text: import os
  import tempfile
  import platform
  
  #
  # OpenSCAD connection (for geometry generation)
  #
  
  def locate_openscad():
      """local path to OpenSCAD binary on various platforms (currently hardcoded...)"""
      if ( platform.system() == "Windows" ):
          return "\"C:\\Program Files (x86)\\OpenSCAD\\openscad.exe\""
      elif ( platform.system() == "Darwin" ):
          return "/Applications/OpenSCAD.app/Contents/MacOS/OpenSCAD"
      else:
          return "openscad"       # assume this is right on linux...
  
  def run_openscad_script(scad_file, output_file):
      """execute an OpenSCAD script stored in scad_file and write the result to output_file"""
      command = locate_openscad() + " -o " + output_file + " " + scad_file
      #print command    #debugging
      status = os.system(r'"%s"'  %command)
      return (status == 0)
  
  def run_openscad_source(script_source, output_file):
      """execute OpenSCAD source code and write the result to output_file"""
      f = tempfile.NamedTemporaryFile(delete=False)
      f.write(script_source)
      f.close()
      command = locate_openscad() + " -o " + output_file + " " + f.name
      #print command  #debugging
      status = os.system(r'"%s"'  %command)
      os.unlink(f.name)
      return (status == 0)
  