Cura/util/gcodeInterpreter.py

   1 from __future__ import absolute_import
   2
   3 import sys
   4 import math
   5 import re
   6 import os
   7 import time
   8
   9 from Cura.util import util3d
  10 from Cura.util import profile
  11
  12 class gcodePath(object):
  13         def __init__(self, newType, pathType, layerThickness, startPoint):
  14                 self.type = newType
  15                 self.pathType = pathType
  16                 self.layerThickness = layerThickness
  17                 self.list = [startPoint]
  18
  19 class gcode(object):
  20         def __init__(self):
  21                 self.regMatch = {}
  22                 self.layerList = []
  23                 self.extrusionAmount = 0
  24                 self.totalMoveTimeMinute = 0
  25                 self.progressCallback = None
  26
  27         def load(self, filename):
  28                 if os.path.isfile(filename):
  29                         self._fileSize = os.stat(filename).st_size
  30                         gcodeFile = open(filename, 'r')
  31                         self._load(gcodeFile)
  32                         gcodeFile.close()
  33
  34         def loadList(self, l):
  35                 self._load(l)
  36
  37         def calculateWeight(self):
  38                 #Calculates the weight of the filament in kg
  39                 radius = float(profile.getProfileSetting('filament_diameter')) / 2
  40                 volumeM3 = (self.extrusionAmount * (math.pi * radius * radius)) / (1000*1000*1000)
  41                 return volumeM3 * profile.getPreferenceFloat('filament_density')
  42
  43         def calculateCost(self):
  44                 cost_kg = profile.getPreferenceFloat('filament_cost_kg')
  45                 cost_meter = profile.getPreferenceFloat('filament_cost_meter')
  46                 if cost_kg > 0.0 and cost_meter > 0.0:
  47                         return "%.2f / %.2f" % (self.calculateWeight() * cost_kg, self.extrusionAmount / 1000 * cost_meter)
  48                 elif cost_kg > 0.0:
  49                         return "%.2f" % (self.calculateWeight() * cost_kg)
  50                 elif cost_meter > 0.0:
  51                         return "%.2f" % (self.extrusionAmount / 1000 * cost_meter)
  52                 return None
  53
  54         def _load(self, gcodeFile):
  55                 pos = util3d.Vector3()
  56                 posOffset = util3d.Vector3()
  57                 currentE = 0.0
  58                 totalExtrusion = 0.0
  59                 maxExtrusion = 0.0
  60                 currentExtruder = 0
  61                 extrudeAmountMultiply = 1.0
  62                 totalMoveTimeMinute = 0.0
  63                 absoluteE = True
  64                 scale = 1.0
  65                 posAbs = True
  66                 feedRate = 3600
  67                 layerThickness = 0.1
  68                 pathType = 'CUSTOM';
  69                 currentLayer = []
  70                 currentPath = gcodePath('move', pathType, layerThickness, pos.copy())
  71                 currentPath.list[0].e = totalExtrusion
  72                 currentPath.list[0].extrudeAmountMultiply = extrudeAmountMultiply
  73                 currentLayer.append(currentPath)
  74                 for line in gcodeFile:
  75                         if type(line) is tuple:
  76                                 line = line[0]
  77
  78                         #Parse Cura_SF comments
  79                         if line.startswith(';TYPE:'):
  80                                 pathType = line[6:].strip()
  81
  82                         if ';' in line:
  83                                 #Slic3r GCode comment parser
  84                                 comment = line[line.find(';')+1:].strip()
  85                                 if comment == 'fill':
  86                                         pathType = 'FILL'
  87                                 elif comment == 'perimeter':
  88                                         pathType = 'WALL-INNER'
  89                                 elif comment == 'skirt':
  90                                         pathType = 'SKIRT'
  91                                 if comment.startswith('LAYER:'):
  92                                         self.layerList.append(currentLayer)
  93                                         if self.progressCallback is not None:
  94                                                 if self.progressCallback(float(gcodeFile.tell()) / float(self._fileSize)):
  95                                                         #Abort the loading, we can safely return as the results here will be discarded
  96                                                         gcodeFile.close()
  97                                                         return
  98                                         currentLayer = []
  99                                 line = line[0:line.find(';')]
 100                         T = self.getCodeInt(line, 'T')
 101                         if T is not None:
 102                                 if currentExtruder > 0:
 103                                         posOffset.x -= profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 104                                         posOffset.y -= profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 105                                 currentExtruder = T
 106                                 if currentExtruder > 0:
 107                                         posOffset.x += profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 108                                         posOffset.y += profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 109
 110                         G = self.getCodeInt(line, 'G')
 111                         if G is not None:
 112                                 if G == 0 or G == 1:    #Move
 113                                         x = self.getCodeFloat(line, 'X')
 114                                         y = self.getCodeFloat(line, 'Y')
 115                                         z = self.getCodeFloat(line, 'Z')
 116                                         e = self.getCodeFloat(line, 'E')
 117                                         f = self.getCodeFloat(line, 'F')
 118                                         oldPos = pos.copy()
 119                                         if x is not None:
 120                                                 if posAbs:
 121                                                         pos.x = x * scale + posOffset.x
 122                                                 else:
 123                                                         pos.x += x * scale
 124                                         if y is not None:
 125                                                 if posAbs:
 126                                                         pos.y = y * scale + posOffset.y
 127                                                 else:
 128                                                         pos.y += y * scale
 129                                         if z is not None:
 130                                                 if posAbs:
 131                                                         pos.z = z * scale + posOffset.z
 132                                                 else:
 133                                                         pos.z += z * scale
 134                                         if f is not None:
 135                                                 feedRate = f
 136                                         if x is not None or y is not None or z is not None:
 137                                                 totalMoveTimeMinute += (oldPos - pos).vsize() / feedRate
 138                                         moveType = 'move'
 139                                         if e is not None:
 140                                                 if not absoluteE:
 141                                                         e += currentE
 142                                                 if posAbs:
 143                                                         if e > currentE:
 144                                                                 moveType = 'extrude'
 145                                                         if e < currentE:
 146                                                                 moveType = 'retract'
 147                                                 else:
 148                                                         if e > 0:
 149                                                                 moveType = 'extrude'
 150                                                         if e < 0:
 151                                                                 moveType = 'retract'
 152                                                 totalExtrusion += e - currentE
 153                                                 currentE = e
 154                                                 if totalExtrusion > maxExtrusion:
 155                                                         maxExtrusion = totalExtrusion
 156                                         if moveType == 'move' and oldPos.z != pos.z:
 157                                                 if oldPos.z > pos.z and abs(oldPos.z - pos.z) > 5.0 and pos.z < 1.0:
 158                                                         oldPos.z = 0.0
 159                                                 layerThickness = abs(oldPos.z - pos.z)
 160                                         if currentPath.type != moveType or currentPath.pathType != pathType:
 161                                                 currentPath = gcodePath(moveType, pathType, layerThickness, currentPath.list[-1])
 162                                                 currentLayer.append(currentPath)
 163                                         newPos = pos.copy()
 164                                         newPos.e = totalExtrusion
 165                                         newPos.extrudeAmountMultiply = extrudeAmountMultiply
 166                                         currentPath.list.append(newPos)
 167                                 elif G == 4:    #Delay
 168                                         S = self.getCodeFloat(line, 'S')
 169                                         if S is not None:
 170                                                 totalMoveTimeMinute += S / 60
 171                                         P = self.getCodeFloat(line, 'P')
 172                                         if P is not None:
 173                                                 totalMoveTimeMinute += P / 60 / 1000
 174                                 elif G == 20:   #Units are inches
 175                                         scale = 25.4
 176                                 elif G == 21:   #Units are mm
 177                                         scale = 1.0
 178                                 elif G == 28:   #Home
 179                                         x = self.getCodeFloat(line, 'X')
 180                                         y = self.getCodeFloat(line, 'Y')
 181                                         z = self.getCodeFloat(line, 'Z')
 182                                         if x is None and y is None and z is None:
 183                                                 pos = util3d.Vector3()
 184                                         else:
 185                                                 if x is not None:
 186                                                         pos.x = 0.0
 187                                                 if y is not None:
 188                                                         pos.y = 0.0
 189                                                 if z is not None:
 190                                                         pos.z = 0.0
 191                                 elif G == 90:   #Absolute position
 192                                         posAbs = True
 193                                 elif G == 91:   #Relative position
 194                                         posAbs = False
 195                                 elif G == 92:
 196                                         x = self.getCodeFloat(line, 'X')
 197                                         y = self.getCodeFloat(line, 'Y')
 198                                         z = self.getCodeFloat(line, 'Z')
 199                                         e = self.getCodeFloat(line, 'E')
 200                                         if e is not None:
 201                                                 currentE = e
 202                                         if x is not None:
 203                                                 posOffset.x = pos.x - x
 204                                         if y is not None:
 205                                                 posOffset.y = pos.y - y
 206                                         if z is not None:
 207                                                 posOffset.z = pos.z - z
 208                                 else:
 209                                         print "Unknown G code:" + str(G)
 210                         else:
 211                                 M = self.getCodeInt(line, 'M')
 212                                 if M is not None:
 213                                         if M == 0:      #Message with possible wait (ignored)
 214                                                 pass
 215                                         elif M == 1:    #Message with possible wait (ignored)
 216                                                 pass
 217                                         elif M == 80:   #Enable power supply
 218                                                 pass
 219                                         elif M == 81:   #Suicide/disable power supply
 220                                                 pass
 221                                         elif M == 82:   #Absolute E
 222                                                 absoluteE = True
 223                                         elif M == 83:   #Relative E
 224                                                 absoluteE = False
 225                                         elif M == 84:   #Disable step drivers
 226                                                 pass
 227                                         elif M == 92:   #Set steps per unit
 228                                                 pass
 229                                         elif M == 101:  #Enable extruder
 230                                                 pass
 231                                         elif M == 103:  #Disable extruder
 232                                                 pass
 233                                         elif M == 104:  #Set temperature, no wait
 234                                                 pass
 235                                         elif M == 105:  #Get temperature
 236                                                 pass
 237                                         elif M == 106:  #Enable fan
 238                                                 pass
 239                                         elif M == 107:  #Disable fan
 240                                                 pass
 241                                         elif M == 108:  #Extruder RPM (these should not be in the final GCode, but they are)
 242                                                 pass
 243                                         elif M == 109:  #Set temperature, wait
 244                                                 pass
 245                                         elif M == 110:  #Reset N counter
 246                                                 pass
 247                                         elif M == 113:  #Extruder PWM (these should not be in the final GCode, but they are)
 248                                                 pass
 249                                         elif M == 117:  #LCD message
 250                                                 pass
 251                                         elif M == 140:  #Set bed temperature
 252                                                 pass
 253                                         elif M == 190:  #Set bed temperature & wait
 254                                                 pass
 255                                         elif M == 221:  #Extrude amount multiplier
 256                                                 s = self.getCodeFloat(line, 'S')
 257                                                 if s != None:
 258                                                         extrudeAmountMultiply = s / 100.0
 259                                         else:
 260                                                 print "Unknown M code:" + str(M)
 261                 self.layerList.append(currentLayer)
 262                 if self.progressCallback is not None and self._fileSize > 0:
 263                         self.progressCallback(float(gcodeFile.tell()) / float(self._fileSize))
 264                 self.extrusionAmount = maxExtrusion
 265                 self.totalMoveTimeMinute = totalMoveTimeMinute
 266                 #print "Extruded a total of: %d mm of filament" % (self.extrusionAmount)
 267                 #print "Estimated print duration: %.2f minutes" % (self.totalMoveTimeMinute)
 268
 269         def getCodeInt(self, line, code):
 270                 n = line.find(code) + 1
 271                 if n < 1:
 272                         return None
 273                 m = line.find(' ', n)
 274                 try:
 275                         if m < 0:
 276                                 return int(line[n:])
 277                         return int(line[n:m])
 278                 except:
 279                         return None
 280
 281         def getCodeFloat(self, line, code):
 282                 n = line.find(code) + 1
 283                 if n < 1:
 284                         return None
 285                 m = line.find(' ', n)
 286                 try:
 287                         if m < 0:
 288                                 return float(line[n:])
 289                         return float(line[n:m])
 290                 except:
 291                         return None
 292
 293 if __name__ == '__main__':
 294         t = time.time()
 295         for filename in sys.argv[1:]:
 296                 g = gcode()
 297                 g.load(filename)
 298                 print g.totalMoveTimeMinute
 299         print time.time() - t
 300