FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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Added units to offset paths + some tweaks/better default

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This commit is contained in:
Mario Voigt 2021-04-09 00:07:33 +02:00
parent 8b88223c61
commit 01b2b46411
2 changed files with 17 additions and 7 deletions
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8
extensions/fablabchemnitz/ofsplot.inx
View File

@ -2,6 +2,14 @@
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<name>Ofsplot (Offset Paths)</name>
<id>fablabchemnitz.de.ofsplot</id>
<param name="unit" type="optiongroup" appearance="combo" gui-text="Unit">
<option value="mm">mm</option>
<option value="cm">cm</option>
<option value="in">in</option>
<option value="pt">pt</option>
<option value="px">px</option>
<option value="pc">pc</option>
</param>
<param name="offset_count" type="int" min="1" max="100000" gui-text="Number of offset paths:">1</param>
<param name="offset" type="float" precision="4" min="-1000" max="+1000" gui-text="Offset between two paths:">1.0000</param>
<param name="init_offset" type="float" precision="4" min="-1000" max="+1000" gui-text="Initial offset from original path:">1.0000</param>

16
extensions/fablabchemnitz/ofsplot.py
View File

@ -9,6 +9,7 @@ import pyclipper
class ofsplot(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.arg_parser.add_argument('--unit')
self.arg_parser.add_argument("--offset_count", type=int, default=1, help="Number of offset paths")
self.arg_parser.add_argument("--offset", type=float, default=1.000, help="Offset amount")
self.arg_parser.add_argument("--init_offset", type=float, default=0.000, help="Initial Offset Amount")
@ -19,6 +20,7 @@ class ofsplot(inkex.Effect):
self.arg_parser.add_argument("--clipperscale", type=float, default=1024.0, help="Scaling factor")
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
@ -46,18 +48,18 @@ class ofsplot(inkex.Effect):
for sub in p:
sub_simple = []
for item in sub:
itemx = [float(z)*scale_factor for z in item[1]]
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)
offset_list.append(self.options.init_offset * unit_factor)
for i in range(0, self.options.offset_count):
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)
ofs_increase = +math.pow(float(i) * self.options.offset_increase * unit_factor, 2)
if self.options.offset_increase < 0:
ofs_increase = -ofs_increase
offset_list.append(offset_list[0] + float(i) * self.options.offset * unit_factor + ofs_increase * unit_factor)
solutions = []
for offset in offset_list:
@ -70,7 +72,7 @@ class ofsplot(inkex.Effect):
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 = [[a, a, a] for a in solx]
sol_p.append(sol_p[0][:])
new.append(sol_p)