title: Convert CGPoint from a View to SCNVector3 in sceneKit
body: <p>I am using <strong>AVFoundation</strong> for front camera View. From the <strong>Front camera</strong>, I'm <strong>detecting</strong> the <strong>Face</strong> from each frame using vision framework. From that, I'm able to get <strong>CGPoints of nose</strong>. Now, I want to <strong>add a 3D object</strong> on one of the nose points using sceneKit view and I want to <strong>convert those Nose CGPoint to SCNVector3</strong> so that I can give the position to the 3D object. </p>