Cura/util/gcodeGenerator.py

   1 from __future__ import absolute_import
   2 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
   3
   4 import math
   5
   6 from Cura.util import profile
   7
   8 class gcodeGenerator(object):
   9         def __init__(self):
  10                 self._feedPrint = profile.getProfileSettingFloat('print_speed') * 60
  11                 self._feedTravel = profile.getProfileSettingFloat('travel_speed') * 60
  12                 self._feedRetract = profile.getProfileSettingFloat('retraction_speed') * 60
  13                 filamentRadius = profile.getProfileSettingFloat('filament_diameter') / 2
  14                 filamentArea = math.pi * filamentRadius * filamentRadius
  15                 self._ePerMM = (profile.getProfileSettingFloat('nozzle_size') * 0.1) / filamentArea
  16                 self._eValue = 0.0
  17                 self._x = 0
  18                 self._y = 0
  19                 self._z = 0
  20
  21                 self._list = ['M110', 'G92 E0']
  22
  23         def setPrintSpeed(self, speed):
  24                 self._feedPrint = speed * 60
  25
  26         def setExtrusionRate(self, lineWidth, layerHeight):
  27                 filamentRadius = profile.getProfileSettingFloat('filament_diameter') / 2
  28                 filamentArea = math.pi * filamentRadius * filamentRadius
  29                 self._ePerMM = (lineWidth * layerHeight) / filamentArea
  30
  31         def home(self):
  32                 self._x = 0
  33                 self._y = 0
  34                 self._z = 0
  35                 self._list += ['G28']
  36
  37         def addMove(self, x=None, y=None, z=None):
  38                 cmd = "G0 "
  39                 if x is not None:
  40                         cmd += "X%f " % (x)
  41                         self._x = x
  42                 if y is not None:
  43                         cmd += "Y%f " % (y)
  44                         self._y = y
  45                 if z is not None:
  46                         cmd += "Z%f " % (z)
  47                         self._z = z
  48                 cmd += "F%d" % (self._feedTravel)
  49                 self._list += [cmd]
  50
  51         def addPrime(self, amount=5):
  52                 self._eValue += amount
  53                 self._list += ['G1 E%f F%f' % (self._eValue, self._feedRetract)]
  54
  55         def addRetract(self, amount=5):
  56                 self._eValue -= amount
  57                 self._list += ['G1 E%f F%f' % (self._eValue, self._feedRetract)]
  58
  59         def _addExtrude(self, x=None, y=None, z=None):
  60                 cmd = "G1 "
  61                 oldX = self._x
  62                 oldY = self._y
  63                 if x is not None:
  64                         cmd += "X%f " % (x)
  65                         self._x = x
  66                 if y is not None:
  67                         cmd += "Y%f " % (y)
  68                         self._y = y
  69                 if z is not None:
  70                         cmd += "Z%f " % (z)
  71                         self._z = z
  72                 self._eValue += math.sqrt((self._x - oldX) * (self._x - oldX) + (self._y - oldY) * (self._y - oldY)) * self._ePerMM
  73                 cmd += "E%f F%d" % (self._eValue, self._feedPrint)
  74                 self._list += [cmd]
  75
  76         def addExtrude(self, x=None, y=None, z=None):
  77                 if x is not None and abs(self._x - x) > 10:
  78                         self.addExtrude((self._x + x) / 2.0, y, z)
  79                         self.addExtrude(x, y, z)
  80                         return
  81                 if y is not None and abs(self._y - y) > 10:
  82                         self.addExtrude(x, (self._y + y) / 2.0, z)
  83                         self.addExtrude(x, y, z)
  84                         return
  85                 self._addExtrude(x, y, z)
  86
  87         def addHome(self):
  88                 self._list += ['G28']
  89
  90         def addCmd(self, cmd):
  91                 self._list += [cmd]
  92
  93         def list(self):
  94                 return self._list