diff options
| -rw-r--r-- | lib/elements/stroke.py | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/lib/elements/stroke.py b/lib/elements/stroke.py index 258bf737..fd5983d5 100644 --- a/lib/elements/stroke.py +++ b/lib/elements/stroke.py @@ -3,6 +3,8 @@ # Copyright (c) 2010 Authors # Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details. +from math import ceil + import shapely.geometry from inkex import Transform @@ -104,7 +106,7 @@ class Stroke(EmbroideryElement): @property @param('running_stitch_length_mm', _('Running stitch length'), - tooltip=_('Length of stitches in running stitch mode.'), + tooltip=_('Length of stitches. Stitches can be shorter according to the stitch tolerance setting.'), unit='mm', type='float', select_items=[('stroke_method', 'running_stitch'), ('stroke_method', 'ripple_stitch')], @@ -115,7 +117,7 @@ class Stroke(EmbroideryElement): @property @param('running_stitch_tolerance_mm', - _('Running stitch tolerance'), + _('Stitch tolerance'), tooltip=_('All stitches must be within this distance from the path. ' + 'A lower tolerance means stitches will be closer together. ' + 'A higher tolerance means sharp corners may be rounded.'), @@ -128,6 +130,20 @@ class Stroke(EmbroideryElement): return max(self.get_float_param("running_stitch_tolerance_mm", 0.2), 0.01) @property + @param('max_stitch_length_mm', + _('Max stitch length'), + tooltip=_('Split stitches longer than this.'), + unit='mm', + type='float', + select_items=[('stroke_method', 'manual_stitch')], + sort_index=4) + def max_stitch_length(self): + max_length = self.get_float_param("max_stitch_length_mm", None) + if not max_length or max_length <= 0: + return + return max_length + + @property @param('zigzag_spacing_mm', _('Zig-zag spacing (peak-to-peak)'), tooltip=_('Length of stitches in zig-zag mode.'), @@ -396,6 +412,21 @@ class Stroke(EmbroideryElement): return StitchGroup(self.color, repeated_stitches, lock_stitches=self.lock_stitches, force_lock_stitches=self.force_lock_stitches) + def apply_max_stitch_length(self, path): + # apply max distances + max_len_path = [path[0]] + for points in zip(path[:-1], path[1:]): + line = shapely.geometry.LineString(points) + dist = line.length + if dist > self.max_stitch_length: + num_subsections = ceil(dist / self.max_stitch_length) + additional_points = [Point(coord.x, coord.y) + for coord in [line.interpolate((i/num_subsections), normalized=True) + for i in range(1, num_subsections + 1)]] + max_len_path.extend(additional_points) + max_len_path.append(points[1]) + return max_len_path + def ripple_stitch(self): return StitchGroup( color=self.color, @@ -422,6 +453,9 @@ class Stroke(EmbroideryElement): path = [Point(x, y) for x, y in path] # manual stitch if self.stroke_method == 'manual_stitch': + if self.max_stitch_length: + path = self.apply_max_stitch_length(path) + if self.force_lock_stitches: lock_stitches = self.lock_stitches else: |