title: ARCore: 3DCoordinates of all points in a camera frame
body: <p>This is my first time with android development.
  I wanted to get the 3D coordinates of all the points in the current camera frame and store this information along with the image. I came across anchors where you can get position of the anchors wrt to the camera, but you have to tap the screen for that. So I was wondering if there is some way to achieve what I'm trying to do?</p>