// -----------------------------
//  Demo for cutting two planes
//  on different surfaces
// -----------------------------

//  fix rotation and perspective

rot_x=0.2618;
rot_y=0.3491;
rot_z=0;

perspective=central;

//  fix surface properties

surface2_red  =255;
surface2_green=0;
surface2_blue =0;

transparence =50;
thickness=14;
transparence2=30;
thickness2=25;

//  fix light

illumination=ambient_light+
             diffuse_light+
             reflected_light+
             transmitted_light; // calculate also transperence

//  the formulae

surface=x^2+z^2+y^2-70;
surface2=x^10+y^10+z^10-24114;

clear_screen;
draw_surface;

//  fix the curves

curve_width=3;
curve_red  =255;
curve_green=255;
curve_blue =255;

surface_n=2;
plane=x;
cut_with_plane;

surface_n=1; 
plane=y;
cut_with_plane;