Subject:
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Re: on Collision, stop Movement
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Newsgroups:
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lugnet.cad
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Date:
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Wed, 18 Aug 2004 13:35:35 GMT
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Viewed:
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1054 times
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In lugnet.cad, Andrew Allan wrote:
> In lugnet.cad, David Laswell wrote:
> > In lugnet.cad, Travis Cobbs wrote:
> > >
> > > What I was saying is that there's no easy way to do it purely
> > > based on the geometry.
> >
> > Exterior geometry may be a bit fuzzy when you start rotating it to
> > different angles, but center geometry is just a matter of straight
> > lines or mathematical points. They either match or they don't.
> > There is no "sorta match". Any accurate system you could come up
> > with for matching the exterior geometry together would probably
> > just be a more complicated version of using center geometry.
>
> To add my 2 cents worth, I've tried a few experements within MBC for
> making parts clickable where I defined "male" and "female"
> connection points within the brick (i.e. STUD = male). Ignoring the
> sheer number of ways even a brick as simple as the ubiquious 2x4 can
> be connected the real barrier I ran into was with geometry.
>
> If the bricks are aligned then making them click is reasonably easy,
> but if the one of the bricks needs to be rotated (through upto 3
> axis) to make them align and click the problem then seems to become
> very non-trivial.
>
> If anybody has any ideas to solve geometrical alignment, I'd love to
> know so I can continue my experiments.
We discussed this years ago. Maybe there's some ideas there.
http://news.lugnet.com/cad/?n=5419
I've solved many such alignment problems in 2D, but never in 3D. It's
harder to visualize because of my poor drawing skills. I wonder if you
can break it down into two 2D alignment problems...
Don
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Message is in Reply To:
 | | Re: on Collision, stop Movement
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| (...) To add my 2 cents worth, I've tried a few experements within MBC for making parts clickable where I defined "male" and "female" connection points within the brick (i.e. STUD = male). Ignoring the sheer number of ways even a brick as simple as (...) (20 years ago, 18-Aug-04, to lugnet.cad)
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