I've been working for a few weeks on a node based vector design tool.

It's non-destructive and exports to Sketch and Illustrator.

You can create graphs of Vector Nodes which feed into each other and produce a new Vector shape.

I've created a quick video on how to use the grid component, and also a longer video where I go other a few more features.

Longer overview: https://www.youtube.com/watch?v=dM8fgL-ibjI

Grid tool: https://www.youtube.com/watch?v=BwPYTu8_XwE

I wrote it in Swift 4.2, using Cocoa (It's a Mac app), It also uses Metal for rendering the canvas and a SpriteKit view for the node editor.