I had a chance to do that at work, a few years ago and wrote these scripts for Rhino 4.
wirefont.zip (55.6 KB)
The toolbar contains two buttons: the first is for drawing texts. It uses a simple ‘font’ that worked for me.
The character set only supports uppercase letters plus numbers
If the char set is OK but the font is not … please keep reading …
The second button lets you store your own font: just draw the font like in the attached 3dm file: the characters have to be clearly separated and the last one must be a ‘jolly’ char that the script uses for chars outside its char set. The script reads the curves and writes some code to the clipboard.
Then you have to save that code into the wirefontlib.rvb file … or use a different name and edit the button command text.