Cura/util/sliceEngine.py

   1 import subprocess
   2 import time
   3 import numpy
   4 import os
   5 import warnings
   6 import threading
   7 import traceback
   8 import platform
   9 import sys
  10
  11 from Cura.util import profile
  12
  13 def getEngineFilename():
  14         if platform.system() == 'Windows':
  15                 if os.path.exists('C:/Software/Cura_SteamEngine/_bin/Release/Cura_SteamEngine.exe'):
  16                         return 'C:/Software/Cura_SteamEngine/_bin/Release/Cura_SteamEngine.exe'
  17                 return os.path.abspath(os.path.join(os.path.dirname(__file__), '../..', 'SteamEngine.exe'))
  18         if hasattr(sys, 'frozen'):
  19                 return os.path.abspath(os.path.join(os.path.dirname(__file__), '../../../../..', 'SteamEngine'))
  20         return os.path.abspath(os.path.join(os.path.dirname(__file__), '../..', 'SteamEngine'))
  21
  22 def getTempFilename():
  23         warnings.simplefilter('ignore')
  24         ret = os.tempnam(None, "Cura_Tmp")
  25         warnings.simplefilter('default')
  26         return ret
  27
  28 class Slicer(object):
  29         def __init__(self, progressCallback):
  30                 self._process = None
  31                 self._thread = None
  32                 self._callback = progressCallback
  33                 self._binaryStorageFilename = getTempFilename()
  34                 self._exportFilename = getTempFilename()
  35                 self._progressSteps = ['inset', 'skin', 'export']
  36                 self._objCount = 0
  37
  38         def cleanup(self):
  39                 self.abortSlicer()
  40                 try:
  41                         os.remove(self._binaryStorageFilename)
  42                 except:
  43                         pass
  44                 try:
  45                         os.remove(self._exportFilename)
  46                 except:
  47                         pass
  48
  49         def abortSlicer(self):
  50                 if self._process is not None:
  51                         try:
  52                                 self._process.terminate()
  53                         except:
  54                                 pass
  55                         self._thread.join()
  56
  57         def getGCodeFilename(self):
  58                 return self._exportFilename
  59
  60         def runSlicer(self, scene):
  61                 self.abortSlicer()
  62                 self._callback(0.0, False)
  63
  64                 commandList = [getEngineFilename(), '-vv']
  65                 for k, v in self._engineSettings().iteritems():
  66                         commandList += ['-s', '%s=%s' % (k, str(v))]
  67                 commandList += ['-o', self._exportFilename]
  68                 commandList += ['-b', self._binaryStorageFilename]
  69                 self._objCount = 0
  70                 with open(self._binaryStorageFilename, "wb") as f:
  71                         for n in scene.printOrder():
  72                                 obj = scene.objects()[n]
  73                                 for mesh in obj._meshList:
  74                                         n = numpy.array([mesh.vertexCount], numpy.int32)
  75                                         f.write(n.tostring())
  76                                         f.write(mesh.vertexes.tostring())
  77                                 pos = obj.getPosition() * 1000
  78                                 pos += numpy.array([profile.getPreferenceFloat('machine_width') * 1000 / 2, profile.getPreferenceFloat('machine_depth') * 1000 / 2])
  79                                 commandList += ['-m', ','.join(map(str, obj._matrix.getA().flatten()))]
  80                                 commandList += ['-s', 'posx=%d' % int(pos[0]), '-s', 'posy=%d' % int(pos[1])]
  81                                 commandList += ['#' * len(obj._meshList)]
  82                                 self._objCount += 1
  83                 if self._objCount > 0:
  84                         print ' '.join(commandList)
  85                         try:
  86                                 self._process = self._runSliceProcess(commandList)
  87                                 self._thread = threading.Thread(target=self._watchProcess)
  88                                 self._thread.daemon = True
  89                                 self._thread.start()
  90                         except OSError:
  91                                 traceback.print_exc()
  92
  93         def _watchProcess(self):
  94                 self._callback(0.0, False)
  95                 line = self._process.stdout.readline()
  96                 objectNr = 0
  97                 while len(line):
  98                         line = line.strip()
  99                         if line.startswith('Progress:'):
 100                                 line = line.split(':')
 101                                 if line[1] == 'process':
 102                                         objectNr += 1
 103                                 else:
 104                                         progressValue = float(line[2]) / float(line[3])
 105                                         progressValue /= len(self._progressSteps)
 106                                         progressValue += 1.0 / len(self._progressSteps) * self._progressSteps.index(line[1])
 107
 108                                         progressValue /= self._objCount
 109                                         progressValue += 1.0 / self._objCount * objectNr
 110                                         try:
 111                                                 self._callback(progressValue, False)
 112                                         except:
 113                                                 pass
 114                         else:
 115                                 #print '#', line.strip()
 116                                 pass
 117                         line = self._process.stdout.readline()
 118                 for line in self._process.stderr:
 119                         print line.strip()
 120                 returnCode = self._process.wait()
 121                 print returnCode
 122                 try:
 123                         if returnCode == 0:
 124                                 self._callback(1.0, True)
 125                         else:
 126                                 self._callback(0.0, False)
 127                 except:
 128                         pass
 129                 self._process = None
 130
 131         def _engineSettings(self):
 132                 return {
 133                         'layerThickness': int(profile.getProfileSettingFloat('layer_height') * 1000),
 134                         'initialLayerThickness': int(profile.getProfileSettingFloat('bottom_thickness') * 1000),
 135                         'filamentDiameter': int(profile.getProfileSettingFloat('filament_diameter') * 1000),
 136                         'extrusionWidth': int(profile.calculateEdgeWidth() * 1000),
 137                         'insetCount': int(profile.calculateLineCount()),
 138                         'downSkinCount': int(profile.calculateSolidLayerCount()),
 139                         'upSkinCount': int(profile.calculateSolidLayerCount()),
 140                         'sparseInfillLineDistance': int(100 * profile.calculateEdgeWidth() * 1000 / profile.getProfileSettingFloat('fill_density')) if profile.getProfileSettingFloat('fill_density') > 0 else 9999999999,
 141                         'skirtDistance': int(profile.getProfileSettingFloat('skirt_gap') * 1000),
 142                         'skirtLineCount': int(profile.getProfileSettingFloat('skirt_line_count')),
 143                         'initialSpeedupLayers': int(4),
 144                         'initialLayerSpeed': int(profile.getProfileSettingFloat('bottom_layer_speed')),
 145                         'printSpeed': int(profile.getProfileSettingFloat('print_speed')),
 146                         'moveSpeed': int(profile.getProfileSettingFloat('travel_speed')),
 147                         'fanOnLayerNr': int(profile.getProfileSettingFloat('fan_layer')),
 148                         'supportAngle': int(-1) if profile.getProfileSetting('support') == 'None' else int(60),
 149                         'supportEverywhere': int(1) if profile.getProfileSetting('support') == 'Everywhere' else int(0),
 150                         'retractionAmount': int(profile.getProfileSettingFloat('retraction_amount') * 1000),
 151                         'retractionSpeed': int(profile.getProfileSettingFloat('retraction_speed')),
 152                         'objectSink': int(profile.getProfileSettingFloat('object_sink') * 1000),
 153                 }
 154
 155         def _runSliceProcess(self, cmdList):
 156                 kwargs = {}
 157                 if subprocess.mswindows:
 158                         su = subprocess.STARTUPINFO()
 159                         su.dwFlags |= subprocess.STARTF_USESHOWWINDOW
 160                         su.wShowWindow = subprocess.SW_HIDE
 161                         kwargs['startupinfo'] = su
 162                         kwargs['creationflags'] = 0x00004000 #BELOW_NORMAL_PRIORITY_CLASS
 163                 return subprocess.Popen(cmdList, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs)