Scrolltrigger function-based value for scrub

[MohsenKBZ]

hey there.

is it possible to add function-based values for scrolltrigger scrub?

[GreenSock]

Hm, could you explain how that would be useful? I can't think of a scenario where that would help anything. 

[MohsenKBZ]

we're developing a project where user can create a parallax effect in a live editor and be able to change all parameters. from parallax values e.g. x, y, rotation etc. to start and end points. and we wanted to add scrub as well.

or if you could suggest any other ways to do to get the same result as using scrub

[GreenSock]

Yeah, I just don't see any value (outside of maybe a live editor) in a function-based scrub value and it would bloat ScrollTrigger to try to implement that. If I were you, I'd probably just have a setup() function that basically kills the old ones and recreates things from scratch according to the values selected. 

 

The reason we permit some function-based values is for responsive layouts where it's critical to be able to dynamically update sizing values or re-calculate tween values but scrub isn't something that'd need to dynamically change in any real-world application that I can think of. It would hurt performance to implement that too, and I obsess about performance

[MohsenKBZ]

yeah that's also possible with destroying previous instances and recreating.

thanks for explaining and suggestions