Position a SceneKit object in front of SCNCamera's current orientation

Question

I would like to create a new SceneKit node when the user taps the screen, and have it appear directly in front of the camera at a set distance. For testing, this will be a S

Answer 1

Making it simple:

let constraint = SCNTransformConstraint(inWorldSpace: true) { node, transform -> SCNMatrix4 in
    let distance: Float = 1.0

    let newNode = SCNNode()
    let worldFront = self.sceneView!.pointOfView!.simdWorldFront * distance

    newNode.transform = self.sceneView!.pointOfView!.transform
    newNode.transform = SCNMatrix4Translate(newNode.transform, worldFront.x, worldFront.y, worldFront.z)

    return newNode.transform
}