Special:
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[DAT] (requires LDraw-compatible viewer)
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Subject:
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Re: LDRAW-MODE for EMACS question.
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Sun, 4 Aug 2002 14:14:17 GMT
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Viewed:
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925 times
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"Dave Astolfo" <dastolfo1@cogeco.ca> writes:
> I am new to LDRAW-MODE for EMACS and am having some difficulty working with
> the tutorial. I am trying to work with the bezier curve tutorial:
> http://www.math.uio.no/~fredrigl/technic/ldraw-mode/bezier-curve/
>
> I have performed the following while working with the file:
> C-c C-b
> I get the prompt for the length (96)
> I get the prompt for the segments (25).
> When I get to the prompt for the segment, I enter hose-seg.dat and get the
> following error:
>
> wrong type argument number-or-marker-p, nil
I answered this in a mail to you, but I would like to quickly summary
what I think may be wrong. When issuing the command with C-c C-b, it
is important that the cursor is on the first of the end-points, that
is, the first of these four lines:
1 1 10 0 -20 -1 0 0 0 1 0 0 0 -1 4459.DAT
1 14 50 0 -20 -1 0 0 0 1 0 0 0 -1 4459.DAT
1 14 60 -20 10 0 0 -1 0 1 0 1 0 0 4459.DAT
1 1 60 -20 50 0 0 -1 0 1 0 1 0 0 4459.DAT
If you put the cursor on any other line, it will generate the error
message you saw, which is not very helpful, I'm afraid.
I think this was a bit imprecisely described in the tutorial, so I
changed the wording a bit. I'm sorry if this was the cause of your
problem.
Failing that, there is a second way to insert this kind of hose, and
it is described here:
http://folk.uio.no/fredrigl/technic/ldraw-mode/index.html#bezier
You will see that the third example illustrates a way to insert a
flexible hose. You can put this in the Emacs buffer:
0
1 1 -50 0 0 0 -17.31 -0.5 1 0 0 0 -10 0.86 76.dat
1 1 0 0 60 1 0 0 0 0 -1 0 20 0 76.dat
0
Put the cursor on the first of the lines with 76.DAT, press C-c C-b
and type 82 and hit return. This should insert a hose of length 82
between the two end points above.
I will of course be happy to try to resolve any other problems you may
experience with LDraw-mode.
Fredrik
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Message has 1 Reply:
Message is in Reply To:
 | | LDRAW-MODE for EMACS question.
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| Hello all, I am new to LDRAW-MODE for EMACS and am having some difficulty working with the tutorial. I am trying to work with the bezier curve tutorial: (URL) have performed the following while working with the file: C-c C-b I get the prompt for the (...) (22 years ago, 4-Aug-02, to lugnet.cad.dat.parts)
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