FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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added more options to split and break bezier at t extension

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This commit is contained in:
Mario Voigt 2021-06-03 01:50:18 +02:00
parent e1daf4c934
commit efa6cca11c
2 changed files with 49 additions and 12 deletions
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3
extensions/fablabchemnitz/split_and_break_bezier_at_t/split_and_break_bezier_at_t.inx
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@ -19,6 +19,9 @@
</param> </param>
<param name="target_length" type="float" min="0.0" precision="4" gui-text="Length">0.5000</param> <param name="target_length" type="float" min="0.0" precision="4" gui-text="Length">0.5000</param>
<param name="target_t" type="float" min="0.0000" max="1.0000" precision="4" appearance="full" gui-text="t">0.5000</param> <param name="target_t" type="float" min="0.0000" max="1.0000" precision="4" appearance="full" gui-text="t">0.5000</param>
<param name="keep_start" type="bool" gui-text="Keep start">true</param>
<param name="keep_end" type="bool" gui-text="Keep end">true</param>
<param name="keep_seg" type="bool" gui-text="Keep only segment where trim applies">false</param>
</page> </page>
<page name="tab_about" gui-text="About"> <page name="tab_about" gui-text="About">
<label appearance="header">Split And Break Bezier At t</label> <label appearance="header">Split And Break Bezier At t</label>

34
extensions/fablabchemnitz/split_and_break_bezier_at_t/split_and_break_bezier_at_t.py
View File

@ -57,6 +57,9 @@ class SplitAndBreakBezierAtT(inkex.EffectExtension):
pars.add_argument('--unit', default="mm") pars.add_argument('--unit', default="mm")
pars.add_argument('--target_length', type=float, default=0.5) pars.add_argument('--target_length', type=float, default=0.5)
pars.add_argument('--target_t', type=float, default=0.5) pars.add_argument('--target_t', type=float, default=0.5)
pars.add_argument('--keep_start', type=inkex.Boolean, default=True)
pars.add_argument('--keep_end', type=inkex.Boolean, default=True)
pars.add_argument('--keep_seg', type=inkex.Boolean, default=False)
def effect(self): def effect(self):
breakApartElements = None breakApartElements = None
@ -80,11 +83,13 @@ class SplitAndBreakBezierAtT(inkex.EffectExtension):
self.options.target_t = length_at_target_t / totalLength #override self.options.target_t = length_at_target_t / totalLength #override
new = [] new = []
keep = [] #some copy for the segment where the split applies
lengthSum = 0 lengthSum = 0
segOfTOccurence = None segOfTOccurence = None
for seg in csp: for seg in csp:
new.append([seg[0][:]]) new.append([seg[0][:]])
for i in range(1,len(seg)): for i in range(1,len(seg)):
aSeg = seg[i][0]
segLength = bezier.cspseglength(new[-1][-1], seg[i]) segLength = bezier.cspseglength(new[-1][-1], seg[i])
lengthSum += segLength lengthSum += segLength
current_t = lengthSum / totalLength current_t = lengthSum / totalLength
@ -97,13 +102,42 @@ class SplitAndBreakBezierAtT(inkex.EffectExtension):
better_result = [[list(el) for el in elements] for elements in result] better_result = [[list(el) for el in elements] for elements in result]
new[-1][-1], nxt, seg[i] = better_result new[-1][-1], nxt, seg[i] = better_result
new[-1].append(nxt[:]) new[-1].append(nxt[:])
if self.options.keep_start is True and self.options.keep_end is False:
if segOfTOccurence == 1:
keep.append([seg[i-1][0], seg[i-1][0], seg[i-1][0]])
else:
keep.append([seg[i-1][1], seg[i-1][1], seg[i-1][1]])
keep.append([better_result[0][2], nxt[0], nxt[1]])
elif self.options.keep_start is False and self.options.keep_end is True:
keep.append([better_result[0][2], nxt[0], nxt[1]])
keep.append([better_result[1][2], better_result[2][0], seg[i][1]])
elif self.options.keep_start is True and self.options.keep_end is True:
if segOfTOccurence == 1:
keep.append([seg[i-1][0], seg[i-1][0], seg[i-1][0]])
else:
keep.append([seg[i-1][1], seg[i-1][1], seg[i-1][1]])
keep.append([seg[i-1][2], aSeg, seg[i][1]])
new[-1].append(seg[i]) new[-1].append(seg[i])
if self.options.keep_seg is False:
newpath = CubicSuperPath(new).to_path(curves_only=True).to_arrays() newpath = CubicSuperPath(new).to_path(curves_only=True).to_arrays()
#insert the splitting at the occurence (we add "m 0,0") to break the path #insert the splitting at the occurence (we add "m 0,0") to break the path
newpath.insert(segOfTOccurence + 1, ['m', [0, 0]]) newpath.insert(segOfTOccurence + 1, ['m', [0, 0]])
element.path = Path(newpath) element.path = Path(newpath)
breakAparts = self.breakContours(element) breakAparts = self.breakContours(element)
pathStart = breakAparts[0]
pathEnd = breakAparts[1]
if self.options.keep_start is False:
pathStart.delete()
if self.options.keep_end is False:
pathEnd.delete()
else:
element.path = CubicSuperPath(keep)
#print the breaking point coordinate #print the breaking point coordinate
#for step, (x, y) in enumerate(breakAparts[1].path.end_points): #for step, (x, y) in enumerate(breakAparts[1].path.end_points):
# self.msg("x={},y={}".format(x, y)) # self.msg("x={},y={}".format(x, y))