SCARM - Simple Computer Aided Railway Modeller

Any questions about designing a model railway layout or problems with track work.
Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Sun Sep 26, 2010 10:14 pm

@noel: Thank you for the link and notes above.

I will try to start with Peco library fulfilling in 2-3 days. To test the library, I need some picture, like Hornby geometry file to be sure that everything is OK.

The feature allowing display of name labels instead of part numbers is planned and will be available in the next release of SCARM. I will need your help if there are already perceived names for tracks with given part numbers for any track system, used in UK.

Simple screenshots as BMP files are available in 3D view for now. In the future, screenshots of the plot will be also available as BMP and JPG files. Save and Open functions are also on the way.

Regular printing will be available in the next month, I hope. Full size printouts will take more time to be released – there are many things to be considered for making quality full size printout. And there will be lack of paper for the tests :)

Anyway, next version will be released in several days and I will try to include Peco library in it.

Mixy
From Bulgaria

noel
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby noel » Mon Sep 27, 2010 4:39 am

+

Try these links for Hornby track geometry.

http://static.hornby.com/files/track-geometry-316.pdf

http://www.hornby.com/forum/forum-threa ... read-L-924

http://www.railwayforum.net/showthread.php?t=588

For Atlas HO

http://www.modelrailroadforums.com/foru ... php?t=6504


I opened some of the LIB files - the format is clear, is it possible
to plug a copy for variations?


+

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Mon Sep 27, 2010 10:09 am

Yes, I will post the format specifications of the library files (later today), but please note that it is not finished yet and some things may be changed in the next releases of SCARM. There will be a feature for custom tracks creation by users and adding more tracks to the current libraries, but it will be available after completing of more important things in the program.

Mixy,
from Bulgaria

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Roger (RJ)
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Roger (RJ) » Mon Sep 27, 2010 11:01 am

I've just had a quick try with it and like it quite a lot. One thing I found odd was the 3D view. For me it moves opposite to what I would expect EG when the mouse wheel is pressed and dragged downwards, the track moves upwards. I can see why this happens (moving the viewpoint rather than the track/baseboard) but to me it seems odd. Perhaps you can add an option in the menu to allow the user to define how mouse movements are interpreted. If not, I'd probably get used to it pretty quickly.

Good luck with future developments.

noel
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby noel » Mon Sep 27, 2010 3:13 pm

+

You may wish to consider compatability writing file formats.
Particularly JRMI's Panel Pro and other add-ons for that suite.
It is popular, and will quickly expand your user base for feedback.

I like particularly being able to "nail" turnouts - when I have wasted
so much time chasing them round in circles and finally abandoning
the attempt with that software!

I think "nailing" to the "Start" is the quick way to go. In no time at all,
I had a good representation of a difficult area I have to deal with, and
now I see how it will all fit. Thank you.

I look forward to the spec' for the LIB file parameters.

For geometry, you should ask for JPG' scans of other makers turnouts.

I attach an interesting one no longer listed by PECO - it is the
OO Set Track Range I believe is common with Hornby.

ST 242-RH ST243-LH.jpg
ST 242-RH ST243-LH.jpg (154 KiB) Viewed 3247 times


+

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Mon Sep 27, 2010 5:07 pm

@noel: You may download http://www.scarm.info/temp/BTTB-TT.lib library which is identical to the build-in BTTB-TT, but it includes detailed comments about file format, specifications and usage. You can open it in Notepad and use it as a base of experiments or for creating new libraries. To see the applied changes in particular library, save it and choose it again in SCARM. If you create new library, restart the program in order to load newly created file.

At the moment I have no plans for compatible file formats, but in the future this can be changed.

Geometry information (dimensions, angles, radii and other) must be extremely exact. Otherwise errors will run up. For example, look at Tillig specifications in their catalogues – they have all the needed info with all dimensions and sizes:

http://as.rumia.edu.pl/tt/kat/katalogi.asp?poz=158&kat=2007
http://as.rumia.edu.pl/tt/kat/katalogi.asp?poz=159&kat=2007
http://as.rumia.edu.pl/tt/kat/katalogi.asp?poz=160&kat=2007

Geometry examples:

http://as.rumia.edu.pl/tt/kat/katalogi.asp?poz=165&kat=2007

So the track system producer must provide this info. Even if we do a measurement on a real turnout, we will do a mistake, for sure. If you try to reproduce Hornby geometry file with SCARM, you will discover that curved turnouts are not overlapping at the same position with other curved tracks – the difference is couple of millimetres, but it is enough for appear as a mistake in the program. And this is true not only for SCARM, but also for other universal layout design software and some other track systems.
When I start with Peco, I will check how their geometry info will fit into SCARM file format rules :)

@Roger: Thank you for trying SCARM and for note about movement in 3D view – I will add an option for inverse movement in the next release of the program, as you suggest :)

Mixy,
from Bulgaria

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poliss
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby poliss » Mon Sep 27, 2010 5:23 pm

Peco have also put turnout plans on their websit for OO/HO Streamline Code 75, OO/HO Streamline Code 83 and N Gauge Streamline Code 80. http://www.peco-uk.com/page.asp?id=pointplans

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Mon Sep 27, 2010 5:51 pm

Thank you, poliss, but those plans must be measured by hand, because they have only one dimension - length. I will try to use the table, posted by noel - there is much more info about the system.

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Mon Sep 27, 2010 7:12 pm

Using Track Conversion table, I setup a Peco OO Set-track library for SCARM. :)

Mixy,
from Bulgaria

EDIT: Library link removed, because the installer already contains it.
Last edited by Mixy on Sun Dec 30, 2012 7:03 pm, edited 1 time in total.

noel
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby noel » Mon Sep 27, 2010 8:16 pm

+

Mixy wrote:Using Track Conversion table, I setup a Peco OO Set-track library for SCARM. :)

Mixy,
from Bulgaria


I am getting an HTTP:403 Forbidden

also with - http://www.scarm.info/temp/BTTB-TT.lib (SORRY - THIS DOES LOAD FROM THE ADDRESS BAR!)

Peco.lib still no access. - can you put the full url.

+

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Mon Sep 27, 2010 8:42 pm

If the link still gets an error, please try to download it directly from http://www.scarm.info.

Mixy,
from Bulgaria
Last edited by Mixy on Sun Dec 30, 2012 7:04 pm, edited 1 time in total.

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Tue Sep 28, 2010 12:24 pm

New release of SCARM is out :)

You can download the new version 0.2.5 from http://www.scarm.info.

The most important improvement is Save / Open functionality, so now you can save your work and restore it later.
Hornby OO and Peco OO Set-track libraries are also built-in.

Mixy,
from Bulgaria

noel
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby noel » Tue Sep 28, 2010 5:26 pm

+

I have copied and pasted the Flex and Semi-Flex details from the Hornby.Lib to the Peco.Lib.
- and now we are "turbo-charged"!

Overall geometry becomes fuzzy with flexible track to join unequal ends. I have just juggled it,
with this addition to the Peco.lib, and SCARM deals with it nicely.

All this is Code 100.

It would be a real expansion of capability for all those running at 16.5 to have the basic Peco
SL-80 to SL99 library too - where we have "small/medium/and Large", Crossovers/Slips, Y's
and 3-ways.

METHODOLOGY
With turnouts in hand, I place where the turnouts are to be, generally line them up - and join
with flextrack. I think this could already be within SCARM. It would be handy in the software to
make minor repositioning of turnouts with the flextrack staying attached.

+

noel
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby noel » Tue Sep 28, 2010 6:13 pm

+

PROBLEMS

Hornby R614/615 do not attach to turnouts in correct orientation
- tend to fix 2-ends to 2-ends.

Selecting EDIT/undo, and with CUT
When the wrong selection has been attached to the "Start" and it has moved on to
the new "End": on the undo/cut the red arrow disappears instead of reverting to
its previous position.
When the alternate selection is made there is the frustration to the user of the
error message of "Start not selected". I think this could be avoided within the
software itself.

+

Mixy
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Re: SCARM - Simple Computer Aided Railway Modeller

Postby Mixy » Tue Sep 28, 2010 7:47 pm

noel wrote:Hornby R614/615 do not attach to turnouts in correct orientation
- tend to fix 2-ends to 2-ends.

Confirmed. I will try to correct this behaviour in next release. For now, just disconnect wrong end of crossing and attach correct one.

noel wrote:Selecting EDIT/undo, and with CUT
When the wrong selection has been attached to the "Start" and it has moved on to
the new "End": on the undo/cut the red arrow disappears instead of reverting to
its previous position.
When the alternate selection is made there is the frustration to the user of the
error message of "Start not selected". I think this could be avoided within the
software itself.

This is by design. There must be active free point (red arrow) for next track placement. Start point (Edit > New Start Point) is "floating" and if it is not used, it disappears. The program does not remember which was the last active free point nor the start point in the Undo buffer, so desired point must be selected manually.

Mixy,
from Bulgaria


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