Subject:
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Re: Questions: 12 volt train track parts
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 26 Jun 2003 13:52:10 GMT
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Viewed:
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538 times
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In lugnet.cad, Steve Bliss wrote:
> In lugnet.cad, Niels Karsdorp wrote:
>
> > Then what are the 'limits' for details? How far do we have to go?
>
> What is the radius of the curved edges? On such a large part, anything
> below radius 2 or 1 would not really be visible in most cases.
>
> It would be nice if we could specify the part with sharp edge-lines for
> normal viewing, and rounded edges for closeups. But LDraw doesn't give
> us a way to do that.
It seems to me that this is where we draw the line between ray tracing
parts and ldraw parts. Extra details and rounded edges belong on the ray
tracing versions of the parts, but not on the ldraw parts. Ldraw parts
should render quickly because they're meant to be rendered in real time
for building. Sharp edge lines provide important visual cues needed by
builders moving the parts around on screen.
Of course this brings up the point of what to do about the somewhat
incompatible ray tracing libraries we're currently stuck with. I
propose we make new LGEO style parts since l3p already works with
them and since nobody else seems to be adding to that part library.
However, I wonder if we should model new ray parts in LDRAW coords
and put an LGEO coordinate conversion wrapper around them, or is it
better to model in the more conventional LGEO coordinate system?
Don
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Message has 2 Replies:
 | | Re: Questions: 12 volt train track parts
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| (...) This seems ok to me in theory: quick ldraw parts and more detailed ray trace parts. The practice however brings up the question how are we going to build up and maintain a quality ray traceable parts library. LGEO or Anton's or .... (and how (...) (21 years ago, 26-Jun-03, to lugnet.cad)
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Message is in Reply To:
| | Re: Questions: 12 volt train track parts
|
| (...) What is the radius of the curved edges? On such a large part, anything below radius 2 or 1 would not really be visible in most cases. It would be nice if we could specify the part with sharp edge-lines for normal viewing, and rounded edges for (...) (21 years ago, 26-Jun-03, to lugnet.cad)
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