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 CAD / Development / 1848
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Subject: 
Re: Where should I center this one?
Newsgroups: 
lugnet.cad.dev
Date: 
Tue, 25 May 1999 01:05:06 GMT
Viewed: 
1592 times
  
On Mon, 24 May 1999 13:55:54 GMT, blisses@worldnet.att.net (Steve Bliss) wrote:

> On Fri, 21 May 1999 20:46:54 GMT, "John VanZwieten"
> <john_vanzwieten@email.msn.com> wrote:
> 
> > I'm trying to decide where to set the origin for the SW hinge pieces.  Normaly
> > I would center a hinge piece on its rotation axis, to make it easy to rotate
> > the hinge.  However, the rotation axis for these hinges is 9 LDU below the top
> > of the brick, meaning that a user would have to go to fine movement in LEdit to
> > place the brick on a normal model.  I think we'd find many of these bricks
> > placed 1 LDU into the brick or plate below it.
> > 
> > But if i use the top of the brick for y=0, then rotating on the hinges becomes
> > even a bigger pain.
> > 
> > What do others think?
> 
> The center should be on the rotation point.
> 
> Like you said, rotating the pieces when the rotation point is not centered
> on the hinge is a bigger pain than getting the pieces into the right
> position.

Agreed.  Rotation is the bigger pain.

> (It would be great if some future version of LDraw would have a center of
> rotation separate from the the physical centerpoint).

In LEdit, I occasionally add an imaginary new piece, "rotate.dat", after the
piece I want to rotate.  Move it to the point where I want it, then set the
rotation on that point.   Move back up a line to the real piece and rotate.
Then delete the imaginary piece.

> > Also, what the heck should we call these things?  Obviously they should be in
> > the hinge category, but what then?  I've heard them called "toothed",
> > "serated," "click-brick," and probably several others.  And how should we
> > distinguish the male from the female in this case?  Since this type of hinge
> > occurs on the windscreen, the name should be "attachable" to other parts.
> 
> I'd rather name them after the function than the shape.  So "stepper",
> "discrete" or "lock-step".
> 
> 2 Finger and 1 Finger?

We have used "male" and "female" before.  We have also used 1 and  2 finger.
The 'finger' method seems to be used for items that can have more than 2
fingers, but would still seem to be more applicable (based on similar parts),
than 'male/female'.

-- Terry K --



Message is in Reply To:
  Re: Where should I center this one?
 
(...) The center should be on the rotation point. Like you said, rotating the pieces when the rotation point is not centered on the hinge is a bigger pain than getting the pieces into the right position. (It would be great if some future version of (...) (27 years ago, 24-May-99, to lugnet.cad.dev)

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