Subject:
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Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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Newsgroups:
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lugnet.cad.dev
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Date:
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Fri, 8 Oct 1999 07:04:51 GMT
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Viewed:
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1135 times
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Gary Williams wrote in message ...
>
> Steve Bliss wrote in message <37f8c86b.239282689@lugnet.com>...
> > On Sun, 3 Oct 1999 15:37:34 GMT, "Gary Williams" <graywolf@pcpros.net>
> > wrote:
> >
> > > No.
> > >
> > > Our software will detect mirror operations and correct for them.
> >
> > I've been thinking the exact opposite -- mirroring should be a valid method
> > for turning subfiles inside-out, and the software doesn't need to do
> > anything special to deal with it (except to notice the inversion, and pass
> > that info on to the subfile). That's the reason the 0 INVERT flag would be
> > needed -- to tell the rendering program that it needs to correct the
> > inversion for the following command.
> >
> > Steve
>
> But more often than not, when mirroring an element or subassembly, it's not
> the intent of the author to turn it inside out. Typical model builders
> shouldn't concern themselves with inversion, which should happen totally
> behind the scenes.
>
> Parts authors will be the primary group of people who care about inversion.
>
> -Gary
I agree with Gary that mirroring should not turn subfiles inside-out.
The rendering program should correct (C)CW-ness by looking at the
transformation.
Part authors should use the INVERT for explicitly turning subfiles
inside-out.
/Lars
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Message is in Reply To:
 | | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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| Steve Bliss wrote in message <37f8c86b.239282689@...et.com>... (...) But more often than not, when mirroring an element or subassembly, it's not the intent of the author to turn it inside out. Typical model builders shouldn't concern themselves (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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