text: import sys
  sys.path.append( "../psml" )
  
  from psml import *
  
  def snowman():
     return ( sphere( 15 ) + 
         shift( 0, 0, 18 ) ** (
             sphere( 10 ) +
             rotate( 90, 0, 0 ) ** cylinder( 2, 15 )))
  
  m = snowman()
        
  facets( 10 )      
        
  m = shift( 40, 0, 0 ) ** m + snowman()   
  
  facets( 5 )      
        
  m = shift( 40, 0, 0 ) ** m + snowman()     
  
  m.write()      