diff options
Diffstat (limited to 'lib/svg')
| -rw-r--r-- | lib/svg/__init__.py | 2 | ||||
| -rw-r--r-- | lib/svg/path.py | 17 |
2 files changed, 18 insertions, 1 deletions
diff --git a/lib/svg/__init__.py b/lib/svg/__init__.py index 8e846555..429e6b5e 100644 --- a/lib/svg/__init__.py +++ b/lib/svg/__init__.py @@ -1,3 +1,3 @@ from .svg import color_block_to_point_lists, render_stitch_plan from .units import * -from .path import apply_transforms, get_node_transform +from .path import apply_transforms, get_node_transform, get_correction_transform diff --git a/lib/svg/path.py b/lib/svg/path.py index 2d9c0ff3..00e2c269 100644 --- a/lib/svg/path.py +++ b/lib/svg/path.py @@ -23,3 +23,20 @@ def get_node_transform(node): 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) |