Merge pull request #252 from inkstitch/lexelby-convert-to-satin

convert path to satin

1 files changed, 21 insertions, 2 deletions

diff --git a/lib/svg/path.py b/lib/svg/path.py
index 2d9c0ff3..52144332 100644
--- a/lib/svg/path.py
+++ b/lib/svg/path.py
@@ -15,11 +15,30 @@ def get_node_transform(node):
     # start with the identity transform
     transform = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]
 
-    # combine this node's transform with all parent groups' transforms
-    transform = simpletransform.composeParents(node, transform)
+    # this if is because sometimes inkscape likes to create paths outside of a layer?!
+    if node.getparent() is not None:
+        # combine this node's transform with all parent groups' transforms
+        transform = simpletransform.composeParents(node, transform)
 
     # add in the transform implied by the viewBox
     viewbox_transform = get_viewbox_transform(node.getroottree().getroot())
     transform = simpletransform.composeTransform(viewbox_transform, transform)
 
     return transform
+
+def get_correction_transform(node):
+    """Get a transform to apply to new siblings of this SVG node"""
+
+    # if we want to place our new nodes in the same group/layer as this node,
+    # then we'll need to factor in the effects of any transforms set on
+    # the parents of this node.
+
+    # we can ignore the transform on the node itself since it won't apply
+    # to the objects we add
+    transform = get_node_transform(node.getparent())
+
+    # now invert it, so that we can position our objects in absolute
+    # coordinates
+    transform = simpletransform.invertTransform(transform)
+
+    return simpletransform.formatTransform(transform)