Using Unity, I am working on a 3D painter app in an Ink Style. Getting there!
Hold Space Bar while Holding Down Left Mouse Button & Drag Around to Move Camera Up, Down, Left, & Right
Use 1 - 0 to change Paint Brush Style.
Use Up & Down Arrow Keys to change the Painting Plane.
If you paint a Cloud (9 key) rain drops will make Plants on other Brush Strokes that are on the same Plane. Cool!There is also a nice thunder sound to go with it.