Hi Sam, I have an entry for line-arc intersections, which have the same limitations as arc-line (just the order is flipped).
-Rob On Thu, Oct 24, 2013 at 11:48 AM, sam sokolik <[email protected]>wrote: > you are missing arc-line transitions in your table.... is this an > oversite? > > > https://www.dropbox.com/s/o5he7ijpplkvc8r/Trajectory%20Lookahead%20with%20Arcs.pdf > > thanks > sam > > > > On 10/24/2013 10:08 AM, Robert Ellenberg wrote: > > It is possible to do it on the parabolic blends as well. That was > actually > > the original plan. The downside of doing it that way is that the it's > hard > > to isolate tangential acceleration from the total acceleration, since > they > > aren't always perpendicular. It also makes the trapezoidal velocity > profile > > a bit more complex. I'm hoping that tangent arcs solve enough of the > > slowdown that we won't need to optimize the remaining parabolic blends. > > > > Rob > > On 24 October 2013 15:00, Robert Ellenberg <[email protected]> wrote: > > > >> The good news is, we don't have to do any optimization for the > > conventional > >> blends. The idea of using arcs is to create a tangent path that doesn't > >> need any blending, but there will be cases where that's not easy, so we > >> fall back to traditional blending. In this case, the segments start and > >> stop at zero speed, so we don't need to do any optimization. > > I think I am confused about the link between blending and lookahead. > > > > Is the back-propogation of the maximum speed (which I think was your > > "rising tide" optimisation) only possible with the circular arc > > blends, or can it also be applied to the current parabolic blends? > > > > Of course, if you would rather do the work than explain the work, that's > > fine. > > > > -- > > atp > > If you can't fix it, you don't own it. > > http://www.ifixit.com/Manifesto > > > > > ------------------------------------------------------------------------------ > > October Webinars: Code for Performance > > Free Intel webinars can help you accelerate application performance. > > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > > from > > the latest Intel processors and coprocessors. See abstracts and register > > > > > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk > > _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > ------------------------------------------------------------------------------ > > October Webinars: Code for Performance > > Free Intel webinars can help you accelerate application performance. > > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > from > > the latest Intel processors and coprocessors. See abstracts and register > > > > > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk > > _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
