Do not render clipPath and mask (#1379)

* Ignore clipPath and mask
* Render polygons

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/extensions/base.py b/lib/extensions/base.py
index cc2fea53..a065b5cc 100644
--- a/lib/extensions/base.py
+++ b/lib/extensions/base.py
@@ -20,7 +20,8 @@ from ..i18n import _
 from ..patterns import is_pattern
 from ..svg import generate_unique_id
 from ..svg.tags import (CONNECTOR_TYPE, EMBROIDERABLE_TAGS, INKSCAPE_GROUPMODE,
-                        NOT_EMBROIDERABLE_TAGS, SVG_DEFS_TAG, SVG_GROUP_TAG)
+                        NOT_EMBROIDERABLE_TAGS, SVG_CLIPPATH_TAG, SVG_DEFS_TAG,
+                        SVG_GROUP_TAG, SVG_MASK_TAG)
 
 SVG_METADATA_TAG = inkex.addNS("metadata", "svg")
 
@@ -146,7 +147,9 @@ class InkstitchExtension(inkex.Effect):
         if (node.tag in EMBROIDERABLE_TAGS or node.tag == SVG_GROUP_TAG) and element.get_style('display', 'inline') is None:
             return []
 
-        if node.tag == SVG_DEFS_TAG:
+        # defs, masks and clippaths can contain embroiderable elements
+        # but should never be rendered directly.
+        if node.tag in [SVG_DEFS_TAG, SVG_MASK_TAG, SVG_CLIPPATH_TAG]:
             return []
 
         # command connectors with a fill color set, will glitch into the elements list