仅跟进@sj-r和@Rickster的评论。
@Rickster所提到的关于
coordinateOrigin.scn
的示例代码可以在这里找到:
创建基于面部的AR体验
以下是我之前用过的一个小片段,用于可视化轴:
class BMOriginVisualizer: SCNNode {
init(scale: CGFloat = 1) {
super.init()
let xNode = SCNNode()
let xNodeGeometry = SCNBox(width: 1, height: 0.01, length: 0.01, chamferRadius: 0)
xNode.geometry = xNodeGeometry
xNodeGeometry.firstMaterial?.diffuse.contents = UIColor.red
xNode.position = SCNVector3(0.5, 0, 0)
self.addChildNode(xNode)
let yNode = SCNNode()
let yNodeGeometry = SCNBox(width: 0.01, height: 1, length: 0.01, chamferRadius: 0)
yNode.geometry = yNodeGeometry
yNode.position = SCNVector3(0, 0.5, 0)
yNodeGeometry.firstMaterial?.diffuse.contents = UIColor.green
self.addChildNode(yNode)
let zNode = SCNNode()
let zNodeGeometry = SCNBox(width: 0.01, height: 0.01, length: 1, chamferRadius: 0)
zNode.geometry = zNodeGeometry
zNodeGeometry.firstMaterial?.diffuse.contents = UIColor.blue
zNode.position = SCNVector3(0, 0, 0.5)
self.addChildNode(zNode)
self.scale = SCNVector3(scale, scale, scale)
}
required init?(coder aDecoder: NSCoder) { fatalError("Vizualizer Coder Not Implemented") }
}
这可以这样初始化:
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
let anchorVizualizer = BMOriginVisualizer(scale: 0.5)
node.addChildNode(anchorVizualizer)
}
希望这能对@sj-r提供的答案有所补充,让您有所帮助。