145 lines
5.6 KiB
Python
145 lines
5.6 KiB
Python
#!/bin/env python3
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#
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# Copyright (C) 2020 Marc Jeanmougin, Laurent Porcheret
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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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# Thanks to Bénédicte Cuperly for reminding me to do this and for her feedback
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""" Geography patterns """
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import math
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import inkex
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from inkex import Pattern, PathElement, Circle, Rectangle, AbortExtension
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GRAIN_V="m 0 0 10 20 10 -20"
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GRAIN_VI="m 0 20 10 -20 10 20"
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GRAIN_PLUS="M 10 0 10 20 M 0 10 20 10"
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GRAIN_X="M 0 0 20 20 M 0 20 20 0"
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class Geography(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument('--tab', default='grains_page', help='grains_page or hatches_page')
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pars.add_argument('--type', default='h', help='h|d')
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pars.add_argument('--angle', default='0', help='angle')
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pars.add_argument('--thickness', default='1', help='width')
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pars.add_argument('--spacing', default='8', help='spacing between hatches')
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pars.add_argument('--type_grain', default='grain_v', help='Shape of patterns (v^+xoO)')
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pars.add_argument('--size', default='1', help='size of grain')
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pars.add_argument('--hcolor', default=inkex.Color(255), type=inkex.Color, help='color of hatches')
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pars.add_argument('--gcolor', default=inkex.Color(255), type=inkex.Color, help='color of grains')
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def effect(self):
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#step 0: find desired id
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i=self.get_id()
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#step 1: add stuff in defs if not present
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if self.svg.getElementById(i) is None:
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#construct it
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newNode = self.svg.defs.add(Pattern())
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self.construct(newNode)
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#step 2: assign
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for node in self.svg.selection.values():
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node.style['fill'] = "url(#"+i+")"
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node.set('fill', "url(#"+i+")")
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def construct(self, node):
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if(self.options.tab == "grains_page"):
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self.construct_grain(node)
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else:
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self.construct_hatch(node)
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node.set('patternUnits', "userSpaceOnUse")
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node.set('id', self.get_id())
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def get_id(self):
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if(self.options.tab=="grains_page"):
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return "inkgeo_"+self.options.type_grain+"_"+self.options.size+"_"+str(int(self.options.gcolor))
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else:
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return "inkgeo_"+self.options.type+"_"+self.options.angle+"_"+self.options.thickness+"_"+self.options.spacing+"_"+str(int(self.options.hcolor))
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def construct_grain(self, node):
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size=str(math.sqrt(float(self.options.size)))
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node.set('width', "100")
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node.set('height', "100")
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n1=0
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n2=0
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node.style="stroke-width:4;"
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if self.options.type_grain == "grain_c" or self.options.type_grain == "grain_r":
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n1 = node.add(Circle())
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n2 = node.add(Circle())
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n1.set('cx',10)
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n1.set('cy',10)
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n1.set('r',10)
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n2.set('cx',10)
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n2.set('cy',10)
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n2.set('r',10)
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if self.options.type_grain == "grain_c":
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node.style.set_color(self.options.gcolor, 'stroke')
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node.set('fill', "none")
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else:
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node.style.set_color(self.options.gcolor, 'stroke')
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node.style.set_color(self.options.gcolor, 'fill')
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else:
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node.style.set_color(self.options.gcolor, 'stroke')
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node.set('fill', "none")
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#paths
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n1 = node.add(PathElement())
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n2 = node.add(PathElement())
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if self.options.type_grain == "grain_v":
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n1.set('d', GRAIN_V)
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n2.set('d', GRAIN_V)
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elif self.options.type_grain == "grain_m":
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n1.set('d', GRAIN_VI)
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n2.set('d', GRAIN_VI)
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elif self.options.type_grain == "grain_p":
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n1.set('d', GRAIN_PLUS)
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n2.set('d', GRAIN_PLUS)
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elif self.options.type_grain == "grain_x":
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n1.set('d', GRAIN_X)
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n2.set('d', GRAIN_X)
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n1.set('transform', "translate(5,5)scale("+size+")")
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n2.set('transform', "translate(55,55)scale("+size+")")
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node.set('patternTransform', "scale(0.1)")
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def construct_hatch(self,node):
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h = int(self.options.spacing)+int(self.options.thickness)
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node.set('width', str(h))
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node.set('patternTransform', "rotate("+self.options.angle+")")
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r = node.add(Rectangle())
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r.set('x', "0")
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r.set('y', "0")
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r.set('height', self.options.thickness)
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r.style.set_color(self.options.hcolor, 'fill')
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if self.options.type=="h":
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node.set('height',str(h))
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r.set('width', str(h))
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else:
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node.set('height',str(2*h))
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r.set('width', str(h/2))
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r2 = node.add(Rectangle())
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r2.set('x', str(h/2))
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r2.set('y', str(h))
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r2.set('width', str(h/2))
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r2.set('height', self.options.thickness)
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r2.style.set_color(self.options.hcolor, 'fill')
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if __name__ == '__main__':
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Geography().run()
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