Subject:
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Re: LD4DStudio sample suggestions
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Newsgroups:
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lugnet.cad
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Date:
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Wed, 24 Jun 2009 21:24:15 GMT
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Viewed:
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9687 times
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In lugnet.cad, Roland Melkert wrote:
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lol, i went for the first one (small 1.3MB gif fragment):
http://www.ld4dstudio.nl/img/ld4d/engine.gif
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Very nice work! There are a fair number of complex constraints going on here.
The linear portion of the crank is easy enough (rotation around fixed axis).
But the connecting rods have to have one end stay connected to the crank and the
other end stay coincident with the axis of a cylinder. This means they need
both an oscillating translation and rotation. Finally, the pistons need to have
pure translation but still stay attached to the moving ends of the rods
(guided). I like it.
I’ve only just started playing with LD4DStudio so I am hardly qualified to
comment. But I make a lot of Technic LDRAW models, make a lot of technical
renders, and I make a lot of photographic stop motion animations for
Technicopedia. I can imagine this tool
being incredibly useful once I figure out how to use it.
Eric
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Message has 1 Reply:
 | | Re: LD4DStudio sample suggestions
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| (...) Thanks, actually I did cheat a bit. I made sure the cylinder heads are perpendicular to the crankShaft. With that in place the motion comes down to fairly basic geometry. First step is to calculate the pistonRound angle by reducing the whole (...) (15 years ago, 24-Jun-09, to lugnet.cad)
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Message is in Reply To:
| | Re: LD4DStudio sample suggestions
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| (...) lol, i went for the first one (small 1.3MB gif fragment): (URL) full version will be a sample with the beta 2 version. That big V8 engine is awesome though, maybe I'll try to animate it some time, have to figure out a more dynamic script for (...) (15 years ago, 24-Jun-09, to lugnet.cad, FTX)
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