FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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some fixes in contour scanner and trimmer

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This commit is contained in:
Mario Voigt 2021-07-08 03:13:57 +02:00
parent 56678066cc
commit e12b2500cc
1 changed files with 20 additions and 12 deletions
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32
extensions/fablabchemnitz/contour_scanner_and_trimmer/contour_scanner_and_trimmer.py
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@ -7,6 +7,7 @@ Extension for InkScape 1.0+
- add more comments
- add more debug output
- add documentation at online page
- fix filtering duplicate lines if perfect vertical > write a function process_set_y()
- add statistics about type counts and path lengths (before/after sub splitting/trimming)
- add options:
- replace trimmed paths by bezier paths (calculating lengths and required t parameter)
@ -318,11 +319,11 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
'''
dx = p1[0] - p0[0]
if dx == 0:
return sys.float_info.max
return sys.float_info.max #vertical
return (p1[1] - p0[1]) / dx
def process_set(self, working_set):
def process_set_x(self, working_set):
if len(working_set) < 2:
return (True, working_set)
@ -342,14 +343,11 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
# the only remaining permissible configuration: collinear segments with a gap between them
# e.g. --- -----
# otherwise we combine segments and flag the set as requiring more processing
s0x0 = working_set[i]['p0'][0]
s0x1 = working_set[i]['p1'][0]
s1x0 = working_set[j]['p0'][0]
s0x0 = working_set[i]['p0'][0]
s0x1 = working_set[i]['p1'][0]
s1x0 = working_set[j]['p0'][0]
s1x1 = working_set[j]['p1'][0]
#if s0x0 == s1x0 and s0x1 == s1x1:
# continue #skip if pointy path is going to be created
if not (s0x0 < s0x1 and s0x1 < s1x0 and s1x0 < s1x1):
# make a duplicate set, omitting segments i and j
new_set = [x for (k, x) in enumerate(working_set) if k not in (i, j)]
@ -357,9 +355,7 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
# add a segment representing i and j's furthest points
pts = [ working_set[i]['p0'], working_set[i]['p1'], working_set[j]['p0'], working_set[j]['p1'] ]
pts.sort(key=lambda x: x[0])
if pts[0] == pts[-1]:
continue #skip if pointy path is going to be created
new_set.append({
'p0': pts[0],
'p1': pts[-1],
@ -415,6 +411,18 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
working_set = []
output_set = []
input_set.sort(key=lambda x: x['slope'])
input_set_new = []
#loop through input_set to filter out the vertical lines because we need to handle them separately
vertical_set = []
for i in range(0, len(input_set)):
if input_set[i]['slope'] == sys.float_info.max:
vertical_set.append(input_set[i])
else:
input_set_new.append(input_set[i])
input_set = input_set_new #overwrite the input_set with the filtered one
input_set.append(False) # used to clear out lingering contents of working_set on last iteration
current_slope = input_set[0]['slope']
for input in input_set:
@ -426,7 +434,7 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
else: # slope discontinuity, process accumulated set
while True:
(done, working_set) = self.process_set(working_set)
(done, working_set) = self.process_set_x(working_set)
if done:
output_set.extend(working_set)
break