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Controlling TimeRemapping relative to camera
Hi Dan and Expresso Gurus!
I’m trying to achieve the following effect –
Move AE’s camera using X & Z position and y-rotation with a pre-rendered 3D image (8 seconds). The 3D render is identical to a lazy susan effect – essentially rotation around its y-axis.
So, after placing this rendered file into AE. I’m hoping that an Expression can be used to control the TimeRemap value of this 3D file so that it maintains a true 3D perspective regardless of where the camera is and how the camera is animated.
I think this is achievable but i just can’t wrap my head around it.
Thanks!
RoRK -
2 Replies
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Hi Roland,
I think it’s going to be something like this:
numImages = 240;
offset = 270;
C = thisComp.activeCamera;
V = C.toWorld([0,0,0]) – toWorld(anchorPoint);
angle = (radiansToDegrees(Math.atan2(V[2],V[0])) + 180 +offset)%360;
angle*(numImages/360)*thisComp.frameDurationYou’ll need to set numImages to the number of images in your sequence and adjust offset (between 0 and 360) to get the frame you want when the camera is on the comp’s z axis. Also, please email me – I want to ask you something about this.
Dan
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Hi Dan, the old machine crashed – I don’t have your email address. Perhaps you can send me your Qs to rork_AT_broadcastGEMs_DOT_com
And thanks for the script!
RoRKbroadcastGEMs.com – the leader in customizable royalty-free animated backdrops
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