FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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Added option to specify custom length to scale up a path to desired

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length
This commit is contained in:
Mario Voigt 2021-04-11 11:30:09 +02:00
parent a9adc3d322
commit 6b687774c7
2 changed files with 56 additions and 38 deletions
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36
extensions/fablabchemnitz/paste_length.inx
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@ -2,23 +2,27 @@
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension"> <inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<name>Scale To Path Length</name> <name>Scale To Path Length</name>
<id>fablabchemnitz.de.paste_length</id> <id>fablabchemnitz.de.paste_length</id>
<param name="tab" type="notebook"> <param name="scaleFrom" type="optiongroup" appearance="combo" gui-text="Scale From:">
<page name="pasteLength" gui-text="Paste Length"> <option value="center">Center</option>
<param name="scaleFrom" type="optiongroup" appearance="combo" gui-text="Scale From:"> <option value="topLeft">Top Left</option>
<option value="center">Center</option> <option value="topRight">Top Right</option>
<option value="topLeft">Top Left</option> <option value="bottomLeft">Bottom Left</option>
<option value="topRight">Top Right</option> <option value="bottomRight">Bottom Right</option>
<option value="bottomLeft">Bottom Left</option>
<option value="bottomRight">Bottom Right</option>
</param>
<param name="scale" type="float" gui-text="Scale Factor:">1</param>
<param name="precision" type="int" default="5" min="0" max="10" gui-text="Precision:">5</param>
</page>
<page name="desc" gui-text="Help">
<param name="pasteLengthhelp" type="description" xml:space="preserve">This effect makes the length of all the destination paths the same as that of the source path, while maintaining their shapes. The source is the topmost path in the selection. Precision field denotes the number of significant digits, to which the length is rounded.
</param>
</page>
</param> </param>
<param name="scale" type="float" precision="3" gui-text="Scale Factor:">1</param>
<param name="precision" type="int" default="5" min="0" max="10" gui-text="Precision:">5</param>
<param name="override_selection" type="bool" gui-text="Use entered length" gui-description="Use a custom length instead using the length of the first object in selection">false</param>
<param name="custom_length" type="float" min="0.001" max="99999.000" precision="3" gui-text="Custom length">100.000</param>
<param name="unit" type="optiongroup" appearance="combo" gui-text="Units">
<option value="mm">mm</option>
<option value="cm">cm</option>
<option value="in">in</option>
<option value="pt">pt</option>
<option value="px">px</option>
<option value="pc">pc</option>
</param>
<spacer/>
<label>This effect makes the length of all the destination paths the same as that of the source path (or your custom desired input length), while maintaining their shapes. The source is the topmost path in the selection. Precision field denotes the number of significant digits, to which the length is rounded. </label>
<effect> <effect>
<object-type>path</object-type> <object-type>path</object-type>
<effects-menu> <effects-menu>

58
extensions/fablabchemnitz/paste_length.py
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@ -22,8 +22,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
''' '''
import inkex import inkex
from inkex import bezier
from inkex.paths import Path, CubicSuperPath from inkex import bezier, Path, CubicSuperPath, PathElement
class PasteLengthEffect(inkex.Effect): class PasteLengthEffect(inkex.Effect):
@ -32,8 +32,10 @@ class PasteLengthEffect(inkex.Effect):
self.arg_parser.add_argument('--scale', type = float, default = '1', help = 'Additionally scale the length by') self.arg_parser.add_argument('--scale', type = float, default = '1', help = 'Additionally scale the length by')
self.arg_parser.add_argument('--scaleFrom', default = 'center', help = 'Scale Path From') self.arg_parser.add_argument('--scaleFrom', default = 'center', help = 'Scale Path From')
self.arg_parser.add_argument('--precision', type = int, default = '5', help = 'Number of significant digits') self.arg_parser.add_argument('--precision', type = int, default = '5', help = 'Number of significant digits')
self.arg_parser.add_argument("--tab", default="sampling", help="Tab") self.arg_parser.add_argument("--override_selection", type = inkex.Boolean, default = False, help = "Use a custom length instead using the length of the first object in selection")
self.arg_parser.add_argument("--custom_length", type = float, default = 100.000, help = "Custom length")
self.arg_parser.add_argument("--unit", default = "mm", help = "Units")
def scaleCubicSuper(self, cspath, scaleFactor, scaleFrom): def scaleCubicSuper(self, cspath, scaleFactor, scaleFrom):
bbox = Path(cspath).bounding_box() bbox = Path(cspath).bounding_box()
@ -86,27 +88,39 @@ class PasteLengthEffect(inkex.Effect):
scaleFrom = self.options.scaleFrom scaleFrom = self.options.scaleFrom
tolerance = 10 ** (-1 * self.options.precision) tolerance = 10 ** (-1 * self.options.precision)
selections = self.svg.selected selections = self.svg.selected
pathNodes = self.document.xpath('//svg:path',namespaces=inkex.NSS) pathNodes = self.svg.selection.filter(PathElement).values()
outStrs = [str(len(pathNodes))]
paths = [(pathNode.get('id'), CubicSuperPath(pathNode.get('d'))) for pathNode in pathNodes] paths = [(pathNode.get('id'), CubicSuperPath(pathNode.get('d'))) for pathNode in pathNodes]
if(len(paths) > 1): if self.options.override_selection is False:
srcPath = paths[-1][1] if(len(paths) > 1):
srclen = self.getLength(srcPath, tolerance) srcPath = paths[-1][1]
paths = paths[:len(paths)-1] srclen = self.getLength(srcPath, tolerance)
for key, cspath in paths: paths = paths[:len(paths)-1]
curveLen = self.getLength(cspath, tolerance) for key, cspath in paths:
curveLen = self.getLength(cspath, tolerance)
self.scaleCubicSuper(cspath, scaleFactor = scale * (srclen / curveLen), scaleFrom = scaleFrom)
try: #we wrap this in try-except because if the elements are within groups it will cause errors self.scaleCubicSuper(cspath, scaleFactor = scale * (srclen / curveLen), scaleFrom = scaleFrom)
selections[key].set('d', CubicSuperPath(cspath)) try: #we wrap this in try-except because if the elements are within groups it will cause errors
except: selections[key].set('d', CubicSuperPath(cspath))
pass except:
pass
else:
inkex.errormsg("Please select at least two paths, with the path whose \
length is to be copied at the top. You may have to convert the shape \
to path with path->Object to Path.")
else: else:
inkex.errormsg("Please select at least two paths, with the path whose \ if(len(paths) > 0):
length is to be copied at the top. You may have to convert the shape \ srclen = self.svg.unittouu(str(self.options.custom_length) + self.options.unit)
to path with path->Object to Path.") for key, cspath in paths:
curveLen = self.getLength(cspath, tolerance)
self.scaleCubicSuper(cspath, scaleFactor = scale * (srclen / curveLen), scaleFrom = scaleFrom)
try: #we wrap this in try-except because if the elements are within groups it will cause errors
selections[key].set('d', CubicSuperPath(cspath))
except:
pass
else:
inkex.errormsg("Please select at least one path. You may have to convert the shape to path with path->Object to Path.")
if __name__ == '__main__': if __name__ == '__main__':
PasteLengthEffect().run() PasteLengthEffect().run()