// Last edited on 2024-05-27 23:02:46 by stolfi

#macro nut_plane(Ro, subfig)
  // The slicing plane for a nut with circumradius {R0}.
  // The {subfig} says which sub-figure we are making.
  
  #if ((subfig = 0) | (subfig = 8))
    #local Rx = 1.50*Ro;
    #local Ry = 1.50*Ro;
    #local P = box{ < -Rx, -Ry, -0.001 >, < +Rx, +Ry, +0.001 > texture{ nut_tx_spla } } 
  #else
    #local P = object{ nothing scale 0.1 }
  #end

  P
#end