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topic: 1598One bonus timber does not curve with the rest.
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posted: 24 Aug 2011 17:41

from:

Richard Spratt
 
Stockton-upon-Tees - United Kingdom

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When I made my pre 1908 NER turnout I added 8 bonus timbers.  Timber B2 to B8 stay with the track nicely when it is curved.  But B1 does its own thing and hardly moves.  Attached is a screen grab and box file.

68_241243_320000000.png68_241243_320000000.png

Attachment: attach_1156_1598_ner_pre_1908_11_08_24_1740_04.box 274

posted: 24 Aug 2011 22:38

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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Richard Spratt wrote:
When I made my pre 1908 NER turnout I added 8 bonus timbers. Timber B2 to B8 stay with the track nicely when it is curved. But B1 does its own thing and hardly moves.
Hi Richard,

That's an interesting one. :)

The specific reason is that this timber has been crabbed into position instead of being moved along. If you restore it you can then move it along to the required position.

Thanks for finding this bug. I will get it fixed.

regards,

Martin.

posted: 25 Aug 2011 18:32

from:

Richard Spratt
 
Stockton-upon-Tees - United Kingdom

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Thanks Martin,

I'm really impressed with how the timbers stay with the track when it's curved.  I had expected to have to move them around each time the template was used in a different curve, but I probably won;t have to do that.

posted: 2 Sep 2011 10:15

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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I wrote:
Thanks for finding this bug. I will get it fixed.
Hi Richard,

I have come to the conclusion that this isn't a bug, but is actually correct.

That bonus timber was crabbed into position, instead of being moved along the template. The crabbing function moves a timber sideways relative to its centre-line. If I change the code to follow the curve instead of the present method, it would mean that crabbing a timber on a curved template would cause it to move in an arc. That's not what most users would want or expect when shoving timbers close-up.

I will add a note in the help texts that the crabbing function should be used only after any curving has taken place and the track layout finalized. This is normally the case for timber shoving anyway.

But there is a bug there. The "B1" number has followed the curving and is no longer adjacent to the relevant timber. I need to look at that. It may not be an easy fix. :(

Fortunately crab movements are seldom more than a foot or so, so even if not fixed the effect in most cases will be slight.

Thanks again for finding this.

regards,

Martin.



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