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"""
This page is in the table of contents.
The unpause script is based on the Shane Hathaway's patch to speed up a line segment to compensate for the delay of the microprocessor. The description is at:
http://shane.willowrise.com/archives/delay-compensation-in-firmware/
The unpause manual page is at:
http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge_Unpause
==Operation==
The default 'Activate Unpause' checkbox is off. When it is on, the functions described below will work, when it is off, the functions will not be called.
==Settings==
===Delay===
Default is 28 milliseconds, which Shane found for the Arduino.
Defines the delay on the microprocessor that will be at least partially compensated for.
===Maximum Speed===
Default is 1.5.
Defines the maximum amount that the feed rate will be sped up to, compared to the original feed rate.
==Examples==
The following examples unpause the file Screw Holder Bottom.stl. The examples are run in a terminal in the folder which contains Screw Holder Bottom.stl and unpause.py.
> python unpause.py
This brings up the unpause dialog.
> python unpause.py Screw Holder Bottom.stl
The unpause tool is parsing the file:
Screw Holder Bottom.stl
..
The unpause tool has created the file:
.. Screw Holder Bottom_unpause.gcode
> python
Python 2.5.1 (r251:54863, Sep 22 2007, 01:43:31)
[GCC 4.2.1 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import unpause
>>> unpause.main()
This brings up the unpause dialog.
>>> unpause.writeOutput( 'Screw Holder Bottom.stl' )
The unpause tool is parsing the file:
Screw Holder Bottom.stl
..
The unpause tool has created the file:
.. Screw Holder Bottom_unpause.gcode
"""
from __future__ import absolute_import
#Init has to be imported first because it has code to workaround the python bug where relative imports don't work if the module is imported as a main module.
import __init__
from skeinforge_tools import profile
from skeinforge_tools.meta_plugins import polyfile
from skeinforge_tools.skeinforge_utilities import consecution
from skeinforge_tools.skeinforge_utilities import euclidean
from skeinforge_tools.skeinforge_utilities import gcodec
from skeinforge_tools.skeinforge_utilities import intercircle
from skeinforge_tools.skeinforge_utilities import interpret
from skeinforge_tools.skeinforge_utilities import settings
import math
import sys
__author__ = "Enrique Perez (perez_enrique@yahoo.com)"
__date__ = "$Date: 2008/21/04 $"
__license__ = "GPL 3.0"
def getCraftedText( fileName, text, repository = None ):
"Unpause a gcode linear move file or text."
return getCraftedTextFromText( gcodec.getTextIfEmpty( fileName, text ), repository )
def getCraftedTextFromText( gcodeText, repository = None ):
"Unpause a gcode linear move text."
if gcodec.isProcedureDoneOrFileIsEmpty( gcodeText, 'unpause' ):
return gcodeText
if repository == None:
repository = settings.getReadRepository( UnpauseRepository() )
if not repository.activateUnpause.value:
return gcodeText
return UnpauseSkein().getCraftedGcode( gcodeText, repository )
def getNewRepository():
"Get the repository constructor."
return UnpauseRepository()
def getSelectedPlugin( repository ):
"Get the selected plugin."
for plugin in repository.unpausePlugins:
if plugin.value:
return plugin
return None
def writeOutput( fileName = '' ):
"Unpause a gcode linear move file."
fileName = interpret.getFirstTranslatorFileNameUnmodified( fileName )
if fileName != '':
consecution.writeChainTextWithNounMessage( fileName, 'unpause' )
class UnpauseRepository:
"A class to handle the unpause settings."
def __init__( self ):
"Set the default settings, execute title & settings fileName."
settings.addListsToRepository( 'skeinforge_tools.craft_plugins.unpause.html', '', self )
self.fileNameInput = settings.FileNameInput().getFromFileName( interpret.getGNUTranslatorGcodeFileTypeTuples(), 'Open File for Unpause', self, '' )
self.openWikiManualHelpPage = settings.HelpPage().getOpenFromAbsolute( 'http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge_Unpause' )
self.activateUnpause = settings.BooleanSetting().getFromValue( 'Activate Unpause', self, False )
self.delay = settings.FloatSpin().getFromValue( 2.0, 'Delay (milliseconds):', self, 42.0, 28.0 )
self.maximumSpeed = settings.FloatSpin().getFromValue( 1.1, 'Maximum Speed (ratio):', self, 1.9, 1.5 )
self.executeTitle = 'Unpause'
def execute( self ):
"Unpause button has been clicked."
fileNames = polyfile.getFileOrDirectoryTypesUnmodifiedGcode( self.fileNameInput.value, interpret.getImportPluginFileNames(), self.fileNameInput.wasCancelled )
for fileName in fileNames:
writeOutput( fileName )
class UnpauseSkein:
"A class to unpause a skein of extrusions."
def __init__( self ):
self.distanceFeedRate = gcodec.DistanceFeedRate()
self.extruderActive = False
self.feedRateMinute = 959.0
self.lineIndex = 0
self.lines = None
self.oldLocation = None
def getCraftedGcode( self, gcodeText, repository ):
"Parse gcode text and store the unpause gcode."
self.delaySecond = repository.delay.value * 0.001
self.maximumSpeed = repository.maximumSpeed.value
self.minimumSpeedUpReciprocal = 1.0 / self.maximumSpeed
self.repository = repository
self.lines = gcodec.getTextLines( gcodeText )
self.parseInitialization()
for self.lineIndex in xrange( self.lineIndex, len( self.lines ) ):
line = self.lines[ self.lineIndex ]
self.parseLine( line )
return self.distanceFeedRate.output.getvalue()
def getUnpausedFeedRateMinute( self, location, splitLine ):
"Get the feed rate which will compensate for the pause."
self.feedRateMinute = gcodec.getFeedRateMinute( self.feedRateMinute, splitLine )
if self.oldLocation == None:
return self.feedRateMinute
distance = location.distance( self.oldLocation )
if distance <= 0.0:
return self.feedRateMinute
specifiedFeedRateSecond = self.feedRateMinute / 60.0
resultantReciprocal = 1.0 - self.delaySecond / distance * specifiedFeedRateSecond
if resultantReciprocal < self.minimumSpeedUpReciprocal:
return self.feedRateMinute * self.maximumSpeed
return self.feedRateMinute / resultantReciprocal
def getUnpausedArcMovement( self, line, splitLine ):
"Get an unpaused arc movement."
if self.oldLocation == None:
return line
self.feedRateMinute = gcodec.getFeedRateMinute( self.feedRateMinute, splitLine )
relativeLocation = gcodec.getLocationFromSplitLine( self.oldLocation, splitLine )
location = self.oldLocation + relativeLocation
self.oldLocation = location
halfPlaneLineDistance = 0.5 * abs( relativeLocation.dropAxis( 2 ) )
radius = gcodec.getDoubleFromCharacterSplitLine( 'R', splitLine )
if radius == None:
relativeCenter = complex( gcodec.getDoubleFromCharacterSplitLine( 'I', splitLine ), gcodec.getDoubleFromCharacterSplitLine( 'J', splitLine ) )
radius = abs( relativeCenter )
angle = 0.0
if radius > 0.0:
angle = math.pi
if halfPlaneLineDistance < radius:
angle = 2.0 * math.asin( halfPlaneLineDistance / radius )
else:
angle *= halfPlaneLineDistance / radius
deltaZ = abs( relativeLocation.z )
arcDistanceZ = complex( abs( angle ) * radius, relativeLocation.z )
distance = abs( arcDistanceZ )
if distance <= 0.0:
return ''
unpausedFeedRateMinute = self.distanceFeedRate.getZLimitedFeedRate( deltaZ, distance, self.feedRateMinute )
return self.distanceFeedRate.getLineWithFeedRate( unpausedFeedRateMinute, line, splitLine )
def getUnpausedLinearMovement( self, line, splitLine ):
"Get an unpaused linear movement."
location = gcodec.getLocationFromSplitLine( self.oldLocation, splitLine )
unpausedFeedRateMinute = self.getUnpausedFeedRateMinute( location, splitLine )
self.oldLocation = location
return self.distanceFeedRate.getLineWithFeedRate( unpausedFeedRateMinute, line, splitLine )
def parseInitialization( self ):
"Parse gcode initialization and store the parameters."
for self.lineIndex in xrange( len( self.lines ) ):
line = self.lines[ self.lineIndex ]
splitLine = gcodec.getSplitLineBeforeBracketSemicolon( line )
firstWord = gcodec.getFirstWord( splitLine )
self.distanceFeedRate.parseSplitLine( firstWord, splitLine )
if firstWord == '(</extruderInitialization>)':
self.distanceFeedRate.addLine( '(<procedureDone> unpause </procedureDone>)' )
return
self.distanceFeedRate.addLine( line )
def parseLine( self, line ):
"Parse a gcode line."
splitLine = gcodec.getSplitLineBeforeBracketSemicolon( line )
if len( splitLine ) < 1:
return
firstWord = splitLine[ 0 ]
if firstWord == 'G1':
line = self.getUnpausedLinearMovement( line, splitLine )
if firstWord == 'G2' or firstWord == 'G3':
line = self.getUnpausedArcMovement( line, splitLine )
self.distanceFeedRate.addLine( line )
def main():
"Display the unpause dialog."
if len( sys.argv ) > 1:
writeOutput( ' '.join( sys.argv[ 1 : ] ) )
else:
settings.startMainLoopFromConstructor( getNewRepository() )
if __name__ == "__main__":
main()
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