Le 09/06/2014 19:23, Lorenzo Marcantonio a écrit : > On Mon, Jun 09, 2014 at 06:56:25PM +0200, jp charras wrote: >> For guys who are interested by theses extensions (I am thinking a change >> in Gerber Format should have a major interest for everybody), see: > > The extension in themselves are quite interesting. If only to say 'this > is the top layer' inside the file (and not using some other method). > Could nearly replace D356, too. > > The only problem will be acceptance by the tool manufacturers (i.e. will > my fabricator accept X2 gerbers?)
The best way is to ask them for that. > > I think that *maybe* in a few years we will know the answer. Gerber X2 fixes a *major issue*: the stack order. Therefore IMHO, accepting X2 gerbers is not a matter of years. > > I skimmed the specs and, knowing the tools out there, X2 is *not* > backward compatible. Most of the tools out there will probably choke > horribly on the first %TF or %TA they encounter. The 'short header > option' IIRC is there just to make the gerber readable anywere... It > would be a truly backward compatible specification if they used some > structured form of G04 (something like the structuring in postscript). > IIRC it's not written anyway that 'any unknown mass parameter should be > ignored' After loading a GERBER X2 file: Gerbview does not choke (run fine). Gerb does not choke ( has only some warnings) GC-Prevue does not choke ( has only one warning) > > Drill files as plots are cute but nothing extraordinary; they could have > their use but I don't see them replacing excellon or s&m tapes... Excellon works fine, no need to replace this format. > > I think a good way to implement attributes would be to make them > optional (maybe putting them in a G04 block as a debug/documentation > aid). > > PS: somewhere in there they say that kicad does planes in the wrong way (who > cares... I've seen worse things:D) What do you mean? currently, Kicad does not know planes. If you are talking about negative objects in Gerber files examples, I do not see any reason to use negative objects in gerber files (at least for copper layers): this is known as a bad practice. > > PPS: in the list of the standard attributes there is a list of layer > types; that could be very useful for the other thread! I agree. In examples, there is also an idea for gerber file names. -- Jean-Pierre CHARRAS _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
