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sendto_silhouette.py
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#!/usr/bin/env python
#
# Inkscape extension for driving a silhouette cameo
# (C) 2013 [email protected]. Licensed under CC-BY-SA-3.0 or GPL-2.0 at your choice.
# (C) 2014,2015 [email protected]
#
# code snippets visited to learn the extension 'effect' interface:
# - http://sourceforge.net/projects/inkcut/
# - http://code.google.com/p/inkscape2tikz/
# - http://wiki.inkscape.org/wiki/index.php/PythonEffectTutorial
# - http://github.com/jnweiger/inkscape-gears-dev
# - http://code.google.com/p/eggbotcode/
# - http://www.bobcookdev.com/inkscape/better_dxf_output.zip
#
# Porting to OSX
# - https://github.com/pmonta/gerber2graphtec/blob/master/file2graphtec
# - https://github.com/pmonta/gerber2graphtec/blob/master/README
#
# 2013-05-09 jw, V0.1 -- initial draught
# 2013-05-10 jw, V0.2 -- can plot simple cases without transforms.
# 2013-05-11 jw, V0.3 -- still using inkcut/plot.py -- fixed write(),
# improved logging, flipped y-axis.
# 2013-05-12 jw, v0.4 -- No unintended multipass when nothing is selected.
# Explicit multipass option added.
# Emplying recursivelyTraverseSvg() from eggbotcode
# TODO: coordinate system of page is not exact.
# 2013-05-13 jw, v0.5 -- transporting docWidth/docHeight to dev.plot()
# 2013-05-15 jw, v0.6 -- Replaced recursivelyTraverseSvg() and friends with the
# versions from eggbot.py, those from eggbot_hatch.py
# would only do closed paths. Makes sense for them, but
# not for us.
# Added no_device=True debugging aid to SilhouetteCameo()
# 2013-05-17 jw, v0.7 -- Honor layer visibility by checking style="display:none"
# penUP()/penDown() bugfix to avoid false connections between objects.
# Added option reversetoggle, to cut the opposite direction.
# 2013-05-19 jw, v0.8 -- Split GUI into two pages. Added dummy and mat-free checkboxes.
# misc/corner_detect.py done, can now load a dump saved by dummy.
# Udev rules and script added, so that we get a nice notify
# guiding users towards inkscape, when connecting a device.
# 2013-05-25 jw, v0.9 -- mat_free option added. The slicing and sharp corner strategy
# appears useful.
# 2013-05-26 jw, v1.0 -- Some tuning done. fixed preset scaling, improved path recombination.
# 2013-05-26 jw, v1.1 -- Strategy.MatFree.path_overshoot() added. With 0.2mm overshoot
# the paper now comes apart almost by itself. great.
# Buffer percent estimation added. We now have an estimate
# how long the buffered data will need.
# 2013-05-30 jw, v1.2 -- Option autocrop added. Speed improvement: only parse visible layers.
# 2013-05-31 jw, v1.3 -- sharp_turn() now takes self.sharp_turn_fwd_ratio parameter.
# test_drive.py now draws arrows. All [0],[1] converted to new .x,.y syntax.
# Split Geometry.py from Strategy.py; class Barrier implemented.
# 2013-10-24 jw, v1.4 -- Fixed an abort in Strategy. when pt has no seg.
# 2013-11-02 jw, v1.5 -- Added protability code. This might eventually lead to
# working code on windows and macosx too. Still linux only.
# 2013-11-08 jw, v1.6 -- supporting mm in getLength().
# 2013-12-16 jw, v1.7 -- https://github.com/jnweiger/inkscape-silhouette/issues/1
# fixed. Silly copy/paste bug. Looks like I miss a testsuite.
# 2014-01-23 jw, v1.8 -- improving portability by using os.devnull, os.path.join, tempfile.
# Partial fixes for https://github.com/jnweiger/inkscape-silhouette/issues/2
# Enumerating devices if none are found.
# 2014-01-28 jw, v1.9 -- We cannot expect posix semantics from windows.
# Experimental retry added when write returns 0.
# issues/2#issuecomment-33526659
# 2014-02-04 jw, v1.9a -- new default: matfree false, about page added.
# 2014-03-29 jw, v1.9b -- added own dir to sys.path for issue#3.
# 2014-04-06 jw, v1.9c -- attempted workaround for issue#4
# 2014-07-18 jw, v1.9d -- better diagnostics. hints *and* (further down) a stack backtrace.
# 2014-09-18 jw, v1.10 -- more diagnostics, fixed trim margins aka autocrop to still honor hardware margins.
# 2014-10-11 jw, v1.11 -- no more complaints about empty <text/> elements. Ignoring <flowRoot>
# 2014-10-25 jw, v1.12 -- better error messages.
# 2014-10-31 jw, v1.13 -- fixed usb.core.write() without interface parameter. Set Graphtec.py/need_interface if needed.
# 2015-06-06 jw, v1.14 -- fixed timout errors, refactored much code.
# Added misc/silhouette_move.py misc/silhouette_cut.py, misc/endless_clock.py
# 2016-01-15 jw, v1.15 -- ubuntu loads the wrong usb library.
# 2016-05-15 jw, v1.16 -- merged regmarks code from https://github.com/fablabnbg/inkscape-silhouette/pull/23
# 2016-05-17 jw, v1.17 -- fix avoid dev.reset in Graphtec.py, fix helps with
# https://github.com/fablabnbg/inkscape-silhouette/issues/10
# 2016-05-21 jw, v1.18 -- warn about python-usb < 1.0 and give instructions.
# Limit pressure to 18. 19 or 20 make the machine
# scroll forward backward for several minutes.
# Support document unit inches. https://github.com/fablabnbg/inkscape-silhouette/issues/19
# 2016-12-18, jw, v1.19 -- support for dashed lines added. Thanks to mehtank
# https://github.com/fablabnbg/inkscape-silhouette/pull/33
__version__ = '1.19' # Keep in sync with sendto_silhouette.inx ca line 79
__author__ = 'Juergen Weigert <[email protected]> and contributors'
import sys, os, shutil, time, logging, tempfile
# we sys.path.append() the directory where this
# sendto_silhouette.py script lives. Attempt to help with
# https://github.com/jnweiger/inkscape-silhouette/issues/3
sys.path.append(os.path.dirname(os.path.abspath(sys.argv[0])))
sys_platform = sys.platform.lower()
if sys_platform.startswith('win'):
sys.path.append('C:\Program Files\Inkscape\share\extensions')
elif sys_platform.startswith('darwin'):
sys.path.append('~/.config/inkscape/extensions')
else: # linux
# if sys_platform.startswith('linux'):
sys.path.append('/usr/share/inkscape/extensions')
# We will use the inkex module with the predefined Effect base class.
import inkex
from bezmisc import *
from simpletransform import *
import simplepath
import cubicsuperpath
import cspsubdiv
import string # for string.lstrip
import gettext
from optparse import SUPPRESS_HELP
try:
inkex.localize() # 0.91
except:
_ = gettext.gettext # 0.49
from silhouette.Graphtec import SilhouetteCameo
from silhouette.Strategy import MatFree
from silhouette.convert2dashes import splitPath
from silhouette.Geometry import dist_sq, XY_a
N_PAGE_WIDTH = 3200
N_PAGE_HEIGHT = 800
IDENTITY_TRANSFORM = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]
def px2mm(px):
'''
Convert inkscape pixels to mm.
The default inkscape unit, called 'px' is 90dpi
'''
return px*25.4/90
# Lifted with impunity from eggbot.py
# Added all known inkscape units. https://github.com/fablabnbg/inkscape-silhouette/issues/19
def parseLengthWithUnits( str ):
'''
Parse an SVG value which may or may not have units attached
This version is greatly simplified in that it only allows: no units,
units of px, mm, and %. Everything else, it returns None for.
There is a more general routine to consider in scour.py if more
generality is ever needed.
'''
u = 'px'
s = str.strip()
if s[-2:] == 'px':
s = s[:-2]
elif s[-2:] == 'mm':
u = 'mm'
s = s[:-2]
elif s[-2:] == 'pt':
u = 'pt'
s = s[:-2]
elif s[-2:] == 'pc':
u = 'pc'
s = s[:-2]
elif s[-2:] == 'cm':
u = 'cm'
s = s[:-2]
elif s[-2:] == 'in':
u = 'in'
s = s[:-2]
elif s[-1:] == '%':
u = '%'
s = s[:-1]
try:
v = float( s )
except:
print >>sys.stderr, "parseLengthWithUnits: unknown unit ", s
return None, None
return v, u
def subdivideCubicPath( sp, flat, i=1 ):
"""
Break up a bezier curve into smaller curves, each of which
is approximately a straight line within a given tolerance
(the "smoothness" defined by [flat]).
This is a modified version of cspsubdiv.cspsubdiv() rewritten
to avoid recurrence.
"""
while True:
while True:
if i >= len( sp ):
return
p0 = sp[i - 1][1]
p1 = sp[i - 1][2]
p2 = sp[i][0]
p3 = sp[i][1]
b = ( p0, p1, p2, p3 )
if cspsubdiv.maxdist( b ) > flat:
break
i += 1
one, two = beziersplitatt( b, 0.5 )
sp[i - 1][2] = one[1]
sp[i][0] = two[2]
p = [one[2], one[3], two[1]]
sp[i:1] = [p]
class SendtoSilhouette(inkex.Effect):
"""
Inkscape Extension to send to a Silhouette Cameo
"""
def __init__(self):
# Call the base class constructor.
inkex.Effect.__init__(self)
self.cut = []
self.warnings = {}
self.handle = 255
self.pathcount = 0
self.resumeMode = False
self.bStopped = False
self.plotCurrentLayer = True
self.allLayers = True # True: all except hidden layers. False: only selected layers.
self.step_scaling_factor = 1 # see also px2mm()
self.ptFirst = None
self.fPrevX = None
self.fPrevY = None
self.fX = None
self.fY = None
self.svgLastPath = 0
self.nodeCount = 0
self.paths = []
self.transforms = {}
# For handling an SVG viewbox attribute, we will need to know the
# values of the document's <svg> width and height attributes as well
# as establishing a transform from the viewbox to the display.
self.docWidth = float( N_PAGE_WIDTH )
self.docHeight = float( N_PAGE_HEIGHT )
self.docTransform = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]
self.dumpname= os.path.join(tempfile.gettempdir(), "silhouette.dump")
try:
self.tty = open("/dev/tty", 'w')
except:
self.tty = open(os.devnull, 'w') # '/dev/null' for POSIX, 'nul' for Windows.
# print >>self.tty, "__init__"
self.OptionParser.add_option('--active-tab', action = 'store', dest = 'active_tab',
help=SUPPRESS_HELP)
self.OptionParser.add_option('-d', '--dashes',
action = 'store', dest = 'dashes', type = 'inkbool', default = False,
help='convert paths with dashed strokes to separate subpaths for perforated cuts')
self.OptionParser.add_option('-a', '--autocrop',
action = 'store', dest = 'autocrop', type = 'inkbool', default = False,
help='trim away top and left margin (before adding offsets)')
self.OptionParser.add_option('-b', '--bbox', '--bbox-only', '--bbox_only',
action = 'store', dest = 'bboxonly', type = 'inkbool', default = False,
help='draft the objects bounding box instead of the objects')
self.OptionParser.add_option('--dummy',
action = 'store', dest = 'dummy', type = 'inkbool', default = False,
help="Dump raw data to "+self.dumpname+" instead of cutting.")
self.OptionParser.add_option('--mat-free', '--mat_free',
action = 'store', dest = 'mat_free', type = 'inkbool', default = False,
help="Optimize movements for cutting without a cutting mat.")
self.OptionParser.add_option('-m', '--media', '--media-id', '--media_id',
action = 'store', dest = 'media', default = '132',
choices=('100','101','102','106','111','112','113',
'120','121','122','123','124','125','126','127','128','129','130',
'131','132','133','134','135','136','137','138','300'),
help="113 = pen, 132 = printer paper, 300 = custom")
self.OptionParser.add_option('-o', '--overcut',
action = 'store', dest = 'overcut', type = 'float', default = 0.5,
help="overcut on circular paths. [mm]")
self.OptionParser.add_option('-M', '--multipass',
action = 'store', dest = 'multipass', type = 'int', default = '1',
help="[1..8], cut/draw each path object multiple times.")
self.OptionParser.add_option('-p', '--pressure',
action = 'store', dest = 'pressure', type = 'int', default = 10,
help="[1..18], or 0 for media default")
self.OptionParser.add_option('-r', '--reversetoggle',
action = 'store', dest = 'reversetoggle', type = 'inkbool', default = False,
help="Cut each path the other direction. Affects every second pass when multipass.")
self.OptionParser.add_option('-s', '--speed',
action = 'store', dest = 'speed', type = 'int', default = 10,
help="[1..10], or 0 for media default")
self.OptionParser.add_option( "-S", "--smoothness", action="store", type="float",
dest="smoothness", default=.2, help="Smoothness of curves" )
self.OptionParser.add_option('-t', '--tool', action = 'store',
choices=('cut', 'pen','default'), dest = 'tool', default = None, help="Optimize for pen or knive")
self.OptionParser.add_option('-V', '--version',
action = 'store_const', const=True, dest = 'version', default = False,
help='Just print version number ("'+__version__+'") and exit.')
self.OptionParser.add_option('-w', '--wait', '--wait-done', '--wait_done',
action = 'store', dest = 'wait_done', type = 'inkbool', default = False,
help='After sending wait til device reports ready')
self.OptionParser.add_option('-x', '--x-off', '--x_off', action = 'store',
type = 'float', dest = 'x_off', default = 0.0, help="X-Offset [mm]")
self.OptionParser.add_option('-y', '--y-off', '--y_off', action = 'store',
type = 'float', dest = 'y_off', default = 0.0, help="Y-Offset [mm]")
self.OptionParser.add_option('-R', '--regmark',
action = 'store', dest = 'regmark', type = 'inkbool', default = False,
help="The document has registration marks.")
self.OptionParser.add_option('--regsearch',
action = 'store', dest = 'regsearch', type = 'inkbool', default = False,
help="Search for the registration marks.")
self.OptionParser.add_option('-X', '--reg-x', '--regwidth', action = 'store',
type = 'float', dest = 'regwidth', default = 180.0, help="X mark distance [mm]")
self.OptionParser.add_option('-Y', '--reg-y', '--reglength', action = 'store',
type = 'float', dest = 'reglength', default = 230.0, help="Y mark distance [mm]")
self.OptionParser.add_option('--rego-x', '--regoriginx',action = 'store',
type = 'float', dest = 'regoriginx', default = 15.0, help="X mark origin from left [mm]")
self.OptionParser.add_option('--rego-y', '--regoriginy', action = 'store',
type = 'float', dest = 'regoriginy', default = 20.0, help="X mark origin from top [mm]")
self.OptionParser.add_option('-e', '--endposition', '--end-postition',
'--end_position', action = 'store', choices=('start','below'),
dest = 'endposition', default = 'below', help="Position of head after cutting: start or below")
def version(self):
return __version__
def author(self):
return __author__
def penUp(self):
# print >>self.tty, "\r penUp", [(self.fPrevX,self.fPrevY), (self.fX, self.fY)]
self.fPrevX = None # flag that we are up
self.fPrevY = None
def penDown(self):
# print >>self.tty, "\r penDown", [(self.fPrevX,self.fPrevY), (self.fX, self.fY)]
self.paths.append([(self.fX,self.fY)])
self.fPrevX = self.fX # flag that we are down
self.fPrevY = self.fY
def plotLineAndTime( self ):
'''
Send commands out the com port as a line segment (dx, dy) and a time (ms) the segment
should take to implement
'''
if self.bStopped:
return
if ( self.fPrevX is None ):
return
# assuming that penDown() was called before.
self.paths[-1].append((self.fX,self.fY))
# print >>self.tty, "\r plotLineAndTime((%g,%g)-(%g,%g)) " % (self.fPrevX,self.fPrevY, self.fX, self.fY);
## lifted from eggbot.py, gratefully bowing to the author
def plotPath( self, path, matTransform ):
'''
Plot the path while applying the transformation defined
by the matrix [matTransform].
'''
# turn this path into a cubicsuperpath (list of beziers)...
d = path.get( 'd' )
if len( simplepath.parsePath( d ) ) == 0:
return
p = cubicsuperpath.parsePath( d )
# ...and apply the transformation to each point
applyTransformToPath( matTransform, p )
# p is now a list of lists of cubic beziers [control pt1, control pt2, endpoint]
# where the start-point is the last point in the previous segment.
for sp in p:
subdivideCubicPath( sp, self.options.smoothness )
nIndex = 0
for csp in sp:
if self.bStopped:
return
if self.plotCurrentLayer:
if nIndex == 0:
self.penUp()
self.virtualPenIsUp = True
elif nIndex == 1:
self.penDown()
self.virtualPenIsUp = False
nIndex += 1
self.fX = float( csp[1][0] ) / self.step_scaling_factor
self.fY = float( csp[1][1] ) / self.step_scaling_factor
# store home
if self.ptFirst is None:
self.ptFirst = ( self.fX, self.fY )
if self.plotCurrentLayer:
self.plotLineAndTime()
self.fPrevX = self.fX
self.fPrevY = self.fY
def DoWePlotLayer( self, strLayerName ):
"""
We are only plotting *some* layers. Check to see
whether or not we're going to plot this one.
First: scan first 4 chars of node id for first non-numeric character,
and scan the part before that (if any) into a number
Then, see if the number matches the layer.
"""
TempNumString = 'x'
stringPos = 1
CurrentLayerName = string.lstrip( strLayerName ) #remove leading whitespace
# Look at layer name. Sample first character, then first two, and
# so on, until the string ends or the string no longer consists of
# digit characters only.
MaxLength = len( CurrentLayerName )
if MaxLength > 0:
while stringPos <= MaxLength:
if str.isdigit( CurrentLayerName[:stringPos] ):
TempNumString = CurrentLayerName[:stringPos] # Store longest numeric string so far
stringPos = stringPos + 1
else:
break
self.plotCurrentLayer = False #Temporarily assume that we aren't plotting the layer
if ( str.isdigit( TempNumString ) ):
if ( self.svgLayer == int( float( TempNumString ) ) ):
self.plotCurrentLayer = True #We get to plot the layer!
self.LayersPlotted += 1
#Note: this function is only called if we are NOT plotting all layers.
def recursivelyTraverseSvg( self, aNodeList,
parent_visibility='visible',
extra_transform=IDENTITY_TRANSFORM ):
"""
Recursively traverse the svg file to plot out all of the
paths. The function keeps track of the composite transformation
that should be applied to each path.
This function handles path, group, line, rect, polyline, polygon,
circle, ellipse and use (clone) elements. Notable elements not
handled include text. Unhandled elements should be converted to
paths in Inkscape.
"""
if not self.plotCurrentLayer:
return # saves us a lot of time ...
for node in aNodeList:
# Ignore invisible nodes
v = node.get( 'visibility', parent_visibility )
if v == 'inherit':
v = parent_visibility
if v == 'hidden' or v == 'collapse':
pass
# calculate this object's transform
transform = composeParents(node, IDENTITY_TRANSFORM)
transform = composeTransform(self.docTransform, transform)
transform = composeTransform(extra_transform, transform)
if node.tag == inkex.addNS( 'g', 'svg' ) or node.tag == 'g':
self.penUp()
if ( node.get( inkex.addNS( 'groupmode', 'inkscape' ) ) == 'layer' ):
if (node.get('style','') == 'display:none'):
self.plotCurrentLayer = False
else:
self.plotCurrentLayer = True
if not self.allLayers:
# inkex.errormsg('Plotting layer named: ' + node.get(inkex.addNS('label', 'inkscape')))
self.DoWePlotLayer( node.get( inkex.addNS( 'label', 'inkscape' ) ) )
self.recursivelyTraverseSvg( node, parent_visibility=v )
elif node.tag == inkex.addNS( 'use', 'svg' ) or node.tag == 'use':
# A <use> element refers to another SVG element via an xlink:href="#blah"
# attribute. We will handle the element by doing an XPath search through
# the document, looking for the element with the matching id="blah"
# attribute. We then recursively process that element after applying
# any necessary (x,y) translation.
#
# Notes:
# 1. We ignore the height and width attributes as they do not apply to
# path-like elements, and
# 2. Even if the use element has visibility="hidden", SVG still calls
# for processing the referenced element. The referenced element is
# hidden only if its visibility is "inherit" or "hidden".
refid = node.get( inkex.addNS( 'href', 'xlink' ) )
if refid:
# [1:] to ignore leading '#' in reference
path = '//*[@id="%s"]' % refid[1:]
refnode = node.xpath( path )
if refnode:
x = float( node.get( 'x', '0' ) )
y = float( node.get( 'y', '0' ) )
# Note: the transform has already been applied
if ( x != 0 ) or (y != 0 ):
transform = composeTransform( transform, parseTransform( 'translate(%f,%f)' % (x,y) ) )
v = node.get( 'visibility', v )
self.recursivelyTraverseSvg( refnode, parent_visibility=v, extra_transform=transform )
else:
pass
else:
pass
elif node.tag == inkex.addNS( 'path', 'svg' ):
if self.options.dashes:
splitPath(inkex, node)
self.pathcount += 1
# if we're in resume mode AND self.pathcount < self.svgLastPath,
# then skip over this path.
# if we're in resume mode and self.pathcount = self.svgLastPath,
# then start here, and set
# self.nodeCount equal to self.svgLastPathNC
if self.resumeMode and ( self.pathcount == self.svgLastPath ):
self.nodeCount = self.svgLastPathNC
if self.resumeMode and ( self.pathcount < self.svgLastPath ):
pass
else:
self.plotPath( node, transform )
if ( not self.bStopped ): #an "index" for resuming plots quickly-- record last complete path
self.svgLastPath += 1
self.svgLastPathNC = self.nodeCount
elif node.tag == inkex.addNS( 'rect', 'svg' ) or node.tag == 'rect':
# Manually transform
#
# <rect x="X" y="Y" width="W" height="H"/>
#
# into
#
# <path d="MX,Y lW,0 l0,H l-W,0 z"/>
#
# I.e., explicitly draw three sides of the rectangle and the
# fourth side implicitly
self.pathcount += 1
# if we're in resume mode AND self.pathcount < self.svgLastPath,
# then skip over this path.
# if we're in resume mode and self.pathcount = self.svgLastPath,
# then start here, and set
# self.nodeCount equal to self.svgLastPathNC
if self.resumeMode and ( self.pathcount == self.svgLastPath ):
self.nodeCount = self.svgLastPathNC
if self.resumeMode and ( self.pathcount < self.svgLastPath ):
pass
else:
# Create a path with the outline of the rectangle
newpath = inkex.etree.Element( inkex.addNS( 'path', 'svg' ) )
x = float( node.get( 'x' ) )
y = float( node.get( 'y' ) )
w = float( node.get( 'width' ) )
h = float( node.get( 'height' ) )
s = node.get( 'style' )
if s:
newpath.set( 'style', s )
t = node.get( 'transform' )
if t:
newpath.set( 'transform', t )
a = []
a.append( ['M ', [x, y]] )
a.append( [' l ', [w, 0]] )
a.append( [' l ', [0, h]] )
a.append( [' l ', [-w, 0]] )
a.append( [' Z', []] )
newpath.set( 'd', simplepath.formatPath( a ) )
self.plotPath( newpath, transform )
elif node.tag == inkex.addNS( 'line', 'svg' ) or node.tag == 'line':
# Convert
#
# <line x1="X1" y1="Y1" x2="X2" y2="Y2/>
#
# to
#
# <path d="MX1,Y1 LX2,Y2"/>
self.pathcount += 1
# if we're in resume mode AND self.pathcount < self.svgLastPath,
# then skip over this path.
# if we're in resume mode and self.pathcount = self.svgLastPath,
# then start here, and set
# self.nodeCount equal to self.svgLastPathNC
if self.resumeMode and ( self.pathcount == self.svgLastPath ):
self.nodeCount = self.svgLastPathNC
if self.resumeMode and ( self.pathcount < self.svgLastPath ):
pass
else:
# Create a path to contain the line
newpath = inkex.etree.Element( inkex.addNS( 'path', 'svg' ) )
x1 = float( node.get( 'x1' ) )
y1 = float( node.get( 'y1' ) )
x2 = float( node.get( 'x2' ) )
y2 = float( node.get( 'y2' ) )
s = node.get( 'style' )
if s:
newpath.set( 'style', s )
t = node.get( 'transform' )
if t:
newpath.set( 'transform', t )
a = []
a.append( ['M ', [x1, y1]] )
a.append( [' L ', [x2, y2]] )
newpath.set( 'd', simplepath.formatPath( a ) )
self.plotPath( newpath, transform )
if ( not self.bStopped ): #an "index" for resuming plots quickly-- record last complete path
self.svgLastPath += 1
self.svgLastPathNC = self.nodeCount
elif node.tag == inkex.addNS( 'polyline', 'svg' ) or node.tag == 'polyline':
# Convert
#
# <polyline points="x1,y1 x2,y2 x3,y3 [...]"/>
#
# to
#
# <path d="Mx1,y1 Lx2,y2 Lx3,y3 [...]"/>
#
# Note: we ignore polylines with no points
pl = node.get( 'points', '' ).strip()
if pl == '':
pass
self.pathcount += 1
#if we're in resume mode AND self.pathcount < self.svgLastPath, then skip over this path.
#if we're in resume mode and self.pathcount = self.svgLastPath, then start here, and set
# self.nodeCount equal to self.svgLastPathNC
if self.resumeMode and ( self.pathcount == self.svgLastPath ):
self.nodeCount = self.svgLastPathNC
if self.resumeMode and ( self.pathcount < self.svgLastPath ):
pass
else:
pa = pl.split()
if not len( pa ):
pass
# Issue 29: pre 2.5.? versions of Python do not have
# "statement-1 if expression-1 else statement-2"
# which came out of PEP 308, Conditional Expressions
#d = "".join( ["M " + pa[i] if i == 0 else " L " + pa[i] for i in range( 0, len( pa ) )] )
d = "M " + pa[0]
for i in range( 1, len( pa ) ):
d += " L " + pa[i]
newpath = inkex.etree.Element( inkex.addNS( 'path', 'svg' ) )
newpath.set( 'd', d );
s = node.get( 'style' )
if s:
newpath.set( 'style', s )
t = node.get( 'transform' )
if t:
newpath.set( 'transform', t )
self.plotPath( newpath, transform )
if ( not self.bStopped ): #an "index" for resuming plots quickly-- record last complete path
self.svgLastPath += 1
self.svgLastPathNC = self.nodeCount
elif node.tag == inkex.addNS( 'polygon', 'svg' ) or node.tag == 'polygon':
# Convert
#
# <polygon points="x1,y1 x2,y2 x3,y3 [...]"/>
#
# to
#
# <path d="Mx1,y1 Lx2,y2 Lx3,y3 [...] Z"/>
#
# Note: we ignore polygons with no points
pl = node.get( 'points', '' ).strip()
if pl == '':
pass
self.pathcount += 1
#if we're in resume mode AND self.pathcount < self.svgLastPath, then skip over this path.
#if we're in resume mode and self.pathcount = self.svgLastPath, then start here, and set
# self.nodeCount equal to self.svgLastPathNC
if self.resumeMode and ( self.pathcount == self.svgLastPath ):
self.nodeCount = self.svgLastPathNC
if self.resumeMode and ( self.pathcount < self.svgLastPath ):
pass
else:
pa = pl.split()
if not len( pa ):
pass
# Issue 29: pre 2.5.? versions of Python do not have
# "statement-1 if expression-1 else statement-2"
# which came out of PEP 308, Conditional Expressions
#d = "".join( ["M " + pa[i] if i == 0 else " L " + pa[i] for i in range( 0, len( pa ) )] )
d = "M " + pa[0]
for i in range( 1, len( pa ) ):
d += " L " + pa[i]
d += " Z"
newpath = inkex.etree.Element( inkex.addNS( 'path', 'svg' ) )
newpath.set( 'd', d );
s = node.get( 'style' )
if s:
newpath.set( 'style', s )
t = node.get( 'transform' )
if t:
newpath.set( 'transform', t )
self.plotPath( newpath, transform )
if ( not self.bStopped ): #an "index" for resuming plots quickly-- record last complete path
self.svgLastPath += 1
self.svgLastPathNC = self.nodeCount
elif node.tag == inkex.addNS( 'ellipse', 'svg' ) or \
node.tag == 'ellipse' or \
node.tag == inkex.addNS( 'circle', 'svg' ) or \
node.tag == 'circle':
# Convert circles and ellipses to a path with two 180 degree arcs.
# In general (an ellipse), we convert
#
# <ellipse rx="RX" ry="RY" cx="X" cy="Y"/>
#
# to
#
# <path d="MX1,CY A RX,RY 0 1 0 X2,CY A RX,RY 0 1 0 X1,CY"/>
#
# where
#
# X1 = CX - RX
# X2 = CX + RX
#
# Note: ellipses or circles with a radius attribute of value 0 are ignored
if node.tag == inkex.addNS( 'ellipse', 'svg' ) or node.tag == 'ellipse':
rx = float( node.get( 'rx', '0' ) )
ry = float( node.get( 'ry', '0' ) )
else:
rx = float( node.get( 'r', '0' ) )
ry = rx
if rx == 0 or ry == 0:
pass
self.pathcount += 1
#if we're in resume mode AND self.pathcount < self.svgLastPath, then skip over this path.
#if we're in resume mode and self.pathcount = self.svgLastPath, then start here, and set
# self.nodeCount equal to self.svgLastPathNC
if self.resumeMode and ( self.pathcount == self.svgLastPath ):
self.nodeCount = self.svgLastPathNC
if self.resumeMode and ( self.pathcount < self.svgLastPath ):
pass
else:
cx = float( node.get( 'cx', '0' ) )
cy = float( node.get( 'cy', '0' ) )
x1 = cx - rx
x2 = cx + rx
d = 'M %f,%f ' % ( x1, cy ) + \
'A %f,%f ' % ( rx, ry ) + \
'0 1 0 %f,%f ' % ( x2, cy ) + \
'A %f,%f ' % ( rx, ry ) + \
'0 1 0 %f,%f' % ( x1, cy )
newpath = inkex.etree.Element( inkex.addNS( 'path', 'svg' ) )
newpath.set( 'd', d );
s = node.get( 'style' )
if s:
newpath.set( 'style', s )
t = node.get( 'transform' )
if t:
newpath.set( 'transform', t )
self.plotPath( newpath, transform )
if ( not self.bStopped ): #an "index" for resuming plots quickly-- record last complete path
self.svgLastPath += 1
self.svgLastPathNC = self.nodeCount
elif node.tag == inkex.addNS( 'metadata', 'svg' ) or node.tag == 'metadata':
pass
elif node.tag == inkex.addNS( 'defs', 'svg' ) or node.tag == 'defs':
pass
elif node.tag == inkex.addNS( 'namedview', 'sodipodi' ) or node.tag == 'namedview':
pass
elif node.tag == inkex.addNS( 'eggbot', 'svg' ) or node.tag == 'eggbot':
pass
elif node.tag == inkex.addNS( 'title', 'svg' ) or node.tag == 'title':
pass
elif node.tag == inkex.addNS( 'desc', 'svg' ) or node.tag == 'desc':
pass
elif node.tag == inkex.addNS( 'text', 'svg' ) or node.tag == 'text':
texts = []
plaintext = ''
if self.plotCurrentLayer:
for tnode in node.iterfind('.//'): # all subtree
if tnode is not None and tnode.text is not None:
texts.append(tnode.text)
if len(texts):
plaintext = "', '".join(texts).encode('latin-1')
# encode_('latin-1') prevents 'ordinal not in range(128)' errors.
print >>self.tty, "Text ignored: '%s'" % (plaintext)
plaintext = "\n".join(texts)+"\n"
if not self.warnings.has_key( 'text' ) and self.plotCurrentLayer:
inkex.errormsg( plaintext + gettext.gettext( 'Warning: unable to draw text; ' +
'please convert it to a path first. Or consider using the ' +
'Hershey Text extension which can be installed in the '+
'"Render" category of extensions.' ) )
self.warnings['text'] = 1
pass
elif node.tag == inkex.addNS( 'image', 'svg' ) or node.tag == 'image':
if not self.warnings.has_key( 'image' ):
inkex.errormsg( gettext.gettext( 'Warning: unable to draw bitmap images; ' +
'please convert them to line art first. Consider using the "Trace bitmap..." ' +
'tool of the "Path" menu. Mac users please note that some X11 settings may ' +
'cause cut-and-paste operations to paste in bitmap copies.' ) )
self.warnings['image'] = 1
pass
elif node.tag == inkex.addNS( 'pattern', 'svg' ) or node.tag == 'pattern':
pass
elif node.tag == inkex.addNS( 'radialGradient', 'svg' ) or node.tag == 'radialGradient':
# Similar to pattern
pass
elif node.tag == inkex.addNS( 'linearGradient', 'svg' ) or node.tag == 'linearGradient':
# Similar in pattern
pass
elif node.tag == inkex.addNS( 'style', 'svg' ) or node.tag == 'style':
# This is a reference to an external style sheet and not the value
# of a style attribute to be inherited by child elements
pass
elif node.tag == inkex.addNS( 'cursor', 'svg' ) or node.tag == 'cursor':
pass
elif node.tag == inkex.addNS( 'flowRoot', 'svg' ) or node.tag == 'flowRoot':
# contains a <flowRegion><rect y="91" x="369" height="383" width="375" ...
# see examples/fablab_logo_stencil.svg
pass
elif node.tag == inkex.addNS( 'color-profile', 'svg' ) or node.tag == 'color-profile':
# Gamma curves, color temp, etc. are not relevant to single color output
pass
elif not isinstance( node.tag, basestring ):
# This is likely an XML processing instruction such as an XML
# comment. lxml uses a function reference for such node tags
# and as such the node tag is likely not a printable string.
# Further, converting it to a printable string likely won't
# be very useful.
pass
else:
if not self.warnings.has_key( str( node.tag ) ):
t = str( node.tag ).split( '}' )
inkex.errormsg( gettext.gettext( 'Warning: unable to draw <' + str( t[-1] ) +
'> object, please convert it to a path first.' ) )
self.warnings[str( node.tag )] = 1
pass
def getLength( self, name, default ):
'''
Get the <svg> attribute with name "name" and default value "default"
Parse the attribute into a value and associated units. Then, accept
no units (''), units of pixels ('px'), and units of percentage ('%').
'''
str = self.document.getroot().get( name )
# print >>self.tty, "getLength.str", str
if str:
v, u = parseLengthWithUnits( str )
# print >>self.tty, "parseLengthWithUnits: ", str, u, v
if not v:
# Couldn't parse the value
return None
elif ( u == '' ) or ( u == 'px' ):
return v
elif u == 'mm':
return v*90./25.4 # inverse of px2mm
elif u == 'in':
return v*90.
elif u == 'cm':
return v*90./2.54 # inverse of 10*px2mm
elif u == '%':
return float( default ) * v / 100.0
else:
print >>sys.stderr, "unknown unit ", u
print >>self.tty, "unknown unit ", u
return None
else:
# No width specified; assume the default value
return float( default )
def getDocProps( self ):
'''
Get the document's height and width attributes from the <svg> tag.
Use a default value in case the property is not present or is
expressed in units of percentages.
'''
self.docHeight = self.getLength( 'height', N_PAGE_HEIGHT )
print >>self.tty, "7 self.docHeight=", self.docHeight
self.docWidth = self.getLength( 'width', N_PAGE_WIDTH )
print >>self.tty, "8 self.docWidth=", self.docWidth
if ( self.docHeight == None ) or ( self.docWidth == None ):
return False
else:
return True
def handleViewBox( self ):
'''
Set up the document-wide transform in the event that the document has an SVG viewbox
'''
if self.getDocProps():
viewbox = self.document.getroot().get( 'viewBox' )
if viewbox:
vinfo = viewbox.strip().replace( ',', ' ' ).split( ' ' )
if ( vinfo[2] != 0 ) and ( vinfo[3] != 0 ):
sx = self.docWidth / float( vinfo[2] )
sy = self.docHeight / float( vinfo[3] )
self.docTransform = parseTransform( 'scale(%f,%f)' % (sx, sy) )
def is_closed_path(self, path):
return dist_sq(XY_a(path[0]), XY_a(path[-1])) < 0.01
def effect(self):
if self.options.version:
print __version__
sys.exit(0)
def write_progress(done, total, msg):
if not 'write_start_tstamp' in self.__dict__:
self.write_start_tstamp = time.time()
self.device_buffer_perc = 0.0
perc = 100.*done/total
if time.time() - self.write_start_tstamp < 1.0:
self.device_buffer_perc = perc
buf = ""
if self.device_buffer_perc > 1.0:
buf = " (+%d%%)" % (self.device_buffer_perc+.5)
self.tty.write("%d%%%s %s\r" % (perc-self.device_buffer_perc+.5, buf, msg))
self.tty.flush()
try:
dev = SilhouetteCameo(log=self.tty, progress_cb=write_progress, no_device=self.options.dummy)
except Exception as e:
print >>self.tty, e
print >>sys.stderr, e
return
state = dev.status() # hint at loading paper, if not ready.
print >>self.tty, "status=%s" % (state)
print >>self.tty, "device version: '%s'" % dev.get_version()
# Viewbox handling
self.handleViewBox()
# Build a list of the vertices for the document's graphical elements
if self.options.ids:
# Traverse the selected objects
for id in self.options.ids:
self.recursivelyTraverseSvg( [self.selected[id]] )
else:
# Traverse the entire document
self.recursivelyTraverseSvg( self.document.getroot() )
self.pen=None
if self.options.tool == 'pen': self.pen=True
if self.options.tool == 'cut': self.pen=False
if self.options.mat_free:
mf = MatFree('default', scale=px2mm(1.0), pen=self.pen)
mf.verbose = 0 # inkscape crashes whenever something appears in stdout.
self.paths = mf.apply(self.paths)