Cura/plugins/pauseAtZ.py

   1 #Name: Pause at height
   2 #Info: Pause the printer at a certain height
   3 #Depend: GCode
   4 #Type: postprocess
   5 #Param: pauseLevel(float:5.0) Pause height (mm)
   6 #Param: parkX(float:190) Head park X (mm)
   7 #Param: parkY(float:190) Head park Y (mm)
   8 #Param: retractAmount(float:5) Retraction amount (mm)
   9
  10 import re
  11
  12 def getValue(line, key, default = None):
  13         if not key in line or (';' in line and line.find(key) > line.find(';')):
  14                 return default
  15         subPart = line[line.find(key) + 1:]
  16         m = re.search('^[0-9]+\.?[0-9]*', subPart)
  17         if m == None:
  18                 return default
  19         try:
  20                 return float(m.group(0))
  21         except:
  22                 return default
  23
  24 with open(filename, "r") as f:
  25         lines = f.readlines()
  26
  27 z = 0
  28 x = 0
  29 y = 0
  30 pauseState = 0
  31 with open(filename, "w") as f:
  32         for line in lines:
  33                 if getValue(line, 'G', None) == 1:
  34                         newZ = getValue(line, 'Z', z)
  35                         x = getValue(line, 'X', x)
  36                         y = getValue(line, 'Y', y)
  37                         if newZ != z:
  38                                 z = newZ
  39                                 if z < pauseLevel and pauseState == 0:
  40                                         pauseState = 1
  41                                 if z >= pauseLevel and pauseState == 1:
  42                                         pauseState = 2
  43                                         #Retract
  44                                         f.write("M83\n")
  45                                         f.write("G1 E-%f F6000\n" % (retractAmount))
  46                                         #Move the head away
  47                                         f.write("G1 X%f Y%f F9000\n" % (parkX, parkY))
  48                                         #Wait till the user continues printing
  49                                         f.write("M0\n")
  50                                         #Move the head back
  51                                         f.write("G1 X%f Y%f F9000\n" % (x, y))
  52                                         f.write("G1 E%f F6000\n" % (retractAmount))
  53                                         f.write("G1 F9000\n")
  54                                         f.write("M82\n")
  55                 f.write(line)