Source code for boxes.parts

from math import *
from boxes import vectors

[docs]def arcOnCircle(spanning_angle, outgoing_angle, r=1.0): angle = spanning_angle + 2 * outgoing_angle radius = r * sin(radians(0.5 * spanning_angle)) / sin(radians(180 - outgoing_angle - 0.5 * spanning_angle)) return angle, abs(radius)
[docs]class Parts: def __init__(self, boxes): self.boxes = boxes """ def roundKnob(self, diameter, n=20, callback=None, move=""): size = diameter+diameter/n if self.move(size, size, move, before=True): return self.moveTo(size/2, size/2) self.cc(callback, None, 0, 0) self.move(size, size, move) """ def __getattr__(self, name): return getattr(self.boxes, name)
[docs] def disc(self, diameter, hole=0, callback=None, move="", label=""): """Simple disc :param diameter: diameter of the disc :param hole: (Default value = 0) :param callback: (Default value = None) called in the center :param move: (Defaultvalue = None) """ size = diameter r = diameter / 2.0 if self.move(size, size, move, before=True, label=label): return self.moveTo(size / 2, size / 2) if hole: self.hole(0, 0, hole / 2) self.cc(callback, None, 0, 0) self.moveTo(r + self.burn, 0, 90) self.corner(360, r, tabs=6) self.move(size, size, move, label=label)
[docs] def waivyKnob(self, diameter, n=20, angle=45, hole=0, callback=None, move=""): """Disc with a waivy edge to be easier to be gripped :param diameter: diameter of the knob :param n: (Default value = 20) number of waves :param angle: (Default value = 45) maximum angle of the wave :param hole: (Default value = 0) :param callback: (Default value = None) called in the center :param move: (Defaultvalue = None) """ if n < 2: return size = diameter + pi * diameter / n if self.move(size, size, move, before=True): return self.moveTo(size / 2, size / 2) self.cc(callback, None, 0, 0) if hole: self.hole(0, 0, hole / 2) self.moveTo(diameter / 2, 0, 90-angle) a, r = arcOnCircle(360. / n / 2, angle, diameter / 2) a2, r2 = arcOnCircle(360. / n / 2, -angle, diameter / 2) for i in range(n): self.boxes.corner(a, r, tabs=(i % max(1, (n+1) // 6) == 0)) self.boxes.corner(a2, r2) self.move(size, size, move)
[docs] def concaveKnob(self, diameter, n=3, rounded=0.2, angle=70, hole=0, callback=None, move=""): """Knob with dents to be easier to be gripped :param diameter: diameter of the knob :param n: (Default value = 3) number of dents :param rounded: (Default value = 0.2) proportion of circumferen remaining :param angle: (Default value = 70) angle the dents meet the circumference :param hole: (Default value = 0) :param callback: (Default value = None) called in the center :param move: (Defaultvalue = None) """ size = diameter if n < 2: return if self.move(size, size, move, before=True): return self.moveTo(size / 2, size / 2) if hole: self.hole(0, 0, hole / 2) self.cc(callback, None, 0, 0) self.moveTo(diameter / 2, 0, 90 + angle) a, r = arcOnCircle(360. / n * (1 - rounded), -angle, diameter / 2) if abs(a) < 0.01: # avoid trying to make a straight line as an arc a, r = arcOnCircle(360. / n * (1 - rounded), -angle - 0.01, diameter / 2) for i in range(n): self.boxes.corner(a, r) self.corner(angle) self.corner(360. / n * rounded, diameter / 2, tabs= (i % max(1, (n+1) // 6) == 0)) self.corner(angle) self.move(size, size, move)
[docs] def ringSegment(self, r_outside, r_inside, angle, n=1, move=None): """Ring Segment :param r_outside: outer radius :param r_inside: inner radius :param angle: anlge the segment is spanning :param n: (Default value = 1) number of segments :param move: (Defaultvalue = None) """ space = 360 * r_inside / self.spacing n = min(n, 360 / (angle+space)) # XXX be smarter about space if self.move(r_outside, r_outside, move, True): return self.moveTo(r_outside) for i in range(n): self.polyline( 0, (angle, r_outside), 0, 90, (r_outside-r_inside, 2), 90, (angle, r_inside), 0, 90, (r_outside-r_inside, 2), 90) x, y = vectors.circlepoint(r_outside, math.radians(angle+space)) self.moveTo(y, r_outside-x, angle+space) self.move(r_outside, r_outside) return n