Startpoint for this project was the brief to design an email icon and the wish to keep a folded angle irrespective of the width, height and thickness of a line.
The solution consists of a set of scripts to draw lines between any given set of points and allow the setting of several parameters while keeping the folded corners consistent.
Since the points are just sets of (x,y) coordinates their width or height can be scaled independently.
The thickness of the stroke can be adjusted and a front and back color can be supplied.
Finally there is a setting to split the line into several strokes.
The typefaces do not exist as installable font files but rather consist of lists of (x,y) coordinates. All of the above mentioned parameters can be applied to an input text.