Cura/util/sliceEngine.py

   1 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
   2 import subprocess
   3 import time
   4 import math
   5 import numpy
   6 import os
   7 import warnings
   8 import threading
   9 import traceback
  10 import platform
  11 import sys
  12
  13 from Cura.util import profile
  14
  15 def getEngineFilename():
  16         if platform.system() == 'Windows':
  17                 if os.path.exists('C:/Software/Cura_SteamEngine/_bin/Release/Cura_SteamEngine.exe'):
  18                         return 'C:/Software/Cura_SteamEngine/_bin/Release/Cura_SteamEngine.exe'
  19                 return os.path.abspath(os.path.join(os.path.dirname(__file__), '../..', 'CuraEngine.exe'))
  20         if hasattr(sys, 'frozen'):
  21                 return os.path.abspath(os.path.join(os.path.dirname(__file__), '../../../../..', 'CuraEngine'))
  22         return os.path.abspath(os.path.join(os.path.dirname(__file__), '../..', 'CuraEngine'))
  23
  24 def getTempFilename():
  25         warnings.simplefilter('ignore')
  26         ret = os.tempnam(None, "Cura_Tmp")
  27         warnings.simplefilter('default')
  28         return ret
  29
  30 class Slicer(object):
  31         def __init__(self, progressCallback):
  32                 self._process = None
  33                 self._thread = None
  34                 self._callback = progressCallback
  35                 self._binaryStorageFilename = getTempFilename()
  36                 self._exportFilename = getTempFilename()
  37                 self._progressSteps = ['inset', 'skin', 'export']
  38                 self._objCount = 0
  39                 self._sliceLog = []
  40                 self._printTimeSeconds = None
  41                 self._filamentMM = None
  42
  43         def cleanup(self):
  44                 self.abortSlicer()
  45                 try:
  46                         os.remove(self._binaryStorageFilename)
  47                 except:
  48                         pass
  49                 try:
  50                         os.remove(self._exportFilename)
  51                 except:
  52                         pass
  53
  54         def abortSlicer(self):
  55                 if self._process is not None:
  56                         try:
  57                                 self._process.terminate()
  58                         except:
  59                                 pass
  60                         self._thread.join()
  61
  62         def getGCodeFilename(self):
  63                 return self._exportFilename
  64
  65         def getSliceLog(self):
  66                 return self._sliceLog
  67
  68         def getFilamentWeight(self):
  69                 #Calculates the weight of the filament in kg
  70                 radius = float(profile.getProfileSetting('filament_diameter')) / 2
  71                 volumeM3 = (self._filamentMM * (math.pi * radius * radius)) / (1000*1000*1000)
  72                 return volumeM3 * profile.getPreferenceFloat('filament_physical_density')
  73
  74         def getFilamentCost(self):
  75                 cost_kg = profile.getPreferenceFloat('filament_cost_kg')
  76                 cost_meter = profile.getPreferenceFloat('filament_cost_meter')
  77                 if cost_kg > 0.0 and cost_meter > 0.0:
  78                         return "%.2f / %.2f" % (self.getFilamentWeight() * cost_kg, self._filamentMM / 1000.0 * cost_meter)
  79                 elif cost_kg > 0.0:
  80                         return "%.2f" % (self.getFilamentWeight() * cost_kg)
  81                 elif cost_meter > 0.0:
  82                         return "%.2f" % (self._filamentMM / 1000.0 * cost_meter)
  83                 return None
  84
  85         def getPrintTime(self):
  86                 if int(self._printTimeSeconds / 60 / 60) < 1:
  87                         return '%d minutes' % (int(self._printTimeSeconds / 60) % 60)
  88                 if int(self._printTimeSeconds / 60 / 60) == 1:
  89                         return '%d hour %d minutes' % (int(self._printTimeSeconds / 60 / 60), int(self._printTimeSeconds / 60) % 60)
  90                 return '%d hours %d minutes' % (int(self._printTimeSeconds / 60 / 60), int(self._printTimeSeconds / 60) % 60)
  91
  92         def getFilamentAmount(self):
  93                 return '%0.2f meter %0.0f gram' % (float(self._filamentMM) / 1000.0, self.getFilamentWeight() * 1000.0)
  94
  95         def runSlicer(self, scene):
  96                 self.abortSlicer()
  97                 self._callback(-1.0, False)
  98
  99                 extruderCount = 1
 100                 for obj in scene.objects():
 101                         if scene.checkPlatform(obj):
 102                                 extruderCount = max(extruderCount, len(obj._meshList))
 103
 104                 commandList = [getEngineFilename(), '-vv']
 105                 for k, v in self._engineSettings(extruderCount).iteritems():
 106                         commandList += ['-s', '%s=%s' % (k, str(v))]
 107                 commandList += ['-o', self._exportFilename]
 108                 commandList += ['-b', self._binaryStorageFilename]
 109                 self._objCount = 0
 110                 with open(self._binaryStorageFilename, "wb") as f:
 111                         order = scene.printOrder()
 112                         if order is None:
 113                                 pos = numpy.array(profile.getMachineCenterCoords()) * 1000
 114                                 commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
 115
 116                                 vertexTotal = 0
 117                                 for obj in scene.objects():
 118                                         if scene.checkPlatform(obj):
 119                                                 for mesh in obj._meshList:
 120                                                         vertexTotal += mesh.vertexCount
 121
 122                                 f.write(numpy.array([vertexTotal], numpy.int32).tostring())
 123                                 for obj in scene.objects():
 124                                         if scene.checkPlatform(obj):
 125                                                 for mesh in obj._meshList:
 126                                                         vertexes = (numpy.matrix(mesh.vertexes, copy = False) * numpy.matrix(obj._matrix, numpy.float32)).getA()
 127                                                         vertexes -= obj._drawOffset
 128                                                         vertexes += numpy.array([obj.getPosition()[0], obj.getPosition()[1], 0.0])
 129                                                         f.write(vertexes.tostring())
 130
 131                                 commandList += ['#']
 132                                 self._objCount = 1
 133                         else:
 134                                 for n in order:
 135                                         obj = scene.objects()[n]
 136                                         for mesh in obj._meshList:
 137                                                 f.write(numpy.array([mesh.vertexCount], numpy.int32).tostring())
 138                                                 f.write(mesh.vertexes.tostring())
 139                                         pos = obj.getPosition() * 1000
 140                                         pos += numpy.array(profile.getMachineCenterCoords()) * 1000
 141                                         commandList += ['-m', ','.join(map(str, obj._matrix.getA().flatten()))]
 142                                         commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
 143                                         commandList += ['#' * len(obj._meshList)]
 144                                         self._objCount += 1
 145                 if self._objCount > 0:
 146                         try:
 147                                 self._process = self._runSliceProcess(commandList)
 148                                 self._thread = threading.Thread(target=self._watchProcess)
 149                                 self._thread.daemon = True
 150                                 self._thread.start()
 151                         except OSError:
 152                                 traceback.print_exc()
 153
 154         def _watchProcess(self):
 155                 self._callback(0.0, False)
 156                 self._sliceLog = []
 157                 self._printTimeSeconds = None
 158                 self._filamentMM = None
 159
 160                 line = self._process.stdout.readline()
 161                 objectNr = 0
 162                 while len(line):
 163                         line = line.strip()
 164                         if line.startswith('Progress:'):
 165                                 line = line.split(':')
 166                                 if line[1] == 'process':
 167                                         objectNr += 1
 168                                 elif line[1] in self._progressSteps:
 169                                         progressValue = float(line[2]) / float(line[3])
 170                                         progressValue /= len(self._progressSteps)
 171                                         progressValue += 1.0 / len(self._progressSteps) * self._progressSteps.index(line[1])
 172
 173                                         progressValue /= self._objCount
 174                                         progressValue += 1.0 / self._objCount * objectNr
 175                                         try:
 176                                                 self._callback(progressValue, False)
 177                                         except:
 178                                                 pass
 179                         elif line.startswith('Print time:'):
 180                                 self._printTimeSeconds = int(line.split(':')[1].strip())
 181                         elif line.startswith('Filament:'):
 182                                 self._filamentMM = int(line.split(':')[1].strip())
 183                         else:
 184                                 self._sliceLog.append(line.strip())
 185                         line = self._process.stdout.readline()
 186                 for line in self._process.stderr:
 187                         self._sliceLog.append(line.strip())
 188                 returnCode = self._process.wait()
 189                 try:
 190                         if returnCode == 0:
 191                                 profile.runPostProcessingPlugins(self._exportFilename)
 192                                 self._callback(1.0, True)
 193                         else:
 194                                 for line in self._sliceLog:
 195                                         print line
 196                                 self._callback(-1.0, False)
 197                 except:
 198                         pass
 199                 self._process = None
 200
 201         def _engineSettings(self, extruderCount):
 202                 settings = {
 203                         'layerThickness': int(profile.getProfileSettingFloat('layer_height') * 1000),
 204                         'initialLayerThickness': int(profile.getProfileSettingFloat('bottom_thickness') * 1000) if profile.getProfileSettingFloat('bottom_thickness') > 0.0 else int(profile.getProfileSettingFloat('layer_height') * 1000),
 205                         'filamentDiameter': int(profile.getProfileSettingFloat('filament_diameter') * 1000),
 206                         'filamentFlow': int(profile.getProfileSettingFloat('filament_flow')),
 207                         'extrusionWidth': int(profile.calculateEdgeWidth() * 1000),
 208                         'insetCount': int(profile.calculateLineCount()),
 209                         'downSkinCount': int(profile.calculateSolidLayerCount()) if profile.getProfileSetting('solid_bottom') == 'True' else 0,
 210                         'upSkinCount': int(profile.calculateSolidLayerCount()) if profile.getProfileSetting('solid_top') == 'True' else 0,
 211                         'sparseInfillLineDistance': int(100 * profile.calculateEdgeWidth() * 1000 / profile.getProfileSettingFloat('fill_density')) if profile.getProfileSettingFloat('fill_density') > 0 else -1,
 212                         'infillOverlap': int(profile.getProfileSettingFloat('fill_overlap')),
 213                         'initialSpeedupLayers': int(4),
 214                         'initialLayerSpeed': int(profile.getProfileSettingFloat('bottom_layer_speed')),
 215                         'printSpeed': int(profile.getProfileSettingFloat('print_speed')),
 216                         'infillSpeed': int(profile.getProfileSettingFloat('infill_speed')) if int(profile.getProfileSettingFloat('infill_speed')) > 0 else int(profile.getProfileSettingFloat('print_speed')),
 217                         'moveSpeed': int(profile.getProfileSettingFloat('travel_speed')),
 218                         'fanOnLayerNr': int(profile.getProfileSettingFloat('fan_layer')),
 219                         'fanSpeedMin': int(profile.getProfileSettingFloat('fan_speed')) if profile.getProfileSetting('fan_enabled') == 'True' else 0,
 220                         'fanSpeedMax': int(profile.getProfileSettingFloat('fan_speed_max')) if profile.getProfileSetting('fan_enabled') == 'True' else 0,
 221                         'supportAngle': int(-1) if profile.getProfileSetting('support') == 'None' else int(60),
 222                         'supportEverywhere': int(1) if profile.getProfileSetting('support') == 'Everywhere' else int(0),
 223                         'supportLineWidth': int(profile.getProfileSettingFloat('support_rate') * profile.calculateEdgeWidth() * 1000 / 100),
 224                         'retractionAmount': int(profile.getProfileSettingFloat('retraction_amount') * 1000) if profile.getProfileSetting('retraction_enable') == 'True' else 0,
 225                         'retractionSpeed': int(profile.getProfileSettingFloat('retraction_speed')),
 226                         'retractionAmountExtruderSwitch': int(profile.getProfileSettingFloat('retraction_dual_amount') * 1000),
 227                         'objectSink': int(profile.getProfileSettingFloat('object_sink') * 1000),
 228                         'minimalLayerTime': int(profile.getProfileSettingFloat('cool_min_layer_time')),
 229                         'minimalFeedrate': int(profile.getProfileSettingFloat('cool_min_feedrate')),
 230                         'coolHeadLift': 1 if profile.getProfileSetting('cool_head_lift') == 'True' else 0,
 231                         'startCode': profile.getAlterationFileContents('start.gcode', extruderCount),
 232                         'endCode': profile.getAlterationFileContents('end.gcode', extruderCount),
 233
 234                         'extruderOffset[1].X': int(profile.getPreferenceFloat('extruder_offset_x1') * 1000),
 235                         'extruderOffset[1].Y': int(profile.getPreferenceFloat('extruder_offset_y1') * 1000),
 236                         'extruderOffset[2].X': int(profile.getPreferenceFloat('extruder_offset_x2') * 1000),
 237                         'extruderOffset[2].Y': int(profile.getPreferenceFloat('extruder_offset_y2') * 1000),
 238                         'extruderOffset[3].X': int(profile.getPreferenceFloat('extruder_offset_x3') * 1000),
 239                         'extruderOffset[3].Y': int(profile.getPreferenceFloat('extruder_offset_y3') * 1000),
 240                         'fixHorrible': 0,
 241                 }
 242                 if profile.getProfileSetting('platform_adhesion') == 'Brim':
 243                         settings['skirtDistance'] = 0
 244                         settings['skirtLineCount'] = int(profile.getProfileSettingFloat('brim_line_count'))
 245                 elif profile.getProfileSetting('platform_adhesion') == 'Raft':
 246                         settings['skirtDistance'] = 0
 247                         settings['skirtLineCount'] = 0
 248                         settings['raftMargin'] = int(profile.getProfileSettingFloat('raft_margin') * 1000)
 249                         settings['raftBaseThickness'] = int(profile.getProfileSettingFloat('raft_base_thickness') * 1000)
 250                         settings['raftBaseLinewidth'] = int(profile.getProfileSettingFloat('raft_base_linewidth') * 1000)
 251                         settings['raftInterfaceThickness'] = int(profile.getProfileSettingFloat('raft_interface_thickness') * 1000)
 252                         settings['raftInterfaceLinewidth'] = int(profile.getProfileSettingFloat('raft_interface_linewidth') * 1000)
 253                 else:
 254                         settings['skirtDistance'] = int(profile.getProfileSettingFloat('skirt_gap') * 1000)
 255                         settings['skirtLineCount'] = int(profile.getProfileSettingFloat('skirt_line_count'))
 256
 257                 if profile.getProfileSetting('fix_horrible_union_all_type_a') == 'True':
 258                         settings['fixHorrible'] |= 0x01
 259                 if profile.getProfileSetting('fix_horrible_union_all_type_b') == 'True':
 260                         settings['fixHorrible'] |= 0x02
 261                 if profile.getProfileSetting('fix_horrible_use_open_bits') == 'True':
 262                         settings['fixHorrible'] |= 0x10
 263                 if profile.getProfileSetting('fix_horrible_extensive_stitching') == 'True':
 264                         settings['fixHorrible'] |= 0x04
 265
 266                 if settings['layerThickness'] <= 0:
 267                         settings['layerThickness'] = 1000
 268                 return settings
 269
 270         def _runSliceProcess(self, cmdList):
 271                 kwargs = {}
 272                 if subprocess.mswindows:
 273                         su = subprocess.STARTUPINFO()
 274                         su.dwFlags |= subprocess.STARTF_USESHOWWINDOW
 275                         su.wShowWindow = subprocess.SW_HIDE
 276                         kwargs['startupinfo'] = su
 277                         kwargs['creationflags'] = 0x00004000 #BELOW_NORMAL_PRIORITY_CLASS
 278                 return subprocess.Popen(cmdList, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs)