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Calling frames of image sequence using Angle Controls
Hey folks! I’ve got an interesting puzzle I hope you can help me solve.
For a current project of mine, I will be provided an image sequence. The sequence is a long series of renders of a 3D model, each at a slightly different angle (say 30-degree increments on each axis). I’m looking to use this image sequence to create a rig in AE that will let me give the illusion of rotating the model in 3D space, ideally via three Angle Controls on a control layer. It’s supposed to look illustrative or stop-motion-esque, so the jerky nature of the resulting rig would be A-OK.
I figure the magical expression driving this would live in the image sequence’s Time Remap property, but I’m not sure how to write the code that could take the values of three Angle Controls and call the correct frame from the sequence.
As yet I’m not sure how the images in the sequence would be organized, but I can likely organize them however would make the most sense for the expression.
Any insights? As always, your collective wisdom is much appreciated! Thanks in advance,
Jared Flynn
Motion Graphics Designer / Lead AE
Lone Wolf Documentary Group -
1 Reply
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You’re on the right track with the time remapping expression. I’d guess you might only need two angle controls — one for latitude (0-180) and one for longitude (0-360). The exact expression depends on the sequence of your images, but it would make sense to have them arranged in blocks for each latitude. Then your expression just uses the latitude control to index to the correct block, and the longitude control to index to the correct image within the block. Then just convert the index to a frame number and the frame number to a time. Pretty straight forward stuff.
Dan
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