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Cinema 4D F.A.Q (Updated: 2007 Jul 13 6:44 pm)
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Subject: Xpresso QuestionEinzelganger opened this issue on Feb 03, 2013 · 10 posts
There is a two-part tutorial on 'automatic rotation' (over time) in the Cinema 4D Help. Just type in 'Xpresso' in the Search and follow the "Xpresso Tutorials" link in the search results. Hint: there is a Time node in Xpresso. :)
I wrote an Xpresso set which does just that. It uses the "current" rotation, the target rotation, but only allows it to rotate a certain number of degrees per frame, based on a chosen time. So if it's said that the object can rotate 360 degrees in 5 seconds, the nodes will allow the object to rotate 2.4 degrees per frame until it hits the target.
There might be more efficient ways to do it, but that's what I did. I can post it if you want.
Very nice solution by raymondsalter, congrats. If you are not familiar with Python you could also use a monoflop for rotation triggered by collision and a compare node to reset the whole bunch.