Subject:
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Re: Parts editing made easy, anyone?
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sat, 22 Jan 2005 23:56:49 GMT
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Viewed:
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2089 times
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In lugnet.cad.dev, Jindrich Kubec wrote:
> Orion Pobursky wrote:
> > > What's wrong with the larger number of polygons?
> > Unneccessary memory usage and file size.
>
> I should probably find then for what is LDraw library aimed at. If it's
> something like as perfect as possible renders or some quick mockup
> prototyping.
>
> > L3P (and other converters/viewers) detect these primitives and convert them to
> > smooth objects (e.g. L3P detects a 4-4cyli primitive and turns it into a smooth
> > cylinder instead of a faceted cylinder)
>
> Wouldn't it be possible to be the parts as accurate as possible and then
> 'primitivize' them a bit for the draft renders or owners of legacy hardware?
>
> I simply don't think that something like LGEO is a good idea, but IMO it
> was driven by the 'unneccessary' simpleness of the .DAT parts.
>
> So basically the question stands: I somebody submits .DAT file with,
> say, 3000 lines, without any special ldraw features, which provides
> _perfect_ render
No DAT part can provide a perfect render without using some substitutions - flat
polygons just can't do perfect curved surfaces. But that's another issue. I have
recently finished re-authoring Ben's wheels
http://www.brickshelf.com/gallery/RoscoHead/cad/bbb1.png (waiting for his OK
before I post the DATs publically). Have a close look at them. Ben's CAD
generated ones are at the rear. Which look more "perfect"?
> - would it be accepted (on better-than-nothing policy)
> or denied (on purity-or-nothing polity)?
I'm sure it would be accepted. But it's like comparing a BMP image with it's JPG
counterpart. All necessary info to see the image is still there in the JPG so
why include all the unnecessary info of the BMP? My versions of Ben's wheels are
10-15 times smaller than his original.
ROSCO
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Message has 1 Reply:
 | | Re: Parts editing made easy, anyone?
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| (...) Maybe I'm missing the point here, but if this whole discussion is about Ben's excellent independently produced wheels, then whether or not they are modelled appropriately for inclusion in the official LDraw library is academic. The official (...) (20 years ago, 23-Jan-05, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: Parts editing made easy, anyone?
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| (...) I should probably find then for what is LDraw library aimed at. If it's something like as perfect as possible renders or some quick mockup prototyping. (...) Wouldn't it be possible to be the parts as accurate as possible and then (...) (20 years ago, 22-Jan-05, to lugnet.cad.dev)
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