Hi Mark, Thanks for your email.
Could you please explain more about the relation between "Change the measurement store from 32-bit to *64-bit*" and "128-bit integer math support in processors"? And why did Kicad choose integer as internal measurement resolution? >mm is not adequate to express the resolution of position data required for a board design. How about this? use mm for internal measurement resolution, but use nanometer or *double(instead of integer)* for board design. Last, so that means there is no way to handle this issue? On Mon, 25 Nov 2024 at 19:21, Mark Roszko <[email protected]> wrote: > >This means it is possible to create boards up to approximately 4 meters > by 4 meters > > Yes, KiCad is limited to 4x4 meter boards currently. > > > Change the measurement store from 32-bit to 64-bit, so Kicad can > support a larger board. > > This is not an easy task in the slightest. Specifically because we can't > get 128-bit integer math support in processors, and many compilers do not > support 128-bit integers. I think gcc has some experimental support. > > > Change the resolution of all objects to mm > > mm is not adequate to express the resolution of position data required for > a board design. > > > > Basically the bug here is we simply do not tell the users the DXF is > beyond our board support limit. > > > On Mon, Nov 25, 2024 at 5:07 AM Liang Jia <[email protected]> > wrote: > >> Hi All, >> >> I am writing to inquire about the challenges we are facing when importing >> DXF files which contain large numbers into our system. >> >> I have noticed that when the number exceeds a certain threshold(such as >> 4437 mm), the import process results in an int overflow error. >> >> I did the search below: >> 1. Found that there was a ticket to track it, but it seems *it still >> opens*. >> https://gitlab.com/kicad/code/kicad/-/issues/12392 >> >> 2. From the Kicad document: >> The internal measurement resolution of all objects in KiCad is *1 >> nanometer*, and measurements are stored as *32-bit integers*. This means >> it is possible to create boards up to approximately 4 meters by 4 meters >> I think the *root cause* is here: Kicad tried to convert the DXF number >> into nanometer, but those numbers exceeded the limit of integer. >> >> Questions: >> 1. Is there any workaround for this case, and let Kicad import those >> files successfully? >> 2. If I want to fix ticket 12392, what should I do? >> Change the measurement store from 32-bit to 64-bit, so Kicad can >> support a larger board. >> Change the resolution of all objects to mm >> >> Looking forward to any comment or workaround. >> >> Sincerely >> Liang >> >> -- >> You received this message because you are subscribed to the Google Groups >> "KiCad Developers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion visit >> https://groups.google.com/a/kicad.org/d/msgid/devlist/CAE0Ak8bd%3DgDwW%3DDWVXH-TKj%3Dr4nsgW370aNqB6PbP7T8b2QU6A%40mail.gmail.com >> <https://groups.google.com/a/kicad.org/d/msgid/devlist/CAE0Ak8bd%3DgDwW%3DDWVXH-TKj%3Dr4nsgW370aNqB6PbP7T8b2QU6A%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "KiCad Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/kicad.org/d/msgid/devlist/CAJjB1qKoN689BoyB1uWpWYmDCpbaCRKCyW2qmnBOoG5Au_Nnfg%40mail.gmail.com > <https://groups.google.com/a/kicad.org/d/msgid/devlist/CAJjB1qKoN689BoyB1uWpWYmDCpbaCRKCyW2qmnBOoG5Au_Nnfg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "KiCad Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/kicad.org/d/msgid/devlist/CAE0Ak8bmAyB7ciCe6nrps8gw0meXgaj25r5Zq-o2Z9x_-8CFDA%40mail.gmail.com.
