Here is the scene file for an unrolling strategy I've had in mind for awhile. I
finally sat down and finished it. A sample of the results is in p.b.i. I didn't
implement this as a macro because of it's dependence on the camera. You really
need the whole scene file.

This can be useful for several things, but primarily the results can be used as
a background image in a paint program to help align texture details when
cylindrically or spherically mapping objects not supporting UV-mapping. You
could also use it to support uv-mapping 'in reverse' (so to speak) if you use it
as a target in an image morphing package (i.e. Hijaak Morph)


--
light_source{0,1}#macro c(J,a)sphere{0,1pigment{rgb z}scale a translate J+O}
#end#macro B(R,V,O)c(0,4)intersection{c(V,R)difference{c(-z*4x+10)c(-z*4.1x+
10)c(0<7.5,45,5>)}}#end B(12,0z*25)B(8y*4<0,12,50>)          // Batronyx ^"^

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