Does any software out there allow for you to take a 2D photograph and then make CAD drawings on top of it? This would allow you to make a 2D image into a 3D printable image, or take photos of 3D things and then modify the 2D image via CAD drawings and dimensions that you get from measuring it, and print out a replica. I've seen it done before, but don't know which software package allows for it. Does anyone?