Special:
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[DAT] (requires LDraw-compatible viewer)
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Subject:
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Re: LSynth 3 available on kclague.net
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 7 May 2009 17:10:54 GMT
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Viewed:
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8195 times
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In lugnet.cad, Willy Tschager wrote:
> In lugnet.cad, Kevin L. Clague wrote:
> > Please let me know if there are any issues.
>
> the packages ships with an outdated LSynth.mpd file. Could you
> please include this version:
>
> http://www.holly-wood.it/lsynth/betatest/lsynth.mpd
>
> I did just a few tests (I have limited time right now) but it seams
> that at least TECHNIC_TREAD, STRING_HOSE + STRING_BAND and
> TECHNIC_CHAIN_TREAD_38 is still a bit buggy, while
> TECHNIC_CHAIN_LINK is generating a Inside.dat, Outside.dat file. I
> hope to find the time to do more tests in the upcoming days and
> update the betatest page.
Hi Willy,
The recent ldraw part update seems to have remotivated me a bit
and so I found myself (finally) with some time to examine the
lingering problems with the tread synthesis. Starting with the
TECHNIC_CHAIN_TREAD_38 as seen here:
http://www.holly-wood.it/lsynth/betatest/LSynth3.html
I found 2 bugs in the lsynth.mpd file. The reason lsynth complains
about Technic Sprocket Wheel 25.4 and subsequently removes it is
because the constraint definition in lsynth.mpd has a (bad) singular
matrix. This entry should fix it:
0 // Technic Sprocket Wheel 25.4
1 25 0.4 0 0 1 0 0 0 1 0 0 0 1 57520.dat
The treads are also not quite oriented properly in the final
synthesis. This synthesis definition should fix that problem.
0 FILE TECHNIC_CHAIN_TREAD_38.ldr
0 TECHNIC_CHAIN_TREAD_38 SYNTHESIS DEFINITION
0 Name: TECHNIC_CHAIN_TREAD_38.ldr
0 Author: Willy Tschager
0 Unofficial Model
0 SYNTH BEGIN DEFINE TECHNIC_CHAIN_TREAD_38 BAND FIXED 0.035 8
0 // Technic Chain Tread 38
1 0 0 0 0 0 1 0 0 0 -1 -1 0 0 57518.dat
0 // Technic Chain Tread 38
1 0 0 0 -32 0 -1 0 0 0 1 -1 0 0 57518.dat
0 SYNTH END
0
I also found the reason for the incorrect placement of the blue tread
in the TECHNIC_TREAD synthesis at the bottom of the page. However
this is caused by a missing matrix inversion in the code, so the fix
will have to wait for the next executable release. The source code
is updated in CVS if anyone is desperate to try it out. However
there are still more problems in the code that cause the treads to
loop around some of the inner wheels like a wayward rubber band. I'm
hoping to take a look at that this weekend.
Don
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Message has 1 Reply:
 | | Re: LSynth 3 available on kclague.net
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| (...) Hi Don, excellent news! I also plan to move the 3.0 betatest page to its permanent location at holly-wood.it adding download for the constraints and the latest LSynth.mpd so your efforts come at the right time. w. (16 years ago, 7-May-09, to lugnet.cad)
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Message is in Reply To:
| | Re: LSynth 3 available on kclague.net
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| (...) Kevin, the packages ships with an outdated LSynth.mpd file. Could you please include this version: (URL) it looks like Inno doesn't copy the constraint parts to <LDrawDIR>\Parts and the synthesis parts to <LDrawDIR>\Parts\s. There is popping (...) (16 years ago, 4-Mar-09, to lugnet.cad)
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