//----------------------------- Bogen (arch) --------- difference{ box {<-1,0,-0.1>,< 1,1,0.1>} cylinder {<0,0,-0.15>,<0,0,0.15>,0.9 } texture{pigment{color White} normal {bumps 0.4 scale 0.007} finish {ambient 0.45 diffuse 0.55 phong 1}} scale <1,1,2> rotate <0,0,0> translate <0,0,0>} //------------------------------------------- end ----