Iirc it was just to make the preview more responsive... On Thu, Dec 8, 2022, 8:16 PM Greg C <gregory.d.c...@gmail.com> wrote:
> Good evening all, > > Recently on the forum turbostew brought up an issue that I've noticed in > the past (in PathPilot) where on large cut files, the backplot starts to > turn back to white at the beginning of the previewed cut paths. Thread > < > https://forum.linuxcnc.org/qtvcp/41566-seems-like-a-buffer-size-limit-on-toolpath-highlighting?start=0#200370 > > > > What is actually happening is the max number of points is reached and the > oldest points are falling off as the new points are added. Since the > number of MAX_POINTS is defined in emcmodule.cc, this would affect all > guis. emcmodule.cc L1981 > < > https://github.com/LinuxCNC/linuxcnc/blob/131761f462ff0194a5403500f03f1f47c5899896/src/emc/usr_intf/axis/extensions/emcmodule.cc#L1981 > > > > Back in June of 2009 Jeff Epler lowered this value from 100000 to 10000, > and unfortunately the commit doesn't give any details as to why. Jeff's > Commit > < > https://github.com/LinuxCNC/linuxcnc/commit/13e76953aaa61da0c560418cfbc117436d8c9f38 > > > > I wonder if anyone has insight to: > 1. Why MAX_POINTS was lowered? > 2. If I increased this back to 100000 or even 1000000, are there any > potential negative side effects (I didn't see anything obvious in the brief > testing I did)? > > Thanks, > Greg > > P.S. the way the backplotter "unwinds" on the beginning of the preview > while adding to the current points of the cut path reminds me of the old > computer game "Snake". So I wonder if I increase the length of the snake, > is there potential for it to "crash" into itself. 🙂 > > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
