A Universal Polygon Calculator for polygonal paper models
Attention! This program is no longer being maintained. It has been superceded by the Inkscape extension Polygen.
Using Inkscape 1 (beta or higher) you create an .svg file that has two paths that outline silhouette of a simple vase-like shape. upc.pyw used this file as input and creates an .svg file that contains the paths for the shapes necessary to construct the 3d structure, using polygons.
See the file upc-help-sheet.pdf for details