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Camera POI following layer
Help, im new to expressions and have been doing ok looking through posts/tutorials etc for a little job that has 180 comps in a circle repeated 21 times high thats 3780 comps in moving aboutbut now i am stumped.
I need my camera to follow a Null object whose position is constant but anchor point and rotation vary.I know its easy but my brain has started to melt down from expression overload these last few days and for some reason (probably lack of beer and sunlight) i cant do it arggghh
any help would be apreciated
any other code or advice for some groovy, follow with delay, motion/focus/zoom would be a real bonus
thanks in advance
this is my first post and just want to say how great this forum is, i have learnt much and been trully amazed at the results so thank you to all contributors.
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6 Replies
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I’m not clear on what you’re trying to do, but if you want your POI to match a specific point on your Null, you could do it like this to, for example, line up on the null’s center:
L = thisComp.layer(“Null 1”);
L.toWorld([L.width,L.height,0]/2)or like this for the upper left corner:
L = thisComp.layer(“Null 1”);
L.toWorld([0,0,0])Dan
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Dan you have made my day thank you
Both do the job perfectly, its getting late and its great when it works, i can get on now,
one last question please how do i lock the focus to the same object i tried:
length(thisComp.layer(“Null 1”).position,position) no good
length(thisComp.layer(“Null 1”).anchorPoint,position) almosttarget = thisComp.layer(“Null 1”);
v1 = target.toWorld(target.anchorPoint) – toWorld([0,0,0]);
v2 = toWorldVec([0,0,1]);
dot(v1,v2)Zero?
🙂
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If you have the POI where you want focus to be, this should work:
length(transform.pointOfInterest, toWorld([0,0,0]))
Dan
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No im afraid not
error says no transform property… i have tried a few things but… i missing somthing
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Ah, AE 6.5. This should work:
length(pointOfInterest, toWorld([0,0,0]))
Dan
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Dan, your the man,
That works nicely, you have been a great help, I really appreciate you taking the time, deadlines are unforgiving. I’m going to be exploring expressions a lot more in the future, so i will probably bug you some more soon, i will certainly be keeping an eye on the forum.
have a fantastic, crazy, creative, relaxing day 🙂 Im going to have somwe fun playing with pictures and making them dance 🙂
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