Cura/util/gcodeInterpreter.py

   1 from __future__ import absolute_import
   2
   3 import sys
   4 import math
   5 import os
   6 import time
   7
   8 from Cura.util import profile
   9
  10 class gcodePath(object):
  11         def __init__(self, newType, pathType, layerThickness, startPoint):
  12                 self.type = newType
  13                 self.pathType = pathType
  14                 self.layerThickness = layerThickness
  15                 self.points = [startPoint]
  16                 self.extrusion = [0]
  17
  18 class gcode(object):
  19         def __init__(self):
  20                 self.regMatch = {}
  21                 self.layerList = []
  22                 self.extrusionAmount = 0
  23                 self.totalMoveTimeMinute = 0
  24                 self.progressCallback = None
  25
  26         def load(self, filename):
  27                 if os.path.isfile(filename):
  28                         self._fileSize = os.stat(filename).st_size
  29                         gcodeFile = open(filename, 'r')
  30                         self._load(gcodeFile)
  31                         gcodeFile.close()
  32
  33         def loadList(self, l):
  34                 self._load(l)
  35
  36         def calculateWeight(self):
  37                 #Calculates the weight of the filament in kg
  38                 radius = float(profile.getProfileSetting('filament_diameter')) / 2
  39                 volumeM3 = (self.extrusionAmount * (math.pi * radius * radius)) / (1000*1000*1000)
  40                 return volumeM3 * profile.getPreferenceFloat('filament_physical_density')
  41
  42         def calculateCost(self):
  43                 cost_kg = profile.getPreferenceFloat('filament_cost_kg')
  44                 cost_meter = profile.getPreferenceFloat('filament_cost_meter')
  45                 if cost_kg > 0.0 and cost_meter > 0.0:
  46                         return "%.2f / %.2f" % (self.calculateWeight() * cost_kg, self.extrusionAmount / 1000 * cost_meter)
  47                 elif cost_kg > 0.0:
  48                         return "%.2f" % (self.calculateWeight() * cost_kg)
  49                 elif cost_meter > 0.0:
  50                         return "%.2f" % (self.extrusionAmount / 1000 * cost_meter)
  51                 return None
  52
  53         def _load(self, gcodeFile):
  54                 pos = [0.0, 0.0, 0.0]
  55                 posOffset = [0.0, 0.0, 0.0]
  56                 currentE = 0.0
  57                 totalExtrusion = 0.0
  58                 maxExtrusion = 0.0
  59                 currentExtruder = 0
  60                 extrudeAmountMultiply = 1.0
  61                 totalMoveTimeMinute = 0.0
  62                 absoluteE = True
  63                 scale = 1.0
  64                 posAbs = True
  65                 feedRate = 3600.0
  66                 layerThickness = 0.1
  67                 pathType = 'CUSTOM';
  68                 currentLayer = []
  69                 currentPath = gcodePath('move', pathType, layerThickness, pos[:])
  70                 currentPath.extruder = currentExtruder
  71
  72                 currentLayer.append(currentPath)
  73                 for line in gcodeFile:
  74                         if type(line) is tuple:
  75                                 line = line[0]
  76
  77                         #Parse Cura_SF comments
  78                         if line.startswith(';TYPE:'):
  79                                 pathType = line[6:].strip()
  80
  81                         if ';' in line:
  82                                 #Slic3r GCode comment parser
  83                                 comment = line[line.find(';')+1:].strip()
  84                                 if comment == 'fill':
  85                                         pathType = 'FILL'
  86                                 elif comment == 'perimeter':
  87                                         pathType = 'WALL-INNER'
  88                                 elif comment == 'skirt':
  89                                         pathType = 'SKIRT'
  90                                 if comment.startswith('LAYER:'):
  91                                         self.layerList.append(currentLayer)
  92                                         if self.progressCallback is not None:
  93                                                 if self.progressCallback(float(gcodeFile.tell()) / float(self._fileSize)):
  94                                                         #Abort the loading, we can safely return as the results here will be discarded
  95                                                         gcodeFile.close()
  96                                                         return
  97                                         currentLayer = []
  98                                 line = line[0:line.find(';')]
  99                         T = getCodeInt(line, 'T')
 100                         if T is not None:
 101                                 if currentExtruder > 0:
 102                                         posOffset[0] -= profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 103                                         posOffset[1] -= profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 104                                 currentExtruder = T
 105                                 if currentExtruder > 0:
 106                                         posOffset[0] += profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 107                                         posOffset[1] += profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 108
 109                         G = getCodeInt(line, 'G')
 110                         if G is not None:
 111                                 if G == 0 or G == 1:    #Move
 112                                         x = getCodeFloat(line, 'X')
 113                                         y = getCodeFloat(line, 'Y')
 114                                         z = getCodeFloat(line, 'Z')
 115                                         e = getCodeFloat(line, 'E')
 116                                         f = getCodeFloat(line, 'F')
 117                                         oldPos = pos[:]
 118                                         if posAbs:
 119                                                 if x is not None:
 120                                                         pos[0] = x * scale + posOffset[0]
 121                                                 if y is not None:
 122                                                         pos[1] = y * scale + posOffset[1]
 123                                                 if z is not None:
 124                                                         pos[2] = z * scale + posOffset[2]
 125                                         else:
 126                                                 if x is not None:
 127                                                         pos[0] += x * scale
 128                                                 if y is not None:
 129                                                         pos[1] += y * scale
 130                                                 if z is not None:
 131                                                         pos[2] += z * scale
 132                                         if f is not None:
 133                                                 feedRate = f
 134                                         #if x is not None or y is not None or z is not None:
 135                                         #       diffX = oldPos[0] - pos[0]
 136                                         #       diffY = oldPos[1] - pos[1]
 137                                         #       totalMoveTimeMinute += math.sqrt(diffX * diffX + diffY * diffY) / feedRate
 138                                         moveType = 'move'
 139                                         if e is not None:
 140                                                 if absoluteE:
 141                                                         e -= currentE
 142                                                 if e > 0:
 143                                                         moveType = 'extrude'
 144                                                 if e < 0:
 145                                                         moveType = 'retract'
 146                                                 totalExtrusion += e
 147                                                 currentE += e
 148                                                 if totalExtrusion > maxExtrusion:
 149                                                         maxExtrusion = totalExtrusion
 150                                         else:
 151                                                 e = 0.0
 152                                         if moveType == 'move' and oldPos[2] != pos[2]:
 153                                                 if oldPos[2] > pos[2] and abs(oldPos[2] - pos[2]) > 5.0 and pos[2] < 1.0:
 154                                                         oldPos[2] = 0.0
 155                                                 layerThickness = abs(oldPos[2] - pos[2])
 156                                         if currentPath.type != moveType or currentPath.pathType != pathType:
 157                                                 currentPath = gcodePath(moveType, pathType, layerThickness, currentPath.points[-1])
 158                                                 currentPath.extruder = currentExtruder
 159                                                 currentLayer.append(currentPath)
 160
 161                                         currentPath.points.append(pos[:])
 162                                         currentPath.extrusion.append(e * extrudeAmountMultiply)
 163                                 elif G == 4:    #Delay
 164                                         S = getCodeFloat(line, 'S')
 165                                         if S is not None:
 166                                                 totalMoveTimeMinute += S / 60.0
 167                                         P = getCodeFloat(line, 'P')
 168                                         if P is not None:
 169                                                 totalMoveTimeMinute += P / 60.0 / 1000.0
 170                                 elif G == 20:   #Units are inches
 171                                         scale = 25.4
 172                                 elif G == 21:   #Units are mm
 173                                         scale = 1.0
 174                                 elif G == 28:   #Home
 175                                         x = getCodeFloat(line, 'X')
 176                                         y = getCodeFloat(line, 'Y')
 177                                         z = getCodeFloat(line, 'Z')
 178                                         if x is None and y is None and z is None:
 179                                                 pos = [0.0,0.0,0.0]
 180                                         else:
 181                                                 if x is not None:
 182                                                         pos[0] = 0.0
 183                                                 if y is not None:
 184                                                         pos[0] = 0.0
 185                                                 if z is not None:
 186                                                         pos[0] = 0.0
 187                                 elif G == 90:   #Absolute position
 188                                         posAbs = True
 189                                 elif G == 91:   #Relative position
 190                                         posAbs = False
 191                                 elif G == 92:
 192                                         x = getCodeFloat(line, 'X')
 193                                         y = getCodeFloat(line, 'Y')
 194                                         z = getCodeFloat(line, 'Z')
 195                                         e = getCodeFloat(line, 'E')
 196                                         if e is not None:
 197                                                 currentE = e
 198                                         if x is not None:
 199                                                 posOffset[0] = pos[0] - x
 200                                         if y is not None:
 201                                                 posOffset[1] = pos[1] - y
 202                                         if z is not None:
 203                                                 posOffset[2] = pos[2] - z
 204                                 else:
 205                                         print "Unknown G code:" + str(G)
 206                         else:
 207                                 M = getCodeInt(line, 'M')
 208                                 if M is not None:
 209                                         if M == 0:      #Message with possible wait (ignored)
 210                                                 pass
 211                                         elif 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 == 82:   #Absolute E
 218                                                 absoluteE = True
 219                                         elif M == 83:   #Relative E
 220                                                 absoluteE = False
 221                                         elif M == 84:   #Disable step drivers
 222                                                 pass
 223                                         elif M == 92:   #Set steps per unit
 224                                                 pass
 225                                         elif M == 101:  #Enable extruder
 226                                                 pass
 227                                         elif M == 103:  #Disable extruder
 228                                                 pass
 229                                         elif M == 104:  #Set temperature, no wait
 230                                                 pass
 231                                         elif M == 105:  #Get temperature
 232                                                 pass
 233                                         elif M == 106:  #Enable fan
 234                                                 pass
 235                                         elif M == 107:  #Disable fan
 236                                                 pass
 237                                         elif M == 108:  #Extruder RPM (these should not be in the final GCode, but they are)
 238                                                 pass
 239                                         elif M == 109:  #Set temperature, wait
 240                                                 pass
 241                                         elif M == 110:  #Reset N counter
 242                                                 pass
 243                                         elif M == 113:  #Extruder PWM (these should not be in the final GCode, but they are)
 244                                                 pass
 245                                         elif M == 117:  #LCD message
 246                                                 pass
 247                                         elif M == 140:  #Set bed temperature
 248                                                 pass
 249                                         elif M == 190:  #Set bed temperature & wait
 250                                                 pass
 251                                         elif M == 221:  #Extrude amount multiplier
 252                                                 s = getCodeFloat(line, 'S')
 253                                                 if s is not None:
 254                                                         extrudeAmountMultiply = s / 100.0
 255                                         else:
 256                                                 print "Unknown M code:" + str(M)
 257                 self.layerList.append(currentLayer)
 258                 if self.progressCallback is not None and self._fileSize > 0:
 259                         self.progressCallback(float(gcodeFile.tell()) / float(self._fileSize))
 260                 self.extrusionAmount = maxExtrusion
 261                 self.totalMoveTimeMinute = totalMoveTimeMinute
 262                 #print "Extruded a total of: %d mm of filament" % (self.extrusionAmount)
 263                 #print "Estimated print duration: %.2f minutes" % (self.totalMoveTimeMinute)
 264
 265 def getCodeInt(line, code):
 266         n = line.find(code) + 1
 267         if n < 1:
 268                 return None
 269         m = line.find(' ', n)
 270         try:
 271                 if m < 0:
 272                         return int(line[n:])
 273                 return int(line[n:m])
 274         except:
 275                 return None
 276
 277 def getCodeFloat(line, code):
 278         n = line.find(code) + 1
 279         if n < 1:
 280                 return None
 281         m = line.find(' ', n)
 282         try:
 283                 if m < 0:
 284                         return float(line[n:])
 285                 return float(line[n:m])
 286         except:
 287                 return None
 288
 289 if __name__ == '__main__':
 290         t = time.time()
 291         for filename in sys.argv[1:]:
 292                 g = gcode()
 293                 g.load(filename)
 294                 print g.totalMoveTimeMinute
 295         print time.time() - t
 296