Cura/util/sliceEngine.py

   1 import subprocess
   2 import time
   3 import math
   4 import numpy
   5 import os
   6 import warnings
   7 import threading
   8 import traceback
   9 import platform
  10 import sys
  11
  12 from Cura.util import profile
  13
  14 def getEngineFilename():
  15         if platform.system() == 'Windows':
  16                 if os.path.exists('C:/Software/Cura_SteamEngine/_bin/Release/Cura_SteamEngine.exe'):
  17                         return 'C:/Software/Cura_SteamEngine/_bin/Release/Cura_SteamEngine.exe'
  18                 return os.path.abspath(os.path.join(os.path.dirname(__file__), '../..', 'CuraEngine.exe'))
  19         if hasattr(sys, 'frozen'):
  20                 return os.path.abspath(os.path.join(os.path.dirname(__file__), '../../../../..', 'CuraEngine'))
  21         return os.path.abspath(os.path.join(os.path.dirname(__file__), '../..', 'CuraEngine'))
  22
  23 def getTempFilename():
  24         warnings.simplefilter('ignore')
  25         ret = os.tempnam(None, "Cura_Tmp")
  26         warnings.simplefilter('default')
  27         return ret
  28
  29 class Slicer(object):
  30         def __init__(self, progressCallback):
  31                 self._process = None
  32                 self._thread = None
  33                 self._callback = progressCallback
  34                 self._binaryStorageFilename = getTempFilename()
  35                 self._exportFilename = getTempFilename()
  36                 self._progressSteps = ['inset', 'skin', 'export']
  37                 self._objCount = 0
  38                 self._sliceLog = []
  39                 self._printTimeSeconds = None
  40                 self._filamentMM = None
  41
  42         def cleanup(self):
  43                 self.abortSlicer()
  44                 try:
  45                         os.remove(self._binaryStorageFilename)
  46                 except:
  47                         pass
  48                 try:
  49                         os.remove(self._exportFilename)
  50                 except:
  51                         pass
  52
  53         def abortSlicer(self):
  54                 if self._process is not None:
  55                         try:
  56                                 self._process.terminate()
  57                         except:
  58                                 pass
  59                         self._thread.join()
  60
  61         def getGCodeFilename(self):
  62                 return self._exportFilename
  63
  64         def getSliceLog(self):
  65                 return self._sliceLog
  66
  67         def getFilamentWeight(self):
  68                 #Calculates the weight of the filament in kg
  69                 radius = float(profile.getProfileSetting('filament_diameter')) / 2
  70                 volumeM3 = (self._filamentMM * (math.pi * radius * radius)) / (1000*1000*1000)
  71                 return volumeM3 * profile.getPreferenceFloat('filament_physical_density')
  72
  73         def getFilamentCost(self):
  74                 cost_kg = profile.getPreferenceFloat('filament_cost_kg')
  75                 cost_meter = profile.getPreferenceFloat('filament_cost_meter')
  76                 if cost_kg > 0.0 and cost_meter > 0.0:
  77                         return "%.2f / %.2f" % (self.getFilamentWeight() * cost_kg, self._filamentMM / 1000.0 * cost_meter)
  78                 elif cost_kg > 0.0:
  79                         return "%.2f" % (self.getFilamentWeight() * cost_kg)
  80                 elif cost_meter > 0.0:
  81                         return "%.2f" % (self._filamentMM / 1000.0 * cost_meter)
  82                 return None
  83
  84         def getPrintTime(self):
  85                 if int(self._printTimeSeconds / 60 / 60) < 1:
  86                         return '%d minutes' % (int(self._printTimeSeconds / 60) % 60)
  87                 if int(self._printTimeSeconds / 60 / 60) == 1:
  88                         return '%d hour %d minutes' % (int(self._printTimeSeconds / 60 / 60), int(self._printTimeSeconds / 60) % 60)
  89                 return '%d hours %d minutes' % (int(self._printTimeSeconds / 60 / 60), int(self._printTimeSeconds / 60) % 60)
  90
  91         def getFilamentAmount(self):
  92                 return '%0.2f meter %0.0f gram' % (float(self._filamentMM) / 1000.0, self.getFilamentWeight() * 1000.0)
  93
  94         def runSlicer(self, scene):
  95                 self.abortSlicer()
  96                 self._callback(-1.0, False)
  97
  98                 commandList = [getEngineFilename(), '-vv']
  99                 for k, v in self._engineSettings().iteritems():
 100                         commandList += ['-s', '%s=%s' % (k, str(v))]
 101                 commandList += ['-o', self._exportFilename]
 102                 commandList += ['-b', self._binaryStorageFilename]
 103                 self._objCount = 0
 104                 with open(self._binaryStorageFilename, "wb") as f:
 105                         order = scene.printOrder()
 106                         if order is None:
 107                                 pos = numpy.array([profile.getPreferenceFloat('machine_width') * 1000 / 2, profile.getPreferenceFloat('machine_depth') * 1000 / 2])
 108                                 commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
 109
 110                                 vertexTotal = 0
 111                                 for obj in scene.objects():
 112                                         if scene.checkPlatform(obj):
 113                                                 for mesh in obj._meshList:
 114                                                         vertexTotal += mesh.vertexCount
 115
 116                                 f.write(numpy.array([vertexTotal], numpy.int32).tostring())
 117                                 for obj in scene.objects():
 118                                         if scene.checkPlatform(obj):
 119                                                 for mesh in obj._meshList:
 120                                                         vertexes = (numpy.matrix(mesh.vertexes, copy = False) * numpy.matrix(obj._matrix, numpy.float32)).getA()
 121                                                         vertexes -= obj._drawOffset
 122                                                         vertexes += numpy.array([obj.getPosition()[0], obj.getPosition()[1], 0.0])
 123                                                         f.write(vertexes.tostring())
 124
 125                                 commandList += ['#']
 126                                 self._objCount = 1
 127                         else:
 128                                 for n in order:
 129                                         obj = scene.objects()[n]
 130                                         for mesh in obj._meshList:
 131                                                 f.write(numpy.array([mesh.vertexCount], numpy.int32).tostring())
 132                                                 f.write(mesh.vertexes.tostring())
 133                                         pos = obj.getPosition() * 1000
 134                                         pos += numpy.array([profile.getPreferenceFloat('machine_width') * 1000 / 2, profile.getPreferenceFloat('machine_depth') * 1000 / 2])
 135                                         commandList += ['-m', ','.join(map(str, obj._matrix.getA().flatten()))]
 136                                         commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
 137                                         commandList += ['#' * len(obj._meshList)]
 138                                         self._objCount += 1
 139                 if self._objCount > 0:
 140                         try:
 141                                 self._process = self._runSliceProcess(commandList)
 142                                 self._thread = threading.Thread(target=self._watchProcess)
 143                                 self._thread.daemon = True
 144                                 self._thread.start()
 145                         except OSError:
 146                                 traceback.print_exc()
 147
 148         def _watchProcess(self):
 149                 self._callback(0.0, False)
 150                 self._sliceLog = []
 151                 self._printTimeSeconds = None
 152                 self._filamentMM = None
 153
 154                 line = self._process.stdout.readline()
 155                 objectNr = 0
 156                 while len(line):
 157                         line = line.strip()
 158                         if line.startswith('Progress:'):
 159                                 line = line.split(':')
 160                                 if line[1] == 'process':
 161                                         objectNr += 1
 162                                 elif line[1] in self._progressSteps:
 163                                         progressValue = float(line[2]) / float(line[3])
 164                                         progressValue /= len(self._progressSteps)
 165                                         progressValue += 1.0 / len(self._progressSteps) * self._progressSteps.index(line[1])
 166
 167                                         progressValue /= self._objCount
 168                                         progressValue += 1.0 / self._objCount * objectNr
 169                                         try:
 170                                                 self._callback(progressValue, False)
 171                                         except:
 172                                                 pass
 173                         elif line.startswith('Print time:'):
 174                                 self._printTimeSeconds = int(line.split(':')[1].strip())
 175                         elif line.startswith('Filament:'):
 176                                 self._filamentMM = int(line.split(':')[1].strip())
 177                         else:
 178                                 self._sliceLog.append(line.strip())
 179                         line = self._process.stdout.readline()
 180                 for line in self._process.stderr:
 181                         self._sliceLog.append(line.strip())
 182                 returnCode = self._process.wait()
 183                 try:
 184                         if returnCode == 0:
 185                                 profile.runPostProcessingPlugins(self._exportFilename)
 186                                 self._callback(1.0, True)
 187                         else:
 188                                 self._callback(-1.0, False)
 189                 except:
 190                         pass
 191                 self._process = None
 192
 193         def _engineSettings(self):
 194                 settings = {
 195                         'layerThickness': int(profile.getProfileSettingFloat('layer_height') * 1000),
 196                         'initialLayerThickness': int(profile.getProfileSettingFloat('bottom_thickness') * 1000) if profile.getProfileSettingFloat('bottom_thickness') > 0.0 else int(profile.getProfileSettingFloat('layer_height') * 1000),
 197                         'filamentDiameter': int(profile.getProfileSettingFloat('filament_diameter') * 1000),
 198                         'filamentFlow': int(profile.getProfileSettingFloat('filament_flow')),
 199                         'extrusionWidth': int(profile.calculateEdgeWidth() * 1000),
 200                         'insetCount': int(profile.calculateLineCount()),
 201                         'downSkinCount': int(profile.calculateSolidLayerCount()) if profile.getProfileSetting('solid_bottom') == 'True' else 0,
 202                         'upSkinCount': int(profile.calculateSolidLayerCount()) if profile.getProfileSetting('solid_top') == 'True' else 0,
 203                         'sparseInfillLineDistance': int(100 * profile.calculateEdgeWidth() * 1000 / profile.getProfileSettingFloat('fill_density')) if profile.getProfileSettingFloat('fill_density') > 0 else -1,
 204                         'infillOverlap': int(profile.getProfileSettingFloat('fill_overlap')),
 205                         'initialSpeedupLayers': int(4),
 206                         'initialLayerSpeed': int(profile.getProfileSettingFloat('bottom_layer_speed')),
 207                         'printSpeed': int(profile.getProfileSettingFloat('print_speed')),
 208                         'infillSpeed': int(profile.getProfileSettingFloat('infill_speed')) if int(profile.getProfileSettingFloat('infill_speed')) > 0 else int(profile.getProfileSettingFloat('print_speed')),
 209                         'moveSpeed': int(profile.getProfileSettingFloat('travel_speed')),
 210                         'fanOnLayerNr': int(profile.getProfileSettingFloat('fan_layer')),
 211                         'fanSpeedMin': int(profile.getProfileSettingFloat('fan_speed')) if profile.getProfileSetting('fan_enabled') == 'True' else 0,
 212                         'fanSpeedMax': int(profile.getProfileSettingFloat('fan_speed_max')) if profile.getProfileSetting('fan_enabled') == 'True' else 0,
 213                         'supportAngle': int(-1) if profile.getProfileSetting('support') == 'None' else int(60),
 214                         'supportEverywhere': int(1) if profile.getProfileSetting('support') == 'Everywhere' else int(0),
 215                         'supportLineWidth': int(profile.getProfileSettingFloat('support_rate') * profile.calculateEdgeWidth() * 1000 / 100),
 216                         'retractionAmount': int(profile.getProfileSettingFloat('retraction_amount') * 1000),
 217                         'retractionSpeed': int(profile.getProfileSettingFloat('retraction_speed')),
 218                         'objectSink': int(profile.getProfileSettingFloat('object_sink') * 1000),
 219                         'minimalLayerTime': int(profile.getProfileSettingFloat('cool_min_layer_time')),
 220                         'minimalFeedrate': int(profile.getProfileSettingFloat('cool_min_feedrate')),
 221                         'coolHeadLift': 1 if profile.getProfileSetting('cool_head_lift') == 'True' else 0,
 222                         'startCode': profile.getAlterationFileContents('start.gcode'),
 223                         'endCode': profile.getAlterationFileContents('end.gcode'),
 224
 225                         'extruderOffset[1].X': int(profile.getPreferenceFloat('extruder_offset_x1') * 1000),
 226                         'extruderOffset[1].Y': int(profile.getPreferenceFloat('extruder_offset_y1') * 1000),
 227                         'extruderOffset[2].X': int(profile.getPreferenceFloat('extruder_offset_x2') * 1000),
 228                         'extruderOffset[2].Y': int(profile.getPreferenceFloat('extruder_offset_y2') * 1000),
 229                         'extruderOffset[3].X': int(profile.getPreferenceFloat('extruder_offset_x3') * 1000),
 230                         'extruderOffset[3].Y': int(profile.getPreferenceFloat('extruder_offset_y3') * 1000),
 231                 }
 232                 if profile.getProfileSetting('platform_adhesion') == 'Brim':
 233                         settings['skirtDistance'] = 0
 234                         settings['skirtLineCount'] = int(profile.getProfileSettingFloat('brim_line_count'))
 235                 elif profile.getProfileSetting('platform_adhesion') == 'Raft':
 236                         settings['skirtDistance'] = 0
 237                         settings['skirtLineCount'] = 0
 238                         settings['raftMargin'] = int(profile.getProfileSettingFloat('raft_margin') * 1000);
 239                         settings['raftBaseThickness'] = int(profile.getProfileSettingFloat('raft_base_thickness') * 1000);
 240                         settings['raftBaseLinewidth'] = int(profile.getProfileSettingFloat('raft_base_linewidth') * 1000);
 241                         settings['raftInterfaceThickness'] = int(profile.getProfileSettingFloat('raft_interface_thickness') * 1000);
 242                         settings['raftInterfaceLinewidth'] = int(profile.getProfileSettingFloat('raft_interface_linewidth') * 1000);
 243                 else:
 244                         settings['skirtDistance'] = int(profile.getProfileSettingFloat('skirt_gap') * 1000)
 245                         settings['skirtLineCount'] = int(profile.getProfileSettingFloat('skirt_line_count'))
 246                 if settings['layerThickness'] <= 0:
 247                         settings['layerThickness'] = 1000
 248                 return settings
 249
 250         def _runSliceProcess(self, cmdList):
 251                 kwargs = {}
 252                 if subprocess.mswindows:
 253                         su = subprocess.STARTUPINFO()
 254                         su.dwFlags |= subprocess.STARTF_USESHOWWINDOW
 255                         su.wShowWindow = subprocess.SW_HIDE
 256                         kwargs['startupinfo'] = su
 257                         kwargs['creationflags'] = 0x00004000 #BELOW_NORMAL_PRIORITY_CLASS
 258                 return subprocess.Popen(cmdList, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs)