Subject:
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Re: Overlapping primitives - a reason to Hold a part?
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Sat, 15 Jul 2006 15:03:30 GMT
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Viewed:
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3231 times
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In lugnet.cad.dat.parts, William Howard wrote:
> What is the policy on overlapping primitives in a part? Is it OK? Is it
> frowned upon? Is it accepted as the norm? Is it only accepted under
> exceptional circumstances? It excessive over-lapping of primitives (or
> quads/tris) a reason to Hold a part? Is any over-lapping (beyond the
> exceptional) a reason to Hold the part?
>
> For example, the 4 primitives used here
> http://www.brickshelf.com/gallery/whoward69/LDraw/parts/primitives/prim-overlap1.jpg
> correctly define the inner and outer edges of the part. But is the use of the
> 4-4ndis (green) acceptable as only a tiny portion (see here
> http://www.brickshelf.com/gallery/whoward69/LDraw/parts/primitives/prim-overlap2.jpg)
> of it is actually required.
>
> thanks
>
> William
I've been running into problems with this when designing parts and also when
looking at primitive substituted versions of parts featuring parts of circles.
In terms of appearance sometimes it would be much better to overlap some
primitives or quads/tris to ensure that the joins line up seamlessly both in raw
primitive viewers and those which do substitution. It also allows a greater use
of the primitives we have when (for example) a 1/8th disc can be used even
though you only need 1/9th (for example). Provided both are the same colour I
doubt overlap is a problem for any 3d viewer.
Tim
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Message is in Reply To:
 | | Overlapping primitives - a reason to Hold a part?
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| What is the policy on overlapping primitives in a part? Is it OK? Is it frowned upon? Is it accepted as the norm? Is it only accepted under exceptional circumstances? It excessive over-lapping of primitives (or quads/tris) a reason to Hold a part? (...) (18 years ago, 15-Jul-06, to lugnet.cad.dat.parts)
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