On 04/10/2012 08:58 AM, Dick Hollenbeck wrote: > On 04/09/2012 11:00 AM, Wayne Stambaugh wrote: >> On 4/9/2012 11:18 AM, Miguel Angel Ajo Pelayo wrote: >>> They seem to be using "wire" for schematics: and "wire" for pcb too. >>> >>> They also enumerate the layers at start. >> Miguel, >> >> Thanks for the eagle files. A layer map at the top of the file is a >> good idea. Something like >> >> (layers >> (0 "NAME_OF_LAYER_0) >> . >> . >> (N "NAME_OF_LAYER_N) >> ) >> >> Only the non-default layers would get saved. > > > The number in the above map can be uniquely produced in order to have a > meaningful, pretty > board file, and does not have to carry forward the uncomfortable layer > numbering which we > are using in the BOARD structure now. We have been wanting to clean up that > uncomfortable > layer numbering for years. There are mapping functions. Even the LAYER > configuration > dialog window was written upside down in FULL ANTICIPATION that this would > get fixed. > Basically the idea was to invert the stack numbering scheme and to close the > gap in one of > the outermost copper layers. Look around, you can find some ugly mapping > functions which > show what needs to be done. > > If in doubt, do what is done in the *.dsn specctra export fomat. They > understood layers, > at least copper layers. > > > My suggestion on any layer map is to: > > a) preserve the specctra/freerouter stuff I put in there in legacy format. > > b) fix up the layer numbering NOW, make the board file pretty, prettier than > BOARD > layering is now, then fix PCBNEW when convenient. > > c) be prepared to simply use the clean numeric layer number in the > *.kicad_brd wires, > which is an index into the layer map, except when the CTL_CLIPBOARD flag is > given to > TRACK::Format() in which case you might either have to give the entire layer > element dope > that you put out in the layer map, as part of the clipboard output, so you > can transport > this wire from one BOARD to another. > > > Why "wire"s not "segment"s? > Google for "printed wire board", it was in vogue before PCB came into play, > about 2 days > before I was board way back in the 1900's. > > > Why *.kicad_pcb over *.kicad_brd ? > > > Because brd is something that lays eggs and flies. > > > Off to work.
Wayne, there is the ability to get to the BOARD data structure from any BOARD_ELEM, using BOARD_ITEM::GetBoard(), so if you create this LAYER_MAP_FOR_THE_FUTURE in the BOARD, then in theory you can get to it from the TRACK::Format() function. _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
