#include "common.pov" parametric { function { cos(2*pi*u - pi/2)*cos(2*pi*(-u+v)+pi/2) } function { cos(2*pi*v - pi/2)*cos(2*pi*(-u+v)+pi/2) } function { cos(2*pi*v - pi/2)*cos(2*pi*u-pi/2) } <0,0>, <0.5,1> contained_by { sphere { <0,0,0>, 2.5 } } accuracy 0.001 max_gradient 10 texture { T_Brass_5C } scale 0.9 } #include "tetrahedron.pov"