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