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Animate position the length of composition
hello there,
very new to expressions and I’ve been trying to figure this one out for a while now.
ok, so I have a 1200×32 comp and I want to animate an image from one side of the screen to the other.
Obviously I can easily do this with position keyframes, but its a templated comp and i want to be able to change the comp size and not have to adjust the keyframes to extend the entire length of the comp every time, so I’m thinking if i can write an expression that is based off the length of the comp i won’t need to rekeyframe every time.
1. is this possible
2. can you point me in the right direction/help me out if it is.I’d really like to understand how this works if you’re able to help me, thanks a lot.
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3 Replies
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It’s hard to say if this is exactly what you want, but it might get you started. It will move a layer from the left side of the comp to the right side over the duration of the comp:
p1 = [width/2,value[1]];
p2 = [thisComp.width-width/2,value[1]];
ease(time,0,thisComp.duration,p1,p2)Dan
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Dan,
Very awesome, that helps so much, I wasn’t even close.
I basically need this image I have to start off screen on the right and move across off screen to the left.
I tried, messing with the script you provided and i got the timing like I need it but I still can’t seem to have it move off screen, it seems to only be moving a couple of pixels over, any idea on that?
Thanks a ton, been trying to figure this out all day
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Actually nevermind, you set me down the exact path I needed to be your help is immensely appreciated.
I went ahead and included the expression for anyone that is interested.
You are awesome though Dan!
p1 = [thisComp.width+100,value[1]];
p2 = [thisComp.width-thisComp.width-100,value[1]];
linear(time,0,1.40,p1,p2)
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