fixed overlapping line scanning
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@ -13,7 +13,7 @@
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<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for sub split lines / lines trimmed by shapely (default: 3)">3</param>
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<param name="snap_tolerance" type="float" min="0.01" max="10.0" gui-text="Snap tolerance" gui-description="Snap tolerance for intersection points on paths (default: 0.1)">0.1</param>
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<param name="draw_subsplit" type="bool" gui-text="Draw sub split lines (for debugging purposes)" gui-description="Draws polylines. Will be automatically enabled if any highlighting is activated.">false</param>
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<param name="remove_subsplit_collinear" type="bool" gui-text="Remove collinear overlapping lines (experimental)" gui-description="Removes any duplicates by merging (multiple) overlapping line segments into longer lines.">true</param>
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<param name="remove_subsplit_collinear" type="bool" gui-text="Remove collinear overlapping lines (experimental)" gui-description="Removes any duplicates by merging (multiple) overlapping line segments into longer lines. Not possible to apply for original paths because this routine does not support bezier type paths.">true</param>
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</page>
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<page name="tab_scanning" gui-text="Scanning and Trimming">
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<hbox>
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@ -5,9 +5,8 @@ Extension for InkScape 1.0+
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- WARNING: HORRIBLY SLOW CODE. PLEASE HELP TO MAKE IT USEFUL FOR LARGE AMOUNT OF PATHS
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- add options:
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- replace trimmed paths by bezier paths (calculating lengths and required t parameter)
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- detection of collinear segments: does not work sometimes because it generates pointy paths or kicks out paths which still should be inside the data set
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- filter/remove overlapping/duplicates in
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- in original selection
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- in original selection (not working bezier but for straight line segments!) We can use another extension for it
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- split bezier
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- ...
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- maybe option: convert abs path to rel path
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@ -339,6 +338,10 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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s0x1 = working_set[i]['p1'][0]
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s1x0 = working_set[j]['p0'][0]
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s1x1 = working_set[j]['p1'][0]
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if s0x0 == s1x0 and s0x1 == s1x1:
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continue #skip if pointy path is going to be created
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if not (s0x0 < s0x1 and s0x1 < s1x0 and s1x0 < s1x1):
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# make a duplicate set, omitting segments i and j
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new_set = [x for (k, x) in enumerate(working_set) if k not in (i, j)]
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@ -346,16 +349,9 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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# add a segment representing i and j's furthest points
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pts = [ working_set[i]['p0'], working_set[i]['p1'], working_set[j]['p0'], working_set[j]['p1'] ]
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pts.sort(key=lambda x: x[0])
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#if pts[0] == pts[-1]:
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# replace_path = Path(working_set[i]['d']).to_arrays()
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# if self.options.show_debug is True:
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# self.msg("Error: creating pointy path while looking for overlapping lines. Result will be wrong: p0{} = p1{}. Replacing by p0{} = p1{}".format(pts[0], pts[-1], replace_path[0][1], replace_path[1][1]))
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# pts[0] = replace_path[0][1]
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# pts[-1] = replace_path[1][1]
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# working_set[i]['p0'] = replace_path[0][1]
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# working_set[i]['p1'] = replace_path[1][1]
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# working_set[j]['p0'] = replace_path[0][1]
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# working_set[j]['p1'] = replace_path[1][1]
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if pts[0] == pts[-1]:
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continue #skip if pointy path is going to be created
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new_set.append({
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'p0': pts[0],
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'p1': pts[-1],
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@ -373,10 +369,14 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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Loop through a set of lines and find + fiter all overlapping segments / duplicate segments
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finally returns a set of merged-like lines and a set of original items which should be dropped
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'''
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segments = []
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input_set = []
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input_ids = []
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# collect segments, calculate their slopes, order their points left-to-right
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for line in lineArray:
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csp = line.path.to_arrays()
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#csp = Path(line.path.transform(line.composed_transform()).to_superpath()).to_arrays()
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x1, y1, x2, y2 = csp[0][1][0], csp[0][1][1], csp[1][1][0], csp[1][1][1]
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# ensure p0 is left of p1
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if x1 < x2:
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@ -393,19 +393,19 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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s['id'] = line.attrib['id']
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s['originalPathId'] = line.attrib['originalPathId']
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#s['d'] = line.attrib['d']
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segments.append(s)
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input_set.append(s)
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working_set = []
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output_set = []
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segments.sort(key=lambda x: x['slope'])
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segments.append(False) # used to clear out lingering contents of working_set on last iteration
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current_slope = segments[0]['slope']
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for seg in segments:
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# bin sets of segments by slope (within a tolerance)
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dm = seg and abs(seg['slope'] - current_slope) or 0
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if seg and dm < EPS_M:
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working_set.append(seg)
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input_set.sort(key=lambda x: x['slope'])
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input_set.append(False) # used to clear out lingering contents of working_set on last iteration
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current_slope = input_set[0]['slope']
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for input in input_set:
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# bin sets of input_set by slope (within a tolerance)
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dm = input and abs(input['slope'] - current_slope) or 0
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if input and dm < EPS_M:
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working_set.append(input) #we put all lines to working set which have similar slopes
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if input['id'] != '': input_ids.append(input['id'])
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else: # slope discontinuity, process accumulated set
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while True:
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@ -414,28 +414,46 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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output_set.extend(working_set)
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break
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if seg: # begin new working set
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working_set = [seg]
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current_slope = seg['slope']
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seg_ids = []
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for seg in segments:
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if seg is not False and seg['id'] != '':
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seg_ids.append(seg['id'])
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out_ids = []
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if input: # begin new working set
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working_set = [input]
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current_slope = input['slope']
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if input['id'] != '': input_ids.append(input['id'])
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output_ids = []
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for output in output_set:
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out_ids.append(output['id'])
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output_ids.append(output['id'])
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dropped_ids = set(seg_ids) - set(out_ids)
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#self.msg("segments:{}".format(segments))
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#self.msg("_____________")
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#self.msg("working_set:{}".format(working_set))
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#self.msg("_____________")
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#self.msg("output_set:{}".format(output_set))
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#self.msg("_____________")
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#self.msg("dropped_set:{}".format(dropped_ids))
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#self.msg("_____________")
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working_ids = []
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for working in working_set:
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working_ids.append(working['id'])
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#we finally build a list which contains all overlapping elements we want to drop
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dropped_ids = []
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for working_id in working_ids: #if the working id is not in the output id we are going to drop it
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if working_id not in output_ids:
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dropped_ids.append(working_id)
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if self.options.show_debug is True:
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#self.msg("input_set:{}".format(input_set))
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self.msg("input_ids:")
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for input_id in input_ids:
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self.msg(input_id)
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self.msg("*"*24)
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#self.msg("working_set:{}".format(working_set))
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self.msg("working_ids:")
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for working_id in working_ids:
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self.msg(working_id)
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self.msg("*"*24)
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#self.msg("output_set:{}".format(output_set))
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self.msg("output_ids:")
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for output_id in output_ids:
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self.msg(output_id)
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self.msg("*"*24)
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self.msg("dropped_ids:")
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for dropped_id in dropped_ids:
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self.msg(dropped_id)
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self.msg("*"*24)
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return output_set, dropped_ids
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@ -566,7 +584,7 @@ class ContourScannerAndTrimmer(inkex.EffectExtension):
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pars.add_argument("--decimals", type=int, default=3, help="Accuracy for sub split lines / lines trimmed by shapely")
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pars.add_argument("--snap_tolerance", type=float, default=0.1, help="Snap tolerance for intersection points")
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pars.add_argument("--draw_subsplit", type=inkex.Boolean, default=False, help="Draw sub split lines (polylines)")
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pars.add_argument("--remove_subsplit_collinear", type=inkex.Boolean, default=True, help="Removes any duplicates by merging (multiple) overlapping line segments into longer lines.")
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pars.add_argument("--remove_subsplit_collinear", type=inkex.Boolean, default=True, help="Removes any duplicates by merging (multiple) overlapping line segments into longer lines. Not possible to apply for original paths because this routine does not support bezier type paths.")
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#Scanning - Removing
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pars.add_argument("--remove_relative", type=inkex.Boolean, default=False, help="relative cmd")
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