FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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fix scale to size

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This commit is contained in:
Mario Voigt 2021-11-02 01:32:44 +01:00
parent 04062e1841
commit 2d3c5e7091
1 changed files with 38 additions and 19 deletions
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57
extensions/fablabchemnitz/scale_to_size/scale_to_size.py
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@ -23,12 +23,20 @@ class ScaleToSize(inkex.EffectExtension):
def effect(self):
unit_factor = 1.0 / self.svg.uutounit(1.0,self.options.unit)
for id, node in self.svg.selected.items():
#get recent XY coordinates (top left corner of the bounding box)
bbox = node.bounding_box()
new_horiz_scale = self.options.expected_size * unit_factor / bbox.width
new_vert_scale = self.options.expected_size * unit_factor / bbox.height
scale_factor = self.svg.unittouu("1px")
#get recent XY coordinates (top left corner of the bounding box)
for element in self.svg.selected.values():
if isinstance (element, inkex.Rectangle) or \
isinstance (element, inkex.Circle) or \
isinstance (element, inkex.Ellipse):
bbox = element.bounding_box() * unit_factor
new_horiz_scale = self.options.expected_size * unit_factor / bbox.width / scale_factor
new_vert_scale = self.options.expected_size * unit_factor / bbox.height / scale_factor
else:
bbox = element.bounding_box()
new_horiz_scale = self.options.expected_size * unit_factor / bbox.width
new_vert_scale = self.options.expected_size * unit_factor / bbox.height
if self.options.scale_type == "Horizontal":
translation_matrix = [[new_horiz_scale, 0.0, 0.0], [0.0, 1.0, 0.0]]
@ -36,32 +44,43 @@ class ScaleToSize(inkex.EffectExtension):
translation_matrix = [[1.0, 0.0, 0.0], [0.0, new_vert_scale, 0.0]]
else: #Uniform
translation_matrix = [[new_horiz_scale, 0.0, 0.0], [0.0, new_vert_scale, 0.0]]
node.transform = Transform(translation_matrix) * node.transform
element.transform = Transform(translation_matrix) * element.composed_transform()
# now that the node moved we need to get the nodes XY coordinates again to fix them
bbox_new = node.bounding_box()
# now that the element moved we need to get the elements XY coordinates again to fix them
bbox_new = element.bounding_box()
#inkex.utils.debug(cx)
#inkex.utils.debug(cy)
#inkex.utils.debug(cx_new)
#inkex.utils.debug(cy_new)
# We remove the transformation attribute from SVG XML tree in case it's regular path. In case the node is an object like arc,circle, ellipse or star we have the attribute "sodipodi:type". Then we do not play with it's path because the size transformation will not apply (this code block is ugly)
if node.get ('sodipodi:type') is None and 'd' in node.attrib:
# We remove the transformation attribute from SVG XML tree in case it's regular path. In case the element is an object like arc,circle, ellipse or star we have the attribute "sodipodi:type". Then we do not play with it's path because the size transformation will not apply (this code block is ugly)
if element.get ('sodipodi:type') is None and 'd' in element.attrib:
#inkex.utils.debug("it's a path!")
d = node.get('d')
d = element.get('d')
p = CubicSuperPath(d)
transf = Transform(node.get("transform", None))
if 'transform' in node.attrib:
del node.attrib['transform']
transf = Transform(element.get("transform", None))
if 'transform' in element.attrib:
del element.attrib['transform']
p = Path(p).to_absolute().transform(transf, True)
node.set('d', Path(CubicSuperPath(p).to_path()))
element.set('d', Path(CubicSuperPath(p).to_path()))
#else:
#inkex.utils.debug("it's an object!")
#we perform second translation to reset the center of the path
translation_matrix = [[1.0, 0.0, bbox.left - bbox_new.left + (bbox.width - bbox_new.width)/2], [0.0, 1.0, bbox.top - bbox_new.top + (bbox.height - bbox_new.height)/2]]
node.transform = Transform(translation_matrix) * node.transform
#we perform second translation to reset the center of the path
if isinstance (element, inkex.Rectangle) or \
isinstance (element, inkex.Circle) or \
isinstance (element, inkex.Ellipse):
translation_matrix = [
[1.0, 0.0, scale_factor * (bbox.left - bbox_new.left + (bbox.width - bbox_new.width)/2)],
[0.0, 1.0, scale_factor * (bbox.top - bbox_new.top + (bbox.height - bbox_new.height)/2)]
]
else:
translation_matrix = [
[1.0, 0.0, bbox.left - bbox_new.left + (bbox.width - bbox_new.width)/2],
[0.0, 1.0, bbox.top - bbox_new.top + (bbox.height - bbox_new.height)/2]
]
element.transform = Transform(translation_matrix) * element.composed_transform()
if __name__ == '__main__':
ScaleToSize().run()