added grouping to offset paths and path type option

This commit is contained in:
Mario Voigt 2021-06-10 20:18:37 +02:00
parent 2071c0227f
commit 908a389eea
2 changed files with 34 additions and 10 deletions

View File

@ -32,7 +32,11 @@
</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>
<param name="path_types" type="optiongroup" appearance="combo" gui-text="Path types to apply" gui-description="Process open, closed or all paths!">
<option value="both">all paths</option>
<option value="open_paths">open paths</option>
<option value="closed_paths">closed paths</option>
</param>
</page>
<page name="tab_about" gui-text="About">
<label appearance="header">Offset Paths</label>

View File

@ -4,9 +4,13 @@
Based on
- https://github.com/TimeTravel-0/ofsplot
ToDo's
- break apart combined paths
- option to handle groups
Author: Mario Voigt / FabLab Chemnitz
Mail: mario.voigt@stadtfabrikanten.org
Last Patch: 22.04.2021
Last Patch: 10.06.2021
License: GNU GPL v3
"""
@ -33,7 +37,7 @@ class OffsetPaths(inkex.EffectExtension):
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")
pars.add_argument("--path_types", default="both", help="Process open, closed or all paths!")
def effect(self):
@ -47,11 +51,25 @@ class OffsetPaths(inkex.EffectExtension):
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
'''
check for closed or open paths
'''
isClosed = False
raw = pathElement.path.to_arrays()
if raw[-1][0] == 'Z' or \
(raw[-1][0] == 'L' and raw[0][1] == raw[-1][1]) or \
(raw[-1][0] == 'C' and raw[0][1] == [raw[-1][1][-2], raw[-1][1][-1]]) \
: #if first is last point the path is also closed. The "Z" command is not required
isClosed = True
if self.options.path_types == "open_paths" and isClosed is True:
continue #skip this loop iteration
elif self.options.path_types == "closed_paths" and isClosed is False:
continue #skip this loop iteration
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 = None
JT = None #join types
if self.options.jointype == "0":
JT = pyclipper.JT_SQUARE
elif self.options.jointype == "1":
@ -59,7 +77,7 @@ class OffsetPaths(inkex.EffectExtension):
elif self.options.jointype == "2":
JT = pyclipper.JT_MITER
ET = None
ET = None #end types
if self.options.endtype == "0":
ET = pyclipper.ET_CLOSEDPOLYGON
elif self.options.endtype == "1":
@ -94,7 +112,7 @@ class OffsetPaths(inkex.EffectExtension):
for offset in offset_list:
solution = pco.Execute(offset * scale_factor)
solutions.append(solution)
if len(solution)<=0:
if len(solution) <= 0:
continue # no more loops to go, will provide no results.
# re-arrange solutions to fit expected format & add to array
@ -107,16 +125,18 @@ class OffsetPaths(inkex.EffectExtension):
newPaths.append(sol_p)
if self.options.individual is True:
parentGroup = pathElement.getparent().add(inkex.Group(id="g-offset-{}".format(pathElement.attrib["id"])))
parent = pathElement.getparent()
idx = parent.index(pathElement)
idx = parent.index(pathElement) + 1
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)
parentGroup.append(copyElement)
idSuffix += 1
parent.insert(idx, parentGroup)
if self.options.copy_org is False:
pathElement.delete()
else: