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                 commandList = [getEngineFilename(), '-vv']
 100                 for k, v in self._engineSettings().iteritems():
 101                         commandList += ['-s', '%s=%s' % (k, str(v))]
 102                 commandList += ['-o', self._exportFilename]
 103                 commandList += ['-b', self._binaryStorageFilename]
 104                 self._objCount = 0
 105                 with open(self._binaryStorageFilename, "wb") as f:
 106                         order = scene.printOrder()
 107                         if order is None:
 108                                 pos = numpy.array([profile.getPreferenceFloat('machine_width') * 1000 / 2, profile.getPreferenceFloat('machine_depth') * 1000 / 2])
 109                                 commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
 110
 111                                 vertexTotal = 0
 112                                 for obj in scene.objects():
 113                                         if scene.checkPlatform(obj):
 114                                                 for mesh in obj._meshList:
 115                                                         vertexTotal += mesh.vertexCount
 116
 117                                 f.write(numpy.array([vertexTotal], numpy.int32).tostring())
 118                                 for obj in scene.objects():
 119                                         if scene.checkPlatform(obj):
 120                                                 for mesh in obj._meshList:
 121                                                         vertexes = (numpy.matrix(mesh.vertexes, copy = False) * numpy.matrix(obj._matrix, numpy.float32)).getA()
 122                                                         vertexes -= obj._drawOffset
 123                                                         vertexes += numpy.array([obj.getPosition()[0], obj.getPosition()[1], 0.0])
 124                                                         f.write(vertexes.tostring())
 125
 126                                 commandList += ['#']
 127                                 self._objCount = 1
 128                         else:
 129                                 for n in order:
 130                                         obj = scene.objects()[n]
 131                                         for mesh in obj._meshList:
 132                                                 f.write(numpy.array([mesh.vertexCount], numpy.int32).tostring())
 133                                                 f.write(mesh.vertexes.tostring())
 134                                         pos = obj.getPosition() * 1000
 135                                         pos += numpy.array([profile.getPreferenceFloat('machine_width') * 1000 / 2, profile.getPreferenceFloat('machine_depth') * 1000 / 2])
 136                                         commandList += ['-m', ','.join(map(str, obj._matrix.getA().flatten()))]
 137                                         commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
 138                                         commandList += ['#' * len(obj._meshList)]
 139                                         self._objCount += 1
 140                 if self._objCount > 0:
 141                         try:
 142                                 self._process = self._runSliceProcess(commandList)
 143                                 self._thread = threading.Thread(target=self._watchProcess)
 144                                 self._thread.daemon = True
 145                                 self._thread.start()
 146                         except OSError:
 147                                 traceback.print_exc()
 148
 149         def _watchProcess(self):
 150                 self._callback(0.0, False)
 151                 self._sliceLog = []
 152                 self._printTimeSeconds = None
 153                 self._filamentMM = None
 154
 155                 line = self._process.stdout.readline()
 156                 objectNr = 0
 157                 while len(line):
 158                         line = line.strip()
 159                         if line.startswith('Progress:'):
 160                                 line = line.split(':')
 161                                 if line[1] == 'process':
 162                                         objectNr += 1
 163                                 elif line[1] in self._progressSteps:
 164                                         progressValue = float(line[2]) / float(line[3])
 165                                         progressValue /= len(self._progressSteps)
 166                                         progressValue += 1.0 / len(self._progressSteps) * self._progressSteps.index(line[1])
 167
 168                                         progressValue /= self._objCount
 169                                         progressValue += 1.0 / self._objCount * objectNr
 170                                         try:
 171                                                 self._callback(progressValue, False)
 172                                         except:
 173                                                 pass
 174                         elif line.startswith('Print time:'):
 175                                 self._printTimeSeconds = int(line.split(':')[1].strip())
 176                         elif line.startswith('Filament:'):
 177                                 self._filamentMM = int(line.split(':')[1].strip())
 178                         else:
 179                                 self._sliceLog.append(line.strip())
 180                         line = self._process.stdout.readline()
 181                 for line in self._process.stderr:
 182                         self._sliceLog.append(line.strip())
 183                 returnCode = self._process.wait()
 184                 try:
 185                         if returnCode == 0:
 186                                 profile.runPostProcessingPlugins(self._exportFilename)
 187                                 self._callback(1.0, True)
 188                         else:
 189                                 self._callback(-1.0, False)
 190                 except:
 191                         pass
 192                 self._process = None
 193
 194         def _engineSettings(self):
 195                 settings = {
 196                         'layerThickness': int(profile.getProfileSettingFloat('layer_height') * 1000),
 197                         'initialLayerThickness': int(profile.getProfileSettingFloat('bottom_thickness') * 1000) if profile.getProfileSettingFloat('bottom_thickness') > 0.0 else int(profile.getProfileSettingFloat('layer_height') * 1000),
 198                         'filamentDiameter': int(profile.getProfileSettingFloat('filament_diameter') * 1000),
 199                         'filamentFlow': int(profile.getProfileSettingFloat('filament_flow')),
 200                         'extrusionWidth': int(profile.calculateEdgeWidth() * 1000),
 201                         'insetCount': int(profile.calculateLineCount()),
 202                         'downSkinCount': int(profile.calculateSolidLayerCount()) if profile.getProfileSetting('solid_bottom') == 'True' else 0,
 203                         'upSkinCount': int(profile.calculateSolidLayerCount()) if profile.getProfileSetting('solid_top') == 'True' else 0,
 204                         'sparseInfillLineDistance': int(100 * profile.calculateEdgeWidth() * 1000 / profile.getProfileSettingFloat('fill_density')) if profile.getProfileSettingFloat('fill_density') > 0 else -1,
 205                         'infillOverlap': int(profile.getProfileSettingFloat('fill_overlap')),
 206                         'initialSpeedupLayers': int(4),
 207                         'initialLayerSpeed': int(profile.getProfileSettingFloat('bottom_layer_speed')),
 208                         'printSpeed': int(profile.getProfileSettingFloat('print_speed')),
 209                         'infillSpeed': int(profile.getProfileSettingFloat('infill_speed')) if int(profile.getProfileSettingFloat('infill_speed')) > 0 else int(profile.getProfileSettingFloat('print_speed')),
 210                         'moveSpeed': int(profile.getProfileSettingFloat('travel_speed')),
 211                         'fanOnLayerNr': int(profile.getProfileSettingFloat('fan_layer')),
 212                         'fanSpeedMin': int(profile.getProfileSettingFloat('fan_speed')) if profile.getProfileSetting('fan_enabled') == 'True' else 0,
 213                         'fanSpeedMax': int(profile.getProfileSettingFloat('fan_speed_max')) if profile.getProfileSetting('fan_enabled') == 'True' else 0,
 214                         'supportAngle': int(-1) if profile.getProfileSetting('support') == 'None' else int(60),
 215                         'supportEverywhere': int(1) if profile.getProfileSetting('support') == 'Everywhere' else int(0),
 216                         'supportLineWidth': int(profile.getProfileSettingFloat('support_rate') * profile.calculateEdgeWidth() * 1000 / 100),
 217                         'retractionAmount': int(profile.getProfileSettingFloat('retraction_amount') * 1000),
 218                         'retractionSpeed': int(profile.getProfileSettingFloat('retraction_speed')),
 219                         'objectSink': int(profile.getProfileSettingFloat('object_sink') * 1000),
 220                         'minimalLayerTime': int(profile.getProfileSettingFloat('cool_min_layer_time')),
 221                         'minimalFeedrate': int(profile.getProfileSettingFloat('cool_min_feedrate')),
 222                         'coolHeadLift': 1 if profile.getProfileSetting('cool_head_lift') == 'True' else 0,
 223                         'startCode': profile.getAlterationFileContents('start.gcode'),
 224                         'endCode': profile.getAlterationFileContents('end.gcode'),
 225
 226                         'extruderOffset[1].X': int(profile.getPreferenceFloat('extruder_offset_x1') * 1000),
 227                         'extruderOffset[1].Y': int(profile.getPreferenceFloat('extruder_offset_y1') * 1000),
 228                         'extruderOffset[2].X': int(profile.getPreferenceFloat('extruder_offset_x2') * 1000),
 229                         'extruderOffset[2].Y': int(profile.getPreferenceFloat('extruder_offset_y2') * 1000),
 230                         'extruderOffset[3].X': int(profile.getPreferenceFloat('extruder_offset_x3') * 1000),
 231                         'extruderOffset[3].Y': int(profile.getPreferenceFloat('extruder_offset_y3') * 1000),
 232                 }
 233                 if profile.getProfileSetting('platform_adhesion') == 'Brim':
 234                         settings['skirtDistance'] = 0
 235                         settings['skirtLineCount'] = int(profile.getProfileSettingFloat('brim_line_count'))
 236                 elif profile.getProfileSetting('platform_adhesion') == 'Raft':
 237                         settings['skirtDistance'] = 0
 238                         settings['skirtLineCount'] = 0
 239                         settings['raftMargin'] = int(profile.getProfileSettingFloat('raft_margin') * 1000);
 240                         settings['raftBaseThickness'] = int(profile.getProfileSettingFloat('raft_base_thickness') * 1000);
 241                         settings['raftBaseLinewidth'] = int(profile.getProfileSettingFloat('raft_base_linewidth') * 1000);
 242                         settings['raftInterfaceThickness'] = int(profile.getProfileSettingFloat('raft_interface_thickness') * 1000);
 243                         settings['raftInterfaceLinewidth'] = int(profile.getProfileSettingFloat('raft_interface_linewidth') * 1000);
 244                 else:
 245                         settings['skirtDistance'] = int(profile.getProfileSettingFloat('skirt_gap') * 1000)
 246                         settings['skirtLineCount'] = int(profile.getProfileSettingFloat('skirt_line_count'))
 247                 if settings['layerThickness'] <= 0:
 248                         settings['layerThickness'] = 1000
 249                 return settings
 250
 251         def _runSliceProcess(self, cmdList):
 252                 kwargs = {}
 253                 if subprocess.mswindows:
 254                         su = subprocess.STARTUPINFO()
 255                         su.dwFlags |= subprocess.STARTF_USESHOWWINDOW
 256                         su.wShowWindow = subprocess.SW_HIDE
 257                         kwargs['startupinfo'] = su
 258                         kwargs['creationflags'] = 0x00004000 #BELOW_NORMAL_PRIORITY_CLASS
 259                 return subprocess.Popen(cmdList, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs)