Time param in wiggle expression

Forum|Forum|4 years ago
November 11, 2021
2 replies
812 views

I'm curious about what exactly the time param does in a wiggle expression.

wiggle(freq, amp, octaves = 1, amp_mult = .5, t = time)

There is some sort of a noise function internally. If we supply layer time as the last param, is time simply added to the noise seed to obtain a value with required freq, octave and amplitude?

wiggle(freq, amp, octaves, amp_mult , t)

So, if we apply wiggle to x, internally does it become noise(x+t, Freq, amp, octaves, amp_mult) instead of

wiggle(freq, amp, octaves , amp_mult ) -

noise(x, freq, amp, octaves, amp_mult) without any time param?

Expressions

This topic has been closed for replies.

Mylenium

Legend

I'm not clear what you are asking. The time parameter bears no influence on a parameters value. It just defines the phase offset and phase lengths of the underlying sinus/ cosinus functions of the noise, hence it's only ever relevant if you need to control this part of the equation to create looping animations or integrate keyframed parameter values.

Mylenium

A

AnmolMAuthor

Inspiring

I was curious about the time param. Now, I understand. Cheers.

Mylenium

Legend

This parameter is typically only needed for looping expressions and simply defines an absolute value to be used for the internal seeding. Nothing fancy or mystical about it and most people never use it.

Mylenium

A

AnmolMAuthor

Inspiring

So without t, it is noise(x, Freq, amp, octaves, amp_mult) and with t it is noise(t, Freq, amp, octaves, amp_mult).

Would that be correct? So t replaces the seed?

Dan Ebberts

Community Expert

The time parameter just lets you retrieve the wiggle value at a particular time. wiggle() generates a continous wave, and by default you get the value correponding to the current time. The time parameter lets you override the default and get the value for a specific time.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded