Merge pull request #180 from lexelby/lexelby-outset

add Expand param for fills

lib/elements/auto_fill.py

@@ -63,20 +63,43 @@ class AutoFill(Fill):
         return self.get_float_param("fill_underlay_max_stitch_length_mm") or self.max_stitch_length
 
     @property
-    @param('fill_underlay_inset_mm', _('Inset'), unit='mm', group=_('AutoFill Underlay'), type='float', default=0)
+    @param('fill_underlay_inset_mm',
+           _('Inset'),
+           tooltip='Shrink the shape before doing underlay, to prevent underlay from showing around the outside of the fill.',
+           unit='mm',
+           group=_('AutoFill Underlay'),
+           type='float',
+           default=0)
     def fill_underlay_inset(self):
         return self.get_float_param('fill_underlay_inset_mm', 0)
 
     @property
-    def underlay_shape(self):
-        if self.fill_underlay_inset:
-            shape = self.shape.buffer(-self.fill_underlay_inset)
+    @param('expand_mm',
+           _('Expand'),
+           tooltip='Expand the shape before fill stitching, to compensate for gaps between shapes.',
+           unit='mm',
+           type='float',
+           default=0)
+    def expand(self):
+        return self.get_float_param('expand_mm', 0)
+
+    def shrink_or_grow_shape(self, amount):
+        if amount:
+            shape = self.shape.buffer(amount)
             if not isinstance(shape, shgeo.MultiPolygon):
                 shape = shgeo.MultiPolygon([shape])
             return shape
         else:
             return self.shape
 
+    @property
+    def underlay_shape(self):
+        return self.shrink_or_grow_shape(-self.fill_underlay_inset)
+
+    @property
+    def fill_shape(self):
+        return self.shrink_or_grow_shape(self.expand)
+
     def to_patches(self, last_patch):
         stitches = []
 
@@ -96,7 +119,7 @@ class AutoFill(Fill):
                                       starting_point))
             starting_point = stitches[-1]
 
-        stitches.extend(auto_fill(self.shape,
+        stitches.extend(auto_fill(self.fill_shape,
                                   self.angle,
                                   self.row_spacing,
                                   self.end_row_spacing,

messages.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2018-05-01 21:21-0400\n"
+"POT-Creation-Date: 2018-06-01 20:34-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -44,6 +44,9 @@ msgstr ""
 msgid "Inset"
 msgstr ""
 
+msgid "Expand"
+msgstr ""
+
 msgid "TRIM after"
 msgstr ""