algorithmic modeling for Rhino
Anyone know how to grasshopperize rotational motion like this?
Trying to rotate a cam with lever to get exaggerated motion. Not sure how to relate the rotation of the cam with the cam's point of contact on the lever. This should be an animated gif when you click on the image...if you don't see animation here, I attached a animated gif file. Also, rhino and gh files. Thanks in advance for any help.
Views: 4128
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rotation proof of concept.gif, 1.2 MB -
rotationtest.3dm, 85 KB -
rotation test.gh, 11 KB
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Replies to This Discussion
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Permalink Reply by David Rutten on
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Failed attempt number one. Trying to construct a tangency curve, but now I don't know how to go on...
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David Rutten
david@mcneel.com
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motion_failed1.gh, 8 KB
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Failed attempt number 2... sigh. Trying to construct a tangent/tangent line between the bar rotation circle and the gear. But there's no consistent answer...
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David Rutten
david@mcneel.com
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motion_failed2.gh, 10 KB
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I can't work it out. Sorry.
Kangaroo might still be able to do it, but I'm not proficient enough to tell you how.
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David Rutten
david@mcneel.com
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Permalink Reply by Danny Boyes on
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Is there any chance the Bongo Team could have a look at doing something for Grasshopper.
I've always maintained that there would be a use for scripting keyframes from grasshopper but particularly I think the IK methods of Bongo would have a huge following here. Anytime I've mentioned it I get shot down by Andy... would you have any influence?
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Permalink Reply by Dan Greenberg on
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Thanks for trying David! Your definition is still helpful to me to see the use of some components.
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That's the method I was looking at ...no joy
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Permalink Reply by Fred Becquelin on
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... reminds me of this spirograph video
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Permalink Reply by Yoann Mescam (Systemiq) on
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Ugly but it works (click image for animation)
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Ugly.gh, 13 KB
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very nice ... I wouldn't call it ugly
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This is fun!
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How does the definition change / adapt if the pivot point on the lever changes? Thus moving closer to or further from the cam?
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You can move the internalized pivot and see the result.
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Uglier.gh, 10 KB
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