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JS Drag, Throw, Boundary

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This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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Wondering how I could accomplish an effect in the JS version.


Basically want to make a horizontal line with a circle (handle). Think of it as the way a volume scrubber looks.


I want the ability to drag / throw it .. when it reaches the end of the line it will bounce and and start moving the opposite direction. 


I would also need a colored line to follow behind it. If that makes sense.

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As far as the dragging and trowing, yes, combining Draggable with ThrowPropsPlugin is perfect for that as illustrated here:http://greensock.com/draggable/


You would have to do some custom coding though to detect when the thrown object has hit the boundary and then create a new tween to give the illusion of a bounce.


Not quite sure all that you need to do with lines following each other, but I'm quite sure its possible. Probably not something GSAP handles out of the box though.

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  • 3 weeks later...

Yes: you can: just add onDrag() listener and read for "this.y" and you'll get the same position like iscroll5 :) 

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