112 lines
3.8 KiB
Python
112 lines
3.8 KiB
Python
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#!/usr/bin/env python
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from __future__ import print_function
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import inkex
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import cubicsuperpath, simplestyle, copy, math, re, bezmisc, simplepath
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import pyclipper
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import sys
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def eprint(*args, **kwargs):
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print(*args, file=sys.stderr, **kwargs)
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class ofsplot(inkex.Effect):
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def __init__(self):
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inkex.Effect.__init__(self)
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self.OptionParser.add_option("--count",
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action="store", type="int",
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dest="count", default=10,
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help="Number of offset operations")
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self.OptionParser.add_option("--ofs",
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action="store", type="float",
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dest="offset", default=2,
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help="Offset amount")
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self.OptionParser.add_option("--init_ofs",
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action="store", type="float",
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dest="init_offset", default=2,
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help="Initial Offset Amount")
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self.OptionParser.add_option("--copy_org",
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action="store", type="inkbool",
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dest="copy_org", default=True,
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help="copy original path")
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self.OptionParser.add_option("--ofs_incr",
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action="store", type="float",
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dest="offset_increase", default=2,
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help="Offset increase between iterations")
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def effect(self):
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for id, node in self.selected.iteritems():
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if node.tag == inkex.addNS('path','svg'):
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p = cubicsuperpath.parsePath(node.get('d'))
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scale_factor=5.0
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pco = pyclipper.PyclipperOffset()
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new = []
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# load in initial paths
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for sub in p:
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sub_simple = []
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h1_simple = []
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h2_simple = []
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for item in sub:
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itemx = [float(z)*scale_factor for z in item[1]]
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sub_simple.append(itemx)
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#eprint(itemx)
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#h1_simple.append(item[0]-item[1]) # handle 1 offset
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#h2_simple.append(item[2]-item[1]) # handle 2 offset
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pco.AddPath(sub_simple, pyclipper.JT_ROUND, pyclipper.ET_CLOSEDPOLYGON)
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# calculate offset paths for different offset amounts
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offset_list = []
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offset_list.append(self.options.init_offset)
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for i in range(0,self.options.count+1):
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ofs_inc = +math.pow(float(i)*self.options.offset_increase,2)
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if self.options.offset_increase <0:
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ofs_inc = -ofs_inc
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offset_list.append(offset_list[0]+float(i)*self.options.offset+ofs_inc)
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solutions = []
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for offset in offset_list:
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solution = pco.Execute(offset*scale_factor)
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solutions.append(solution)
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if len(solution)<=0:
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continue # no more loops to go, will provide no results.
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# re-arrange solutions to fit expected format & add to array
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for solution in solutions:
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for sol in solution:
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solx = [[float(s[0])/scale_factor, float(s[1])/scale_factor] for s in sol]
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sol_p = [[a,a,a] for a in solx]
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sol_p.append(sol_p[0][:])
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new.append(sol_p)
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# add old, just to keep (make optional!)
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if self.options.copy_org:
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for sub in p:
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new.append(sub)
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node.set('d',cubicsuperpath.formatPath(new))
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if __name__ == '__main__':
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e = ofsplot()
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e.affect()
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