-
Wiggle Exposure
Hey guys,
Have a quick question. I have the basic wiggle expression on a layer with the exposure being wiggled back and forth. Is there anything I can type into the expression to not have it go negative. For instance, I only want it to go between 0 and 10.
Right now, I’m just using wiggle(x,x)
I’m pretty new to expressions so any help is very much appreciated!
Thanks
Ryan -
5 Replies
-
there is a java math function for absolute value, it’s Math.abs().
just place you wiggle expression inside the math function, so it would look something like this:
Math.abs(wiggle(x,x))
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
Math.abs() works, but when the change is going fast from positive to negative, you’ll get a sudden bounce where it would normally cross 0.
a simpler way would be to wiggle with amp 5 -> resulting in +/- 5, but adding 5 to that wiggle, resulting in 0-10
like:
wiggle(1,5)+5;
-
Thanks!
-
Why using random(0,10) wont work in this situation?
-
random may have been too random for the desired effect… wiggle can be a more natural random movement depending on the settings.
but you’re right, limiting random to positive values would have worked if that type of randomness was what they were looking for.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW
Reply to this Discussion! Login or Sign Up