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Looping a sine expression within a 10 sec animation
Hi All,
I am trying to loop a sine expression within a 10sec frame so that when playback the sine wave is seamless.
What i did was thisCreate a layer under Trapcode Particular
under Emitter>Position XY the expression isxPos = 2800;
freq=0.15;
amp=random(50,100);
y = amp*Math.sin(freq*time*Math.PI*2);
yPos = y+360;
[xPos,yPos]See my sample here. https://youtu.be/H5H3KmGJk1w
Need some guidance on how to write the sine expression to loop whilst holding the same wave height/length and frequency ?
Please help!
Thanks!
NinaxPos = 2800;
freq=0.15;
amp=random(50,100);
y = amp*Math.sin(freq*time*Math.PI*2);
yPos = y+360;
[xPos,yPos]
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2 Replies
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Since your frequency is 0.15, after 10 seconds it will have completed 1.5 cycles, which won’t loop correctly. It would work if your frequency were 0.1 or 0.2, but I don’t know if either of those will work for you.
Dan
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Thanks Dan,
I have amended the expression to the following
xPos = 2800;
freq=0.1;
amp=random(50,100)
y = amp*Math.sin(freq*time*Math.PI*2);
yPos = y+360;
[xPos,yPos]However it seems that there’s still a tinee misalignment with the particles.
Please see attached.
https://youtu.be/5ic20GANxRsI checked my other settings and think i have accurately set all other keyframes to loop at the same value start and end.
Can u assist to correct me where i went wrong?
Thanks!
NinaxPos = 2800;
freq=0.1;
amp=random(50,100)
y = amp*Math.sin(freq*time*Math.PI*2);
yPos = y+360;
[xPos,yPos]Some contents or functionalities here are not available due to your cookie preferences!This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
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