1 files changed, 64 insertions, 0 deletions
diff --git a/lib/extensions/jump_to_trim.py b/lib/extensions/jump_to_trim.py
new file mode 100644
index 00000000..44cf460d
--- /dev/null
+++ b/lib/extensions/jump_to_trim.py
@@ -0,0 +1,64 @@
+# Authors: see git history
+#
+# Copyright (c) 2024 Authors
+# Licensed under the GNU GPL version 3.0 or later.  See the file LICENSE for details.
+
+from inkex import Boolean, DirectedLineSegment
+
+from ..commands import add_commands
+from ..svg import PIXELS_PER_MM
+from .base import InkstitchExtension
+
+
+class JumpToTrim(InkstitchExtension):
+    """Adds a trim command to avoid jump stitches."""
+
+    def __init__(self, *args, **kwargs):
+        InkstitchExtension.__init__(self, *args, **kwargs)
+        self.arg_parser.add_argument("--tab")
+
+        self.arg_parser.add_argument("-i", "--minimum-jump-length", type=float, default=3.0, dest="min_jump")
+        self.arg_parser.add_argument("-a", "--maximum-jump-length", type=float, default=0, dest="max_jump")
+        self.arg_parser.add_argument("-t", "--use-command-symbols", type=Boolean, default=False, dest="use_command_symbols")
+
+    def effect(self):
+        self._set_selection()
+        self.get_elements()
+
+        last_element = None
+        last_stitch_group = None
+        for element in self.elements:
+            stitch_groups = element.to_stitch_groups(last_stitch_group)
+
+            for stitch_group in stitch_groups:
+                if last_stitch_group is None or stitch_group.color != last_stitch_group.color:
+                    last_stitch_group = stitch_group
+                    continue
+                start = last_stitch_group.stitches[-1]
+                end = stitch_group.stitches[0]
+
+                last_stitch_group = stitch_group
+
+                line = DirectedLineSegment((start.x, start.y), (end.x, end.y))
+                # do not add a running stitch if the distance is smaller than min_jump setting
+                if line.length < self.options.min_jump * PIXELS_PER_MM:
+                    continue
+                # do not add a running stitch if the distance is longer than max_jump setting
+                if self.options.max_jump > 0 and line.length > self.options.max_jump * PIXELS_PER_MM:
+                    continue
+                self._add_trim(last_element)
+            last_element = element
+
+    def _add_trim(self, element):
+        if self.options.use_command_symbols:
+            add_commands(element, ["trim"])
+        else:
+            element.node.set('inkstitch:trim_after', True)
+
+    def _set_selection(self):
+        if not self.svg.selection:
+            self.svg.selection.clear()
+
+
+if __name__ == '__main__':
+    JumpToTrim().run()