Dymaxion Projection Animation

(Link to Original Page by Chris Rywalt)
(Chris's page circa 2007)
Note the updated graphics!

(Chris's page circa 2003)

My animation of an unfolding Dymaxion Map is available as a 1.4 meg ZIPped 640x480 QuickTime or as a 40k ZIPped 320x240 QuickTime or as a 400k 160x120 Java animation.

This is an animation illustrating Buckminster Fuller's Dymaxion Map Projection of Earth. While this animation is not mathematically accurate, I think it's a good illustration of the concept.

Basically, Fuller started with the data for the spherical Earth surface. He projected the data from the sphere onto an icosahedron -- the twenty- sided Platonic solid -- and then unfolded that icosahedron out flat.

The advantages of this method are many: for one thing, it's possible to align the surface data with the icosahedron in such a way that, when unfolded, no landmass is cut into, which allows us to see the Earth's landmasses as one continent (this is where my illustration falls short; note that the landmass is cut into in a couple of spots); also, this method results in nearly no distortion of either size or shape of the landmasses, unlike most other projections (the familiar classroom Mercator map or the Peters projection, for example).

Anyway, this illustration was made using a C program to output Persistence of Vision Raytracer files, which were then raytraced on a DEC Alpha running OSF/1. Each of the 78 frames took about four minutes at 640x480 antialiased. The resulting Targa files were then nailed together into a QuickTime movie using movieconvert on an SGI Indy.

The mapping was done in POV by spherically mapping what looks like a GeoSphere graphic of the Earth around the sphere or icosahedron. That's where the mathematical inaccuracy comes in.

Both animations are hereby released to the public domain.

Thanks to the following information sources:

And, of course, thanks to the works of Bucky Fuller.

Chris Rywalt
Copyleft © 1995 Christopher Rywalt.