Yep, it's light rays. I used a duplicate of the comp as the source for a 'Set matte' effect on a plane, using alpha as the matte channel. This gave me a black and white matte of the rotating cube.I then applied the light rays effect to the plane, and linked the light rays effect to the same 3D point as the actual light. I could then move the 3D point and the scene updates correctly.
Awesome! Really like that ident, Null Unit. Very classy. Although it feels like it should maybe resolve to a non-animated, simpler version before disappearing. A bit like how idents at the start of movies might have a fancy animated intro, then resolve to a simple two-tone silhouette version.Glad the tutorial was useful - I'm thinking that particular super-fast style might be good for doing a series of quick tutes for advanced users.The blur doesn't affect the layers beneath, due to the 'none' trick with the light rays. This was actually something I only discovered while making the tutorial. Previously I've always done light rays on a plane, which is why I used Set Matte etc, so that I could work on the light rays without affecting the layers beneath. However, using light rays set to 'none' does a nice trick, in that the light rays uses the layers beneath as the source, without directly affecting them.
Was having a little play around earlier today and came up with this:!The way it's set up I can move the 3D light around and the 'volumetric' light shafts move with it. Particularly nice as the objects go into shadow.
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