Mario Voigt
4175b377bd
's/fablabchemnitz_//g' *.inx;sed -i 's/>fablabchemnitz_/>/g' *.inx;sed -i 's/fablabchemnitz_//g' *.py; rename 's/fablabchemnitz_//g' *.svg"
86 lines
3.9 KiB
Python
86 lines
3.9 KiB
Python
#!/usr/bin/env python3
|
|
|
|
import inkex
|
|
import math
|
|
from inkex.paths import CubicSuperPath
|
|
import re
|
|
import pyclipper
|
|
|
|
class ofsplot(inkex.Effect):
|
|
def __init__(self):
|
|
inkex.Effect.__init__(self)
|
|
self.arg_parser.add_argument("--count", type=int, default=10, help="Number of offset operations")
|
|
self.arg_parser.add_argument("--offset", type=float, default=2.0, help="Offset amount")
|
|
self.arg_parser.add_argument("--init_offset", type=float, default=2.0, help="Initial Offset Amount")
|
|
self.arg_parser.add_argument("--copy_org", type=inkex.Boolean, default=True, help="copy original path")
|
|
self.arg_parser.add_argument("--offset_increase", type=float, default=2.0, help="Offset increase between iterations")
|
|
self.arg_parser.add_argument("--jointype", default="2", help="Join type")
|
|
self.arg_parser.add_argument("--miterlimit", type=float, default=3.0, help="Miter limit")
|
|
self.arg_parser.add_argument("--clipperscale", type=float, default=1024.0, help="Scaling factor")
|
|
|
|
def effect(self):
|
|
paths = self.svg.get_selected(inkex.PathElement)
|
|
count = sum(1 for path in paths)
|
|
paths = self.svg.get_selected(inkex.PathElement) #we need to call this twice because the sum function consumes the generator
|
|
if count == 0:
|
|
inkex.errormsg("No paths selected.")
|
|
exit()
|
|
for path in paths:
|
|
if path.tag == inkex.addNS('path','svg'):
|
|
p = CubicSuperPath(path.get('d'))
|
|
|
|
scale_factor = self.options.clipperscale # 2 ** 32 = 1024 - see also https://github.com/fonttools/pyclipper/wiki/Deprecating-SCALING_FACTOR
|
|
|
|
pco = pyclipper.PyclipperOffset(self.options.miterlimit)
|
|
|
|
JT = pyclipper.JT_MITER
|
|
if self.options.jointype == "0":
|
|
JT = pyclipper.JT_SQUARE
|
|
elif self.options.jointype == "1":
|
|
JT = pyclipper.JT_ROUND
|
|
elif self.options.jointype == "2":
|
|
JT = pyclipper.JT_MITER
|
|
new = []
|
|
|
|
# load in initial paths
|
|
for sub in p:
|
|
sub_simple = []
|
|
for item in sub:
|
|
itemx = [float(z)*scale_factor for z in item[1]]
|
|
sub_simple.append(itemx)
|
|
pco.AddPath(sub_simple, JT, pyclipper.ET_CLOSEDPOLYGON)
|
|
|
|
# calculate offset paths for different offset amounts
|
|
offset_list = []
|
|
offset_list.append(self.options.init_offset)
|
|
for i in range(0,self.options.count+1):
|
|
ofs_inc = +math.pow(float(i)*self.options.offset_increase,2)
|
|
if self.options.offset_increase <0:
|
|
ofs_inc = -ofs_inc
|
|
offset_list.append(offset_list[0]+float(i)*self.options.offset+ofs_inc)
|
|
|
|
solutions = []
|
|
for offset in offset_list:
|
|
solution = pco.Execute(offset * scale_factor)
|
|
solutions.append(solution)
|
|
if len(solution)<=0:
|
|
continue # no more loops to go, will provide no results.
|
|
|
|
# re-arrange solutions to fit expected format & add to array
|
|
for solution in solutions:
|
|
for sol in solution:
|
|
solx = [[float(s[0]) / scale_factor, float(s[1]) / scale_factor] for s in sol]
|
|
sol_p = [[a,a,a] for a in solx]
|
|
sol_p.append(sol_p[0][:])
|
|
new.append(sol_p)
|
|
|
|
# add old, just to keep (make optional!)
|
|
if self.options.copy_org:
|
|
for sub in p:
|
|
new.append(sub)
|
|
|
|
path.set('d',CubicSuperPath(new))
|
|
|
|
if __name__ == '__main__':
|
|
ofsplot().run()
|