I'm creating a logo animation and need some help with some techniques. I'm trying to balance a square on a circle (attached). So the square is on top of the circle/ball and wants to turn over, but the ball prevents that by moving to the left/right. I don't have any example to show, that's also why I'm writing this. If you know what I'm trying to say, please help me out with maybe a tutorial or some tips.
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Here's what I would do.
Make sure the anchor point of the ball layer is in the center of the ball
Add a null to the timeilne and match the ball position so the anchor point of the ball and the Null is at the center of the ball
Parent the Null to the ball
Prent the square to the Null
Now when you move the ball the null moves and the square moves. When you rotate the ball the null rotates and the square rotates from the center of the ball to it sticks to the radius of the ball
Now it's time to set up your animation. If you want to get fancy you can get the ball to rotate based on the size of the ball so all you have to do is animate the position by using a simple expression.
I hope that helps get you started. If you need more help post a screenshot showing your whole comp with the modified properties of all layers revealed. Select the layers, press uu, then use the toolbar to embed the images.