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[09:19:23] <awallin> mhaberler: hi, it seems there was a lot of progress with the new rt-platforms!?
[09:20:33] <mhaberler> let me put it this way: there's a lot of code changes; it remains to be seen how that maps onto progress ;)
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[09:22:01] <awallin> ok.. would be nice to support something newer than 10.04 soon..
[09:22:43] <mhaberler> Ithe important part is getting the basic support in place, so that eventually it becomes a stream of patches, not the disparate efforts with few gain for others (there are I think four Xenomai ports of varying quality out there, and none found its way back; similar for preempt)
[09:23:18] <mhaberler> oh, absoulutely, this 10.04 thing is a joke - I cant event build 3.x kernels on it anymore
[09:23:57] <mhaberler> six months I think to end of life; kinda porting to Windows XP
[09:25:50] <mhaberler> the Xenomai kernelthreads port works nicely, but I committed a major goof - I just ported over from RTAI to the next best API (there are several 'skins' in Xenomai) and only after it worked I figured that is a deprecating API too :-/
[09:26:16] <awallin> oh :)
[09:26:46] <mhaberler> but fortunately the change to the longterm API which is supposed to survive the Xenomai/RT_PREEMPT merge is well underway and not that difficult
[09:27:31] <mhaberler> yeah progress;) the light at the end of the tunnel is from the train coming towards us ;)
[09:29:08] <awallin> yeah. I guess rt-preempt is the strongest of the platforms? i.e. likely to survive longest? and it should be ok at least for servo machines?
[09:29:30] <mhaberler> I think the RT delay spike issue can be nailed but it is going to require some determined attention (I get better consistent latencies on the raspberry than on the atom - this cant be right)
[09:30:23] <mhaberler> I think so, yes, but driver support is 'TBD' and largely untested - whereas with Xenomai kernelthreads its pretty much a drop-in replacement
[09:32:55] <mhaberler> well strongest; I think rtapi_app which was the base for the simulator mode suddenly becomes the main workhorse for the userland thread styles, so it will need some attention - reliable repeated startup/shutdown, these nasty householding chores
[09:33:49] <awallin> hm, right. too "deep" stuff for me... I'd just like to see linuxcnc move to 12.04lts :)
[09:33:58] <mhaberler> right
[09:34:29] <awallin> I guess the cutting-simulation work could go into linuxcnc, I just would need time to put a demo together of how insanely great it is :)
[09:34:50] <mhaberler> that would be phantastic ;)
[09:35:28] <mhaberler> dont you have some pocketing code which I can sneak into remapped G-codes so folks see how insanely great remapping could be ;-?
[09:36:15] <awallin> openvoronoi isn't really complete without arc-support. that's not finished.
[09:36:34] <mhaberler> oh. polyline offset curves?
[09:36:36] <awallin> points,lines,arcs would be a "closed set" under the offset operation (I am not a mathematician...)
[09:36:54] <awallin> yeas points and line input work fairly well
[09:36:58] <mhaberler> that *is* some nasty problem
[09:37:38] <awallin> let's say non-trivial :)
[09:37:41] <mhaberler> btw the dxf2gcode work is seeing some new thrust; ported to Qt4 - I had worked on it with Christian for a while, and polylines was where we got stuck
[09:38:06] <awallin> are there screenshots of that?
[09:38:22] <mhaberler> just pull from the google code site and give it a spin
[09:38:37] <mhaberler> http://code.google.com/p/dxf2gcode/
[09:38:44] <awallin> hm, ok
[09:39:02] <mhaberler> there's a very talented french fellow now on the case
[09:39:02] <awallin> that uses SVN ?
[09:39:09] <mhaberler> duh, yes
[09:40:07] <mhaberler> it might make sense to touch base with Christian Kohlöffel; very nice chap and he knows what he's doing
[09:40:35] <mhaberler> this is strictly 2.5d but stil very useful
[09:41:25] <mhaberler> in his company they built landing flaps systems for Airbus, so there's some basic CNC knowledge I'm lacking;)
[09:41:34] <awallin> so would something like this be useful?
https://picasaweb.google.com/106188605401091280402/OpenVoronoiExamples#5704535548267087346
[09:41:55] <mhaberler> wildly so, yes
[09:42:22] <mhaberler> we had hoped that heekscad takes off and replaces dxf2gcode, but that is in decline IMO
[09:42:31] <awallin> but that has only lines as input. no arcs or splines (I guess those can be defined in DXF?)
[09:42:53] <mhaberler> yes, he has arc splitting in place (I *think*)
[09:43:07] <awallin> yes there is now some activity with freecad, but it goes slowly. These basic computational geometry things are non-trivial enough to deserve to be in their own libraries anyway
[09:43:31] <mhaberler> I think he reads arcs but translates into line segments internally
[09:43:55] <mhaberler> right, the heekscad dropouts now hang out at freecad
[09:44:33] <awallin> maybe I will shoot an email to the dxf2gcode list..
[09:45:16] <mhaberler> yes, I think thats a good idea
[09:45:56] <mhaberler> Chris has a very german engineer attitude wrt quality which is a good thing
[09:46:50] <awallin> ah, ok :) well openvoronoi has tests, and almost 100% code-coverage
[09:48:02] <mhaberler> the rough part will be Chris's internal polyline representation methinks
[09:48:14] <mhaberler> and how that maps onto your code
[09:48:52] <awallin> something like this is useful
http://www.cs.cmu.edu/~quake/triangle.defs.html
[09:49:10] <mhaberler> but if you guys can pull that off you both deserve the OpenCNC Purple Heart ;)
[09:49:22] <awallin> i.e. define (x,y) points separately. then define lines that reference the point-list
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[09:49:55] <mhaberler> talk to Chris; that part I never fully understood, but look - I'm just an MBA
[09:51:03] <awallin> ok
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[13:21:21] <jthornton> opps linuxcnc.org give this Database Error: Unable to connect to the database:Could not connect to MySQL
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[13:59:54] <cradek> looks ok now... just another dreamhost hiccup?
[14:01:31] <jthornton> seems logical
[14:01:36] <jthornton> works for me too now
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[20:11:02] <seb_kuzminsky> mhaberler: i too would like it if you un-broke the build with redis
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[23:20:38] <mhaberler> seb_kuzminsky: is your definition of 'broken' also 'make -j6' keels over?
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