At 06:45 AM 4/23/2008, Stuart Brorson wrote: >Hi -- > >[snip!] > > > Actually, I spoke with the assembly house today and I am not > > convinced that my files are wrong. Instead I am convinced that there > > are *no* rules on how the XYRS data is to be interpreted and the > > assembly house has to figure out how to use your data [...] > > More likely it is a > > matter of setting up the software to use the correct assumptions of > > reference and rotation direction. > >Actually, I think this is a gerbv feature request: I envision a pop-up >window which allows you to specify the base orientation for XYRS data: >12 o'cloc, 9 o'clock, 6 o'clock, 3 o'clock. > >Maybe an XYRS configuration pop-up, including setting the orentation, >also some type of pull-down selectors which allow you to specify which >column (column number) holds each of the X, Y, R, and S data. Maybe >also a pattern to match for board side (TOP, FRONT, vs. BOTTOM, REAR, >BACK). > >Some simple settable parsing parameters might help with situations >like this.
Except that the real problem is knowing *how to set* the parameters! So far, from what I have found, the convention is for a part with pin 1 in the lower left quadrant to be at angle 0 and the rotation specified to be CCW. It certainly won't hurt to allow other settings, but I wonder if they will just create confusion and ways for the user to goof up. I would not suggest adding that until more information is available on what is used. But if it is added, a rotation direction should also be selectable, CW vs CCW. That is one of the points of confusion in my case. The software I am using to generate the XYRS file allows you to select the rotation direction. So I have to go back to the source file to check that I selected it right. Otherwise I would just know that it adhered to the convention. Rick _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
