[Dan Ebberts]

Why not just make it 3D, start with it way off in the distance in the z direction, and then animate it moving towards the camera. That will automatically give you the proper exponential scaling effect?

If you do it with a 2D scale expression, you’ll probably want to use an exponential equation to get a realistic look. It can be done, but it takes some tweaking to get it right.

Dan

[Dan Ebberts]

A link to a clip with the effect you’re talking about would be helpful.

Dan

[Dan Ebberts]

What kind of animation are you talking about? Do you want the characters to move to their correct locations, or just appear there?

Dan

[Dan Ebberts]

What kind of animation are you talking about? Do you want the characters to move to their correct locations, or just appear there?

Dan

[Dan Ebberts]

Did you try Effect > Render > Audio Waveform ?

Dan

[Dan Ebberts]

It seems like you should be able to do it with displacement manpping. I’d try Turbulent Displace and start with Amount = 35 and Size = 3, keyframing Evolution at about 3 or 4 revolutions per second.

Dan

[Dan Ebberts]

Wow. I don’t really have a clue as to how expressions would help you with this. I guess you’d have to do something like track the start and end point of each line so that you could have the beam effect extrapolate the line to the vanishing point. The vanishing point would have to be calculated based on the intersection point of at least two extended lines. I don’t know what you would do about the circles and the texture of the pipe. I think it would take you way longer to develop expressions for this than to brute force something by hand.

Maybe somebody else will have some ideas.

Sorry.

Dan

[Dan Ebberts]

Wow. I don’t really have a clue as to how expressions would help you with this. I guess you’d have to do something like track the start and end point of each line so that you could have the beam effect extrapolate the line to the vanishing point. The vanishing point would have to be calculated based on the intersection point of at least two extended lines. I don’t know what you would do about the circles and the texture of the pipe. I think it would take you way longer to develop expressions for this than to brute force something by hand.

Maybe somebody else will have some ideas.

Sorry.

Dan

[Dan Ebberts]

It doesn’t work because rotation is a 1-dimensional property and you’re trying to stuff an array in there (which will work for positon and scale). Change your last two lines to something like this and it should work:

valeurRotation.setValueAtTime(0,100);
valeurRotation.setValueAtTime(2,200);

Dan

[Dan Ebberts]

In step one, make sure you have selected “Mask Shape”.

Dan