My first VR app was based on the Leap Motion Pinch Draw demo, where you can draw in 3D by pinching your fingers together. I expanded it to include a menu which appears when you look at your palm. You can pick a pen colour and size by pressing the menu buttons with your other hand. There’s an Undo button that will remove the last 3D pen stroke, and a Clear button to remove all of them.
Nowadays hand tracking is built right into VR headsets like the Quest 2, so experiences like this are much more accessible (and easier to develop). Back when I made this, the hand tracking was achieved by duct-taping a Leap Motion camera to my VR headset!
