Re: gEDA-user: Ben mode feature request
IMHO and AFAICT STEP is a closed standard, that is, one will have to (probably ?) buy a copy of the standard and then violate the copyright notice prohibiting to disclose (reproduce ?) its contents into some sort of a library (libSTEP ?), which then could be published under LGPL and used by GPL-compatible FOSS. Please correct me if I'm having a wrong impression here, as I would be glad to hear that ;-) ISO 10303 - Automation systems and integration — Product data representation and exchange more commonly known as STEP http://en.wikipedia.org/wiki/ISO_10303 quick search on sourceforge reveals: http://exp-engine.sourceforge.net/ ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: coordinate systems [was: pcb crooked traces]
On Fri, Oct 15, 2010 at 5:15 PM, Stefan Salewski m...@ssalewski.de wrote: On Fri, 2010-10-15 at 11:54 -0700, Andrew Poelstra wrote: The reason for it is that this is generally how drawing canvases work, so from a programmer's perspective, it is simpler to have y pointing down. WHY? Mainly because that has been the standard at least since Televisions were invented. The beam in a CRT scans from left-to-right, top-to-bottom. It's codified in the NTSC standard. So (x,y)=(0,0) is the upper left corner. Why are CRT's like this? Probably because words in books are also oriented left-to-right, top-to-bottom. Maybe if the television had been invented in the middle-east it would be different. I've got several digital image processing books on my shelf, the oldest is from 1972. Every one of them defines (x,y)=(0,0) as the upper left corner of an image. y as positive down, and x as positive right is simply the de-facto standard in digital image processing. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: coordinate systems
- Write a new tutorial. With a few pictures like before, and without any asking for editing text files. You've got a point here. It's been quite some time since I did the tutorial myself. But I still remember that the first part of it was a bit confusing and tedious. I think you are right. The tutorial is in need for a rewrite. I've recently started using PCB and found the tutorial difficult to follow and inaccurate at several steps. I thought I would go ahead and update the wiki to help anyone else who followed the guide after me, but unfortunately it seems that it is not possible to get an account to edit the wiki. I emailed a request for an account (as indicated on the wiki itself) and never received a reply. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
