Subject:
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Re: parts authoring question
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Newsgroups:
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lugnet.cad.dev
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Date:
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Fri, 18 Aug 2000 17:39:18 GMT
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Viewed:
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1072 times
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In lugnet.cad.dev, ludo soete wrote:
> Hi,
>
> When writing a new part, where should the 0,0,0 point be?
> Is there some rule who say's that this should be somewhere, or could this be
> any point.
There are two or three general rules about this.
1. The origin should be at the top-center (ignoring studs) of the part.
This rule works best with mostly-rectangular pieces.
2. Studs and other connection-points should be positioned at multiples of
X=10, Z=10, Y=10. The Y-orientation is usually subject to rule 1.
3. The origin should be placed so the piece is consistent with other,
similar, already-modeled pieces.
> The part i'm writing (9V Straight track [2865])has a Y range from -16 to 8
> in other words, the 0,0,0 point is in the center of the middle 2x8 plate (the
> one with the hole in it).
That sounds reasonably good.
> **-IF-** the 0,0,0 point has to be on TOP/CENTER of the part, how can i change
> this without rewriting my 9 pages code?
Two basic approaches:
1. Grab LDAO. In the file editor, you can highlight all of your code, and
use the Edit | Move Exact function to relocate everything at once.
2. Import your code to Excel, and manipulate the Y-columns there. Then do
as Save As and select Text output. This will result in all the commands
being tab-delimited. Which is valid, but not done very often.
> Is it allowed to copy code from another part to use in a new part?
Yes. Plagarism occurs frequently. The polite thing to do is to:
a. Notify the original author.
b. Keep the original Author: line, and add another author name for
yourself.
> It's because i dont want to re-invent the wheel (or the hot water) ;)
;)
> P.S. if someone's interested in a preview [for a check on it - it's my verry
> first try to write part(s)], i'll can send you the preliminary unofficial
> 2865.DAT file. It needs some work (95% reddy?)
If you post it to lugnet.cad.dat.parts, I'm sure *someone* will give you
some feedback.
Steve
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Message is in Reply To:
 | | parts authoring question
|
| Hi, When writing a new part, where should the 0,0,0 point be? Is there some rule who say's that this should be somewhere, or could this be any point. The part i'm writing (9V Straight track [2865])has a Y range from -16 to 8 in other words, the (...) (24 years ago, 18-Aug-00, to lugnet.cad.dev)
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