add #86
This commit is contained in:
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68e1dd9ac4
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6f1d0d2003
@ -37,265 +37,272 @@ from optparse import SUPPRESS_HELP
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class ChainPaths(inkex.EffectExtension):
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def __init__(self):
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inkex.Effect.__init__(self)
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def __init__(self):
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inkex.Effect.__init__(self)
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# For handling an SVG viewbox attribute, we will need to know the
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# values of the document's <svg> width and height attributes as well
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# as establishing a transform from the viewbox to the display.
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self.chain_epsilon = 0.01
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self.snap_ends = True
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self.close_loops = True
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self.segments_done = {}
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self.min_missed_distance_sq = None
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self.chained_count = 0
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# For handling an SVG viewbox attribute, we will need to know the
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# values of the document's <svg> width and height attributes as well
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# as establishing a transform from the viewbox to the display.
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self.chain_epsilon = 0.01
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self.snap_ends = True
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self.close_loops = True
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self.segments_done = {}
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self.min_missed_distance_sq = None
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self.chained_count = 0
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self.arg_parser.add_argument('-V', '--version', type=inkex.Boolean, default=False, help = 'Just print version number ("' + __version__ + '") and exit.')
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self.arg_parser.add_argument('-s', '--snap_ends', type=inkex.Boolean, default=True, help='snap end-points together when connecting')
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self.arg_parser.add_argument('-c', '--close_loops', type=inkex.Boolean, default=True, help='close loops (start/end of the same path)')
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self.arg_parser.add_argument('-l', '--limit', type=int, default=2000, help='Maximum items to process')
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self.arg_parser.add_argument('-u', '--units', default="mm", help="measurement unit for epsilon")
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self.arg_parser.add_argument('-e', '--chain_epsilon', type=float, default=0.01, help="Max. distance to connect [mm]")
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self.arg_parser.add_argument('-d', '--debug', type=inkex.Boolean, default=False, help='Debug')
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self.arg_parser.add_argument('-V', '--version', type=inkex.Boolean, default=False, help = 'Just print version number ("' + __version__ + '") and exit.')
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self.arg_parser.add_argument('-s', '--snap_ends', type=inkex.Boolean, default=True, help='snap end-points together when connecting')
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self.arg_parser.add_argument('-c', '--close_loops', type=inkex.Boolean, default=True, help='close loops (start/end of the same path)')
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self.arg_parser.add_argument('-l', '--limit', type=int, default=2000, help='Maximum items to process')
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self.arg_parser.add_argument('-u', '--units', default="mm", help="measurement unit for epsilon")
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self.arg_parser.add_argument('-e', '--chain_epsilon', type=float, default=0.01, help="Max. distance to connect [mm]")
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self.arg_parser.add_argument('-d', '--debug', type=inkex.Boolean, default=False, help='Debug')
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def version(self):
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return __version__
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def author(self):
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return __author__
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def version(self):
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return __version__
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def author(self):
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return __author__
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def calc_unit_factor(self, units='mm'):
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""" return the scale factor for all dimension conversions.
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- The document units are always irrelevant as
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everything in inkscape is expected to be in 90dpi pixel units
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"""
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dialog_units = self.svg.unittouu(str(1.0)+units)
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self.unit_factor = 1.0 / dialog_units
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return self.unit_factor
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def calc_unit_factor(self, units='mm'):
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""" return the scale factor for all dimension conversions.
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- The document units are always irrelevant as
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everything in inkscape is expected to be in 90dpi pixel units
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"""
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dialog_units = self.svg.unittouu(str(1.0)+units)
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self.unit_factor = 1.0 / dialog_units
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return self.unit_factor
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def reverse_segment(self, seg):
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r = []
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for s in reversed(seg):
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# s has 3 elements: handle1, point, handle2
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# Swap handles.
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s.reverse()
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r.append(s)
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return r
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def reverse_segment(self, seg):
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r = []
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for s in reversed(seg):
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# s has 3 elements: handle1, point, handle2
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# Swap handles.
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s.reverse()
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r.append(s)
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return r
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def set_segment_done(self, so, id, n, msg=''):
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if not id in self.segments_done:
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self.segments_done[id] = {}
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self.segments_done[id][n] = True
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if so.debug: inkex.utils.debug("done {} {} {}".format(id, n, msg))
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def set_segment_done(self, so, id, n, msg=''):
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if not id in self.segments_done:
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self.segments_done[id] = {}
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self.segments_done[id][n] = True
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if so.debug: inkex.utils.debug("done {} {} {}".format(id, n, msg))
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def is_segment_done(self, id, n):
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if not id in self.segments_done:
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return False
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if n in self.segments_done[id]:
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return True
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return False
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def is_segment_done(self, id, n):
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if not id in self.segments_done:
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return False
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if n in self.segments_done[id]:
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return True
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return False
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def link_segments(self, seg1, seg2):
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if self.snap_ends:
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seg = seg1[:-1]
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p1 = seg1[-1]
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p2 = seg2[0]
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# fuse p1 and p2 to create one new point:
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# first handle from p1, point coordinates averaged, second handle from p2
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seg.append([ [ p1[0][0] , p1[0][1] ],
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[ (p1[1][0] + p2[1][0]) * .5, (p1[1][1] + p2[1][1]) * .5 ],
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[ p2[2][0] , p2[2][1] ] ])
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seg.extend(seg2[1:])
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else:
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seg = seg1[:]
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seg.extend(seg2[:])
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self.chained_count += 1
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return seg
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def link_segments(self, seg1, seg2):
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if self.snap_ends:
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seg = seg1[:-1]
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p1 = seg1[-1]
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p2 = seg2[0]
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# fuse p1 and p2 to create one new point:
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# first handle from p1, point coordinates averaged, second handle from p2
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seg.append([
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[ p1[0][0] , p1[0][1] ],
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[(p1[1][0] + p2[1][0]) * .5, (p1[1][1] + p2[1][1]) * .5],
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[ p2[2][0] , p2[2][1] ]
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])
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seg.extend(seg2[1:])
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else:
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seg = seg1[:]
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seg.extend(seg2[:])
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self.chained_count += 1
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return seg
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def near_ends(self, end1, end2):
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""" requires self.eps_sq to be the square of the near distance """
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dx = end1[0] - end2[0]
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dy = end1[1] - end2[1]
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d_sq = dx * dx + dy * dy
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if d_sq > self.eps_sq:
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if self.min_missed_distance_sq is None:
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self.min_missed_distance_sq = d_sq
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elif self.min_missed_distance_sq > d_sq:
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self.min_missed_distance_sq = d_sq
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return False
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else:
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return True
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def near_ends(self, end1, end2):
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""" requires self.eps_sq to be the square of the near distance """
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dx = end1[0] - end2[0]
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dy = end1[1] - end2[1]
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d_sq = dx * dx + dy * dy
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if d_sq > self.eps_sq:
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if self.min_missed_distance_sq is None:
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self.min_missed_distance_sq = d_sq
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elif self.min_missed_distance_sq > d_sq:
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self.min_missed_distance_sq = d_sq
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return False
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else:
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return True
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def effect(self):
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so = self.options
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def effect(self):
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so = self.options
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if so.version:
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print(__version__)
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sys.exit(0)
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if so.version:
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print(__version__)
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sys.exit(0)
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self.calc_unit_factor(so.units)
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self.calc_unit_factor(so.units)
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if so.snap_ends is not None: self.snap_ends = so.snap_ends
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if so.close_loops is not None: self.close_loops = so.close_loops
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if so.chain_epsilon is not None: self.chain_epsilon = so.chain_epsilon
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if self.chain_epsilon < 0.001: self.chain_epsilon = 0.001 # keep a minimum.
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self.eps_sq = self.chain_epsilon * self.unit_factor * self.chain_epsilon * self.unit_factor
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if so.snap_ends is not None: self.snap_ends = so.snap_ends
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if so.close_loops is not None: self.close_loops = so.close_loops
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if so.chain_epsilon is not None: self.chain_epsilon = so.chain_epsilon
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if self.chain_epsilon < 0.001: self.chain_epsilon = 0.001 # keep a minimum.
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self.eps_sq = self.chain_epsilon * self.unit_factor * self.chain_epsilon * self.unit_factor
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selected = self.svg.selected.items()
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selected = self.svg.selected.items()
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itemsCount = len(selected)
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if not itemsCount:
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inkex.errormsg("Please select one or more objects.")
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return
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itemsCount = len(selected)
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if not itemsCount:
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inkex.errormsg("Please select one or more objects.")
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return
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#selected = dict(reversed(list(selected))) #reverse
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if so.limit > 0 and itemsCount > so.limit:
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inkex.utils.debug("Maximum items to process is set to {}. You selected {} items. We continue with processing until limit is reached.".format(so.limit, itemsCount))
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#selected = dict(reversed(list(selected))) #reverse
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if so.limit > 0 and itemsCount > so.limit:
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inkex.utils.debug("Maximum items to process is set to {}. You selected {} items. We continue with processing until limit is reached.".format(so.limit, itemsCount))
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segments = []
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workedon = 0
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for id, node in selected:
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if node.tag != inkex.addNS('path', 'svg'):
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inkex.errormsg("Object id {} is not a path. Try\n - Path->Object to Path\n - Object->Ungroup".format(node.get('id')))
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return
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if so.debug: inkex.utils.debug("id={}, tag=".format(idnode.get('id'), node.tag))
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path_d = CubicSuperPath(Path(node.get('d')))
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sub_idx = -1
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for sub in path_d:
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sub_idx += 1
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# sub = [[[200.0, 300.0], [200.0, 300.0], [175.0, 290.0]], [[175.0, 265.0], [220.37694, 256.99876], [175.0, 240.0]], [[175.0, 215.0], [200.0, 200.0], [200.0, 200.0]]]
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# this is a path of three points. All the bezier handles are included. the Structure is:
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# [[handle0_OUT, point0, handle0_1], [handle1_0, point1, handle1_2], [handle2_1, point2, handle2_OUT]]
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# the _OUT handles at the end of the path are ignored. The data structure has them identical to their points.
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#
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if so.debug: inkex.utils.debug(" sub={}".format(sub))
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end1 = [sub[ 0][1][0], sub[ 0][1][1]]
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end2 = [sub[-1][1][0], sub[-1][1][1]]
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segments = []
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workedon = 0
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for id, node in selected:
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if node.tag != inkex.addNS('path', 'svg'):
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inkex.errormsg("Object id {} is not a path. Try\n - Path->Object to Path\n - Object->Ungroup".format(node.get('id')))
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return
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#check if node has a transform. If yes, print a warning
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if node.get('transform') is not None:
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inkex.utils.debug("Warning: node {} has transform {}. Use 'Apply Transforms' extension before to handle this.".format(node.get('id'), node.get('transform')))
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return
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# Remove trivial self reversal when building candidate segments list.
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if ((len(sub) == 3) and self.near_ends(end1, end2)):
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if so.debug: inkex.utils.debug("dropping segment from self-reversing path, length: {}".format(len(sub)))
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sub.pop()
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end2 = [sub[-1][1][0], sub[-1][1][1]]
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if so.debug: inkex.utils.debug("id={}, tag=".format(idnode.get('id'), node.tag))
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path_d = CubicSuperPath(Path(node.get('d')))
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sub_idx = -1
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for sub in path_d:
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sub_idx += 1
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# sub = [[[200.0, 300.0], [200.0, 300.0], [175.0, 290.0]], [[175.0, 265.0], [220.37694, 256.99876], [175.0, 240.0]], [[175.0, 215.0], [200.0, 200.0], [200.0, 200.0]]]
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# this is a path of three points. All the bezier handles are included. the Structure is:
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# [[handle0_OUT, point0, handle0_1], [handle1_0, point1, handle1_2], [handle2_1, point2, handle2_OUT]]
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# the _OUT handles at the end of the path are ignored. The data structure has them identical to their points.
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#
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if so.debug: inkex.utils.debug(" sub={}".format(sub))
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end1 = [sub[ 0][1][0], sub[ 0][1][1]]
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end2 = [sub[-1][1][0], sub[-1][1][1]]
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segments.append({'id': id, 'n': sub_idx, 'end1': end1, 'end2':end2, 'seg': sub})
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if node.get(inkex.addNS('type', 'sodipodi')):
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del node.attrib[inkex.addNS('type', 'sodipodi')]
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workedon += 1
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if workedon >= so.limit and so.limit > 0:
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break
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# Remove trivial self reversal when building candidate segments list.
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if ((len(sub) == 3) and self.near_ends(end1, end2)):
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if so.debug: inkex.utils.debug("dropping segment from self-reversing path, length: {}".format(len(sub)))
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sub.pop()
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end2 = [sub[-1][1][0], sub[-1][1][1]]
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if so.debug: inkex.utils.debug("-------- seen: ")
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for s in segments:
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if so.debug: inkex.utils.debug("{}, {}, {}, {}".format(s['id'], s['n'], s['end1'], s['end2']))
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segments.append({'id': id, 'n': sub_idx, 'end1': end1, 'end2':end2, 'seg': sub})
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if node.get(inkex.addNS('type', 'sodipodi')):
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del node.attrib[inkex.addNS('type', 'sodipodi')]
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workedon += 1
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if workedon >= so.limit and so.limit > 0:
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break
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# chain the segments
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obsoleted = 0
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remaining = 0
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if so.debug: inkex.utils.debug("-------- seen: ")
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for s in segments:
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if so.debug: inkex.utils.debug("{}, {}, {}, {}".format(s['id'], s['n'], s['end1'], s['end2']))
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workedon = 0
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for id, node in selected:
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path_d = CubicSuperPath(Path(node.get('d')))
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# ATTENTION: for parsePath() it is the same, if first and last point coincide, or if the path is really closed.
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path_closed = True if re.search(r'z\s*$', node.get('d')) else False
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new = []
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cur_idx = -1
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for chain in path_d:
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cur_idx += 1
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if not self.is_segment_done(id, cur_idx):
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# quadratic algorithm: we check both ends of the current segment.
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# If one of them is near another known end from the segments list, we
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# chain this segment to the current segment and remove it from the
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# list,
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# end1-end1 or end2-end2: The new segment is reversed.
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# end1-end2: The new segment is prepended to the current segment.
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# end2-end1: The new segment is appended to the current segment.
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self.set_segment_done(so, id, cur_idx, "output") # do not cross with ourselves.
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end1 = [chain[ 0][1][0], chain[ 0][1][1]]
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end2 = [chain[-1][1][0], chain[-1][1][1]]
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# chain the segments
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obsoleted = 0
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remaining = 0
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# Remove trivial self revesal when doing the actual chain operation.
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if ((len(chain) == 3) and self.near_ends(end1, end2)):
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chain.pop()
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end2 = [chain[-1][1][0], chain[-1][1][1]]
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workedon = 0
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for id, node in selected:
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path_d = CubicSuperPath(Path(node.get('d')))
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# ATTENTION: for parsePath() it is the same, if first and last point coincide, or if the path is really closed.
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path_closed = True if re.search(r'z\s*$', node.get('d')) else False
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new = []
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cur_idx = -1
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for chain in path_d:
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cur_idx += 1
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if not self.is_segment_done(id, cur_idx):
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# quadratic algorithm: we check both ends of the current segment.
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# If one of them is near another known end from the segments list, we
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# chain this segment to the current segment and remove it from the
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# list,
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# end1-end1 or end2-end2: The new segment is reversed.
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# end1-end2: The new segment is prepended to the current segment.
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# end2-end1: The new segment is appended to the current segment.
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self.set_segment_done(so, id, cur_idx, "output") # do not cross with ourselves.
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end1 = [chain[ 0][1][0], chain[ 0][1][1]]
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end2 = [chain[-1][1][0], chain[-1][1][1]]
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segments_idx = 0
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while segments_idx < len(segments):
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seg = segments[segments_idx]
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if self.is_segment_done(seg['id'], seg['n']):
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segments_idx += 1
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continue
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# Remove trivial self revesal when doing the actual chain operation.
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if ((len(chain) == 3) and self.near_ends(end1, end2)):
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chain.pop()
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end2 = [chain[-1][1][0], chain[-1][1][1]]
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if (self.near_ends(end1, seg['end1']) or
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self.near_ends(end2, seg['end2'])):
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seg['seg'] = self.reverse_segment(seg['seg'])
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seg['end1'], seg['end2'] = seg['end2'], seg['end1']
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if so.debug: inkex.utils.debug("reversed seg {}, {}".format(seg['id'], seg['n']))
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segments_idx = 0
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while segments_idx < len(segments):
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seg = segments[segments_idx]
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if self.is_segment_done(seg['id'], seg['n']):
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segments_idx += 1
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continue
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if self.near_ends(end1, seg['end2']):
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# prepend seg to chain
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self.set_segment_done(so, seg['id'], seg['n'], 'prepended to {} {}'.format(id, cur_idx))
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chain = self.link_segments(seg['seg'], chain)
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end1 = [chain[0][1][0], chain[0][1][1]]
|
||||
segments_idx = 0 # this chain changed. re-visit all candidate
|
||||
continue
|
||||
if (self.near_ends(end1, seg['end1']) or
|
||||
self.near_ends(end2, seg['end2'])):
|
||||
seg['seg'] = self.reverse_segment(seg['seg'])
|
||||
seg['end1'], seg['end2'] = seg['end2'], seg['end1']
|
||||
if so.debug: inkex.utils.debug("reversed seg {}, {}".format(seg['id'], seg['n']))
|
||||
|
||||
if self.near_ends(end2, seg['end1']):
|
||||
# append seg to chain
|
||||
self.set_segment_done(so, seg['id'], seg['n'], 'appended to {} {}'.format(id, cur_idx))
|
||||
chain = self.link_segments(chain, seg['seg'])
|
||||
end2 = [chain[-1][1][0], chain[-1][1][1]]
|
||||
segments_idx = 0 # this chain changed. re-visit all candidate
|
||||
continue
|
||||
if self.near_ends(end1, seg['end2']):
|
||||
# prepend seg to chain
|
||||
self.set_segment_done(so, seg['id'], seg['n'], 'prepended to {} {}'.format(id, cur_idx))
|
||||
chain = self.link_segments(seg['seg'], chain)
|
||||
end1 = [chain[0][1][0], chain[0][1][1]]
|
||||
segments_idx = 0 # this chain changed. re-visit all candidate
|
||||
continue
|
||||
|
||||
segments_idx += 1
|
||||
if self.near_ends(end2, seg['end1']):
|
||||
# append seg to chain
|
||||
self.set_segment_done(so, seg['id'], seg['n'], 'appended to {} {}'.format(id, cur_idx))
|
||||
chain = self.link_segments(chain, seg['seg'])
|
||||
end2 = [chain[-1][1][0], chain[-1][1][1]]
|
||||
segments_idx = 0 # this chain changed. re-visit all candidate
|
||||
continue
|
||||
|
||||
# Now all joinable segments are joined.
|
||||
# Finally, we can check, if the resulting path is a closed path:
|
||||
# Closing a path here, isolates it from the rest.
|
||||
# But as we prefer to make the chain as long as possible, we close late.
|
||||
if self.near_ends(end1, end2) and not path_closed and self.close_loops:
|
||||
if so.debug: inkex.utils.debug("closing closeable loop {}".format(id))
|
||||
if self.snap_ends:
|
||||
# move first point to mid position
|
||||
x1n = (chain[0][1][0] + chain[-1][1][0]) * 0.5
|
||||
y1n = (chain[0][1][1] + chain[-1][1][1]) * 0.5
|
||||
chain[0][1][0], chain[0][1][1] = x1n, y1n
|
||||
# merge handle of the last point to the handle of the first point
|
||||
dx0e = chain[-1][0][0] - chain[-1][1][0]
|
||||
dy0e = chain[-1][0][1] - chain[-1][1][1]
|
||||
if so.debug: inkex.utils.debug("handle diff: {} {}".format(dx0e, dy0e))
|
||||
# FIXME: this does not work. cubicsuperpath.formatPath() ignores this handle.
|
||||
chain[0][0][0], chain[0][0][1] = x1n+dx0e, y1n+dy0e
|
||||
# drop last point
|
||||
chain.pop()
|
||||
end2 = [chain[-1][1][0], chain[-1][1][1]]
|
||||
path_closed = True
|
||||
self.chained_count +=1
|
||||
segments_idx += 1
|
||||
|
||||
new.append(chain)
|
||||
# Now all joinable segments are joined.
|
||||
# Finally, we can check, if the resulting path is a closed path:
|
||||
# Closing a path here, isolates it from the rest.
|
||||
# But as we prefer to make the chain as long as possible, we close late.
|
||||
if self.near_ends(end1, end2) and not path_closed and self.close_loops:
|
||||
if so.debug: inkex.utils.debug("closing closeable loop {}".format(id))
|
||||
if self.snap_ends:
|
||||
# move first point to mid position
|
||||
x1n = (chain[0][1][0] + chain[-1][1][0]) * 0.5
|
||||
y1n = (chain[0][1][1] + chain[-1][1][1]) * 0.5
|
||||
chain[0][1][0], chain[0][1][1] = x1n, y1n
|
||||
# merge handle of the last point to the handle of the first point
|
||||
dx0e = chain[-1][0][0] - chain[-1][1][0]
|
||||
dy0e = chain[-1][0][1] - chain[-1][1][1]
|
||||
if so.debug: inkex.utils.debug("handle diff: {} {}".format(dx0e, dy0e))
|
||||
# FIXME: this does not work. cubicsuperpath.formatPath() ignores this handle.
|
||||
chain[0][0][0], chain[0][0][1] = x1n+dx0e, y1n+dy0e
|
||||
# drop last point
|
||||
chain.pop()
|
||||
end2 = [chain[-1][1][0], chain[-1][1][1]]
|
||||
path_closed = True
|
||||
self.chained_count +=1
|
||||
|
||||
if not len(new):
|
||||
# node.clear()
|
||||
if node.getparent() is not None:
|
||||
node.delete()
|
||||
obsoleted += 1
|
||||
if so.debug: inkex.utils.debug("Path node obsoleted: {}".format(id))
|
||||
else:
|
||||
remaining += 1
|
||||
# BUG: All previously closed loops are open after we convert them back with cubicsuperpath.formatPath()
|
||||
p_fmt = str(Path(CubicSuperPath(new).to_path().to_arrays()))
|
||||
if path_closed: p_fmt += " z"
|
||||
if so.debug: inkex.utils.debug("new path: {}".format(p_fmt))
|
||||
node.set('d', p_fmt)
|
||||
workedon += 1
|
||||
if workedon >= so.limit and so.limit > 0:
|
||||
break
|
||||
new.append(chain)
|
||||
|
||||
# statistics:
|
||||
if so.debug: inkex.utils.debug("Path nodes obsoleted: {}\nPath nodes remaining: {}".format(obsoleted, remaining))
|
||||
if self.min_missed_distance_sq is not None:
|
||||
if so.debug: inkex.utils.debug("min_missed_distance: {} > {}".format(math.sqrt(float(self.min_missed_distance_sq))/self.unit_factor, self.chain_epsilon)+str(so.units))
|
||||
if so.debug: inkex.utils.debug("Successful link operations: {}".format(self.chained_count))
|
||||
if not len(new):
|
||||
# node.clear()
|
||||
if node.getparent() is not None:
|
||||
node.delete()
|
||||
obsoleted += 1
|
||||
if so.debug: inkex.utils.debug("Path node obsoleted: {}".format(id))
|
||||
else:
|
||||
remaining += 1
|
||||
# BUG: All previously closed loops are open after we convert them back with cubicsuperpath.formatPath()
|
||||
p_fmt = str(Path(CubicSuperPath(new).to_path().to_arrays()))
|
||||
if path_closed: p_fmt += " z"
|
||||
if so.debug: inkex.utils.debug("new path: {}".format(p_fmt))
|
||||
node.set('d', p_fmt)
|
||||
workedon += 1
|
||||
if workedon >= so.limit and so.limit > 0:
|
||||
break
|
||||
|
||||
# statistics:
|
||||
if so.debug: inkex.utils.debug("Path nodes obsoleted: {}\nPath nodes remaining: {}".format(obsoleted, remaining))
|
||||
if self.min_missed_distance_sq is not None:
|
||||
if so.debug: inkex.utils.debug("min_missed_distance: {} > {}".format(math.sqrt(float(self.min_missed_distance_sq))/self.unit_factor, self.chain_epsilon)+str(so.units))
|
||||
if so.debug: inkex.utils.debug("Successful link operations: {}".format(self.chained_count))
|
||||
|
||||
if __name__ == '__main__':
|
||||
ChainPaths().run()
|
||||
ChainPaths().run()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user