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"""
This page is in the table of contents.
Hop is a script to raise the extruder when it is not extruding.
The hop manual page is at:
http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge_Hop
==Operation==
The default 'Activate Hop' checkbox is off. It is off because Vik and Nophead found better results without hopping. When it is on, the functions described below will work, when it is off, the functions will not be called.
==Settings==
===Hop Over Layer Thickness===
Default is one.
Defines the ratio of the hop height over the layer thickness, this is the most important hop setting.
===Minimum Hop Angle===
Default is 20 degrees.
Defines the minimum angle that the path of the extruder will be raised. An angle of ninety means that the extruder will go straight up as soon as it is not extruding and a low angle means the extruder path will gradually rise to the hop height.
==Examples==
The following examples hop the file Screw Holder Bottom.stl. The examples are run in a terminal in the folder which contains Screw Holder Bottom.stl and hop.py.
> python hop.py
This brings up the hop dialog.
> python hop.py Screw Holder Bottom.stl
The hop tool is parsing the file:
Screw Holder Bottom.stl
..
The hop tool has created the file:
.. Screw Holder Bottom_hop.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 hop
>>> hop.main()
This brings up the hop dialog.
>>> hop.writeOutput( 'Screw Holder Bottom.stl' )
The hop tool is parsing the file:
Screw Holder Bottom.stl
..
The hop tool has created the file:
.. Screw Holder Bottom_hop.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 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, hopRepository = None ):
"Hop a gcode linear move text."
return getCraftedTextFromText( gcodec.getTextIfEmpty( fileName, text ), hopRepository )
def getCraftedTextFromText( gcodeText, hopRepository = None ):
"Hop a gcode linear move text."
if gcodec.isProcedureDoneOrFileIsEmpty( gcodeText, 'hop' ):
return gcodeText
if hopRepository == None:
hopRepository = settings.getReadRepository( HopRepository() )
if not hopRepository.activateHop.value:
return gcodeText
return HopSkein().getCraftedGcode( gcodeText, hopRepository )
def getNewRepository():
"Get the repository constructor."
return HopRepository()
def writeOutput( fileName = '' ):
"Hop a gcode linear move file. Chain hop the gcode if it is not already hopped. If no fileName is specified, hop the first unmodified gcode file in this folder."
fileName = interpret.getFirstTranslatorFileNameUnmodified( fileName )
if fileName != '':
consecution.writeChainTextWithNounMessage( fileName, 'hop' )
class HopRepository:
"A class to handle the hop settings."
def __init__( self ):
"Set the default settings, execute title & settings fileName."
profile.addListsToCraftTypeRepository( 'skeinforge_tools.craft_plugins.hop.html', self )
self.fileNameInput = settings.FileNameInput().getFromFileName( interpret.getGNUTranslatorGcodeFileTypeTuples(), 'Open File for Hop', self, '' )
self.openWikiManualHelpPage = settings.HelpPage().getOpenFromAbsolute( 'http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge_Hop' )
self.activateHop = settings.BooleanSetting().getFromValue( 'Activate Hop', self, False )
self.hopOverLayerThickness = settings.FloatSpin().getFromValue( 0.5, 'Hop Over Layer Thickness (ratio):', self, 1.5, 1.0 )
self.minimumHopAngle = settings.FloatSpin().getFromValue( 20.0, 'Minimum Hop Angle (degrees):', self, 60.0, 30.0 )
self.executeTitle = 'Hop'
def execute( self ):
"Hop button has been clicked."
fileNames = polyfile.getFileOrDirectoryTypesUnmodifiedGcode( self.fileNameInput.value, interpret.getImportPluginFileNames(), self.fileNameInput.wasCancelled )
for fileName in fileNames:
writeOutput( fileName )
class HopSkein:
"A class to hop a skein of extrusions."
def __init__( self ):
self.distanceFeedRate = gcodec.DistanceFeedRate()
self.extruderActive = False
self.feedRateMinute = 961.0
self.hopHeight = 0.4
self.hopDistance = self.hopHeight
self.justDeactivated = False
self.lineIndex = 0
self.lines = None
self.oldLocation = None
def getCraftedGcode( self, gcodeText, hopRepository ):
"Parse gcode text and store the hop gcode."
self.lines = gcodec.getTextLines( gcodeText )
self.minimumSlope = math.tan( math.radians( hopRepository.minimumHopAngle.value ) )
self.parseInitialization( hopRepository )
for self.lineIndex in xrange( self.lineIndex, len( self.lines ) ):
line = self.lines[ self.lineIndex ]
self.parseLine( line )
return self.distanceFeedRate.output.getvalue()
def getHopLine( self, line ):
"Get hopped gcode line."
splitLine = gcodec.getSplitLineBeforeBracketSemicolon( line )
self.feedRateMinute = gcodec.getFeedRateMinute( self.feedRateMinute, splitLine )
if self.extruderActive:
return line
location = gcodec.getLocationFromSplitLine( self.oldLocation, splitLine )
highestZ = location.z
if self.oldLocation != None:
highestZ = max( highestZ, self.oldLocation.z )
highestZHop = highestZ + self.hopHeight
locationComplex = location.dropAxis( 2 )
if self.justDeactivated:
oldLocationComplex = self.oldLocation.dropAxis( 2 )
distance = abs( locationComplex - oldLocationComplex )
if distance < self.minimumDistance:
if self.isNextTravel():
return self.distanceFeedRate.getLineWithZ( line, splitLine, highestZHop )
alongRatio = min( 0.41666666, self.hopDistance / distance )
oneMinusAlong = 1.0 - alongRatio
closeLocation = oldLocationComplex * oneMinusAlong + locationComplex * alongRatio
self.distanceFeedRate.addLine( self.distanceFeedRate.getLineWithZ( line, splitLine, highestZHop ) )
if self.isNextTravel():
return self.distanceFeedRate.getLineWithZ( line, splitLine, highestZHop )
farLocation = oldLocationComplex * alongRatio + locationComplex * oneMinusAlong
self.distanceFeedRate.addGcodeMovementZWithFeedRate( self.feedRateMinute, farLocation, highestZHop )
return line
if self.isNextTravel():
return self.distanceFeedRate.getLineWithZ( line, splitLine, highestZHop )
return line
def isNextTravel( self ):
"Determine if there is another linear travel before the thread ends."
for afterIndex in xrange( self.lineIndex + 1, len( self.lines ) ):
line = self.lines[ afterIndex ]
splitLine = gcodec.getSplitLineBeforeBracketSemicolon( line )
firstWord = "";
if len( splitLine ) > 0:
firstWord = splitLine[ 0 ]
if firstWord == 'G1':
return True
if firstWord == 'M101':
return False
return False
def parseInitialization( self, hopRepository ):
"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 == '(<layerThickness>':
layerThickness = float( splitLine[ 1 ] )
self.hopHeight = hopRepository.hopOverLayerThickness.value * layerThickness
self.hopDistance = self.hopHeight / self.minimumSlope
self.minimumDistance = 0.5 * layerThickness
elif firstWord == '(</extruderInitialization>)':
self.distanceFeedRate.addLine( '(<procedureDone> hop </procedureDone>)' )
return
self.distanceFeedRate.addLine( line )
def parseLine( self, line ):
"Parse a gcode line and add it to the bevel gcode."
splitLine = gcodec.getSplitLineBeforeBracketSemicolon( line )
if len( splitLine ) < 1:
return
firstWord = splitLine[ 0 ]
if firstWord == 'G1':
line = self.getHopLine( line )
self.oldLocation = gcodec.getLocationFromSplitLine( self.oldLocation, splitLine )
self.justDeactivated = False
elif firstWord == 'M101':
self.extruderActive = True
elif firstWord == 'M103':
self.extruderActive = False
self.justDeactivated = True
self.distanceFeedRate.addLine( line )
def main():
"Display the hop dialog."
if len( sys.argv ) > 1:
writeOutput( ' '.join( sys.argv[ 1 : ] ) )
else:
settings.startMainLoopFromConstructor( getNewRepository() )
if __name__ == "__main__":
main()
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