Mapping GEOS fonts to their nearest modern equivalents

[gitjeff2]

Neat project. I was looking through your code to learn how it worked and spotted your "work in progress" regarding fonts.

Some rough equivalents would be:

GEOS Font	Modern Font
Barrows	Courier
Birge	Mistral
California	Helvetica
Callaghan	Stencil
Cory	Data 70
Dwinelle	Old English
LeConte	Mactype
Lewis	Playbill
Ormond	Microgramma Extended
Oxford	Monotype Tektura
Roma	Times
Superb	Broadway
Tolman	Comic Sans

Also, the GEOS Font Pack I Manual has been preserved as a PDF. It contains printouts of every font in the collection. You could probably match up font equivalents by eye, given enough time. It appears there was a 2nd font pack, but I can't put my hands on it or the manual.

[karstenw]

I updated the fontmapping dict with your suggestions but it's still unused. In the meantime this catalog became available:
https://www.lyonlabs.org/commodore/onrequest/geos/geoFont.pdf

Perhaps it could serve as a fontID reference.

I'm still looking for descriptions of the following file formats:

• geoPublish
• geoCalc
• geoFile

[gitjeff2]

That's a very good idea @karstenw.

I'm new to Python. Among other things I want to use it to look "under the hood" at old binary formats so that I can understand them, including old GEOS files. I've tried to dig up a formal geoPublish format specification without any luck.

At this point I'm in the early stages of trying to understand geoPublish files specifically with little more than a hex editor and a notebook. I'll be glad to share my notes and any test code with you. Is there somewhere specific you'd like me to post my notes?

[karstenw]

Writing an issue here would be fine.

At least I revisited geosLib today and fixed a crash in the font converter.