mightyscape-1.2/extensions/fablabchemnitz/parabola_2/parabola_2.py

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#!/usr/bin/env python3
#
# 7/9/2021 - v.2.0
#
# Copyright (C) 2021 Reginald Waters opensourcebear@nthebare.com
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
"""
This extension renders a wireframe shape and then draws lines to form a parabola
shape.
The height and width are independently variable. The number of lines will change
the density of the end product.
# Triangle has 3 sides and the sum of the 3 angles is 180 degrees
# (sides - 2) * 180
# This can be 60/60/60 or 90/45/45
# Square has 4 sides and the sum of 4 angles is 360 degrees
# (sides - 2) * 180
# 90/90/90/90
# Pentagon has 5 sides and the sum of 5 angels is 540 degrees
# (sides - 2) * 180
# 108/108/108/108/108
...
"""
import inkex
from inkex import turtle as pturtle
class Parabola2(inkex.GenerateExtension):
container_label = 'Parabola 2'
def add_arguments(self, pars):
pars.add_argument("--length", type=int, default=300, help="Side Length")
pars.add_argument("--segments", type=int, default=10, help="Number of line segments")
pars.add_argument("--shape", default="square")
sideopts = [
(1,2),(1,3),(1,4),(1,5),(1,6),(1,7),(1,8),
(2,3),(2,4),(2,5),(2,6),(2,7),(2,8),
(3,4),(3,5),(3,6),(3,7),(3,8),
(4,5),(4,6),(4,7),(4,8),
(5,6),(5,7),(5,8),
(6,7),(6,8),
(7,8)]
def generate(self):
sl = self.options.length
sc = self.options.segments
shape = self.options.shape
cp = self.svg.namedview.center # Center Point
sp = (cp[0] + (sl / 2), cp[1] + (sl / 2)) # Start Point
cords = []
def mapshape(sides, sl, sc, sp):
exteriorAngle = 360/sides
movement = sl / sc
tur.setpos(sp)
for i in range(sides):
sidecords = []
tl = 0 # total length
while tl < sl:
sidecords.append(tur.getpos())
tur.forward(movement)
tl += movement
# sidecords.append(tur.getpos())
tur.right(exteriorAngle)
cords.append(sidecords)
return cords
def mapcross(sl, sc, sp):
movement = sl / sc
tur.setpos(sp)
sidecords = []
tl = 0
tur.forward(sl)
while tl < sl:
tur.backward(movement)
sidecords.append(tur.getpos())
tur.right(90)
def drawshape(cords):
tur.setpos(cords[0][0])
for i in range(len(cords)):
# tur.pd()
# tur.setpos(cords[i][-1])
# tur.pu()
for side in range(len(cords)):
for cord in range(len(cords[0])):
if side == (len(cords) - 1):
tur.setpos(cords[side][cord])
tur.pd()
if cord != (len(cords[0])):
tur.setpos(cords[0][cord])
tur.pu()
else:
tur.setpos(cords[side][cord])
tur.pd()
tur.setpos(cords[side + 1][cord])
tur.pu()
tur.pu()
tur = pturtle.pTurtle()
tur.pu()
if shape == "triangle":
sides = 3
mapshape(sides, sl, sc, sp)
drawshape(cords)
elif shape == "square":
sides = 4
mapshape(sides, sl, sc, sp)
drawshape(cords)
elif shape == "pentagon":
sides = 5
mapshape(sides, sl, sc, sp)
drawshape(cords)
elif shape == "hexagon":
sides = 6
mapshape(sides, sl, sc, sp)
drawshape(cords)
elif shape == "septagon":
sides = 7
mapshape(sides, sl, sc, sp)
drawshape(cords)
elif shape == "octagon":
sides = 8
mapshape(sides, sl, sc, sp)
drawshape(cords)
style = inkex.Style({
'stroke-linejoin': 'miter', 'stroke-width': str(self.svg.unittouu('1px')),
'stroke-opacity': '1.0', 'fill-opacity': '1.0',
'stroke': '#000000', 'stroke-linecap': 'butt',
'fill': 'none'
})
return inkex.PathElement(d=tur.getPath(), style=str(style))
if __name__ == "__main__":
Parabola2().run()