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Orbit Animation Problem

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frank nadalOrbit Animation Problem
by on Feb 1, 2011 at 12:28:44 am


Newbie question here. I've created a box and I wish to animate a camera orbiting around the box. I simply create the box, create a target camera, set my auto-key, then use the "orbit camera" tool to orbit around the object setting keyframes as I go.

The camera does orbit, but it zooms in and out while it's orbiting. I'm trying to get a smooth orbit, but the one I have now is making me sea sick. I know it's probably a simple setting...can someone please enlighten me?

Thanks so much in advance.

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Tiago RibeiroRe: Orbit Animation Problem
by on Feb 3, 2011 at 10:35:06 pm

try drawing a spline circle that represents the orbit.
next, set a path constraint on the camera, and constraint it over the spline
that way, the camera will smoothly follow the spline
if you aren't sure about it, search the documentation for "path constraint"

good luck

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Graham MacfarlaneRe: Orbit Animation Problem
by on Feb 5, 2011 at 10:30:54 am

What Tiago suggests is certainly the best method however something slightly faster to setup would be to create a point helper placed at the centre of rotation you intend for the camera. Link the camera (only the camera and not its target) to the point helper with the "select and link tool" then turn on auto key go to a frame other than zero and rotate the point helper 360 (turning on angle snap or typing into the rotation dialogue helps)

If your after a loopable turntable style animation you might want to get rid of the automatic ease in and out of the rotating motion leaving a constant speed rotation.
For this you need to go to graph editors>track view - curve editor
Select the item with animation in the list on the left, highlight it's keyframes (which should have bezier handles on them) and select "set tangents to linear" (from the tool bar above)

Graham Macfarlane
3D animator and VFX specialist
London UK

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