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Moving null object using time*value of slider control
I simply want to have a null object animate from right to left based upon the slider value, then when the slider value drops to zero I want that null object to stop.
Here’s my current expression that is close to what I need. Or maybe it’s really way off…I’m not great with expressions yet:moveX=time*effect("time stop")("Slider");
[moveX,transform.position[1]]
So the expression is causing the null object to animate correctly in the x position over time unless I drop it to zero. I want to be able to keyframe the slider from say 50 to 0, which would stop the null object. With the expression above, the null object returns to its start position instead of just slowing down to a stop.
I’ve played around with using valueAtTime, but I guess I’m too green to make it work. It seems that the expression is returning the null object to its initial value. I hope I’ve explained this well enough, and I appreciate any advice you guys can throw my way. Thanks for reading!
Eric Bowman
AssemblyCreative.com -
2 Replies
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Hi,
doing what you want is not as straigthforward as it may seem.
Have a look there, it is explained step by step: https://www.motionscript.com/articles/speed-control.html#linearXavier
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Thanks so much for this.
I searched on Dan’s site for a while and never found this specific article. Sorry to be a bother, and again thanks so much for the link!
Eric Bowman
AssemblyCreative.com
EricSBowman.com
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