Matching Speed Of Object On Motion Path To Extrusions Along Path

[steeveecee]

Hello,

I'm getting quite frustrated trying to think of a way to reproduce an effect similar to an old Dyson advert (http://www.beam.tv/beamreels/reel_player.php?reel=PsKqvCQtZf&reel_file=YvWfnwFVdt&fs=1&resize=1).

I've created a motion path, and animated a ball following it. To make the trails, I have made several nurbs circles and used Surfaces->Extrude to create tubes along the same motion path. I can then animate these by adjusting the subCurve value so it extrudes from 0 to 1 following the ball.

My problem is the timing does not match; the ball is often ahead or behind the 'trails'. Does anyone know how I can get an accurate result without having to go keyframe crazy, or dabbling with particles?

[joojaa]

Well there are many ways.

You could use a animated sweep with setp of 1 then your range would be nice and easily the same as for the curve anim in parametric mode or if you dont key the position then ist the same as the frame number range of the curve anim. BUt theres other ways too.