Skip navigation

After Effects Expressions

UArt2 Calculating status...

Currently Being Moderated

if else i dont get it

Jan 25, 2012 8:51 PM

Hi and hello.

Here is my tricky problem.

I have 5 boxes red_1, green_2, blue_3, black_4 and yellow_5.

All boxes lined up, when i move blue_3 20 pixels to the y position, green_2 and black_4 should move 10 pixels to the y position.

When i move blue_3 back to 0 all others should move back.

So every time i move one of these Boxes the neighbors should move too.

Sounds easy but seems to be really hard.

Thanks for any tip.

615 Views 3 Replies Latest reply: UArt2, Jan 26, 2012 1:21 PM

Replies

Currently Being Moderated

1. Dan Ebberts,

Jan 26, 2012 4:22 AM in reply to UArt2

Report

It's not simple. Say you have an expression that calculates a box's y offset based on where its neighbors are positioned. How do you move that box somewhere other than where the expression puts it?

I think you would need to control things with an external control of some sort. If only one box at a time can move, you could select that box with a slider and the expression on that box would say "I'm selected, I need to move 20 px". The neighbor's expressions would say, "My neighbor is selected, I need to move 10 px". Something like that. It depends a lot on how you are planning on animating things.

Dan

|
Mark as:
Currently Being Moderated

2. Navarro Parker,

Jan 26, 2012 12:06 PM in reply to Dan Ebberts

Report

Would this be a case for the never-used Checkbox Control effect?

How do you write an if else with the checkbox control? (If it's turned on do this, if it's turned off do that)

|
Mark as:
Currently Being Moderated

3. UArt2,

Jan 26, 2012 1:21 PM in reply to Navarro Parker

Report

Hmm were is the different between the Checkbox and the Slider?

|
Mark as:

Forum guidelines

Answers + Points = Status

10 points awarded for Correct Answers
5 points awarded for Helpful Answers
10,000+ points
1,001-10,000 points
501-1,000 points
5-500 points