You can find sth. similar in the last example of the following WikiPOV
site: http://povray.tirnalong.com/ow.asp?DropOnSurface
I like your block version, it looks kinda retro.
Florian
--
camera{look_at-y*10location<8,-3,-8>*10}#local a=0;#while(a<999)sphere{
#local _=.01*a-4.99;#local p=a*.01-5;#local c=.01*a-4.995;<sin(p*pi)*5p
*10pow(p,5)*.01>sin(c*c*c*.1)+1pigment{rgb 3}}#local a=a+1;#end
/******** http://www.torfbold.com ******** http://www.imp.org ********/
