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