Editor for coordinate systems

I the example project shown here for pinball, box2d and phaser are being used to make this demo. As you can see from the code, the sides of the pinball walls are built with x, y coordinates.

My question is, is there a way to draw/edit the points with some sort of a visual editor? I’m trying to make a series of pinball games, but can’t figure out a proper work flow to edit the layouts of the pinball games.

Any ideas? Thanks.