Uses math to find the distance to the surface of the nearest shape The demo paints white circles to cover up the blue background or if you press space, it will draw the whole screen. Use Turbo Mode.
Taken from https://youtu.be/PMltMdi1Wzg, https://youtu.be/62-pRVZuS5c, and http://www.iquilezles.org/www/articles/distfunctions2d/distfunctions2d.htm
