Cura/util/gcodeInterpreter.py

   1 from __future__ import absolute_import
   2 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
   3
   4 import sys
   5 import math
   6 import os
   7 import time
   8 import numpy
   9
  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.points = [startPoint]
  18 #               self.extrusion = [0.0]
  19 def gcodePath(newType, pathType, layerThickness, startPoint):
  20         return {'type': newType,
  21                         'pathType': pathType,
  22                         'layerThickness': layerThickness,
  23                         'points': [startPoint],
  24                         'extrusion': [0.0]}
  25
  26 class gcode(object):
  27         def __init__(self):
  28                 self.regMatch = {}
  29                 self.layerList = []
  30                 self.extrusionAmount = 0
  31                 self.totalMoveTimeMinute = 0
  32                 self.filename = None
  33                 self.progressCallback = None
  34
  35         def load(self, filename):
  36                 if os.path.isfile(filename):
  37                         self.filename = filename
  38                         self._fileSize = os.stat(filename).st_size
  39                         gcodeFile = open(filename, 'r')
  40                         self._load(gcodeFile)
  41                         gcodeFile.close()
  42
  43         def loadList(self, l):
  44                 self.filename = None
  45                 self._load(l)
  46
  47         def calculateWeight(self):
  48                 #Calculates the weight of the filament in kg
  49                 radius = float(profile.getProfileSetting('filament_diameter')) / 2
  50                 volumeM3 = (self.extrusionAmount * (math.pi * radius * radius)) / (1000*1000*1000)
  51                 return volumeM3 * profile.getPreferenceFloat('filament_physical_density')
  52
  53         def calculateCost(self):
  54                 cost_kg = profile.getPreferenceFloat('filament_cost_kg')
  55                 cost_meter = profile.getPreferenceFloat('filament_cost_meter')
  56                 if cost_kg > 0.0 and cost_meter > 0.0:
  57                         return "%.2f / %.2f" % (self.calculateWeight() * cost_kg, self.extrusionAmount / 1000 * cost_meter)
  58                 elif cost_kg > 0.0:
  59                         return "%.2f" % (self.calculateWeight() * cost_kg)
  60                 elif cost_meter > 0.0:
  61                         return "%.2f" % (self.extrusionAmount / 1000 * cost_meter)
  62                 return None
  63
  64         def _load(self, gcodeFile):
  65                 pos = [0.0, 0.0, 0.0]
  66                 posOffset = [0.0, 0.0, 0.0]
  67                 currentE = 0.0
  68                 totalExtrusion = 0.0
  69                 maxExtrusion = 0.0
  70                 currentExtruder = 0
  71                 extrudeAmountMultiply = 1.0
  72                 totalMoveTimeMinute = 0.0
  73                 absoluteE = True
  74                 scale = 1.0
  75                 posAbs = True
  76                 feedRate = 3600.0
  77                 layerThickness = 0.1
  78                 pathType = 'CUSTOM';
  79                 currentLayer = []
  80                 currentPath = gcodePath('move', pathType, layerThickness, pos[:])
  81                 currentPath['extruder'] = currentExtruder
  82
  83                 currentLayer.append(currentPath)
  84                 for line in gcodeFile:
  85                         if type(line) is tuple:
  86                                 line = line[0]
  87
  88                         #Parse Cura_SF comments
  89                         if line.startswith(';TYPE:'):
  90                                 pathType = line[6:].strip()
  91
  92                         if ';' in line:
  93                                 #Slic3r GCode comment parser
  94                                 comment = line[line.find(';')+1:].strip()
  95                                 if comment == 'fill':
  96                                         pathType = 'FILL'
  97                                 elif comment == 'perimeter':
  98                                         pathType = 'WALL-INNER'
  99                                 elif comment == 'skirt':
 100                                         pathType = 'SKIRT'
 101                                 if comment.startswith('LAYER:'):
 102                                         currentPath = gcodePath(moveType, pathType, layerThickness, currentPath['points'][-1])
 103                                         currentPath['extruder'] = currentExtruder
 104                                         for path in currentLayer:
 105                                                 path['points'] = numpy.array(path['points'], numpy.float32)
 106                                                 path['extrusion'] = numpy.array(path['extrusion'], numpy.float32)
 107                                         self.layerList.append(currentLayer)
 108                                         if self.progressCallback is not None:
 109                                                 if self.progressCallback(float(gcodeFile.tell()) / float(self._fileSize)):
 110                                                         #Abort the loading, we can safely return as the results here will be discarded
 111                                                         gcodeFile.close()
 112                                                         return
 113                                         currentLayer = [currentPath]
 114                                 line = line[0:line.find(';')]
 115                         T = getCodeInt(line, 'T')
 116                         if T is not None:
 117                                 if currentExtruder > 0:
 118                                         posOffset[0] -= profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 119                                         posOffset[1] -= profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 120                                 currentExtruder = T
 121                                 if currentExtruder > 0:
 122                                         posOffset[0] += profile.getPreferenceFloat('extruder_offset_x%d' % (currentExtruder))
 123                                         posOffset[1] += profile.getPreferenceFloat('extruder_offset_y%d' % (currentExtruder))
 124
 125                         G = getCodeInt(line, 'G')
 126                         if G is not None:
 127                                 if G == 0 or G == 1:    #Move
 128                                         x = getCodeFloat(line, 'X')
 129                                         y = getCodeFloat(line, 'Y')
 130                                         z = getCodeFloat(line, 'Z')
 131                                         e = getCodeFloat(line, 'E')
 132                                         #f = getCodeFloat(line, 'F')
 133                                         oldPos = pos[:]
 134                                         if posAbs:
 135                                                 if x is not None:
 136                                                         pos[0] = x * scale + posOffset[0]
 137                                                 if y is not None:
 138                                                         pos[1] = y * scale + posOffset[1]
 139                                                 if z is not None:
 140                                                         pos[2] = z * scale + posOffset[2]
 141                                         else:
 142                                                 if x is not None:
 143                                                         pos[0] += x * scale
 144                                                 if y is not None:
 145                                                         pos[1] += y * scale
 146                                                 if z is not None:
 147                                                         pos[2] += z * scale
 148                                         #if f is not None:
 149                                         #       feedRate = f
 150                                         #if x is not None or y is not None or z is not None:
 151                                         #       diffX = oldPos[0] - pos[0]
 152                                         #       diffY = oldPos[1] - pos[1]
 153                                         #       totalMoveTimeMinute += math.sqrt(diffX * diffX + diffY * diffY) / feedRate
 154                                         moveType = 'move'
 155                                         if e is not None:
 156                                                 if absoluteE:
 157                                                         e -= currentE
 158                                                 if e > 0.0:
 159                                                         moveType = 'extrude'
 160                                                 if e < 0.0:
 161                                                         moveType = 'retract'
 162                                                 totalExtrusion += e
 163                                                 currentE += e
 164                                                 if totalExtrusion > maxExtrusion:
 165                                                         maxExtrusion = totalExtrusion
 166                                         else:
 167                                                 e = 0.0
 168                                         if moveType == 'move' and oldPos[2] != pos[2]:
 169                                                 if oldPos[2] > pos[2] and abs(oldPos[2] - pos[2]) > 5.0 and pos[2] < 1.0:
 170                                                         oldPos[2] = 0.0
 171                                                 layerThickness = abs(oldPos[2] - pos[2])
 172                                         if currentPath['type'] != moveType or currentPath['pathType'] != pathType:
 173                                                 currentPath = gcodePath(moveType, pathType, layerThickness, currentPath['points'][-1])
 174                                                 currentPath['extruder'] = currentExtruder
 175                                                 currentLayer.append(currentPath)
 176
 177                                         currentPath['points'].append(pos[:])
 178                                         currentPath['extrusion'].append(e * extrudeAmountMultiply)
 179                                 elif G == 4:    #Delay
 180                                         S = getCodeFloat(line, 'S')
 181                                         if S is not None:
 182                                                 totalMoveTimeMinute += S / 60.0
 183                                         P = getCodeFloat(line, 'P')
 184                                         if P is not None:
 185                                                 totalMoveTimeMinute += P / 60.0 / 1000.0
 186                                 elif G == 20:   #Units are inches
 187                                         scale = 25.4
 188                                 elif G == 21:   #Units are mm
 189                                         scale = 1.0
 190                                 elif G == 28:   #Home
 191                                         x = getCodeFloat(line, 'X')
 192                                         y = getCodeFloat(line, 'Y')
 193                                         z = getCodeFloat(line, 'Z')
 194                                         if x is None and y is None and z is None:
 195                                                 pos = [0.0,0.0,0.0]
 196                                         else:
 197                                                 if x is not None:
 198                                                         pos[0] = 0.0
 199                                                 if y is not None:
 200                                                         pos[0] = 0.0
 201                                                 if z is not None:
 202                                                         pos[0] = 0.0
 203                                 elif G == 90:   #Absolute position
 204                                         posAbs = True
 205                                 elif G == 91:   #Relative position
 206                                         posAbs = False
 207                                 elif G == 92:
 208                                         x = getCodeFloat(line, 'X')
 209                                         y = getCodeFloat(line, 'Y')
 210                                         z = getCodeFloat(line, 'Z')
 211                                         e = getCodeFloat(line, 'E')
 212                                         if e is not None:
 213                                                 currentE = e
 214                                         if x is not None:
 215                                                 posOffset[0] = pos[0] - x
 216                                         if y is not None:
 217                                                 posOffset[1] = pos[1] - y
 218                                         if z is not None:
 219                                                 posOffset[2] = pos[2] - z
 220                                 else:
 221                                         print "Unknown G code:" + str(G)
 222                         else:
 223                                 M = getCodeInt(line, 'M')
 224                                 if M is not None:
 225                                         if M == 0:      #Message with possible wait (ignored)
 226                                                 pass
 227                                         elif M == 1:    #Message with possible wait (ignored)
 228                                                 pass
 229                                         elif M == 80:   #Enable power supply
 230                                                 pass
 231                                         elif M == 81:   #Suicide/disable power supply
 232                                                 pass
 233                                         elif M == 82:   #Absolute E
 234                                                 absoluteE = True
 235                                         elif M == 83:   #Relative E
 236                                                 absoluteE = False
 237                                         elif M == 84:   #Disable step drivers
 238                                                 pass
 239                                         elif M == 92:   #Set steps per unit
 240                                                 pass
 241                                         elif M == 101:  #Enable extruder
 242                                                 pass
 243                                         elif M == 103:  #Disable extruder
 244                                                 pass
 245                                         elif M == 104:  #Set temperature, no wait
 246                                                 pass
 247                                         elif M == 105:  #Get temperature
 248                                                 pass
 249                                         elif M == 106:  #Enable fan
 250                                                 pass
 251                                         elif M == 107:  #Disable fan
 252                                                 pass
 253                                         elif M == 108:  #Extruder RPM (these should not be in the final GCode, but they are)
 254                                                 pass
 255                                         elif M == 109:  #Set temperature, wait
 256                                                 pass
 257                                         elif M == 110:  #Reset N counter
 258                                                 pass
 259                                         elif M == 113:  #Extruder PWM (these should not be in the final GCode, but they are)
 260                                                 pass
 261                                         elif M == 117:  #LCD message
 262                                                 pass
 263                                         elif M == 140:  #Set bed temperature
 264                                                 pass
 265                                         elif M == 190:  #Set bed temperature & wait
 266                                                 pass
 267                                         elif M == 221:  #Extrude amount multiplier
 268                                                 s = getCodeFloat(line, 'S')
 269                                                 if s is not None:
 270                                                         extrudeAmountMultiply = s / 100.0
 271                                         else:
 272                                                 print "Unknown M code:" + str(M)
 273                 for path in currentLayer:
 274                         path['points'] = numpy.array(path['points'], numpy.float32)
 275                         path['extrusion'] = numpy.array(path['extrusion'], numpy.float32)
 276                 self.layerList.append(currentLayer)
 277                 if self.progressCallback is not None and self._fileSize > 0:
 278                         self.progressCallback(float(gcodeFile.tell()) / float(self._fileSize))
 279                 self.extrusionAmount = maxExtrusion
 280                 self.totalMoveTimeMinute = totalMoveTimeMinute
 281                 #print "Extruded a total of: %d mm of filament" % (self.extrusionAmount)
 282                 #print "Estimated print duration: %.2f minutes" % (self.totalMoveTimeMinute)
 283
 284 def getCodeInt(line, code):
 285         n = line.find(code) + 1
 286         if n < 1:
 287                 return None
 288         m = line.find(' ', n)
 289         try:
 290                 if m < 0:
 291                         return int(line[n:])
 292                 return int(line[n:m])
 293         except:
 294                 return None
 295
 296 def getCodeFloat(line, code):
 297         n = line.find(code) + 1
 298         if n < 1:
 299                 return None
 300         m = line.find(' ', n)
 301         try:
 302                 if m < 0:
 303                         return float(line[n:])
 304                 return float(line[n:m])
 305         except:
 306                 return None
 307
 308 if __name__ == '__main__':
 309         t = time.time()
 310         for filename in sys.argv[1:]:
 311                 g = gcode()
 312                 g.load(filename)
 313                 print g.totalMoveTimeMinute
 314         print time.time() - t
 315