如何根据移动球体的x位置移动摄影机,但同时忽略该球体的y和z坐标?以下是我的代码,用于跟踪三维球体:
let cameraNode = SCNNode()
cameraNode.camera = SCNCamera()
cameraNode.camera?.usesOrthographicProjection = true
cameraNode.camera?.orthographicScale = 2
let constraint = SCNLookAtConstraint(target: sphere)
constraint.gimbalLockEnabled = true
self.cameraNode.constraints = [constraint]
cameraNode.position = SCNVector3Make(20, 20, 20)
cameraNode.eulerAngles = SCNVector3Make(0, 45, 0)
sphere.addChildNode(cameraNode)
我怎么能只跟踪球体的x位置,而不是y和z位置呢?
最佳答案
从sphere
取消相机子项,改为root
的子项。在移动球体的代码中,将相机的x位置设置为球体的x位置。
// code moving sphere
cameraNode.position.x = sphere.position.x