87 lines
3.6 KiB
Python
87 lines
3.6 KiB
Python
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#! /usr/bin/env python3
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from math import sin, cos, sqrt, asin, pi, ceil
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import inkex
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from Path import Path
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from Pattern import Pattern
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from Kresling import Kresling
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class Kresling_Full(Kresling):
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def __init__(self):
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Kresling.__init__(self) # Must be called in order to parse common options
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self.add_argument('--measure_value', type=float, default=10.0, help="Length")
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self.add_argument('--measure_type', default=60, help="Type of length")
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self.add_argument('--parameter_type', default=60, help="Type of parameter")
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self.add_argument('--radial_ratio', type=float, default=0.5, help="Radial ratio")
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self.add_argument('--angle_ratio', type=float, default=0.5, help="Anle ratio")
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self.add_argument('--lambdatheta', type=float, default=45, help="lambdatheta")
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def generate_path_tree(self):
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""" Convert radial to angular ratio, then call regular Kresling constructor
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"""
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n = self.options.sides
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theta = pi*(n-2)/(2*n)
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# define ratio parameter
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parameter = self.options.parameter_type
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if parameter == 'radial_ratio':
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radial_ratio = self.options.radial_ratio
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max_radial_ratio = sin((pi/4)*(1. - 2./n))
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if radial_ratio > max_radial_ratio:
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inkex.errormsg(_("For polygon of {} sides, the maximal radial ratio is = {}".format(n, max_radial_ratio)))
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radial_ratio = max_radial_ratio
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self.options.angle_ratio = 1 - 2*n*asin(radial_ratio)/((n-2)*pi)
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elif parameter == 'lambdatheta':
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lambdatheta = self.options.lambdatheta
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angle_min = 45. * (1 - 2. / n)
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angle_max = 2 * angle_min
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if lambdatheta < angle_min:
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inkex.errormsg(_(
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"For polygon of {} sides, phi must be between {} and {} degrees, \nsetting lambda*theta = {}\n".format(
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n, angle_min, angle_max, angle_min)))
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lambdatheta = angle_min
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elif lambdatheta > angle_max:
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inkex.errormsg(_(
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"For polygon of {} sides, phi must be between {} and {} degrees, \nsetting lambda*theta = {}\n".format(
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n, angle_min, angle_max, angle_max)))
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lambdatheta = angle_max
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self.options.angle_ratio = lambdatheta * n / (90. * (n - 2.))
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# define some length
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mtype = self.options.measure_type
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mvalue = self.options.measure_value
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angle_ratio = self.options.angle_ratio
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if mtype == 'a':
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radius = 0.5*mvalue / (sin(pi/n))
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if mtype == 'b':
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A = cos(theta*(1-angle_ratio))
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B = sin(pi/n)
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C = cos(theta*angle_ratio)
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radius = 0.5*mvalue / sqrt(A**2 + B**2 - 2*A*B*C)
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elif mtype == 'l':
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radius = 0.5*mvalue/cos(theta*(1-angle_ratio))
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elif mtype == 'radius_external':
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radius = mvalue
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elif mtype == 'radius_internal':
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radius = mvalue/(sin(theta*(1-angle_ratio)))
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elif mtype == 'diameter_external':
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radius = 0.5*mvalue
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elif mtype == 'diameter_internal':
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radius = 0.5*mvalue/sin(theta*(1-angle_ratio))
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# inkex.errormsg(_("Value = {}, Mode = {}, Radius = {}".format(mvalue, mtype, radius)))
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if self.options.pattern == 'mirrowed':
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self.options.mirror_cells = True
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else:
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self.options.mirror_cells = False
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self.options.radius = radius
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Kresling.generate_path_tree(self)
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if __name__ == '__main__':
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Kresling_Full().run()
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