I find a way myself. this method works well! (https://gist.github.com/delasign/2b797c6afd819c7cc04ee42158ec5787)

I have a same problem, did you resolve it?

Sorry, I did it. problem is in this code (https://stackoverflow.com/questions/33730468/how-to-convert-camera-extrinsic-matrix-to-scncamera-position-and-rotation)    private func updateNodeMatrix(_ camNode: SCNNode) {     guard let camera = camNode.camera else {       return     }           let modelMatrix = transform     let viewMatrix = SCNMatrix4Invert(camNode.transform) // invert is right     let projectionMatrix = camera.projectionTransform           let viewProjection = SCNMatrix4Mult(viewMatrix, projectionMatrix)     let modelViewProjection = SCNMatrix4Mult(modelMatrix, viewProjection)     nodeMatrix.modelViewProjectionTransform = float4x4(modelViewProjection)   }