Option to drop short stitches (#1693)

lib/api/stitch_plan.py

@@ -18,7 +18,8 @@ def get_stitch_plan():
 
     metadata = g.extension.get_inkstitch_metadata()
     collapse_len = metadata['collapse_len_mm']
+    min_stitch_len = metadata['min_stitch_len_mm']
     patches = g.extension.elements_to_stitch_groups(g.extension.elements)
-    stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len)
+    stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len, min_stitch_len=min_stitch_len)
 
     return jsonify(stitch_plan)

lib/extensions/embroider_settings.py

@@ -16,7 +16,12 @@ class EmbroiderSettings(InkstitchExtension):
                                      action="store", type=float,
                                      dest="collapse_length_mm", default=3.0,
                                      help="max collapse length (mm)")
+        self.arg_parser.add_argument("-l", "--min_stitch_len_mm",
+                                     action="store", type=float,
+                                     dest="min_stitch_len_mm", default=0,
+                                     help="minimum stitch length (mm)")
 
     def effect(self):
         self.metadata = self.get_inkstitch_metadata()
         self.metadata['collapse_len_mm'] = self.options.collapse_length_mm
+        self.metadata['min_stitch_len_mm'] = self.options.min_stitch_len_mm

lib/extensions/generate_palette.py

@@ -73,7 +73,7 @@ class GeneratePalette(InkstitchExtension):
             else:
                 number = 0
                 name = ' '.join(color_name)
-            color = "\n%s\t%s\t%s\t%s   %s" % (str(color[0]).rjust(3), str(color[1]).rjust(3), str(color[2]).rjust(3), name.rjust(30), number)
+            color = "\n%s\t%s\t%s\t%s    %s" % (str(color[0]).rjust(3), str(color[1]).rjust(3), str(color[2]).rjust(3), name.rjust(30), number)
             colors.append(color)
 
         return colors

lib/extensions/output.py

@@ -52,8 +52,10 @@ class Output(InkstitchExtension):
 
         self.metadata = self.get_inkstitch_metadata()
         collapse_len = self.metadata['collapse_len_mm']
+        min_stitch_len = self.metadata['min_stitch_len_mm']
         patches = self.elements_to_stitch_groups(self.elements)
-        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len, disable_ties=self.settings.get('laser_mode', False))
+        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len, disable_ties=self.settings.get('laser_mode', False),
+                                                   min_stitch_len=min_stitch_len)
 
         temp_file = tempfile.NamedTemporaryFile(suffix=".%s" % self.file_extension, delete=False)
 

lib/extensions/print_pdf.py

@@ -308,8 +308,9 @@ class Print(InkstitchExtension):
 
         self.metadata = self.get_inkstitch_metadata()
         collapse_len = self.metadata['collapse_len_mm']
+        min_stitch_len = self.metadata['min_stitch_len_mm']
         patches = self.elements_to_stitch_groups(self.elements)
-        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len)
+        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len, min_stitch_len=min_stitch_len)
         palette = ThreadCatalog().match_and_apply_palette(stitch_plan, self.get_inkstitch_metadata()['thread-palette'])
 
         overview_svg, color_block_svgs = self.render_svgs(stitch_plan, realistic=False)

lib/extensions/stitch_plan_preview.py

@@ -35,8 +35,9 @@ class StitchPlanPreview(InkstitchExtension):
         visual_commands = True
         self.metadata = self.get_inkstitch_metadata()
         collapse_len = self.metadata['collapse_len_mm']
+        min_stitch_len = self.metadata['min_stitch_len_mm']
         patches = self.elements_to_stitch_groups(self.elements)
-        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len)
+        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len, min_stitch_len=min_stitch_len)
         render_stitch_plan(svg, stitch_plan, realistic, visual_commands)
 
         # apply options

lib/extensions/zip.py

@@ -43,8 +43,9 @@ class Zip(InkstitchExtension):
 
         self.metadata = self.get_inkstitch_metadata()
         collapse_len = self.metadata['collapse_len_mm']
+        min_stitch_len = self.metadata['min_stitch_len_mm']
         patches = self.elements_to_stitch_groups(self.elements)
-        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len)
+        stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len, min_stitch_len=min_stitch_len)
 
         base_file_name = self.get_base_file_name()
         path = tempfile.mkdtemp()

lib/stitch_plan/color_block.py

@@ -98,19 +98,21 @@ class ColorBlock(object):
 
         return False
 
-    def filter_duplicate_stitches(self):
+    def filter_duplicate_stitches(self, min_stitch_len=0.1):
         if not self.stitches:
             return
 
-        stitches = [self.stitches[0]]
+        if min_stitch_len is None:
+            min_stitch_len = 0.1
 
+        stitches = [self.stitches[0]]
         for stitch in self.stitches[1:]:
             if stitches[-1].jump or stitch.stop or stitch.trim or stitch.color_change:
                 # Don't consider jumps, stops, color changes, or trims as candidates for filtering
                 pass
             else:
                 length = (stitch - stitches[-1]).length()
-                if length <= 0.1 * PIXELS_PER_MM:
+                if length <= min_stitch_len * PIXELS_PER_MM:
                     # duplicate stitch, skip this one
                     continue
 

lib/stitch_plan/stitch_plan.py

@@ -13,7 +13,7 @@ from .color_block import ColorBlock
 from .ties import add_ties
 
 
-def stitch_groups_to_stitch_plan(stitch_groups, collapse_len=None, disable_ties=False):  # noqa: C901
+def stitch_groups_to_stitch_plan(stitch_groups, collapse_len=None, min_stitch_len=0.1, disable_ties=False):  # noqa: C901
 
     """Convert a collection of StitchGroups to a StitchPlan.
 
@@ -71,7 +71,7 @@ def stitch_groups_to_stitch_plan(stitch_groups, collapse_len=None, disable_ties=
         # last block ended in a stop, so now we have an empty block
         del stitch_plan.color_blocks[-1]
 
-    stitch_plan.filter_duplicate_stitches()
+    stitch_plan.filter_duplicate_stitches(min_stitch_len)
 
     if not disable_ties:
         stitch_plan.add_ties()
@@ -101,9 +101,9 @@ class StitchPlan(object):
     def add_color_block(self, color_block):
         self.color_blocks.append(color_block)
 
-    def filter_duplicate_stitches(self):
+    def filter_duplicate_stitches(self, min_stitch_len):
         for color_block in self:
-            color_block.filter_duplicate_stitches()
+            color_block.filter_duplicate_stitches(min_stitch_len)
 
     def add_ties(self):
         # see ties.py

templates/embroider_settings.xml

@@ -15,6 +15,9 @@
     <param name="collapse_len_mm" type="float" precision="1" min="0" max="10"
            gui-text="Collapse length (mm)"
            gui-description="Jump stitches smaller than this will be treated as normal stitches.">3</param>
+    <param name="min_stitch_len_mm" type="float" precision="1" min="0" max="10"
+           gui-text="Minimal stitch length (mm)"
+           gui-description="Drop stitches smaller than this value.">0.1</param>
     <script>
         {{ command_tag | safe }}
     </script>