[英]Scenekit - Add child node (Plane node) to the parent node (sphere node) in front of camera
我正在嘗試將子節點添加到擁有自己的相機的父節點。 在用戶點擊現場時,使用命中測試我將子節點(即平面節點)添加到父節點(球體節點)。 但我不知道為什么子節點沒有正確面對相機。 它在不同的位置看起來不同。 我想讓它解決看着相機的問題。
代碼 :
// Creating sphere node and adding camera to it
func setup() {
let sphere = SCNSphere(radius: 10)
sphere.segmentCount = 360
let material = getTextureMaterial()
material.diffuse.contents = UIImage(named: "sample")
sphere.firstMaterial = material
let sphereNode = SCNNode()
sphereNode.geometry = sphere
sceneView.scene?.rootNode.addChildNode(sphereNode)
}
//Creating texture material to show 360 degree image...
func getTextureMaterial() -> SCNMaterial {
let material = SCNMaterial()
material.diffuse.mipFilter = .nearest
material.diffuse.magnificationFilter = .linear
material.diffuse.contentsTransform = SCNMatrix4MakeScale(-1, 1, 1)
material.diffuse.wrapS = .repeat
material.cullMode = .front
material.isDoubleSided = true
return material
}
@objc func handleTap(rec: UITapGestureRecognizer){
if rec.state == .ended {
let location: CGPoint = rec.location(in: sceneView)
let hits = sceneView.hitTest(location, options: nil)
if !hits.isEmpty {
let result: SCNHitTestResult = hits[0]
createPlaneNode(result: result)
}
}
}
func createPlaneNode(result : SCNHitTestResult) {
let plane = SCNPlane(width: 5, height: 5)
plane.firstMaterial?.diffuse.contents = UIColor.red
plane.firstMaterial?.isDoubleSided = true
let planeNode = SCNNode()
planeNode.name = "B"
planeNode.geometry = plane
planeNode.position = result.worldCoordinates
result.node.addChildNode(planeNode)
}
結果我使用上面的代碼:
添加的平面節點看起來很奇怪
我不知道您是否找到了答案,但是可以使用 SCNBillboardConstraint 釋放節點軸:)
let billboardConstraint = SCNBillboardConstraint()
billboardConstraint.freeAxes = [.all]
node.constraints = [billboardConstraint]
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