fix bentley ottmann handling in Contour Scanner
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@ -81,7 +81,9 @@
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<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>
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<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>
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<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>
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<label appearance="header">Bentley-Ottmann sweep line settings</label>
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</page>
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<page name="tab_bentleyottmann" gui-text="Bentley-Ottmann">
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<label appearance="header">Sweep line settings</label>
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<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>
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<param name="bent_ott_use_debug" type="bool" gui-text="Debug">false</param>
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<param name="bent_ott_use_verbose" type="bool" gui-text="Verbose">false</param>
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@ -845,6 +845,32 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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selfIntersectingPathStyle = {'stroke': str(so.color_self_intersecting_paths), 'fill': 'none', 'stroke-width': so.strokewidth}
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basicSubSplitLineStyle = {'stroke': str(so.color_subsplit), 'fill': 'none', 'stroke-width': so.strokewidth}
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#some config for Bentley Ottmann - applies to highlighting, removing, trimming
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poly_point_isect.USE_IGNORE_SEGMENT_ENDINGS = so.bent_ott_use_ignore_segment_endings
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poly_point_isect.USE_DEBUG = so.bent_ott_use_debug
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poly_point_isect.USE_VERBOSE = so.bent_ott_use_verbose
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if so.show_debug is False:
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poly_point_isect.USE_VERBOSE = False
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poly_point_isect.USE_PARANOID = so.bent_ott_use_paranoid
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poly_point_isect.USE_VERTICAL = so.bent_ott_use_vertical
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NUMBER_TYPE = so.bent_ott_number_type
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if NUMBER_TYPE == 'native':
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Real = float
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NUM_EPS = Real("1e-10")
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NUM_INF = Real(float("inf"))
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elif NUMBER_TYPE == 'numpy':
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import numpy
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Real = numpy.float64
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del numpy
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NUM_EPS = Real("1e-10")
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NUM_INF = Real(float("inf"))
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poly_point_isect.Real = Real
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poly_point_isect.NUM_EPS = NUM_EPS
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poly_point_isect.NUM_INF = NUM_INF
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poly_point_isect.NUM_EPS_SQ = NUM_EPS * NUM_EPS
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poly_point_isect.NUM_ZERO = Real(0.0)
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poly_point_isect.NUM_ONE = Real(1.0)
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#get all paths which are within selection or in document and generate sub split lines
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pathElements = self.get_path_elements()
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@ -1021,25 +1047,26 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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#check for self intersections using Bentley-Ottmann algorithm.
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isSelfIntersecting = False
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selfIntersectionPoints = isect_segments(subSplitLines, validate=True)
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if len(selfIntersectionPoints) > 0:
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isSelfIntersecting = True
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if so.show_debug is True:
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self.msg("{} in {} intersects itself with {} intersections!".format(subSplitId, originalPathId, len(selfIntersectionPoints)))
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if so.highlight_self_intersecting is True:
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for subSplitLine in subSplitLineGroup:
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subSplitLine.style = selfIntersectingPathStyle #adjusts line color
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#delete cosmetic sub split lines if desired
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if so.remove_self_intersecting:
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subSplitLineGroup.delete()
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if so.visualize_self_intersections is True: #draw points (circles)
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selfIntersectionGroup = self.visualize_self_intersections(pathElement, selfIntersectionPoints)
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if so.highlight_self_intersecting is True or so.remove_self_intersecting or so.visualize_self_intersections:
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selfIntersectionPoints = isect_segments(subSplitLines, validate=True)
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if len(selfIntersectionPoints) > 0:
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isSelfIntersecting = True
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if so.show_debug is True:
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self.msg("{} in {} intersects itself with {} intersections!".format(subSplitId, originalPathId, len(selfIntersectionPoints)))
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if so.highlight_self_intersecting is True:
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for subSplitLine in subSplitLineGroup:
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subSplitLine.style = selfIntersectingPathStyle #adjusts line color
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#delete cosmetic sub split lines if desired
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if so.remove_self_intersecting:
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subSplitLineGroup.delete()
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if so.visualize_self_intersections is True: #draw points (circles)
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selfIntersectionGroup = self.visualize_self_intersections(pathElement, selfIntersectionPoints)
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#delete self-intersecting sub split lines and orginal paths
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if so.remove_self_intersecting:
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subSplitLineArray = subSplitLineArray[:len(subSplitLineArray) - len(segs) - 1] #remove all last added lines
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pathElement.delete() #and finally delete the orginal path
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continue
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#delete self-intersecting sub split lines and orginal paths
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if so.remove_self_intersecting:
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subSplitLineArray = subSplitLineArray[:len(subSplitLineArray) - len(segs) - 1] #remove all last added lines
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pathElement.delete() #and finally delete the orginal path
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continue
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#adjust the style of original paths if desired. Has influence to the finally trimmed lines style results too!
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if so.removefillsetstroke is True:
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@ -1169,33 +1196,6 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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'''
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if so.draw_trimmed is True:
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try:
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#some config for Bentley Ottmann
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poly_point_isect.USE_IGNORE_SEGMENT_ENDINGS = so.bent_ott_use_ignore_segment_endings
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poly_point_isect.USE_DEBUG = so.bent_ott_use_debug
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poly_point_isect.USE_VERBOSE = so.bent_ott_use_verbose
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if so.show_debug is False:
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poly_point_isect.USE_VERBOSE = False
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poly_point_isect.USE_PARANOID = so.bent_ott_use_paranoid
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poly_point_isect.USE_VERTICAL = so.bent_ott_use_vertical
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NUMBER_TYPE = so.bent_ott_number_type
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if NUMBER_TYPE == 'native':
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Real = float
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NUM_EPS = Real("1e-10")
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NUM_INF = Real(float("inf"))
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elif NUMBER_TYPE == 'numpy':
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import numpy
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Real = numpy.float64
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del numpy
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NUM_EPS = Real("1e-10")
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NUM_INF = Real(float("inf"))
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poly_point_isect.Real = Real
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poly_point_isect.NUM_EPS = NUM_EPS
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poly_point_isect.NUM_INF = NUM_INF
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poly_point_isect.NUM_EPS_SQ = NUM_EPS * NUM_EPS
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poly_point_isect.NUM_ZERO = Real(0.0)
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poly_point_isect.NUM_ONE = Real(1.0)
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allSubSplitLineStrings = []
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allSubSplitLineStringsTransformed = []
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for subSplitLine in subSplitLineArray:
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