FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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more options to handle offset paths

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This commit is contained in:
Mario Voigt 2021-06-10 00:31:53 +02:00
parent 50f891d9ba
commit 2071c0227f
2 changed files with 82 additions and 64 deletions
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2
extensions/fablabchemnitz/offset_paths/offset_paths.inx
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@ -31,6 +31,8 @@
<option value="4">Open Round</option>
</param>
<param name="copy_org" type="bool" gui-text="Keep original path" gui-description="If enabled, keeps original path as a copy">false</param>
<param name="individual" type="bool" gui-text="Separate into individual paths" gui-description="If enabled, each offset curve will be an individual svg element">false</param>
</page>
<page name="tab_about" gui-text="About">
<label appearance="header">Offset Paths</label>

50
extensions/fablabchemnitz/offset_paths/offset_paths.py
View File

@ -15,6 +15,7 @@ import inkex
import math
from inkex.paths import CubicSuperPath
import re
import copy
import pyclipper
class OffsetPaths(inkex.EffectExtension):
@ -25,24 +26,26 @@ class OffsetPaths(inkex.EffectExtension):
pars.add_argument("--offset_count", type=int, default=1, help="Number of offset paths")
pars.add_argument("--offset", type=float, default=1.000, help="Offset amount")
pars.add_argument("--init_offset", type=float, default=0.000, help="Initial Offset Amount")
pars.add_argument("--copy_org", type=inkex.Boolean, default=True, help="copy original path")
pars.add_argument("--offset_increase", type=float, default=0.000, help="Offset increase between iterations")
pars.add_argument("--jointype", default="2", help="Join type")
pars.add_argument("--endtype", default="3", help="End type")
pars.add_argument("--miterlimit", type=float, default=3.0, help="Miter limit")
pars.add_argument("--clipperscale", type=int, default=1024, help="Scaling factor. Should be a multiplicator of 2, like 2^4=16 or 2^10=1024. The higher the scale factor the higher the quality.")
pars.add_argument("--copy_org", type=inkex.Boolean, default=True, help="copy original path")
pars.add_argument("--individual", type=inkex.Boolean, default=True, help="Separate into individual paths")
def effect(self):
unit_factor = 1.0 / self.svg.uutounit(1.0, self.options.unit)
paths = self.svg.selection.filter(inkex.PathElement).values()
count = sum(1 for path in paths)
paths = self.svg.selection.filter(inkex.PathElement).values() #we need to call this twice because the sum function consumes the generator
pathElements = self.svg.selection.filter(inkex.PathElement).values()
count = sum(1 for pathElement in pathElements)
pathElements = self.svg.selection.filter(inkex.PathElement).values() #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'))
for pathElement in pathElements:
csp = CubicSuperPath(pathElement.get('d'))
scale_factor = self.options.clipperscale # 2 ** 32 = 1024 - see also https://github.com/fonttools/pyclipper/wiki/Deprecating-SCALING_FACTOR
@ -68,12 +71,12 @@ class OffsetPaths(inkex.EffectExtension):
elif self.options.endtype == "4":
ET = pyclipper.ET_OPENROUND
new = []
newPaths = []
# load in initial paths
for sub in p:
for subPath in csp:
sub_simple = []
for item in sub:
for item in subPath:
itemx = [float(z) * scale_factor for z in item[1]]
sub_simple.append(itemx)
pco.AddPath(sub_simple, JT, ET)
@ -100,14 +103,27 @@ class OffsetPaths(inkex.EffectExtension):
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)
if sol_p not in newPaths:
newPaths.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 self.options.individual is True:
parent = pathElement.getparent()
idx = parent.index(pathElement)
idSuffix = 0
for newPath in newPaths:
copyElement = copy.copy(pathElement)
elementId = copyElement.get('id')
copyElement.path = CubicSuperPath(newPath)
copyElement.set('id', elementId + str(idSuffix))
parent.insert(idx, copyElement)
idSuffix += 1
if self.options.copy_org is False:
pathElement.delete()
else:
if self.options.copy_org is True:
for subPath in csp:
newPaths.append(subPath)
pathElement.set('d', CubicSuperPath(newPaths))
if __name__ == '__main__':
OffsetPaths().run()