>>>>> "John" == John Luciani <[EMAIL PROTECTED]> writes:
> The 2005xxxx version gives the correct centroid or may just default to > the value of the mark which happens to be the correct centroid for > this footprint. Centroid coordinates are computed by averaging the coordinates of all pads of an element (see hid/bom/bom.c:370). This may coincide with the mark of the element, if the mark is in the geometric center. Parts with uneven number of pads and non-symmetric pad positions will give you headaches, though. I remember reading in some DIN-EN/IEC standard that XY-data should use the geometric center of the package /body/ as reference point for an element. So for many regularly shaped parts, PCB output should be close to what your manufacturer expects. Personally, I would prefer using the element's mark for XY-Data. This would give me some control that the current output lacks. Eg. there are many packages for which centroid of pads won't work well. Such as many SMT transistor footprints. David -- GnuPG public key: http://user.cs.tu-berlin.de/~dvdkhlng/dk.gpg Fingerprint: B17A DC95 D293 657B 4205 D016 7DEF 5323 C174 7D40 _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
