FabLab_Chemnitz/mightyscape-1.1-deprecated
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fix bentley ottmann handling in Contour Scanner

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This commit is contained in:
Mario Voigt 2021-10-04 13:04:49 +02:00
parent e687f44250
commit 9f6fa4499e
2 changed files with 48 additions and 46 deletions
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4
extensions/fablabchemnitz/contour_scanner_and_trimmer/contour_scanner_and_trimmer.inx
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@ -81,7 +81,9 @@
<param name="reverse_trim_removal_order" type="bool" gui-text="Reverse trim line removal order" gui-description="Reverses the order of removal. Relevant for keeping certain styles of elements">false</param>
<param name="remove_subsplit_after_trimming" type="bool" gui-text="Remove sub split lines after trimming" gui-description="Recommended if option 'Filter collinear overlapping lines' is enabled">true</param>
<param name="bezier_trimming" type="bool" gui-text="Trim original beziers (not working yet)" gui-description="If enabled we try to split the original bezier paths at the intersections points by finding the correct bezier segments and calculating t parameters from trimmed sub split lines. Not working yet. Will just print debug info if debug is enabled.">true</param>
<label appearance="header">Bentley-Ottmann sweep line settings</label>
</page>
<page name="tab_bentleyottmann" gui-text="Bentley-Ottmann">
<label appearance="header">Sweep line settings</label>
<param name="bent_ott_use_ignore_segment_endings" type="bool" gui-text="Ignore segment endings" gui-description="Whether to ignore intersections of line segments when both their end points form the intersection point">true</param>
<param name="bent_ott_use_debug" type="bool" gui-text="Debug">false</param>
<param name="bent_ott_use_verbose" type="bool" gui-text="Verbose">false</param>

54
extensions/fablabchemnitz/contour_scanner_and_trimmer/contour_scanner_and_trimmer.py
View File

@ -845,6 +845,32 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
selfIntersectingPathStyle = {'stroke': str(so.color_self_intersecting_paths), 'fill': 'none', 'stroke-width': so.strokewidth}
basicSubSplitLineStyle = {'stroke': str(so.color_subsplit), 'fill': 'none', 'stroke-width': so.strokewidth}
#some config for Bentley Ottmann - applies to highlighting, removing, trimming
poly_point_isect.USE_IGNORE_SEGMENT_ENDINGS = so.bent_ott_use_ignore_segment_endings
poly_point_isect.USE_DEBUG = so.bent_ott_use_debug
poly_point_isect.USE_VERBOSE = so.bent_ott_use_verbose
if so.show_debug is False:
poly_point_isect.USE_VERBOSE = False
poly_point_isect.USE_PARANOID = so.bent_ott_use_paranoid
poly_point_isect.USE_VERTICAL = so.bent_ott_use_vertical
NUMBER_TYPE = so.bent_ott_number_type
if NUMBER_TYPE == 'native':
Real = float
NUM_EPS = Real("1e-10")
NUM_INF = Real(float("inf"))
elif NUMBER_TYPE == 'numpy':
import numpy
Real = numpy.float64
del numpy
NUM_EPS = Real("1e-10")
NUM_INF = Real(float("inf"))
poly_point_isect.Real = Real
poly_point_isect.NUM_EPS = NUM_EPS
poly_point_isect.NUM_INF = NUM_INF
poly_point_isect.NUM_EPS_SQ = NUM_EPS * NUM_EPS
poly_point_isect.NUM_ZERO = Real(0.0)
poly_point_isect.NUM_ONE = Real(1.0)
#get all paths which are within selection or in document and generate sub split lines
pathElements = self.get_path_elements()
@ -1021,6 +1047,7 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
#check for self intersections using Bentley-Ottmann algorithm.
isSelfIntersecting = False
if so.highlight_self_intersecting is True or so.remove_self_intersecting or so.visualize_self_intersections:
selfIntersectionPoints = isect_segments(subSplitLines, validate=True)
if len(selfIntersectionPoints) > 0:
isSelfIntersecting = True
@ -1169,33 +1196,6 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
'''
if so.draw_trimmed is True:
try:
#some config for Bentley Ottmann
poly_point_isect.USE_IGNORE_SEGMENT_ENDINGS = so.bent_ott_use_ignore_segment_endings
poly_point_isect.USE_DEBUG = so.bent_ott_use_debug
poly_point_isect.USE_VERBOSE = so.bent_ott_use_verbose
if so.show_debug is False:
poly_point_isect.USE_VERBOSE = False
poly_point_isect.USE_PARANOID = so.bent_ott_use_paranoid
poly_point_isect.USE_VERTICAL = so.bent_ott_use_vertical
NUMBER_TYPE = so.bent_ott_number_type
if NUMBER_TYPE == 'native':
Real = float
NUM_EPS = Real("1e-10")
NUM_INF = Real(float("inf"))
elif NUMBER_TYPE == 'numpy':
import numpy
Real = numpy.float64
del numpy
NUM_EPS = Real("1e-10")
NUM_INF = Real(float("inf"))
poly_point_isect.Real = Real
poly_point_isect.NUM_EPS = NUM_EPS
poly_point_isect.NUM_INF = NUM_INF
poly_point_isect.NUM_EPS_SQ = NUM_EPS * NUM_EPS
poly_point_isect.NUM_ZERO = Real(0.0)
poly_point_isect.NUM_ONE = Real(1.0)
allSubSplitLineStrings = []
allSubSplitLineStringsTransformed = []
for subSplitLine in subSplitLineArray: