kopia lustrzana https://github.com/inkstitch/inkstitch
48 wiersze
1.6 KiB
Python
48 wiersze
1.6 KiB
Python
import simpletransform
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import cubicsuperpath
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from .units import get_viewbox_transform
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def apply_transforms(path, node):
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transform = get_node_transform(node)
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# apply the combined transform to this node's path
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simpletransform.applyTransformToPath(transform, path)
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return path
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def get_node_transform(node):
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# start with the identity transform
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transform = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]
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# this if is because sometimes inkscape likes to create paths outside of a layer?!
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if node.getparent() is not None:
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# combine this node's transform with all parent groups' transforms
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transform = simpletransform.composeParents(node, transform)
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# add in the transform implied by the viewBox
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viewbox_transform = get_viewbox_transform(node.getroottree().getroot())
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transform = simpletransform.composeTransform(viewbox_transform, transform)
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return transform
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def get_correction_transform(node, child=False):
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"""Get a transform to apply to new siblings or children of this SVG node"""
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# if we want to place our new nodes in the same group/layer as this node,
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# then we'll need to factor in the effects of any transforms set on
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# the parents of this node.
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if child:
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transform = get_node_transform(node)
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else:
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# we can ignore the transform on the node itself since it won't apply
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# to the objects we add
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transform = get_node_transform(node.getparent())
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# now invert it, so that we can position our objects in absolute
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# coordinates
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transform = simpletransform.invertTransform(transform)
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return simpletransform.formatTransform(transform)
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