為每個SCNNode面孔設置不同的圖像

Question

我想為SCNNode每個面設置不同的圖像，該怎么辦？ 我已經嘗試過了，但是沒有用，所有材料的第一個材料都在上面。 我正在使用Swift 4.2。

我已經試過了：

self.addChildNode(playerNode!)

let head = playerNode?.childNode(withName: "head", 
                                 recursively: true)!

let greenMaterial = SCNMaterial()
greenMaterial.diffuse.contents = UIColor.green
greenMaterial.locksAmbientWithDiffuse = true;

let redMaterial = SCNMaterial()
redMaterial.diffuse.contents = UIColor.red
redMaterial.locksAmbientWithDiffuse = true;

let blueMaterial  = SCNMaterial()
blueMaterial.diffuse.contents = UIColor.blue
blueMaterial.locksAmbientWithDiffuse = true;

let yellowMaterial = SCNMaterial()
yellowMaterial.diffuse.contents = UIColor.yellow
yellowMaterial.locksAmbientWithDiffuse = true;

let purpleMaterial = SCNMaterial()
purpleMaterial.diffuse.contents = UIColor.purple
purpleMaterial.locksAmbientWithDiffuse = true

let WhiteMaterial = SCNMaterial()
WhiteMaterial.diffuse.contents = UIColor.white
WhiteMaterial.locksAmbientWithDiffuse = true

head?.geometry?.materials = [redMaterial, 
                             greenMaterial, 
                             blueMaterial, 
                             WhiteMaterial, 
                             yellowMaterial, 
                             purpleMaterial]

Answer 1

我的解決方案：由於我使用.scn文件來設計播放器，所以我所做的工作沒有用，因此我使用了另一個具有與原始磁頭相同屬性的盒子並將其添加到播放器中（在我刪除了原頭）。 為了創建新的頭像，我這樣做：

    let head = playerNode?.childNode(withName: "head", recursively: true)!

    let head2 = SCNNode(geometry: SCNBox(width: 0.3, height: 0.3, length: 0.3, chamferRadius: 0))

    let greenMaterial = SCNMaterial()
    greenMaterial.diffuse.contents = UIColor.green
    greenMaterial.locksAmbientWithDiffuse = true;

    let redMaterial = SCNMaterial()
    redMaterial.diffuse.contents = UIColor.red
    redMaterial.locksAmbientWithDiffuse = true;


    let blueMaterial  = SCNMaterial()
    blueMaterial.diffuse.contents = UIColor.blue
    blueMaterial.locksAmbientWithDiffuse = true;


    let yellowMaterial = SCNMaterial()
    yellowMaterial.diffuse.contents = UIColor.yellow
    yellowMaterial.locksAmbientWithDiffuse = true;


    let purpleMaterial = SCNMaterial()
    purpleMaterial.diffuse.contents = UIColor.purple
    purpleMaterial.locksAmbientWithDiffuse = true


    let WhiteMaterial = SCNMaterial()
    WhiteMaterial.diffuse.contents = UIColor.white
    WhiteMaterial.locksAmbientWithDiffuse = true

    head2.geometry?.materials = [redMaterial, greenMaterial, blueMaterial, WhiteMaterial, yellowMaterial, purpleMaterial]

    head2.position = head?.position ?? SCNVector3(0, 0.95, 0)
    head2.scale = head?.scale ?? SCNVector3(1, 1, 1)

    head?.removeFromParentNode()

    playerHead = head2

    playerNode?.addChildNode(head2)

Tnx大家：）