73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
#!/usr/bin/env python3
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# coding=utf-8
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#
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# Copyright (C) 2020 Dylan Simon, dylan@dylex.net
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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"""
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Perform fixed-depth IFS repeated duplicate-and-transform.
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"""
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import inkex
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class IFSFractals(inkex.EffectExtension):
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NXFORM = 5
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XFORM_PARAMS = list("ABCDEF")
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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pars.add_argument("--iter", type=int, default=3, help="number of iterations")
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for i in range(self.NXFORM):
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pars.add_argument("--xform%d"%i, type=inkex.Boolean, default=False, help="enable transformation %d"%i)
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for p in self.XFORM_PARAMS:
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pars.add_argument("--%s%d"%(p,i), type=float, help="transformation matrix %d %s"%(i,p))
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def effect(self):
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xforms = []
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for i in range(self.NXFORM):
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if getattr(self.options,'xform%d'%i):
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t = [getattr(self.options,"%s%d"%(p,i)) for p in self.XFORM_PARAMS]
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xforms.append(inkex.Transform(t))
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if not xforms:
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inkex.errormsg(_('There are no transforms to apply'))
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return False
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if not self.svg.selected:
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inkex.errormsg(_('There is no selection to duplicate'))
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return False
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nodes = self.svg.selected.values()
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grp = inkex.Group('IFS')
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layer = self.svg.get_current_layer().add(grp)
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for i in range(self.options.iter):
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n = []
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for node in nodes:
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for x in xforms:
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d = node.copy()
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d.transform = x * d.transform
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n.append(d)
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g = inkex.Group('IFS iter %d'%i)
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g.add(*n)
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grp.add(g)
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nodes = n
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return True
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if __name__ == '__main__':
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IFSFractals().run()
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