Generate zen drawings, also known as triangle/square illusions.
A Pen created at CodePen.io. You can find this one at http://codepen.io/skorper/pen/dpWxxE.
Click on the Instructions button for more info on the page itself.
Double click to create a new polygon.
Single click to create a new node in the polygon.
⎋ Escape to cancel polygon creation.
Single click on the starting point to finish a polygon.
Click and drag a polygon node to move.
Polygon nodes will be synced if they are very close. To unsync, click and drag quickly away from the original point. To sync, drag existing node onto another, or create a node on top of another. Moving synced points should move all points in the area.
Probably obvious, but points must create a convex polygon in order for the pattern to be drawn.