Indexed Face Set Interpreter

Enter the mesh in the box on the left, press [Do It] (or hit return in the textbox)
and see the result in the box on the right.
The vertices are of the form v x y z. The coordinates should range between -1 and 1.
The faces are of the form f 1 2 3 and reference vertices, in order, base one.
Fans are of the form f 1 2 3 4 ... and strips are of the form s 1 2 3 4 ...