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How do I key with a radius?

Posted: Fri, 13th Feb 2009, 9:37pm

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Moonloon1

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I want to have keyframes that ark in a circle. How can I do this without doing a bunch of keys? I want to have a planet rotate around twin suns, or a spacecraft move in a smooth ark.
Posted: Fri, 13th Feb 2009, 9:44pm

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Axeman

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There isn't a good way to do that, other than using a bunch of keyframes. Making sure the Tween slider is all the way up will help smooth it out, but you'll still need keyframes all the way around for both size and position to make it follow a circular orbit.
Posted: Fri, 13th Feb 2009, 10:45pm

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Moonloon1

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Is that what tween does? I always wondered, I'll have to try that. Thank you
Posted: Fri, 13th Feb 2009, 11:06pm

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Axeman

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I believe the theory behind the Tween slider is that once the keyframes are in place, it smoothes the line connecting them. Basically the same thing as the smooth control on a multi-point mask does.
Posted: Sat, 14th Feb 2009, 6:32am

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Moonloon1

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Axeman wrote:

I believe the theory behind the Tween slider is that once the keyframes are in place, it smoothes the line connecting them. Basically the same thing as the smooth control on a multi-point mask does.
Well I tried that but I didn't see any difference with tween set max or min. It is also hard to place keys in the proper place to make the curve smooth or uniform. There's got to be a way to set an ark between keys. Is there a way to see the keys on screen while working on them? FCP gives you a window that shows all keyframes.