56 lines
2.3 KiB
Python
56 lines
2.3 KiB
Python
#!/usr/bin/env python3
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from io import StringIO
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import inkex
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from lxml import etree
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class SliderElectrodes(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument("-c", "--count", type=int, default=5, help="Number of electrodes")
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pars.add_argument("-s", "--spikes", type=int, default=5, help="Number of spikes")
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def genPathString(self, bounds, spikeWidth, first=False, last=False):
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s = StringIO()
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cx = bounds[0]
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cy = bounds[1]
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stepx = spikeWidth
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stepy = (bounds[3] - bounds[1]) / (2.0 * self.options.spikes)
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s.write(" M %f, %f " % (bounds[0], bounds[1]))
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if first:
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s.write(" L %f, %f " % (bounds[0], bounds[3]))
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else:
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for i in range(self.options.spikes):
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s.write(" L %f, %f " % (bounds[0] + stepx, bounds[1] + (2 * i + 1) * stepy))
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s.write(" L %f, %f " % (bounds[0], bounds[1] + (2 * i + 2) * stepy))
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if last:
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s.write(" L %f, %f " % (bounds[2], bounds[3]))
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s.write(" L %f, %f " % (bounds[2], bounds[1]))
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else:
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s.write(" L %f, %f " % (bounds[2] - stepx, bounds[3]))
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for i in range(self.options.spikes):
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s.write(" L %f, %f " % (bounds[2], bounds[3] - (2 * i + 1) * stepy))
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s.write(" L %f, %f " % (bounds[2] - stepx, bounds[3] - (2 * i + 2) * stepy))
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s.write(" Z ")
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return s.getvalue()
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def effect(self):
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svg = self.document.getroot()
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width = self.svg.unittouu(self.document.getroot().get('width'))
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height = self.svg.unittouu(self.document.getroot().get('height'))
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group = etree.SubElement(self.svg.get_current_layer(), 'g', {inkex.addNS('label', 'inkscape') : 'Slider electrodes'})
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eWidth = width / self.options.count
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spikeWidth = 0.6 * eWidth
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for eid in range(self.options.count):
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if eid == 0:
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path = self.genPathString((eid * eWidth, 0, (eid + 1) * eWidth + 0.4 * spikeWidth, height), spikeWidth, first=True)
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elif eid == self.options.count - 1:
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path = self.genPathString((eid * eWidth - 0.4 * spikeWidth, 0, (eid + 1) * eWidth, height), spikeWidth, last=True)
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else:
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path = self.genPathString((eid * eWidth - 0.4 * spikeWidth, 0, (eid + 1) * eWidth + 0.4 * spikeWidth, height), spikeWidth)
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e = etree.SubElement(group, inkex.addNS('path', 'svg'), {'style':str(inkex.Style({'stroke':'none','fill' :'#000000'})),'d' : path})
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if __name__ == '__main__':
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effect = SliderElectrodes().run() |