That's by design, though it's not optimal. I abort optimization if a segment is already in progress , to prevent stepping on tp 's toes. Also, the optimization doesn't run on the last segment in the queue, because that segment has the potential to be shortened by a future blend arc.
Both of these problems are fixable. I was looking into how to detect "end if file" in the code, and it seems that the interp_waiting state corresponds to the interpreter running out of valid moves (rather than just having a full queue). If this is the case, then a simple check should be enough to flag the last move. Similarly, I could make blend arc creation work on the unchanged portion of a segment in progress. Rob On Dec 16, 2013 11:34 AM, "sam sokolik" <sa...@empirescreen.com> wrote: > This program (which should be tangent arcs) seems to slow down to a stop > at the beginning of the first and last arc. > > % > (1" square with rounded corners) > G90 G54 G20 > G64 > G0 X0 Y.25 Z0 > G1 Y.75 F50 > G2 X.25 Y1 I.25 > G1 X.75 > G2 X1 Y.75 J-.25 > G1 Y.25 > G2 X.75 Y0 I-.25 > G1 X.25 > G2 X0 Y.25 J.25 > M30 > > > > On 12/15/2013 9:40 PM, sam sokolik wrote: > > Arcspiral.ngc now runs at a peak of 400+ipm - only switches to parabolic > > blends at the very end of the program (probably where the arcs are not > > 'tangent' enough). Awesome! > > > > steve.ngc runs in 7 seconds and seems to slow down down in 2 spots > > (switches to parabolic blends..) Awesome! :) > > > > stellabee1 runs a lot faster but.. When running G64P.005 - I get a > > overage around line 44545. > > > > Here is a short example that shows the errror - if you run the program > > farther - it will have a hand full more of these. says line 23 > > > > http://imagebin.org/282452 > > > > G20 > > G0 Z0.0120 > > G17 G40 > > G80 G90 G94 > > S1000 M3 > > (G04 P3) > > G64P.005 > > F999.0000 > > G18 > > F999.0000 > > G0 X3.0560 Z-0.1065 > > X3.0660 Z-0.0958 > > G2 X3.0800 Y3.3700 Z-0.0853 I-0.0126 K0.0314 > > G1 X3.0940 Z-0.0824 > > X3.1040 Z-0.0889 > > G3 X3.1160 Y3.3700 Z-0.0814 I0.0122 K-0.0061 > > G1 X3.1220 Z-0.0830 > > X3.1260 Z-0.0824 > > X3.1340 Z-0.0735 > > X3.1380 Z-0.0745 > > X3.1420 Z-0.0791 > > X3.1500 Z-0.0941 > > X3.1600 Z-0.1020 > > X3.1660 Z-0.0990 > > X3.1740 Z-0.1000 > > G3 X3.1880 Y3.3700 Z-0.0922 I0.0188 K-0.0172 > > G3 X3.1960 Y3.3700 Z-0.0736 I0.0697 K-0.0189 > > G1 X3.1980 Z-0.0706 > > M2 > > > > Great work!! > > sam > > > > > > > > > > > > On 12/15/2013 03:37 PM, Robert Ellenberg wrote: > >> I think I fixed the issue in the latest commit. It turned out that I > wasn't > >> checking the type of segment properly in an error check, so it would > flag > >> some arcs as not tangent even when they were. Along with some other > fixes > >> to get acceleration right, it should be running at nearly full speed > now. > >> > >> Since my last push, I also added a few optimization fixes that should > run > >> code like stellabee a bit faster. In particular transitions from > tangent to > >> parabolic blending in some cases forced two unnecessary exact stops, > which > >> caused more ripple and slowdown than would otherwise be expected. > >> > >> I also ran the 3D chips code on my Sherline, off of an Atom CPU. I > didn't > >> see any RT interruptions even with the base thread running. My plan for > >> testing next is to set up a version of the test config with a base > thread, > >> and spoof an e-stop. This way, the parallel port can be disconnected to > do > >> build tests. > >> > >> -Rob > >> > >> > >> On Fri, Dec 13, 2013 at 2:44 PM, sam sokolik <sa...@empirescreen.com> > wrote: > >> > >>> I forgot to say - I just pulled your latest changes before testing... > >>> > >>> sam > >>> On 12/13/2013 1:37 PM, Robert Ellenberg wrote: > >>>> Can you send a link to that G code? I'd like to run it myself and see > if > >>> I > >>>> can pinpoint the slowdown. I've identified and fixed a bunch of little > >>>> slowdowns over the last week, so the problem may already be solved. > >>>> > >>>> Thanks! > >>>> Rob > >>>> > >>>> > >>>> On Fri, Dec 13, 2013 at 2:00 PM, sam sokolik <sa...@empirescreen.com> > >>> wrote: > >>>>> Couple of things. > >>>>> > >>>>> arc-arc blends are slower than current TP... current tp does > arcspiral > >>>>> at a peak of 100ipm while the new TP does it at about 70. > >>>>> So current TP http://imagebin.org/282155 1:19 minutes > >>>>> New TP http://imagebin.org/282156 1:51 (you can see it does > parabolic > >>>>> blends) > >>>>> > >>>>> The neat thing is.. If you do a G64P.003 the naive cam detector > >>>>> converts the short arcs to line segments and you get... > >>>>> > >>>>> http://imagebin.org/282156 21 seconds > >>>>> > >>>>> that peaks at almost 400ipm > >>>>> > >>>>> sam > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> On 12/12/2013 2:49 PM, Robert Ellenberg wrote: > >>>>>> I agree with Sam that we're ready for testing from other users. > >>> However, > >>>>>> there are a few features that we may want to add before a merged > into a > >>>>>> main build. One limitation now is that there are a bunch of > >>> configuration > >>>>>> variables that are hard coded: > >>>>>> > >>>>>> - Optimization depth (currently set to ~40 segments) > >>>>>> - Enable / disable arc blend flag > >>>>>> - Max feed override (for sizing blend arcs, assumed to be > 200%) > >>>>>> > >>>>>> Given these extra settings, I'm curious what the best way is get > them > >>>>> from > >>>>>> an INI file to the trajectory planner. For the experts, how are INI > >>>>>> settings propagated into motion currently? Is there an easy way to > tack > >>>>> on > >>>>>> a few more config options? > >>>>>> > >>>>>> Thanks, > >>>>>> Rob > >>>>>> > >>> > ------------------------------------------------------------------------------ > >>>>>> Rapidly troubleshoot problems before they affect your business. > Most IT > >>>>>> organizations don't have a clear picture of how application > performance > >>>>>> affects their revenue. With AppDynamics, you get 100% visibility > into > >>>>> your > >>>>>> Java,.NET, & PHP application. 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