Here's the link to the breakdown/tutorial of this
vimeo.com/43369196
My submission for the GreyScaleGorilla 5 second project "Nothing But Cubes"
greyscalegorilla.com/blog/2012/04/five-second-project-nothing-but-cubes/
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I've seen a few animations that looked hand drawn. I thought I'd give it a shot the way I think it's done;
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First step I did was to go into Cinema 4d and animate a few sweep nurbs on a spline to get the basic shapes. Then I went into After Effects and hand keyed ever frame of shape layers.
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For the text and built up cube I found a great little trick the other day. The animate drop down in each shape layer has a "Wiggle Path" section. Good stuff.