On Feb 3 2013 11:58 PM, Viesturs Lācis wrote: > 2013/2/4 sam sokolik <sa...@empirescreen.com>: >> Oh - and this is kinda interesting... >> >> http://www.youtube.com/watch?v=eTLs89YPtck >> >> Follow and translate the link in the description.. (interesting >> hack..) > > If anyone needs translation from Russian: > The way this works is a g-code filter, which generates a "reverse" > g-code for a particular g-code line and inserts it _before_ this > particular g-code line with a "/" symbol in front of it. > It seems like a change in Axis GUI script to redefine "zoom-in" and > "zoom-out" buttons, so that it starts taking into account all the > lines with "/" symbol in front of it, when asked to reverse. > > A little comment from me: > It is obvious that this approach can easily reverse _current_ line > being executed. But it is not clear to me, how to back up more than > one line - it might be necessary if the code consists of really tiny > G1 moves.
I think multi-line is doable with stack and maybe adding an internal interrupt (in that code only) which incerts another command just like it did whenver it reaches the end of a reversed move. Then when it moves forward it puts the next command on the stack in place until it is once again empty, then it continues normal execution. I do not have time to really crawl into his code, and have the following question that I could see as being a problem: Can a long move be interrupted and reversed? If so, how does it handle the deceleration? EBo -- ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
