FabLab_Chemnitz/mightyscape-1.1-deprecated
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mightyscape-1.1-deprecated
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several enhancements for path handlings when breaking apart

This commit is contained in:
Mario Voigt 2021-06-02 19:40:39 +02:00
parent 5ebc7db481
commit abdc94eb00
6 changed files with 100 additions and 78 deletions
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12
extensions/fablabchemnitz/contourscannerandtrimmer/contour_scanner_and_trimmer.py
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@ -83,11 +83,13 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
for subpath in subPaths:
replacedelement = copy.copy(element)
oldId = replacedelement.get('id')
replacedelement.set('d', CubicSuperPath(subpath))
replacedelement.set('id', oldId + str(idSuffix).zfill(5))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
csp = CubicSuperPath(subpath)
if len(subpath) > 1 and csp[0][0] != csp[0][1]: #avoids pointy paths like M "31.4794 57.6024 Z"
replacedelement.set('d', csp)
replacedelement.set('id', oldId + str(idSuffix))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
parent.remove(element)
for child in element.getchildren():
self.breakContours(child, breakelements)

31
extensions/fablabchemnitz/create_links/create_links.py
View File

@ -80,11 +80,13 @@ class LinksCreator(inkex.EffectExtension):
for subpath in subPaths:
replacedelement = copy.copy(element)
oldId = replacedelement.get('id')
replacedelement.set('d', CubicSuperPath(subpath))
replacedelement.set('id', oldId + str(idSuffix).zfill(5))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
csp = CubicSuperPath(subpath)
if len(subpath) > 1 and csp[0][0] != csp[0][1]: #avoids pointy paths like M "31.4794 57.6024 Z"
replacedelement.set('d', csp)
replacedelement.set('id', oldId + str(idSuffix))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
parent.remove(element)
for child in element.getchildren():
self.breakContours(child, breakelements)
@ -298,25 +300,6 @@ class LinksCreator(inkex.EffectExtension):
breakApartGroup.append(breakOutputelement)
#self.msg(replacedelement.get('id'))
#self.svg.selection.set(replacedelement.get('id')) #update selection to split paths segments (does not work, so commented out)
#cleanup useless points
p = breakOutputelement.path
commandsCoords = p.to_arrays()
# "m 45.250809,91.692739" - this path contains onyl one command - a single point
if len(commandsCoords) == 1:
breakOutputelement.delete()
# "m 45.250809,91.692739 z" - this path contains two commands, but only one coordinate.
# It's a single point, the path is closed by a Z command
elif len(commandsCoords) == 2 and commandsCoords[0][1] == commandsCoords[1][1]:
breakOutputelement.delete()
# "m 45.250809,91.692739 l 45.250809,91.692739" - this path contains two commands,
# but the first and second coordinate are the same. It will render als point
elif len(commandsCoords) == 2 and commandsCoords[-1][0] == 'Z':
breakOutputelement.delete()
# "m 45.250809,91.692739 l 45.250809,91.692739 z" - this path contains three commands,
# but the first and second coordinate are the same. It will render als point, the path is closed by a Z command
elif len(commandsCoords) == 3 and commandsCoords[0][1] == commandsCoords[1][1] and commandsCoords[2][1] == 'Z':
breakOutputelement.delete()
if len(self.svg.selected) > 0:
for element in self.svg.selection.values():

4
extensions/fablabchemnitz/purge_pointy_paths/purge_pointy_paths.py
View File

@ -34,11 +34,11 @@ class PurgeInvalidPaths(inkex.EffectExtension):
elif len(commandsCoords) == 2 and commandsCoords[0][1] == commandsCoords[1][1]:
element.delete()
# "m 45.250809,91.692739 l 45.250809,91.692739" - this path contains two commands,
# but the first and second coordinate are the same. It will render als point
# but the first and second coordinate are the same. It will render as point
elif len(commandsCoords) == 2 and commandsCoords[-1][0] == 'Z':
element.delete()
# "m 45.250809,91.692739 l 45.250809,91.692739 z" - this path contains three commands,
# but the first and second coordinate are the same. It will render als point, the path is closed by a Z command
# but the first and second coordinate are the same. It will render as point, the path is closed by a Z command
elif len(commandsCoords) == 3 and commandsCoords[0][1] == commandsCoords[1][1] and commandsCoords[2][1] == 'Z':
element.delete()
else:

20
extensions/fablabchemnitz/split_and_break_bezier_at_t/split_and_break_bezier_at_t.inx
View File

@ -2,9 +2,23 @@
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<name>Split And Break Bezier At t</name>
<id>fablabchemnitz.de.split_and_break_bezier_at_t</id>
<param name="split_select" type="optiongroup" appearance="radio" gui-text="Split by" gui-description="Choose to split by length or percentage">
<option value="length">length</option>
<option value="t">percentage (t)</option>
</param>
<param name="unit" type="optiongroup" appearance="combo" gui-text="Units">
<option value="mm">mm</option>
<option value="cm">cm</option>
<option value="m">m</option>
<option value="in">in</option>
<option value="pt">pt</option>
<option value="px">px</option>
<option value="pc">pc</option>
</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>
<label xml:space="preserve">Splits a path at value t=0..1 (t=0.5 means 50%)
Applies independently for each sub path in selection.</label>
<label xml:space="preserve">Splits a path at value t=0..1 (t=0.5 means 50%) or at a defined length with unit.
Applies independently for each sub path in selection. Use 'Path > Reverse' to change the cutting direction.</label>
<effect>
<object-type>path</object-type>
<effects-menu>
@ -16,4 +30,4 @@ Applies independently for each sub path in selection.</label>
<script>
<command location="inx" interpreter="python">split_and_break_bezier_at_t.py</command>
</script>
</inkscape-extension>
</inkscape-extension>

99
extensions/fablabchemnitz/split_and_break_bezier_at_t/split_and_break_bezier_at_t.py
View File

@ -17,7 +17,7 @@ class SplitAndBreakBezierAtT(inkex.EffectExtension):
idSuffix = 0
raw = element.path.to_arrays()
subPaths, prev = [], 0
for i in range(len(raw)): # Breaks compound paths into simple paths
for i in range(len(raw)): #breaks compound paths into sub paths
if raw[i][0] == 'M' and i != 0:
subPaths.append(raw[prev:i])
prev = i
@ -25,55 +25,76 @@ class SplitAndBreakBezierAtT(inkex.EffectExtension):
for subpath in subPaths:
replacedelement = copy.copy(element)
oldId = replacedelement.get('id')
replacedelement.set('d', CubicSuperPath(subpath))
replacedelement.set('id', oldId + str(idSuffix).zfill(5))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
csp = CubicSuperPath(subpath)
if len(subpath) > 1 and csp[0][0] != csp[0][1]: #avoids pointy paths like M "31.4794 57.6024 Z"
replacedelement.set('d', csp)
replacedelement.set('id', oldId + str(idSuffix))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
parent.remove(element)
for child in element.getchildren():
self.breakContours(child, breakelements)
return breakelements
def add_arguments(self, pars):
pars.add_argument('--split_select', default="t")
pars.add_argument('--unit', default="mm")
pars.add_argument('--target_length', type=float, default=0.5)
pars.add_argument('--target_t', type=float, default=0.5)
def effect(self):
breakApartElements = None
for element in self.svg.selection.filter(PathElement):
breakApartElements = self.breakContours(element, breakApartElements)
for element in breakApartElements:
csp = element.path.to_superpath()
slengths, totalLength = csplength(csp)
length_at_target_t = self.options.target_t * totalLength
new = []
lengthSum = 0
segOfTOccurence = None
for seg in csp:
new.append([seg[0][:]])
for i in range(1,len(seg)):
segLength = bezier.cspseglength(new[-1][-1], seg[i])
lengthSum += segLength
current_t = lengthSum / totalLength
#insert a new breaking node in case we are at the desired t parameter
if current_t >= self.options.target_t:
if segOfTOccurence is None:
segOfTOccurence = i
t_dist = 1 - ((lengthSum - length_at_target_t) / segLength)
result = bezier.cspbezsplitatlength(new[-1][-1], seg[i], t_dist)
better_result = [[list(el) for el in elements] for elements in result]
new[-1][-1], nxt, seg[i] = better_result
new[-1].append(nxt[:])
new[-1].append(seg[i])
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
newpath.insert(segOfTOccurence + 1, ['m', [0, 0]])
element.path = Path(newpath)
breakApartElements = self.breakContours(element)
#print the breaking point coordinate
#for step, (x, y) in enumerate(breakApartElements[1].path.end_points):
# self.msg("x={},y={}".format(x, y))
# break
if breakApartElements is not None:
for element in breakApartElements:
csp = element.path.to_superpath()
slengths, totalLength = csplength(csp)
if totalLength == 0:
inkex.utils.debug("{} is invalid: zero length (path d='{}'). Skipping ...".format(element.get('id'), element.path))
continue
if self.options.split_select == "t":
length_at_target_t = self.options.target_t * totalLength
elif self.options.split_select == "length":
length_at_target_t = self.svg.unittouu(str(self.options.target_length) + self.options.unit)
if length_at_target_t > totalLength:
inkex.utils.debug("Entered length is larger than length of {}. Skipping ...".format(element.get('id')))
continue
self.options.target_t = length_at_target_t / totalLength #override
new = []
lengthSum = 0
segOfTOccurence = None
for seg in csp:
new.append([seg[0][:]])
for i in range(1,len(seg)):
segLength = bezier.cspseglength(new[-1][-1], seg[i])
lengthSum += segLength
current_t = lengthSum / totalLength
#insert a new breaking node in case we are at the desired t parameter
if current_t >= self.options.target_t:
if segOfTOccurence is None:
segOfTOccurence = i
t_dist = 1 - ((lengthSum - length_at_target_t) / segLength)
result = bezier.cspbezsplitatlength(new[-1][-1], seg[i], t_dist)
better_result = [[list(el) for el in elements] for elements in result]
new[-1][-1], nxt, seg[i] = better_result
new[-1].append(nxt[:])
new[-1].append(seg[i])
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
newpath.insert(segOfTOccurence + 1, ['m', [0, 0]])
element.path = Path(newpath)
breakAparts = self.breakContours(element)
#print the breaking point coordinate
#for step, (x, y) in enumerate(breakAparts[1].path.end_points):
# self.msg("x={},y={}".format(x, y))
# break
else:
inkex.utils.debug("Selection seems to be empty!")
return
if __name__ == '__main__':
SplitAndBreakBezierAtT().run()

12
extensions/fablabchemnitz/unwind_paths/unwind_paths.py
View File

@ -70,11 +70,13 @@ class UnwindPaths(inkex.EffectExtension):
for subpath in subPaths:
replacedelement = copy.copy(element)
oldId = replacedelement.get('id')
replacedelement.set('d', CubicSuperPath(subpath))
replacedelement.set('id', oldId + str(idSuffix).zfill(5))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
csp = CubicSuperPath(subpath)
if len(subpath) > 1 and csp[0][0] != csp[0][1]: #avoids pointy paths like M "31.4794 57.6024 Z"
replacedelement.set('d', csp)
replacedelement.set('id', oldId + str(idSuffix))
parent.insert(idx, replacedelement)
idSuffix += 1
breakelements.append(replacedelement)
parent.remove(element)
else:
breakelements.append(element)