378 lines
17 KiB
Python
378 lines
17 KiB
Python
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#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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import numpy as np
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from math import pi, sin, cos, tan, asin, acos, atan, sqrt
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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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# Select name of class, inherits from Pattern
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# TODO:
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# 1) Implement __init__ method to get all custom options and then call Pattern's __init__
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# 2) Implement generate_path_tree to define all of the desired strokes
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MIN = 0.0001
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class Bendy_Straw(Pattern):
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def __init__(self):
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""" Constructor
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"""
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Pattern.__init__(self) # Must be called in order to parse common options
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# save all custom parameters defined on .inx file
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self.add_argument('--pattern', type=self.str, default='bendy_straw')
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self.add_argument('--pattern_type', type=self.str, default='origami')
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self.add_argument('--parameter_type', type=self.str, default='angles')
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self.add_argument('--n', type=self.int, default=6)
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self.add_argument('--lines', type=self.int, default=3)
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self.add_argument('--radius', type=self.float, default=25.0)
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# self.add_argument('--attachment_length', type=self.float, default=3.0)
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# self.add_argument('--attachment_length', type=self.int, default=20)
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self.add_argument('--radial_ratio', type=self.float, default=0.75)
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# self.add_argument('--alpha1', type=self.float, default=45.0)
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# self.add_argument('--alpha2', type=self.float, default=45.0)
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self.add_argument('--alpha1', type=self.int, default=45)
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self.add_argument('--alpha2', type=self.int, default=35)
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self.add_argument('--h1', type=self.float, default=1)
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self.add_argument('--h2', type=self.float, default=2)
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self.add_argument('--vertex_base_outer_bool', type=self.bool, default=False)
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self.add_argument('--vertex_base_inner_bool', type=self.bool, default=False)
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self.add_argument('--vertex_radius_outer_bool', type=self.bool, default=False)
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self.add_argument('--vertex_radius_inner_bool', type=self.bool, default=False)
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self.add_argument('--add_attachment', type=self.bool, default=False)
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# slot options for support ring
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self.add_argument('--base_height', type=self.float, default=5.0)
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self.add_argument('--add_base_slot', type=self.bool, default=False)
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self.add_argument('--center_base_slot', type=self.bool, default=False)
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self.add_argument('--base_slot_height', type=self.float, default=3.0)
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self.add_argument('--base_slot_width', type=self.float, default=3.0)
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self.add_argument('--distance', type=self.float, default=3.0)
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self.add_argument('--add_distance_slot', type=self.bool, default=False)
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self.add_argument('--distance_slot_height', type=self.float, default=3.0)
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self.add_argument('--distance_slot_width', type=self.float, default=3.0)
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def generate_path_tree(self):
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""" Specialized path generation for your origami pattern
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"""
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# retrieve conversion factor for selected unit
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unit_factor = self.calc_unit_factor()
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vertex_radius = self.options.vertex_radius * unit_factor
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# retrieve saved parameters, and apply unit factor where needed
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pattern_type = self.options.pattern_type
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n = self.options.n
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lines = self.options.lines
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radial_ratio = self.options.radial_ratio
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R = self.options.radius * unit_factor
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distance = self.options.distance * unit_factor
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base_height = self.options.base_height * unit_factor
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# add_attachment = self.options.add_attachment
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# attachment_length = self.options.attachment_length * unit_factor
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r = R * radial_ratio
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if (self.options.parameter_type == 'angles'):
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alpha1 = self.options.alpha1 * pi / 180
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alpha2 = self.options.alpha2 * pi / 180
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elif (self.options.parameter_type == 'heights'):
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alpha1 = atan(self.options.h1 * unit_factor / (R - r))
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alpha2 = atan(self.options.h2 * unit_factor / (R - r))
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# calculating pattern parameters
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l1 = (R - r) / cos(alpha1)
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l2 = (R - r) / cos(alpha2)
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A = 2 * R * sin(pi / n)
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# attachment_length = 0.01 * self.options.attachment_length * A
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a = A * radial_ratio
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dx = (A - a) / 2
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beta1 = acos(cos(alpha1) * sin(pi / n))
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beta2 = acos(cos(alpha2) * sin(pi / n))
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b1 = l1 * sin(beta1)
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b2 = l2 * sin(beta2)
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height = (b1 + b2) * lines + distance * (lines - 1)
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if self.options.add_attachment: n = n+1
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#
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# big horizontal mountains grid
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#
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mountain_horizontal_stroke = Path([(0, base_height), (A * n, base_height)], 'm')
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horizontal_grid_mountain = []
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for i in range(1, lines):
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horizontal_grid_mountain.append(
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mountain_horizontal_stroke + (0, distance * (i - 1) + b1 * (i + 0) + b2 * (i + 0)))
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horizontal_grid_mountain.append(
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mountain_horizontal_stroke + (0, distance * (i + 0) + b1 * (i + 0) + b2 * (i + 0)))
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if distance < MIN:
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horizontal_grid_mountain = horizontal_grid_mountain[::2]
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if base_height > MIN:
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horizontal_grid_mountain.insert(0, mountain_horizontal_stroke)
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horizontal_grid_mountain.append(
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mountain_horizontal_stroke + (0, distance * (lines - 1) + b1 * lines + b2 * lines))
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# reverse every other horizontal stroke for faster laser-cutting
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for i in range(len(horizontal_grid_mountain)):
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if (i % 2 == 0):
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horizontal_grid_mountain[i].points.reverse()
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#
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# diamond shapes
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#
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# full diamond patterns styles, depending on pattern type
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style_diag_left = 'm'
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style_diag_right = 'm'
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style_diag = 'v'
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style_vert = 'm'
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style_hori_left = 'm'
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style_hori_right = 'm'
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if pattern_type == 'origami' or pattern_type == 'origami_bent':
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style_hori_left = 'v'
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style_diag_left = 'n'
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style_diag_right = 'v'
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elif pattern_type == 'origami2':
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style_hori_right = 'v'
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style_diag_left = 'v'
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style_diag_right = 'n'
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elif pattern_type == 'kirigami1':
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style_vert = 'v'
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style_hori_left = 'c'
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style_hori_right = 'c'
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elif pattern_type == 'kirigami2':
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style_diag_left = 'c'
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style_diag_right = 'c'
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style_hori_left = 'n'
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style_hori_right = 'n'
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style_vert = 'n'
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# diamond pattern with strokes of different styles
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stroke_base = Path([(0, 0), (0, base_height)], 'm')
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diamond_diagonals_left = Path([(0, base_height), (-dx, base_height + b1), (0, base_height + b1 + b2)],
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style_diag_left)
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diamond_diagonals_right = Path([(0, base_height + b1 + b2), (dx, base_height + b1), (0, base_height)],
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style_diag_right)
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diamond_vertical = Path([(0, base_height), (0, base_height + b1 + b2)], style_vert)
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stroke_distance = Path([(0, base_height + b1 + b2), (0, distance + base_height + b1 + b2)], 'm')
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diamond_horizontal_left = Path([(-dx, 0), (0, 0)], style_hori_left)
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diamond_horizontal_right = Path([(0, 0), (dx, 0)], style_hori_right)
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diamond = [diamond_diagonals_left, diamond_diagonals_right, diamond_vertical]
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if pattern_type == 'origami_bent':
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bent_diagonal = Path([(0, base_height + b1 + b2), (dx, base_height + b1), (0, base_height)], 'm')
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bent_horizontal = Path([(0, 0), (dx, 0)], 'v')
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line_bent = []
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# drawing lines with the diamond shapes
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line_left = []
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line_middle = []
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line_right = []
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if base_height > MIN:
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line_middle.append(stroke_base)
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if pattern_type == 'origami_bent':
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line_bent.append(stroke_base)
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for i in range(lines):
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delta = (0, (distance + b1 + b2) * i)
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if pattern_type != 'kirigami2':
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line_left.append(diamond_diagonals_right + delta)
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line_middle = line_middle + Path.list_add(diamond, delta)
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if pattern_type != 'kirigami2':
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line_right.append(diamond_diagonals_left + delta)
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if distance > MIN and i < lines - 1:
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line_middle.append(stroke_distance + delta)
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if pattern_type == 'origami_bent':
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line_bent = line_bent + [bent_diagonal + delta]
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if distance > MIN and i < lines - 1:
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line_bent.append(stroke_distance + delta)
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if base_height > MIN:
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line_middle.append(stroke_base + (0, base_height + height))
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if pattern_type == 'origami_bent':
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line_bent.append(stroke_base + (0, base_height + height))
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# creating full diamond patterns
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line_left = line_left[::-1]
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diamond_patterns_full = [line_left]
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for i in range(n - 1):
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delta = (A * (i + 1), 0)
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if pattern_type == 'origami_bent' and i == 2:
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diamond_patterns_full.append(Path.list_add(line_bent, delta))
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else:
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diamond_patterns_full.append(Path.list_add(line_middle, delta))
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diamond_patterns_full.append(Path.list_add(line_right, (A * n, 0)))
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#
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# small horizontal alternate style grid
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#
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valley_points = [(dx, 0),
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(dx + a, 0)]
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valley_stroke = Path(valley_points, 'v')
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if pattern_type == 'kirigami2':
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horizontal_line = []
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else:
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horizontal_line = [diamond_horizontal_right + (0, 0)]
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for i in range(n):
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if not (pattern_type == 'origami_bent' and i == 3):
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horizontal_line.append(valley_stroke + ((a + 2 * dx) * i, 0))
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if (pattern_type != 'kirigami2'):
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if not (pattern_type == 'origami_bent' and i == 3):
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horizontal_line.append(diamond_horizontal_left + (A + (a + 2 * dx) * i, 0))
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if pattern_type == 'origami_bent' and i==2:
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horizontal_line.append(bent_horizontal + (A + (a + 2 * dx) * i, 0))
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elif i < n - 1:
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horizontal_line.append(diamond_horizontal_right + (A + (a + 2 * dx) * i, 0))
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horizontal_grid_alternate = []
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for i in range(lines):
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horizontal_grid_alternate.append(
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Path.list_add(horizontal_line, (0, base_height + distance * (i + 0) + b1 * (i + 1) + b2 * (i + 0))))
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# reverse every other horizontal stroke for faster laser-cutting
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for i in range(len(horizontal_grid_alternate)):
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if (i % 2 == 0):
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horizontal_grid_alternate[i] = Path.list_invert(horizontal_grid_alternate[i])
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# for i in range(len(horizontal_grid_alternate)):
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# inkex.debug(i)
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# Path.debug_points(horizontal_grid_alternate[i])
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# inkex.debug('\n')
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#
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# edge drawing
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#
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self.edge_points = [(0, 0)]
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self.edge_points.append((A * n, 0))
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# rectangles for attachments at base and between cells
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# add upper base attachment
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self.edge_points.append((A * n, base_height))
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# draw attachment between cells and inside cells
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for i in range(lines):
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self.edge_points.append((A * n + 0, base_height + (b1 + b2) * (i + 0) + distance * i))
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if pattern_type == 'kirigami2':
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self.edge_points.append((A * n - dx, base_height + b1 * (i + 1) + (b2 + distance) * i))
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self.edge_points.append((A * n + 0, base_height + (b1 + b2) * (i + 1) + distance * i))
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self.edge_points.append((A * n, height + 2 * base_height))
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self.edge_points.append((0, height + 2 * base_height))
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# if full kirigami selected, cut left side next to cells
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if pattern_type == 'kirigami2':
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for i in range(lines):
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self.edge_points.append((0, height + base_height - (b1 + b2) * (i + 0) - distance * i))
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self.edge_points.append((dx, height + base_height - b2 * (i + 1) - (b1 + distance) * i))
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self.edge_points.append((0, height + base_height - (b1 + b2) * (i + 1) - distance * i))
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#
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# slots drawing
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#
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center_slot = self.options.center_base_slot
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base_slots = []
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if self.options.add_base_slot:
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base_slot_height = self.options.base_slot_height
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base_slot_width = self.options.base_slot_width
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if base_slot_height > base_height or base_slot_width > A:
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inkex.debug('Base slot dimensions are too big')
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base_slot_height = min(base_height, base_slot_height)
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base_slot_width = min(A, base_slot_width)
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if base_slot_height > 0 and base_slot_width > 0:
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points = [(0, 0),
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(0, base_slot_height),
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(base_slot_width, base_slot_height),
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(base_slot_width, 0,)]
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base_slot = Path(points, 'c', closed=True) + ((A - base_slot_width)/2, (base_height - base_slot_height)/(1+center_slot))
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base_slots_line = []
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for i in range(n):
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base_slots_line.append(base_slot + (A*i, 0))
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base_slots = [base_slots_line]
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base_slots.append(Path.list_add(base_slots_line, (0, height+base_slot_height + (base_height - base_slot_height)*center_slot)))
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dist_slots = []
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if self.options.add_distance_slot:
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dist_slot_height = self.options.distance_slot_height
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dist_slot_width = self.options.distance_slot_width
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if dist_slot_height > distance or dist_slot_width > A:
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inkex.debug('Dimensions of slots between cells are too big')
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dist_slot_height = min(distance, dist_slot_height)
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dist_slot_width = min(A, dist_slot_width)
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if dist_slot_height > 0 and dist_slot_width > 0:
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points = [(0, 0),
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(0, dist_slot_height),
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(dist_slot_width, dist_slot_height),
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(dist_slot_width, 0,)]
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dist_slot = Path(points, 'c', closed=True) + ((A - dist_slot_width)/2, base_height+b1+b2 + (distance - dist_slot_height)/2)
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|
dist_slots_line = []
|
||
|
|
for i in range(n):
|
||
|
|
dist_slots_line.append(dist_slot + (A*i, 0))
|
||
|
|
|
||
|
|
for i in range(lines-1):
|
||
|
|
dist_slots.append(Path.list_add(dist_slots_line, (0, i*(b1+b2+distance))))
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
# sending lines to draw
|
||
|
|
self.path_tree = [horizontal_grid_mountain, horizontal_grid_alternate, diamond_patterns_full, base_slots, dist_slots]
|
||
|
|
|
||
|
|
#
|
||
|
|
# vertices drawing
|
||
|
|
#
|
||
|
|
# outer base vertices?
|
||
|
|
if self.options.vertex_base_outer_bool:
|
||
|
|
self.vertex_points = self.vertex_points + [(A * i, height + base_height * 2) for i in range(n + 1)]
|
||
|
|
self.vertex_points = self.vertex_points + [(A*i, 0) for i in range(n+1)]
|
||
|
|
|
||
|
|
# inner base vertices?
|
||
|
|
if self.options.vertex_base_inner_bool:
|
||
|
|
self.vertex_points = self.vertex_points + [(A*i, base_height) for i in range(n+1)]
|
||
|
|
self.vertex_points = self.vertex_points + [(A*i, height+base_height) for i in range(n+1)]
|
||
|
|
for j in range(lines-1):
|
||
|
|
self.vertex_points = self.vertex_points + [(A*i, base_height+((b1+b2)*(j+1))+distance*j) for i in range(n+1)] + \
|
||
|
|
[(A*i, base_height+((b1+b2)*(j+1))+distance*(j+1)) for i in range(n+1)]
|
||
|
|
|
||
|
|
# radius vertices?
|
||
|
|
if self.options.vertex_radius_outer_bool and pattern_type != 'kirigami2':
|
||
|
|
for j in range(lines):
|
||
|
|
i_range = list(range(3)) + list(range(3+(pattern_type=='origami_bent'), n + 1))
|
||
|
|
self.vertex_points = self.vertex_points + [(A * i, base_height + b1*(j+1) + (b2+distance)*j) for i in i_range]
|
||
|
|
if self.options.vertex_radius_inner_bool:
|
||
|
|
for j in range(lines):
|
||
|
|
if pattern_type != 'origami2':
|
||
|
|
# pass
|
||
|
|
self.vertex_points = self.vertex_points + [(dx + A * i, base_height + b1*(j+1) + (b2+distance)*j) for i in range(n)]
|
||
|
|
if pattern_type[:7] != 'origami':
|
||
|
|
# pass
|
||
|
|
self.vertex_points = self.vertex_points + [(-dx + A * (i + 1), base_height + b1 * (j + 1) + (b2 + distance) * j) for i in range(n)]
|
||
|
|
# for j in range(lines):
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
# self.vertex_points = self.vertex_points + vertices_base
|
||
|
|
|
||
|
|
# self.vertex_points = self.vertex_points + self.edge_points
|
||
|
|
# diamond_patterns_full_simple = Path.list_simplify(diamond_patterns_full)
|
||
|
|
# for path in diamond_patterns_full:
|
||
|
|
# # path = Path.list_simplify(path)
|
||
|
|
# # path = Path.list_simplify(path[0])
|
||
|
|
# if path.style != 'n':
|
||
|
|
# self.vertex_points = self.vertex_points + path.points
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#
|
||
|
|
|
||
|
|
# Main function, creates an instance of the Class and calls self.draw() to draw the origami on inkscape
|
||
|
|
# self.draw() is either a call to inkex.affect() or to svg.run(), depending on python version
|
||
|
|
if __name__ == '__main__':
|
||
|
|
e = Bendy_Straw() # remember to put the name of your Class here!
|
||
|
|
e.draw()
|