Subject:
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Re: LSynth electric cable cross section oriention problem
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sun, 26 Nov 2006 20:35:21 GMT
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Viewed:
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2814 times
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In lugnet.cad.dev, Kevin L. Clague wrote:
>
> In case you didn't get this far, I solved the above problem and can now
> control twist all through a cable segment from start point to end point.
>
> I calculate the up vector for the start of segment, and the up vector for the
> end of segment. I also calculate the entire length of the segment.
>
> At each new cross section, I calculate how far we are down the total length,
> and calculate the current up vector based on the start_up, end_up, and
> current_length/total length.
Hi Kevin,
Another possibility to investigate is to change the up vector in inverse
proportion to the bezier curve change. That would mean it would twist less where
there's a sharper bend, and would possibly end up looking more authentic.
But I'd hate to be the one working out the algorithm...
ROSCO
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Message has 1 Reply:
Message is in Reply To:
 | | Re: LSynth electric cable cross section oriention problem
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| (...) Leo, In case you didn't get this far, I solved the above problem and can now control twist all through a cable segment from start point to end point. I calculate the up vector for the start of segment, and the up vector for the end of segment. (...) (18 years ago, 26-Nov-06, to lugnet.cad.dev)
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