Added some option to remove subsplits in contour scanner
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@ -76,6 +76,7 @@
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<param name="combine_nonintersects" type="bool" gui-text="Chain + combine non-intersected lines" gui-description="This will colorize all paths segments which were not intersected ('non-intersected lines'). If the whole path was not intersected at all, it will get another color ('non-intersected paths').">true</param>
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<param name="remove_trim_duplicates" type="bool" gui-text="Remove duplicate trim lines" gui-description="Has no effect if option 'Filter collinear overlapping lines' is enabled because duplicates get pre-filtered.">true</param>
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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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<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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@ -18,6 +18,7 @@ Extension for InkScape 1.0+
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- maybe option: convert rel path to abs path
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replacedelement.path = replacedelement.path.to_absolute().to_superpath().to_path()
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- maybe option: break apart while keeping relative/absolute commands (more complex and not sure if we have a great advantage having this)
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- note: running this extension might leave some empty parent groups in some circumstances. run the clean groups extension separately to fix that
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- important to notice
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- this algorithm might be really slow. Reduce flattening quality to speed up
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@ -52,7 +53,7 @@ Extension for InkScape 1.0+
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Author: Mario Voigt / FabLab Chemnitz
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Mail: mario.voigt@stadtfabrikanten.org
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Date: 09.08.2020 (extension originally called "Contour Scanner")
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Last patch: 23.06.2021
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Last patch: 24.06.2021
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License: GNU GPL v3
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'''
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@ -74,7 +75,7 @@ if speedups.available:
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speedups.enable()
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idPrefixSubSplit = "subsplit"
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idPrefixTrimming = "shapely"
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idPrefixTrimming = "trimmed"
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intersectedVerb = "intersected"
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collinearVerb = "collinear"
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@ -649,6 +650,7 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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pars.add_argument("--combine_nonintersects", type=inkex.Boolean, default=True, help="Combine non-intersected lines")
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pars.add_argument("--remove_trim_duplicates", type=inkex.Boolean, default=True, help="Remove duplicate trim lines")
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pars.add_argument("--reverse_trim_removal_order", type=inkex.Boolean, default=False, help="Reverses the order of removal. Relevant for keeping certain styles of elements")
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pars.add_argument("--remove_subsplit_after_trimming", type=inkex.Boolean, default=True, help="Remove sub split lines after trimming")
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#Trimming - Bentley-Ottmann sweep line settings
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pars.add_argument("--bent_ott_use_ignore_segment_endings", type=inkex.Boolean, default=True, help="Whether to ignore intersections of line segments when both their end points form the intersection point")
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pars.add_argument("--bent_ott_use_debug", type=inkex.Boolean, default=False)
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@ -696,7 +698,8 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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if so.highlight_merges is True:
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so.filter_subsplit_collinear = True
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if so.filter_subsplit_collinear_action == "separate_group":
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if so.filter_subsplit_collinear is True: #this is a must.
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#if so.draw_subsplit is disabled bu we filter sub split lines and follow with trim operation we lose a lot of elements which may not be deleted!
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so.draw_subsplit = True
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#some constant stuff / styles
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@ -1087,11 +1090,21 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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if so.remove_trim_duplicates is True:
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if so.show_debug is True: self.msg("checking for duplicate trim lines and deleting them")
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self.remove_trim_duplicates(allTrimGroups)
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if so.combine_nonintersects is True:
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if so.show_debug is True: self.msg("glueing together all non-intersected sub split lines to larger path structures again (cleaning up)")
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self. combine_nonintersects(allTrimGroups)
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self.combine_nonintersects(allTrimGroups)
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if so.remove_subsplit_after_trimming is True:
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if so.show_debug is True: self.msg("removing unwanted subsplit lines after trimming")
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for subSplitLine in subSplitLineArray:
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ssl_parent = subSplitLine.getparent()
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subSplitLine.delete()
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if ssl_parent is not None and len(ssl_parent) == 0:
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if self.options.show_debug is True:
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self.msg("Deleting group {}".format(ssl_parent.get('id')))
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ssl_parent.delete()
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except AssertionError as e:
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self.msg("Error calculating global intersections.\n\
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See https://github.com/ideasman42/isect_segments-bentley_ottmann.\n\n\
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