Cura/util/sliceEngine.py

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