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In lugnet.cad, Larry Pieniazek writes:
> In lugnet.cad, Fredrik Glöckner writes:
> > "Larry Pieniazek" <lpieniazek@mercator.com> writes:
> >
> > > Cool. Where can I read about scaling? It sounds like I just need to
> > > take one of the ends and scale it to the length I need (in this
> > > case a span of 26 studs worth of bricks from one end of the brick
> > > to the other).
> >
> > If the ends are covered, you don't need to worry too much about the
> > end points. So you can take on of the end points and scale it to your
> > needs, as you say. You can start with this line:
> >
> > 1 16 -40 1 0 0 -20 0 1 0 0 0 0 1 76.DAT
> >
> > and change the "-20" to 20 times 26. That should give you a hose with
> > a total length of 26 studs.
OK, I have done a similar thing in my PCC which uses yellow tubing for
handrails. the tubing needs to be 14 plates high so I changed the length -20
to -14*8 by hand in the mpd to get the length right, then moved/rotated the
tubing around in MLCad (rotating it as necessary because as I reported before
you cannot move it in MLCad in the direction of the long axis, you have to
rotate it, move it then rotate it back) and replicated it. This worked fine in
MLCad. You can see the tubing is the right length if you go to my
www.miltontrainworks.com site and look at the item by clicking on the
thumbnail on the splash page, there is a side view taken from a screen shot of
MLCad... (third image down in:
http://www.miltontrainworks.com/item_info.html#MTW-3001-rw)
However when I exported the model through L3Lab, the tubing got shortened, I
think. In the render that heads the item list (first image) you can clearly
see that the tubing is significantly shorter. *I* didn't shorten it.
Is this a known bug of L3Lab? of POVRay? Some flaw with how I did things?
Versions:
MLCad: 1.9R3
L3Lab: 1.0 20000211
POVRay: 3.1e.watcom.win32 (pentium II optimised)
As you can see I don't always upgrade everything to the latest. It tends to
break stuff a lot of the time.
This is what I was talking about regarding moving it...
> I think I found an MLCad quirk though. With non unit scaling/rotation factors
> I found that I could not move the part in the axis direction that was non
> unit. That is, once I made it 520 units (20*26) long, I could move it in
> perpendicular directions but not in the direction of 520 length.
>
> That was not a showstopper, I did an "A" to rotate it, moved it so that it was
> at one end point of where I wanted it in the "real" 520 length direction, then
> rotated it back and voila. It rotated around that endpoint so it was where I
> wanted it to be and I then just moved it around in the other two directions to
> get final placement.
I'm not a parts author, I don't really understand the theory of making things
the right size. How hard would it be to make up a spreadsheet or something to
let me generate arbitrary lengths of tubing (straight only) that don't have
the "can't move in the long axis direction" problem (*which I hate!*)? Is that
something that I could puzzle out in short order? Are there spreadsheets for
generating things that would help me figure things out? Is this a daft
question?
++Lar
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Message is in Reply To:
 | | Re: tubing
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| (...) Cool. That worked. I had to edit the MPD by hand, though, I could not just edit the matrix values in MLCad directly. I think I found an MLCad quirk though. With non unit scaling/rotation factors I found that I could not move the part in the (...) (24 years ago, 8-Aug-00, to lugnet.cad, lugnet.cad.mlcad)
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