kicad-developers team mailing list archive

[easyw <easyw@xxxxxxxxxxxx>]

> I understand this will break "forwards compatibility" if opening a v5 
> file from v4. 
and this break will be also 'silent'
> Sometimes such changes are unavoidable.point of views ... as I already pointed out I don't remember how many 
times, this changing is started for a wrong assumption: that 3D viewer 
and exporters would have failed in managing the 3D offsets... which is 
wrong... this wrong assumption started a misunderstanding of the issue 
itself.
Moreover the internal representation of a data that was just simple 
correctly managed is a real formal issue and not a user issue...
So, IMO, this was something absolutely avoidable instead of something 
unavoidable...
but this is obviously my point of view...

On 11/22/2017 11:16 PM, Oliver Walters wrote:
> I understand this will break "forwards compatibility" if opening a v5 
> file from v4. Sometimes such changes are unavoidable.
>
> On Thu, Nov 23, 2017 at 8:44 AM, easyw <easyw@xxxxxxxxxxxx 
> <mailto:easyw@xxxxxxxxxxxx>> wrote:
>
>     This option is in fact a smooth transition for footprints...
>     but it will break the readability of new boards by previous release
>     of kicad... no way back to previous releases, even to be just read...
>     Which is better then?
>     Library stuff are quite delicate to be touched IMO...
>
>     On 11/22/2017 10:23 PM, Oliver Walters wrote:
>
>         Wayne I still have an issue with silently breaking files. Using
>         an "offset" parameter (but reading "at" for compatibility) does
>         not break anyone's models and there is absolutely no confusion
>         about which is mm and which is inches. Incidentally I think
>         "offset" is a better name, it implies relative position rather
>         than absolute (but that's neither here nor there).
>
>         On Thu, Nov 23, 2017 at 7:55 AM, Marcos Chaparro
>         <nitrousnrg@xxxxxxxxx <mailto:nitrousnrg@xxxxxxxxx>
>         <mailto:nitrousnrg@xxxxxxxxx <mailto:nitrousnrg@xxxxxxxxx>>> wrote:
>
>              On Wed, Nov 22, 2017 at 11:59 AM, Wayne Stambaugh
>              <stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>
>         <mailto:stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>>> wrote:
>
>                  Yes, it is a change that will break some users 3D models
>                  but I think the long term benefit outweighs the short term
>                  annoyance.
>
>
>              It will break most of my boards. I won't complain because I
>              appreciate the effort and I welcome *every* improvement, but be
>              prepared for some very rough comments out there.
>
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