text: #!/usr/bin/env python
  
  import json
  
  spacing = 0.11  # m
  
  lines = []
  for c in range(-12, 13):
      rs = [range(50), reversed(range(50))][c % 2]
      for r in rs:
          line = {'point':[c*spacing, 0, (r - 24.5)*spacing]}
          lines.append(line)
          
  print json.dumps(lines, indent=2)
  