A simpler way to make a side of the cube with an image would be:
polygon
{ 4,0,x,x+y,y
pigment { image_map { tga "whatever.tga" } }
}
5 more of these properly rotated and translated and you are done.
--
main(i){char*_="BdsyFBThhHFBThhHFRz]NFTITQF|DJIFHQhhF";while(i=
*_++)for(;i>1;printf("%s",i-70?i&1?"[]":" ":(i=0,"\n")),i/=2);} /*- Warp. -*/
