For anyone who doesn't already know about an application called Tilt Brush, go check it out. Its awesome! http://www.tiltbrush.com/#intro
Unfortunately, there's no download for Tilt Brush, and no announced release date (that I know of). So this morning I figured I would make a quick simplistic drawing app similar to it.
I'm not sure if it uses the same technique as I used for 3d drawing, but I would imagine its pretty close. This method uses only the mouse.
you start with a 2D plane and a cursor. To draw, just click and hold the left mouse button.
To draw in 3D space, lean forward and backwards and the plane will move with you.
You can Rotate the plane by holding down the right mouse button. You can also move it around by holding down the middle mouse button.Download (windows): Quick Draw 3D (v1.6)
-- Controlls --
R key: Re-center cursor
1 Key: Set default rotation of the drawing
Left Click: Draw
Middle Click: Move plane
Right Click: Rotate plane
Scroll Wheel: Zoom plane distance
(Mouse + Alt Key)
Middle Click: Move Drawing
Right Click: Rotate drawing
Scroll Wheel: Zoom drawing distance
Hold Alt: enables object control and will allow you to manipulate your drawing just like the drawing plane.
Hold Space: shows options.
Ctrl Key: locks the drawing plane in place. (Click to toggle)
Also, show some support to the team behind Tilt Brush. They deserve it!