ios - 在 ARkit SCNNODE 中的 3D 对象上重复 X 轴纹理 - SWIFT

Question

我想将纹理移动到当前场景中的 SCNode 上。

我当前正在对节点进行动画处理，但我希望纹理在对象上运行而不是对其进行动画处理。

let moveup = SCNAction.moveBy(x: 0.01, y: 0, z: 0, duration: 1)
moveup.timingMode = .easeInEaseOut
moveup.speed = CGFloat(20.5)
let moveDown = SCNAction.moveBy(x: -0.01, y: 0, z: 0, duration: 1)
moveDown.timingMode = .easeInEaseOut;
moveDown.speed = CGFloat(20.5)
let moveupSequence = SCNAction.sequence([moveup, moveDown])
print(moveupSequence.duration, moveupSequence.speed)
WaterNode?.runAction(moveupSequence)

这是我为对象设置动画的代码。我需要知道如何访问纹理并将它们移动到 X 轴。

Answer 1

有contentsTransform Material 特性

let action = SCNAction.customAction(duration: 1) { (node, elapsedTime) in
    let c = node.geometry?.materials.first?.diffuse.contentsTransform
    node.geometry?.materials.first?.diffuse.contentsTransform = SCNMatrix4MakeTranslation((c?.m41)! + 0.01, (c?.m42)!, (c?.m43)!)
}