Various fixes (#3011)

* change satin underlay stitch length default for real
* fix zero length lock stitch
* fix typos

lib/elements/satin_column.py

@@ -126,7 +126,7 @@ class SatinColumn(EmbroideryElement):
     @param('random_width_decrease_percent',
            _('Random percentage of satin width decrease'),
            tooltip=_('shorten stitch across rails at most this percent. '
-                     'Two values separated by a space may be used for an aysmmetric effect.'),
+                     'Two values separated by a space may be used for an asymmetric effect.'),
            default=0, type='float', unit=_("% (each side)"), sort_index=91)
     @cache
     def random_width_decrease(self):
@@ -136,7 +136,7 @@ class SatinColumn(EmbroideryElement):
     @param('random_width_increase_percent',
            _('Random percentage of satin width increase'),
            tooltip=_('lengthen stitch across rails at most this percent. '
-                     'Two values separated by a space may be used for an aysmmetric effect.'),
+                     'Two values separated by a space may be used for an asymmetric effect.'),
            default=0, type='float', unit=_("% (each side)"), sort_index=90)
     @cache
     def random_width_increase(self):
@@ -365,7 +365,7 @@ class SatinColumn(EmbroideryElement):
         return self.get_boolean_param("contour_underlay")
 
     @property
-    @param('contour_underlay_stitch_length_mm', _('Stitch length'), unit='mm', group=_('Contour Underlay'), type='float', default=1.5)
+    @param('contour_underlay_stitch_length_mm', _('Stitch length'), unit='mm', group=_('Contour Underlay'), type='float', default=3)
     def contour_underlay_stitch_length(self):
         return max(self.get_float_param("contour_underlay_stitch_length_mm", 3), 0.01)
 
@@ -422,7 +422,7 @@ class SatinColumn(EmbroideryElement):
         return self.get_boolean_param("center_walk_underlay")
 
     @property
-    @param('center_walk_underlay_stitch_length_mm', _('Stitch length'), unit='mm', group=_('Center-Walk Underlay'), type='float', default=1.5)
+    @param('center_walk_underlay_stitch_length_mm', _('Stitch length'), unit='mm', group=_('Center-Walk Underlay'), type='float', default=3)
     def center_walk_underlay_stitch_length(self):
         return max(self.get_float_param("center_walk_underlay_stitch_length_mm", 3), 0.01)
 

lib/output.py

@@ -120,10 +120,10 @@ def write_embroidery_file(file_path, stitch_plan, svg, settings={}):
         num_color_changes = re.search("d+", str(e)).group()
         msg = _("Couldn't save embrodiery file.")
         msg += '\n\n'
-        msg += _("There are {num_color_changes} in your design. This is way too many.").format(num_color_changes=num_color_changes)
+        msg += _("There are {num_color_changes} color changes in your design. This is way too many.").format(num_color_changes=num_color_changes)
         msg += '\n'
         msg += _("Please reduce color changes. Find more information on our website:")
         msg += '\n\n'
-        msg += _("http://inkstitch.org/docs/faq/#too-many-color-changes")
+        msg += _("https://inkstitch.org/docs/faq/#too-many-color-changes")
         inkex.errormsg(msg)
         sys.exit(1)

lib/stitch_plan/lock_stitch.py

@@ -85,12 +85,15 @@ class RelativeLock(LockStitchDefinition):
         to_previous = stitches[1] - stitches[0]
         length = to_previous.length()
 
+        if length == 0:
+            direction = Stitch(0, 0.5)
+        else:
+            direction = to_previous.unit()
+
         # travel at least 0.5 and at most 1.5
         length = max(length, 0.5 * PIXELS_PER_MM)
         length = min(length, 1.5 * PIXELS_PER_MM)
 
-        direction = to_previous.unit()
-
         # Travel back one stitch, stopping halfway there.
         # Then go forward one stitch, stopping halfway between
         # again.