Dave N6NZ wrote:
On Aug 11, 2010, at 12:28 PM, John Griessen wrote;
What's a good reference about DXF?
Arghhh...
.
.
.. the structure of dxf... Imagine a design committee consisting entirely of
passive-aggressive, 'B' ark chimpanzees
that were only convinced to join the project for the meeting donuts. Now
imagine the file format they would specify. Now
imagine that file format evolved to support things that were never originally
intended. That is dxf.
.
.
certain 3D entities are *not* documented,
they are binary blobs and you can only get the spec by paying for a license
from Autocad and signing an NDA. So no open source
dxf library will ever be able to handle all of dxf. My immediate goal is to
write a library that can make sense of all 2D
information in a complete and coherent way, provide a Pythonic interface for
reading and writing dxf, and gracefully ignore or
perhaps read-and-blobify anything it doesn't understand without crashing or
hanging.
Sounds good. Does the blobify function you imagine get the physical max
boundaries of the unknown correct?
I know someone else working on getting 3D usable by FOSS tools by way of a
common open format
available as a standard or defacto standard. In electronics it seems defacto
standards are better than official ones, so...
He's looking at Rhino's OpenNurbs definitions in c++. OpenNurbs.org has the
code, public domain. He's considering forking
and licensing it GPL.
John
--
Ecosensory Austin TX
_______________________________________________
geda-user mailing list
geda-user@moria.seul.org
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
