Cura/util/gcodeInterpreter.py

   1 import sys
   2 import math
   3 import re
   4 import os
   5
   6 import util3d
   7 import profile
   8
   9 class gcodePath(object):
  10         def __init__(self, newType, pathType, layerThickness, startPoint):
  11                 self.type = newType
  12                 self.pathType = pathType
  13                 self.layerThickness = layerThickness
  14                 self.list = [startPoint]
  15
  16 class gcode(object):
  17         def __init__(self):
  18                 self.regMatch = {}
  19                 self.layerList = []
  20                 self.extrusionAmount = 0
  21                 self.totalMoveTimeMinute = 0
  22                 self.progressCallback = None
  23
  24         def load(self, filename):
  25                 if os.path.isfile(filename):
  26                         self._fileSize = os.stat(filename).st_size
  27                         gcodeFile = open(filename, 'r')
  28                         self._load(gcodeFile)
  29                         gcodeFile.close()
  30
  31         def loadList(self, l):
  32                 self._load(l)
  33
  34         def calculateWeight(self):
  35                 #Calculates the weight of the filament in kg
  36                 radius = float(profile.getProfileSetting('filament_diameter')) / 2
  37                 volumeM3 = (self.extrusionAmount * (math.pi * radius * radius)) / (1000*1000*1000)
  38                 return volumeM3 * profile.getPreferenceFloat('filament_density')
  39
  40         def calculateCost(self):
  41                 cost_kg = profile.getPreferenceFloat('filament_cost_kg')
  42                 cost_meter = profile.getPreferenceFloat('filament_cost_meter')
  43                 if cost_kg > 0.0 and cost_meter > 0.0:
  44                         return "%.2f / %.2f" % (self.calculateWeight() * cost_kg, self.extrusionAmount / 1000 * cost_meter)
  45                 elif cost_kg > 0.0:
  46                         return "%.2f" % (self.calculateWeight() * cost_kg)
  47                 elif cost_meter > 0.0:
  48                         return "%.2f" % (self.extrusionAmount / 1000 * cost_meter)
  49                 return False
  50
  51         def _load(self, gcodeFile):
  52                 filePos = 0
  53                 pos = util3d.Vector3()
  54                 posOffset = util3d.Vector3()
  55                 currentE = 0.0
  56                 totalExtrusion = 0.0
  57                 maxExtrusion = 0.0
  58                 currentExtruder = 0
  59                 totalMoveTimeMinute = 0.0
  60                 scale = 1.0
  61                 posAbs = True
  62                 feedRate = 3600
  63                 layerThickness = 0.1
  64                 pathType = 'CUSTOM';
  65                 startCodeDone = False
  66                 currentLayer = []
  67                 currentPath = gcodePath('move', pathType, layerThickness, pos.copy())
  68                 currentPath.list[0].e = totalExtrusion
  69                 currentLayer.append(currentPath)
  70                 for line in gcodeFile:
  71                         if type(line) is tuple:
  72                                 line = line[0]
  73                         if self.progressCallback != None:
  74                                 if filePos != gcodeFile.tell():
  75                                         filePos = gcodeFile.tell()
  76                                         self.progressCallback(float(filePos) / float(self._fileSize))
  77
  78                         #Parse Cura_SF comments
  79                         if line.startswith(';TYPE:'):
  80                                 pathType = line[6:].strip()
  81                                 if pathType != "CUSTOM":
  82                                         startCodeDone = True
  83
  84                         if ';' in line:
  85                                 #Slic3r GCode comment parser
  86                                 comment = line[line.find(';')+1:].strip()
  87                                 if comment == 'fill':
  88                                         pathType = 'FILL'
  89                                 elif comment == 'perimeter':
  90                                         pathType = 'WALL-INNER'
  91                                 elif comment == 'skirt':
  92                                         pathType = 'SKIRT'
  93                                 if comment.startswith('LAYER:'):
  94                                         self.layerList.append(currentLayer)
  95                                         currentLayer = []
  96                                 if pathType != "CUSTOM":
  97                                         startCodeDone = True
  98                                 line = line[0:line.find(';')]
  99                         T = self.getCodeInt(line, 'T')
 100                         if T is not None:
 101                                 if currentExtruder > 0:
 102                                         posOffset.x -= profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 103                                         posOffset.y -= profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 104                                 currentExtruder = T
 105                                 if currentExtruder > 0:
 106                                         posOffset.x += profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 107                                         posOffset.y += profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 108
 109                         G = self.getCodeInt(line, 'G')
 110                         if G is not None:
 111                                 if G == 0 or G == 1:    #Move
 112                                         x = self.getCodeFloat(line, 'X')
 113                                         y = self.getCodeFloat(line, 'Y')
 114                                         z = self.getCodeFloat(line, 'Z')
 115                                         e = self.getCodeFloat(line, 'E')
 116                                         f = self.getCodeFloat(line, 'F')
 117                                         oldPos = pos.copy()
 118                                         if x is not None:
 119                                                 if posAbs:
 120                                                         pos.x = x * scale + posOffset.x
 121                                                 else:
 122                                                         pos.x += x * scale
 123                                         if y is not None:
 124                                                 if posAbs:
 125                                                         pos.y = y * scale + posOffset.y
 126                                                 else:
 127                                                         pos.y += y * scale
 128                                         if z is not None:
 129                                                 if posAbs:
 130                                                         pos.z = z * scale + posOffset.z
 131                                                 else:
 132                                                         pos.z += z * scale
 133                                         if f is not None:
 134                                                 feedRate = f
 135                                         if x is not None or y is not None or z is not None:
 136                                                 totalMoveTimeMinute += (oldPos - pos).vsize() / feedRate
 137                                         moveType = 'move'
 138                                         if e is not None:
 139                                                 if posAbs:
 140                                                         if e > currentE:
 141                                                                 moveType = 'extrude'
 142                                                         if e < currentE:
 143                                                                 moveType = 'retract'
 144                                                         totalExtrusion += e - currentE
 145                                                         currentE = e
 146                                                 else:
 147                                                         if e > 0:
 148                                                                 moveType = 'extrude'
 149                                                         if e < 0:
 150                                                                 moveType = 'retract'
 151                                                         totalExtrusion += e
 152                                                         currentE += e
 153                                                 if totalExtrusion > maxExtrusion:
 154                                                         maxExtrusion = totalExtrusion
 155                                         if moveType == 'move' and oldPos.z != pos.z:
 156                                                 if oldPos.z > pos.z and abs(oldPos.z - pos.z) > 5.0 and pos.z < 1.0:
 157                                                         oldPos.z = 0.0
 158                                                 layerThickness = abs(oldPos.z - pos.z)
 159                                         if currentPath.type != moveType or currentPath.pathType != pathType:
 160                                                 currentPath = gcodePath(moveType, pathType, layerThickness, currentPath.list[-1])
 161                                                 currentLayer.append(currentPath)
 162                                         newPos = pos.copy()
 163                                         newPos.e = totalExtrusion
 164                                         currentPath.list.append(newPos)
 165                                 elif G == 4:    #Delay
 166                                         S = self.getCodeFloat(line, 'S')
 167                                         if S is not None:
 168                                                 totalMoveTimeMinute += S / 60
 169                                         P = self.getCodeFloat(line, 'P')
 170                                         if P is not None:
 171                                                 totalMoveTimeMinute += P / 60 / 1000
 172                                 elif G == 20:   #Units are inches
 173                                         scale = 25.4
 174                                 elif G == 21:   #Units are mm
 175                                         scale = 1.0
 176                                 elif G == 28:   #Home
 177                                         x = self.getCodeFloat(line, 'X')
 178                                         y = self.getCodeFloat(line, 'Y')
 179                                         z = self.getCodeFloat(line, 'Z')
 180                                         if x is None and y is None and z is None:
 181                                                 pos = util3d.Vector3()
 182                                         else:
 183                                                 if x is not None:
 184                                                         pos.x = 0.0
 185                                                 if y is not None:
 186                                                         pos.y = 0.0
 187                                                 if z is not None:
 188                                                         pos.z = 0.0
 189                                 elif G == 90:   #Absolute position
 190                                         posAbs = True
 191                                 elif G == 91:   #Relative position
 192                                         posAbs = False
 193                                 elif G == 92:
 194                                         x = self.getCodeFloat(line, 'X')
 195                                         y = self.getCodeFloat(line, 'Y')
 196                                         z = self.getCodeFloat(line, 'Z')
 197                                         e = self.getCodeFloat(line, 'E')
 198                                         if e is not None:
 199                                                 currentE = e
 200                                         if x is not None:
 201                                                 posOffset.x = pos.x - x
 202                                         if y is not None:
 203                                                 posOffset.y = pos.y - y
 204                                         if z is not None:
 205                                                 posOffset.z = pos.z - z
 206                                 else:
 207                                         print "Unknown G code:" + str(G)
 208                         else:
 209                                 M = self.getCodeInt(line, 'M')
 210                                 if M is not None:
 211                                         if M == 1:      #Message with possible wait (ignored)
 212                                                 pass
 213                                         elif M == 80:   #Enable power supply
 214                                                 pass
 215                                         elif M == 81:   #Suicide/disable power supply
 216                                                 pass
 217                                         elif M == 84:   #Disable step drivers
 218                                                 pass
 219                                         elif M == 92:   #Set steps per unit
 220                                                 pass
 221                                         elif M == 104:  #Set temperature, no wait
 222                                                 pass
 223                                         elif M == 105:  #Get temperature
 224                                                 pass
 225                                         elif M == 106:  #Enable fan
 226                                                 pass
 227                                         elif M == 107:  #Disable fan
 228                                                 pass
 229                                         elif M == 108:  #Extruder RPM (these should not be in the final GCode, but they are)
 230                                                 pass
 231                                         elif M == 109:  #Set temperature, wait
 232                                                 pass
 233                                         elif M == 110:  #Reset N counter
 234                                                 pass
 235                                         elif M == 113:  #Extruder PWM (these should not be in the final GCode, but they are)
 236                                                 pass
 237                                         elif M == 140:  #Set bed temperature
 238                                                 pass
 239                                         elif M == 190:  #Set bed temperature & wait
 240                                                 pass
 241                                         else:
 242                                                 print "Unknown M code:" + str(M)
 243                 self.layerList.append(currentLayer)
 244                 self.extrusionAmount = maxExtrusion
 245                 self.totalMoveTimeMinute = totalMoveTimeMinute
 246                 #print "Extruded a total of: %d mm of filament" % (self.extrusionAmount)
 247                 #print "Estimated print duration: %.2f minutes" % (self.totalMoveTimeMinute)
 248
 249         def getCodeInt(self, line, code):
 250                 if code not in self.regMatch:
 251                         self.regMatch[code] = re.compile(code + '([^\s]+)')
 252                 m = self.regMatch[code].search(line)
 253                 if m == None:
 254                         return None
 255                 try:
 256                         return int(m.group(1))
 257                 except:
 258                         return None
 259
 260         def getCodeFloat(self, line, code):
 261                 if code not in self.regMatch:
 262                         self.regMatch[code] = re.compile(code + '([^\s]+)')
 263                 m = self.regMatch[code].search(line)
 264                 if m == None:
 265                         return None
 266                 try:
 267                         return float(m.group(1))
 268                 except:
 269                         return None
 270
 271 if __name__ == '__main__':
 272         for filename in sys.argv[1:]:
 273                 gcode().load(filename)
 274