// http://xahlee.org/3d/index.html // two intersecting pentagrams #include "colors.inc" camera { location <7,15,-9> * .13 look_at 0 } light_source {<20, 15, 20> color White} prism { linear_sweep linear_spline 0, // starting height .4, // ending height 12, // the number of coordinates below <1., 0.>, <-0.81, 0.59>, <0.31, -0.95>, <0.31, 0.95>, <-0.81, -0.59>, <1.,0.>, <1.3, 1.1>, <-0.26, 0.032>, <1.6, -0.049>, <0.15, 1.1>, <0.66, -0.7>, <1.3,1.1> texture{pigment{color Red}} finish {ambient .1 specular 3} } plane { <0,1,0>, -0.008 pigment {checker color White, color Gray}}