW.materials = [purpleMat] 
//plane.firstMaterial?.isDoubleSided = true 


for x in 0 ..< mazeSizeX 
{ 
    let xPos: CGFloat = CGFloat(x) 
    for y in 0 ..< mazeSizeY 
    { 
     let yPos: CGFloat = CGFloat(y) 
     if maze.isWallThere(x: Double(x), y: Double(y), side: North) 
     { 
      let planeNode = SCNNode(geometry: planeN) 
      planeNode.rotation = SCNVector4(-1, 0, 0, π/2) 
      planeNode.position = SCNVector3(-yPos*cellSize, (xPos-0.5)*cellSize, cellSize/2.0) 
      scene.rootNode.addChildNode(planeNode) 
     } 
     if maze.isWallThere(x: Double(x), y: Double(y), side: South) 
     { 

      let planeNode = SCNNode(geometry: planeS) 
      planeNode.rotation = SCNVector4(1, 0, 0, π/2) 
      planeNode.position = SCNVector3(-yPos*cellSize, (xPos+0.5)*cellSize, cellSize/2.0) 
      scene.rootNode.addChildNode(planeNode) 
     } 
     if maze.isWallThere(x: Double(x), y: Double(y), side: East) 
     { 
      let planeNode = SCNNode(geometry: planeE) 
      planeNode.rotation = SCNVector4(0, 1, 0, π/2) 
      planeNode.position = SCNVector3((-yPos-0.5)*cellSize, xPos*cellSize, cellSize/2.0) 
      scene.rootNode.addChildNode(planeNode) 
     } 
     if maze.isWallThere(x: Double(x), y: Double(y), side: West) 
     { 
      let planeNode = SCNNode(geometry: planeW) 
      planeNode.rotation = SCNVector4(0, -1, 0, π/2) 
      planeNode.position = SCNVector3((-yPos+0.5)*cellSize, xPos*cellSize, cellSize/2.0) 
      scene.rootNode.addChildNode(planeNode) 
     } 
    } 
} 


let floor = SCNNode(geometry: SCNBox(width: CGFloat(mazeSizeX), height: CGFloat(mazeSizeY), length: 0.1, chamferRadius: 0)) 
floor.position = SCNVector3(-(CGFloat(mazeSizeX)/2.0)+0.5, (CGFloat(mazeSizeY)/2.0)-0.5, 0) 
scene.rootNode.addChildNode(floor) 

let light = SCNLight() 
light.type = SCNLight.LightType.omni 
let lightNode = SCNNode() 
lightNode.light = light 
lightNode.position = SCNVector3(40,12,15) 
scene.rootNode.addChildNode(lightNode) 


let light2 = SCNLight() 
light2.type = SCNLight.LightType.omni 
let lightNode2 = SCNNode() 
lightNode2.light = light 
lightNode2.position = SCNVector3(-40,-24,-30) 
scene.rootNode.addChildNode(lightNode2) 

var cameraPosition = SCNVector3Make(0.5, 0.5, 0.5) 
let cameraNode = SCNNode() 
cameraNode.camera = SCNCamera() 
cameraNode.position = cameraPosition 
cameraNode.rotation = SCNVector4(-1, 0, 0, π/2) 
scene.rootNode.addChildNode(cameraNode) 

//let view = SCNView() //iPad version 
let view = SCNView(frame: CGRect(x: 0, y: 0, width: 400, height: 600))  //Xcode version 
view.allowsCameraControl = true 
view.autoenablesDefaultLighting = true 
view.showsStatistics = true 
view.scene = scene 
view.backgroundColor = #colorLiteral(red: 0.8078431487, green: 0.02745098062, blue: 0.3333333433, alpha: 1) 
PlaygroundPage.current.liveView = view 

は私が間違っているのは何があるのか​​、プレイグラウンドで描画SceneKitを最適化するために行うことができ描く私のコードはありますか？

Answer 1

可能な限り、私は自分のSceneKitプレイグラウンドをMacOSで動作させます。パフォーマンスはiOSプレイグラウンドにはありません。