Subject:
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Re: Primitives and quads/triangles
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Newsgroups:
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lugnet.cad
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Date:
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Tue, 15 Oct 2002 19:11:56 GMT
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Viewed:
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422 times
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In lugnet.cad, Niels Karsdorp writes:
> When I was working on the old Type I trainbase 6 x 12,
> I also wanted correct wheels for this part. Since I have
> these, I tried to create the wheel. In my first attempt
> I used primitives only, but the cones looked horrible
> when rendered. In my seccond attempt I created a small
> segment (of 5.625 degrees) and created a whole wheel
> of 64 segments. This part contains over 700 quads and
> over 700 lines. In a third attempt I used primitives
> for discs, rings and cylinders, and quad-segments for
> the cones (64 segments in a circle).
While your goal is to create something that looks good after L3P has
converted it to POV format, bear in mind that it should ideally also look
good in the original LDraw format. Using primitives for the cylinders, and
not for the cones will cause problems when rendered with a standard LDraw
renderer.
I would agree with Tore's suggestion to use the 0 IFPOV method. Use
primitives for both the cylinders and cones to look as good as possible with
standard renderers, and 0 IFPOV to look great in POV. This would of course
require more work on your part.
I do have one question, though. I notice that the new-style train wheel
appears to use one cone for each conical section, while you obviously used
multiple. Is that because they are different sized cones? Also, are yours
not quite the right size? There are gaps visible, and if the cones met up
exactly I don't think the gaps would be visible.
--Travis Cobbs
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Message has 1 Reply:
 | | Re: Primitives and quads/triangles
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| (...) The new-style train wheel (4180d.dat) does not use cones, but quads. This causes gaps when rendered (see on my site). Since there was not a single matching cone primitive, I used three. I know about the gaps between these cones. Because of the (...) (22 years ago, 16-Oct-02, to lugnet.cad)
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Message is in Reply To:
| | Primitives and quads/triangles
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| When I was working on the old Type I trainbase 6 x 12, I also wanted correct wheels for this part. Since I have these, I tried to create the wheel. In my first attempt I used primitives only, but the cones looked horrible when rendered. In my (...) (22 years ago, 15-Oct-02, to lugnet.cad)
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