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Continued motion expression error
Hi,
I have this expression that takes the value of the last keyframe and continues.
I use it often but I am now getting an error.
I am not great at coding or writing expressions, so any help would be appreciated.Thanks,
nk=numKeys;
value;
if ((nk>1) && (key(nk).time<time)) {
startT=key(nk).time;
deltaT=thisComp.frameDuration;
deltaV=key(nk).value – valueAtTime(startT-deltaT);
key(nk).value + deltaV*(time-startT)/deltaT;}
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6 Replies
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what kind of error do you get? and what does ‘take the value of the last keyframe and continues’ mean? continues to take the value of the last keyframe? thats what usually happens if its tge last keyframe 😛
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Good point.
It works with most properties, but if you were to use it with position, it would keep the object moving in the same trajectory and speed after the last keyframe.This is the error I’m getting.
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The strange thing is that in the viewport it shows the bounding box reacting the way it should, but the object stops at the last keyframe.
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I think you might just need to rearrange it a little to make the JavaScript engine happy:
nk=numKeys;
if ((nk>1) && (key(nk).time<time)) {
startT=key(nk).time;
deltaT=thisComp.frameDuration;
deltaV=key(nk).value - valueAtTime(startT-deltaT);
key(nk).value + deltaV*(time-startT)/deltaT;
}else
value -
Thank you so much!
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Does this do the same thing?
if (numKeys > 0)
loopOut("continue")
else
value
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