Built by Jarek Rossignac with Processing. Source code: delaunay pv2D.

Click to insert new sites
Drag to move them
Drag them out of scree to delete
Press 'f' to recenter and rescale the sites
Press 'd' to hide/show circumcenters
Press 'n' to hide/show sie numbers

Only on local machine:
Press 'w' to print the points
Press 's' to save the points
Press 'l' to load saved points