35 lines
1.5 KiB
Python
35 lines
1.5 KiB
Python
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#!/usr/bin/env python3
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'''
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This tool is a helper to adjust the document border including an offset value, which is added.
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Sending vector data to Epilog Dashboard often results in trimmed paths. This leads to wrong geometry where the laser misses to cut them.
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So we add a default (small) amount of 0.05 doc units to expand the document's canvas
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'''
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import inkex
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from inkex import Transform
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class BBoxAdjust(inkex.EffectExtension):
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def effect(self):
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offset = 1.0 #in documents' units
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# create a new bounding box and get the bbox size of all elements of the document (we cannot use the page's bbox)
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bbox = inkex.BoundingBox()
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for element in self.svg.root.getchildren():
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if isinstance (element, inkex.ShapeElement):
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bbox += element.bounding_box()
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# adjust the viewBox to the bbox size and add the desired offset
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self.document.getroot().attrib['viewBox'] = f'{-offset} {-offset} {bbox.width + offset * 2} {bbox.height + offset * 2}'
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self.document.getroot().attrib['width'] = f'{bbox.width + offset * 2}' + self.svg.unit
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self.document.getroot().attrib['height'] = f'{bbox.height + offset * 2}' + self.svg.unit
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# translate all elements to fit the adjusted viewBox
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mat = Transform("translate(%f, %f)" % (-bbox.left,-bbox.top)).matrix
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for element in self.svg.root.getchildren():
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if isinstance (element, inkex.ShapeElement):
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element.transform = Transform(mat) * element.transform
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if __name__ == '__main__':
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BBoxAdjust().run()
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