On Thu, Dec 8, 2022 at 10:39 PM Jon Elson <el...@pico-systems.com> wrote:
> On 12/8/22 20:12, Greg C wrote: > > 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)? > > > There were complaints that very long G-code files could take > up to 45 minutes to render, and apparently you could not > begin running the program until that had completed. > Just to make sure we are in alignment, I am talking about the live plotter. AFAIK, that's information is populated in real time while running the program. I tested this by using eoffsets to deviate from the tool path while the program is running. If the information was populated ahead of time, there's no way my deviations would be plotted properly, which they were. > Jon On Thu, Dec 8, 2022 at 9:27 PM Sam Sokolik <samco...@gmail.com> wrote: > Iirc it was just to make the preview more responsive... > Interesting. I bumped it back to the original setting from 2009, and in my albeit brief testing, I see no appreciable difference other than the tail of the tool path does not unwind anymore. There didn't seem to be any noticeable effects on memory resources either. I wonder if anyone is opposed to adding a 0 and bumping it up 10x? > > 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 > _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
