Incidentally I have written a similar calculator last week and included it in Pcbnew. I used the lemon parser generator but exprtk might be a better choice. That way it should be easy to extend the calculator with support for variables without re-inventing the wheel.
I wanted to mimick the behaviour of Solidworks or CorelDraw; they do not use '=' to introduce a formula. The text is always interpreted as expression and constants may have units. So if I want to move a FP from x:80.442 50mil to the right I write (or append) "80.442+50mil". A difference is that I use the OnTextFocusLost event to start the evaluation and OnTextFocusGet to restore the previous text just before the evaluation (ups, should have been 25mils). The next step would be to integrate the evaluator in the footprint editor as well. But it does not seem to be wise right now ;). - Michael On Mon, Aug 28, 2017 at 2:45 PM, hauptmech <[email protected]> wrote: > or perhaps the python parser is already used in enough kicad builds that > it should be used? > > On 28/08/17 19:56, Tomasz Wlostowski wrote: > >> On 27.08.2017 22:28, Marco Ciampa wrote: >> >>> +1 muparser is already present in many distros: >>> >>> apt-cache search muparser >>> libmuparser-dev - fast mathematical expressions parse library >>> (development) >>> libmuparser-doc - fast mathematical expressions parser library >>> (documentation) >>> libmuparser2v5 - fast mathematical expressions parser library (runtime) >>> >> ...And exprtk is a single header file, which compiles on any OS. There >> is life outside Linux, too. >> >> - my 5 cents, >> Tom >> >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> > > > > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : [email protected] > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp >
_______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
