#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (C) 2013-2016 Florian Festi
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import math
import inspect
import argparse
import re
import abc
from boxes import gears
[docs]def getDescriptions():
d = {edge.char: edge.description for edge in globals().values()
if inspect.isclass(edge) and issubclass(edge, BaseEdge)
and edge.char}
d['j'] = d['i'] + " (other end)"
d['J'] = d['I'] + " (other end)"
d['k'] = d['i'] + " (both ends)"
d['K'] = d['I'] + " (both ends)"
d['O'] = d['o'] + ' (other end)'
d['P'] = d['p'] + ' (other end)'
d['U'] = d['u'] + ' top side'
d['v'] = d['u'] + u' for 90° lid'
d['V'] = d['u'] + u' 90° lid'
return d
[docs]class BoltPolicy(object):
"""Abstract class
Distributes (bed) bolts on a number of segments
(fingers of a finger joint)
"""
[docs] def drawbolt(self, pos):
"""Add a bolt to this segment?
:param pos: number of the finger
"""
return False
[docs] def numFingers(self, numfingers):
"""Return next smaller, possible number of fingers
:param numfingers: number of fingers to aim for
"""
return numfingers
def _even(self, numFingers):
"""
Return same or next smaller even number
:param numFingers:
"""
return (numFingers // 2) * 2
def _odd(self, numFingers):
"""
Return same or next smaller odd number
:param numFingers:
"""
if numFingers % 2:
return numFingers
else:
return numFingers - 1
[docs]class Bolts(BoltPolicy):
"""Distribute a fixed number of bolts evenly"""
def __init__(self, bolts=1):
self.bolts = bolts
[docs] def numFingers(self, numFingers):
if self.bolts % 2:
self.fingers = self._even(numFingers)
else:
self.fingers = numFingers
return self.fingers
[docs] def drawBolt(self, pos):
"""
Return if this finger needs a bolt
:param pos: number of this finger
"""
if pos > self.fingers // 2:
pos = self.fingers - pos
if pos == 0:
return False
if pos == self.fingers // 2 and not (self.bolts % 2):
return False
return (math.floor((float(pos) * (self.bolts + 1) / self.fingers) - 0.01) !=
math.floor((float(pos + 1) * (self.bolts + 1) / self.fingers) - 0.01))
#############################################################################
### Settings
#############################################################################
[docs]class Settings(object):
"""Generic Settings class
Used by different other classes to store messurements and details.
Supports absolute values and settings that grow with the thickness
of the material used.
Overload the absolute_params and relative_params class attributes with
the suported keys and default values. The values are available via
attribute access.
"""
absolute_params = {}
relative_params = {}
[docs] @classmethod
def parserArguments(cls, parser, prefix=None, **defaults):
prefix = prefix or cls.__name__[:-len("Settings")]
lines = cls.__doc__.split("\n")
# Parse doc string
descriptions = {}
r = re.compile(r"^ +\* +(\S+) +: .* : +(.*)")
for l in lines:
m = r.search(l)
if m:
descriptions[m.group(1)] = m.group(2)
group = parser.add_argument_group(lines[0] or lines[1])
group.prefix = prefix
for name, default in (sorted(cls.absolute_params.items()) +
sorted(cls.relative_params.items())):
# Handle choices
choices = None
if isinstance(default, tuple):
choices = default
t = type(default[0])
for val in default:
if (type(val) is not t or
type(val) not in (bool, int, float, str)):
raise ValueError("Type not supported: %r", val)
default = default[0]
# Overwrite default
if name in defaults:
default = defaults[name]
if type(default) not in (bool, int, float, str):
raise ValueError("Type not supported: %r", default)
if type(default) is bool:
from boxes import BoolArg
t = BoolArg()
else:
t = type(default)
group.add_argument("--%s_%s" % (prefix, name),
type=t,
action="store", default=default,
choices=choices,
help=descriptions.get(name))
def __init__(self, thickness, relative=True, **kw):
self.values = {}
for name, value in self.absolute_params.items():
if isinstance(value, tuple):
value = value[0]
if type(value) not in (bool, int, float, str):
raise ValueError("Type not supported: %r", value)
self.values[name] = value
self.thickness = thickness
factor = 1.0
if relative:
factor = thickness
for name, value in self.relative_params.items():
self.values[name] = value * factor
self.setValues(thickness, relative, **kw)
[docs] def edgeObjects(self, boxes, chars="", add=True):
"""
Generate Edge objects using this kind of settings
:param boxes: Boxes object
:param chars: sequence of chars to be used by Edge objects
:param add: add the resulting Edge objects to the Boxes object's edges
"""
edges = []
return self._edgeObjects(edges, boxes, chars, add)
def _edgeObjects(self, edges, boxes, chars, add):
for i, edge in enumerate(edges):
try:
char = chars[i]
edge.char = char
except IndexError:
pass
except TypeError:
pass
if add:
boxes.addParts(edges)
return edges
[docs] def setValues(self, thickness, relative=True, **kw):
"""
Set values
:param thickness: thickness of the material used
:param relative: (Default value = True) Do scale by thickness
:param \*\*kw: parameters to set
"""
factor = 1.0
if relative:
factor = thickness
for name, value in kw.items():
if name in self.absolute_params:
self.values[name] = value
elif name in self.relative_params:
self.values[name] = value * factor
else:
raise ValueError("Unknown parameter for %s: %s" % (
self.__class__.__name__, name))
self.checkValues()
[docs] def checkValues(self):
"""
Check if all values are in the right range. Raise ValueError if needed
"""
return
def __getattr__(self, name):
if "values" in self.__dict__ and name in self.values:
return self.values[name]
raise AttributeError
#############################################################################
### Edges
#############################################################################
[docs]class BaseEdge(object):
"""Abstract base class for all Edges"""
char = None
description = "Abstract Edge Class"
def __init__(self, boxes, settings):
self.boxes = boxes
self.ctx = boxes.ctx
self.settings = settings
def __getattr__(self, name):
"""Hack for using unalter code form Boxes class"""
return getattr(self.boxes, name)
[docs] @abc.abstractmethod
def __call__(self, length, **kw):
pass
[docs] def startwidth(self):
"""Amount of space the beginning of the edge is set below the inner space of the part """
return 0.0
[docs] def endwidth(self):
return self.startwidth()
[docs] def margin(self):
"""Space needed right of the starting point"""
return 0.0
[docs] def spacing(self):
"""Space the edge needs outside of the inner space of the part"""
return self.startwidth() + self.margin()
[docs] def startAngle(self):
"""Not yet supported"""
return 0.0
[docs] def endAngle(self):
"""Not yet supported"""
return 0.0
[docs]class Edge(BaseEdge):
"""Straight edge"""
char = 'e'
description = "Straight Edge"
positive = False
def __call__(self, length, bedBolts=None, bedBoltSettings=None, **kw):
"""Draw edge of length mm"""
if bedBolts:
# distribute the bolts aequidistantly
interval_length = length / bedBolts.bolts
if self.positive:
d = (bedBoltSettings or self.bedBoltSettings)[0]
for i in range(bedBolts.bolts):
self.hole(0.5 * interval_length,
0.5 * self.thickness, 0.5 * d)
self.edge(interval_length, tabs=
(i == 0 or i == bedBolts.bolts - 1))
else:
for i in range(bedBolts.bolts):
self.bedBoltHole(interval_length, bedBoltSettings, tabs=
(i == 0 or i == bedBolts.bolts - 1))
else:
self.edge(length, tabs=2)
[docs]class OutSetEdge(Edge):
"""Straight edge out set by one thickness"""
char = 'E'
description = "Straight Edge (outset by thickness)"
positive = True
[docs] def startwidth(self):
return self.boxes.thickness
#############################################################################
#### Gripping Edge
#############################################################################
[docs]class GripSettings(Settings):
"""Settings for GrippingEdge
Values:
* absolute_params
* style : "wave : "wave" or "bumps"
* outset : True : extend outward the straight edge
* relative (in multiples of thickness)
* depth : 0.3 : depth of the grooves
"""
absolute_params = {
"style": ("wave", "bumps"),
"outset": True,
}
relative_params = {
"depth": 0.3,
}
[docs] def edgeObjects(self, boxes, chars="g", add=True):
edges = [GrippingEdge(boxes, self)]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class GrippingEdge(BaseEdge):
description = """Corrugated edge useful as an gipping area"""
char = 'g'
[docs] def wave(self, length):
depth = self.settings.depth
grooves = int(length // (depth * 2.0)) + 1
depth = length / grooves / 4.0
o = 1 if self.settings.outset else -1
for groove in range(grooves):
self.corner(o * -90, depth)
self.corner(o * 180, depth)
self.corner(o * -90, depth)
[docs] def bumps(self, length):
depth = self.settings.depth
grooves = int(length // (depth * 2.0)) + 1
depth = length / grooves / 2.0
o = 1 if self.settings.outset else -1
if self.settings.outset:
self.corner(-90)
else:
self.corner(90)
self.edge(depth)
self.corner(-180)
for groove in range(grooves):
self.corner(180, depth)
self.corner(-180, 0)
if self.settings.outset:
self.corner(90)
else:
self.edge(depth)
self.corner(90)
[docs] def margin(self):
if self.settings.outset:
return self.settings.depth
else:
return 0.0
def __call__(self, length, **kw):
if length == 0.0:
return
getattr(self, self.settings.style)(length)
[docs]class CompoundEdge(BaseEdge):
"""Edge composed of multiple different Edges"""
description = "Compound Edge"
def __init__(self, boxes, types, lengths):
super(CompoundEdge, self).__init__(boxes, None)
self.types = [self.edges.get(edge, edge) for edge in types]
self.lengths = lengths
self.length = sum(lengths)
[docs] def startwidth(self):
return self.types[0].startwidth()
[docs] def endwidth(self):
return self.types[-1].endwidth()
[docs] def margin(self):
return max((e.margin() + e.startwidth() for e in self.types)) - self.types[0].startwidth()
def __call__(self, length, **kw):
if length and abs(length - self.length) > 1E-5:
raise ValueError("Wrong length for CompoundEdge")
lastwidth = self.types[0].startwidth()
for e, l in zip(self.types, self.lengths):
self.step(e.startwidth() - lastwidth)
e(l)
lastwidth = e.endwidth()
#############################################################################
#### Slots
#############################################################################
[docs]class Slot(BaseEdge):
"""Edge with an slot to slid another pice through """
description = "Slot"
def __init__(self, boxes, depth):
super(Slot, self).__init__(boxes, None)
self.depth = depth
def __call__(self, length, **kw):
if self.depth:
self.boxes.corner(90)
self.boxes.edge(self.depth)
self.boxes.corner(-90)
self.boxes.edge(length)
self.boxes.corner(-90)
self.boxes.edge(self.depth)
self.boxes.corner(90)
else:
self.boxes.edge(self.length)
[docs]class SlottedEdge(BaseEdge):
"""Edge with multiple slots"""
description = "Straight Edge with slots"
def __init__(self, boxes, sections, edge="e", slots=0):
super(SlottedEdge, self).__init__(boxes, Settings(boxes.thickness))
self.edge = self.edges.get(edge, edge)
self.sections = sections
self.slots = slots
[docs] def startwidth(self):
return self.edge.startwidth()
[docs] def endwidth(self):
return self.edge.endwidth()
[docs] def margin(self):
return self.edge.margin()
def __call__(self, length, **kw):
for l in self.sections[:-1]:
self.edge(l)
if self.slots:
Slot(self.boxes, self.slots)(self.settings.thickness)
else:
self.edge(self.settings.thickness)
self.edge(self.sections[-1])
#############################################################################
#### Finger Joints
#############################################################################
[docs]class FingerJointSettings(Settings):
"""Settings for Finger Joints
Values:
* absolute
* style : "rectangular" : style of the fingers
* surroundingspaces : 2 : maximum space at the start and end in multiple of normal spaces
* angle: 90 : Angle of the walls meeting
* relative (in multiples of thickness)
* space : 2.0 : space between fingers
* finger : 2.0 : width of the fingers
* width : 1.0 : width of finger holes
* edge_width : 1.0 : space below holes of FingerHoleEdge
* play : 0.0 : extra space to allow finger move in and out
"""
absolute_params = {
"style" : ("rectangular", "springs"),
"surroundingspaces": 2.0,
"angle" : 90.0,
}
relative_params = {
"space": 2.0,
"finger": 2.0,
"width": 1.0,
"edge_width": 1.0,
"play" : 0.0,
}
[docs] def checkValues(self):
if abs(self.space + self.finger) < 0.1:
raise ValueError("FingerJointSettings: space + finger must not be close to zero")
[docs] def edgeObjects(self, boxes, chars="fFh", add=True):
edges = [FingerJointEdge(boxes, self),
FingerJointEdgeCounterPart(boxes, self),
FingerHoleEdge(boxes, self),
]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class FingerJointBase:
[docs] def calcFingers(self, length, bedBolts):
space, finger = self.settings.space, self.settings.finger
fingers = int((length - (self.settings.surroundingspaces - 1) * space) //
(space + finger))
if not finger:
fingers = 0
if bedBolts:
fingers = bedBolts.numFingers(fingers)
leftover = length - fingers * (space + finger) + space
if fingers <= 0:
fingers = 0
leftover = length
return fingers, leftover
[docs] def fingerLength(self, angle):
if angle >=90:
return self.settings.thickness, 0
if angle < 0:
return math.sin(math.radians(-angle)) * self.settings.thickness, 0
# 0 to 90
a = 90 - (180-angle) / 2.0
fingerlength = self.settings.thickness * math.tan(math.radians(a))
b = 90-2*a
spacerecess = -math.sin(math.radians(b)) * fingerlength
return fingerlength, spacerecess
[docs]class FingerJointEdge(BaseEdge, FingerJointBase):
"""Finger joint edge """
char = 'f'
description = "Finger Joint"
positive = True
def __call__(self, length, bedBolts=None, bedBoltSettings=None, **kw):
positive = self.positive
s, f, thickness = self.settings.space, self.settings.finger, self.settings.thickness
p = 1 if positive else -1
fingers, leftover = self.calcFingers(length, bedBolts)
if not positive:
play = self.settings.play
f += play
s -= play
leftover -= play
self.edge(leftover / 2.0, tabs=1)
l1,l2 = self.fingerLength(self.settings.angle)
h = l1-l2
d = (bedBoltSettings or self.bedBoltSettings)[0]
for i in range(fingers):
if i != 0:
if not positive and bedBolts and bedBolts.drawBolt(i):
self.hole(0.5 * s,
0.5 * self.settings.thickness, 0.5 * d)
if positive and bedBolts and bedBolts.drawBolt(i):
self.bedBoltHole(s, bedBoltSettings)
else:
self.edge(s)
if positive and self.settings.style == "springs":
self.polyline(
0, -90 * p, 0.8*h, (90 * p, 0.2*h),
0.1 * h, 90, 0.9*h, -180, 0.9*h, 90,
f - 0.6*h,
90, 0.9*h, -180, 0.9*h, 90, 0.1*h,
(90 * p, 0.2 *h), 0.8*h, -90 * p)
else:
self.polyline(0, -90 * p, h, 90 * p, f, 90 * p, h, -90 * p)
self.edge(leftover / 2.0, tabs=1)
[docs] def margin(self):
""" """
widths = self.fingerLength(self.settings.angle)
if self.positive:
return widths[0] - widths[1]
else:
return 0
[docs] def startwidth(self):
widths = self.fingerLength(self.settings.angle)
return widths[self.positive]
[docs]class FingerJointEdgeCounterPart(FingerJointEdge):
"""Finger joint edge - other side"""
char = 'F'
description = "Finger Joint (opposing side)"
positive = False
[docs]class FingerHoles(FingerJointBase):
"""Hole matching a finger joint edge"""
def __init__(self, boxes, settings):
self.boxes = boxes
self.ctx = boxes.ctx
self.settings = settings
def __call__(self, x, y, length, angle=90, bedBolts=None, bedBoltSettings=None):
"""
Draw holes for a matching finger joint edge
:param x: position
:param y: position
:param length: length of matching edge
:param angle: (Default value = 90)
:param bedBolts: (Default value = None)
:param bedBoltSettings: (Default value = None)
"""
with self.boxes.saved_context():
self.boxes.moveTo(x, y, angle)
s, f = self.settings.space, self.settings.finger
p = self.settings.play
b = self.boxes.burn
fingers, leftover = self.calcFingers(length, bedBolts)
if self.boxes.debug:
self.ctx.rectangle(b, -self.settings.width / 2 + b,
length - 2 * b, self.settings.width - 2 * b)
for i in range(fingers):
pos = leftover / 2.0 + i * (s + f)
if bedBolts and bedBolts.drawBolt(i):
d = (bedBoltSettings or self.boxes.bedBoltSettings)[0]
self.boxes.hole(pos - 0.5 * s, 0, d * 0.5)
self.boxes.rectangularHole(pos + 0.5 * f, 0,
f+p, self.settings.width+p)
[docs]class FingerHoleEdge(BaseEdge):
"""Edge with holes for a parallel finger joint"""
char = 'h'
description = "Edge (parallel Finger Joint Holes)"
def __init__(self, boxes, fingerHoles=None, **kw):
settings = None
if isinstance(fingerHoles, Settings):
settings = fingerHoles
fingerHoles = FingerHoles(boxes, settings)
super(FingerHoleEdge, self).__init__(boxes, settings, **kw)
self.fingerHoles = fingerHoles or boxes.fingerHolesAt
def __call__(self, length, bedBolts=None, bedBoltSettings=None, **kw):
dist = self.fingerHoles.settings.edge_width
with self.saved_context():
self.fingerHoles(
0, self.burn + dist + self.settings.thickness / 2, length, 0,
bedBolts=bedBolts, bedBoltSettings=bedBoltSettings)
self.edge(length, tabs=2)
[docs] def startwidth(self):
""" """
return self.fingerHoles.settings.edge_width + self.settings.thickness
[docs]class CrossingFingerHoleEdge(Edge):
"""Edge with holes for finger joints 90° above"""
description = "Edge (orthogonal Finger Joint Holes)"
char = '|'
def __init__(self, boxes, height, fingerHoles=None, **kw):
super(CrossingFingerHoleEdge, self).__init__(boxes, None, **kw)
self.fingerHoles = fingerHoles or boxes.fingerHolesAt
self.height = height
def __call__(self, length, **kw):
self.fingerHoles(length / 2.0, self.burn, self.height)
super(CrossingFingerHoleEdge, self).__call__(length)
#############################################################################
#### Stackable Joints
#############################################################################
[docs]class StackableSettings(Settings):
"""Settings for Stackable Edges
Values:
* absolute_params
* angle : 60 : inside angle of the feet
* relative (in multiples of thickness)
* height : 2.0 : height of the feet
* width : 4.0 : width of the feet
* holedistance : 1.0 : distance from finger holes to bottom edge
"""
absolute_params = {
"angle": 60,
}
relative_params = {
"height": 2.0,
"width": 4.0,
"holedistance": 1.0,
}
[docs] def checkValues(self):
if self.angle < 20:
raise ValueError("StackableSettings: 'angle' is too small. Use value >= 20")
if self.angle > 260:
raise ValueError("StackableSettings: 'angle' is too big. Use value < 260")
[docs] def edgeObjects(self, boxes, chars="sS", add=True, fingersettings=None):
fingersettings = fingersettings or boxes.edges["f"].settings
edges = [StackableEdge(boxes, self, fingersettings),
StackableEdgeTop(boxes, self, fingersettings)]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class StackableEdge(BaseEdge):
"""Edge for having stackable Boxes. The Edge creates feet on the bottom
and has matching recesses on the top corners."""
char = "s"
description = "Stackable (bottom, finger joint holes)"
bottom = True
def __init__(self, boxes, settings, fingerjointsettings):
super(StackableEdge, self).__init__(boxes, settings)
self.fingerjointsettings = fingerjointsettings
def __call__(self, length, **kw):
s = self.settings
r = s.height / 2.0 / (1 - math.cos(math.radians(s.angle)))
l = r * math.sin(math.radians(s.angle))
p = 1 if self.bottom else -1
if self.bottom:
self.boxes.fingerHolesAt(0, s.height + self.settings.holedistance + 0.5 * self.boxes.thickness,
length, 0)
self.boxes.edge(s.width, tabs=1)
self.boxes.corner(p * s.angle, r)
self.boxes.corner(-p * s.angle, r)
self.boxes.edge(length - 2 * s.width - 4 * l)
self.boxes.corner(-p * s.angle, r)
self.boxes.corner(p * s.angle, r)
self.boxes.edge(s.width, tabs=1)
def _height(self):
return self.settings.height + self.settings.holedistance + self.settings.thickness
[docs] def startwidth(self):
return self._height() if self.bottom else 0
[docs] def margin(self):
return 0 if self.bottom else self.settings.height
[docs]class StackableEdgeTop(StackableEdge):
char = "S"
description = "Stackable (top)"
bottom = False
#############################################################################
#### Hinges
#############################################################################
[docs]class HingeSettings(Settings):
"""Settings for Hinges and HingePins
Values:
* absolute_params
* style : "outset" : "outset" or "flush"
* outset : False : have lid overlap at the sides (similar to OutSetEdge)
* pinwidth : 1.0 : set to lower value to get disks surrounding the pins
* grip_percentage" : 0 : percentage of the lid that should get grips
* relative (in multiples of thickness)
* hingestrength : 1 : thickness of the arc holding the pin in place
* axle : 2 : diameter of the pin hole
* grip_length : 0 : fixed length of the grips on he lids
"""
absolute_params = {
"style": ("outset", "flush"),
"outset": False,
"pinwidth": 0.5,
"grip_percentage": 0,
}
relative_params = {
"hingestrength": 1, # 1.5-0.5*2**0.5,
"axle": 2,
"grip_length": 0,
}
[docs] def edgeObjects(self, boxes, chars="iIjJkK", add=True):
edges = [
Hinge(boxes, self, 1),
HingePin(boxes, self, 1),
Hinge(boxes, self, 2),
HingePin(boxes, self, 2),
Hinge(boxes, self, 3),
HingePin(boxes, self, 3),
]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class Hinge(BaseEdge):
char = 'i'
description = "Straight edge with hinge eye"
def __init__(self, boxes, settings=None, layout=1):
super(Hinge, self).__init__(boxes, settings)
if not (0 < layout <= 3):
raise ValueError("layout must be 1, 2 or 3 (got %i)" % layout)
self.layout = layout
self.char = "eijk"[layout]
self.description = self.description + ('', ' (start)', ' (end)', ' (both ends)')[layout]
[docs] def margin(self):
return 3 * self.settings.thickness
[docs] def outset(self, _reversed=False):
t = self.settings.thickness
r = 0.5 * self.settings.axle
alpha = math.degrees(math.asin(0.5 * t / r))
pinl = (self.settings.axle ** 2 - self.settings.thickness ** 2) ** 0.5 * self.settings.pinwidth
pos = math.cos(math.radians(alpha)) * r
hinge = (
0,
90 - alpha, 0,
(-360, r), 0,
90 + alpha,
t,
90,
0.5 * t,
(180, t + pos), 0,
(-90, 0.5 * t), 0
)
if _reversed:
hinge = reversed(hinge)
self.polyline(*hinge)
self.boxes.rectangularHole(-pos, -0.5 * t, pinl, self.settings.thickness)
else:
self.boxes.rectangularHole(pos, -0.5 * t, pinl, self.settings.thickness)
self.polyline(*hinge)
[docs] def outsetlen(self):
t = self.settings.thickness
r = 0.5 * self.settings.axle
alpha = math.degrees(math.asin(0.5 * t / r))
pos = math.cos(math.radians(alpha)) * r
return 2 * pos + 1.5 * t
[docs] def flush(self, _reversed=False):
t = self.settings.thickness
hinge = (
0, -90,
0.5 * t,
(180, 0.5 * self.settings.axle + self.settings.hingestrength), 0,
(-90, 0.5 * t), 0
)
pos = 0.5 * self.settings.axle + self.settings.hingestrength
pinl = (self.settings.axle ** 2 - self.settings.thickness ** 2) ** 0.5 * self.settings.pinwidth
if _reversed:
hinge = reversed(hinge)
self.hole(0.5 * t + pos, -0.5 * t, 0.5 * self.settings.axle)
self.boxes.rectangularHole(0.5 * t + pos, -0.5 * t, pinl, self.settings.thickness)
else:
self.hole(pos, -0.5 * t, 0.5 * self.settings.axle)
self.boxes.rectangularHole(pos, -0.5 * t, pinl, self.settings.thickness)
self.polyline(*hinge)
[docs] def flushlen(self):
return self.settings.axle + 2 * self.settings.hingestrength + 0.5 * self.settings.thickness
def __call__(self, l, **kw):
hlen = getattr(self, self.settings.style + 'len', self.outsetlen)()
if self.layout & 1:
getattr(self, self.settings.style, self.outset)()
self.edge(l - (self.layout & 1) * hlen - bool(self.layout & 2) * hlen,
tabs=2)
if self.layout & 2:
getattr(self, self.settings.style, self.outset)(True)
[docs]class HingePin(BaseEdge):
char = 'I'
description = "Edge with hinge pin"
def __init__(self, boxes, settings=None, layout=1):
super(HingePin, self).__init__(boxes, settings)
if not (0 < layout <= 3):
raise ValueError("layout must be 1, 2 or 3 (got %i)" % layout)
self.layout = layout
self.char = "EIJK"[layout]
self.description = self.description + ('', ' (start)', ' (end)', ' (both ends)')[layout]
[docs] def startwidth(self):
if self.layout & 1:
return 0
else:
return self.settings.outset * self.boxes.thickness
[docs] def endwidth(self):
if self.layout & 2:
return 0
else:
return self.settings.outset * self.boxes.thickness
[docs] def margin(self):
return self.settings.thickness
[docs] def outset(self, _reversed=False):
t = self.settings.thickness
r = 0.5 * self.settings.axle
alpha = math.degrees(math.asin(0.5 * t / r))
pos = math.cos(math.radians(alpha)) * r
pinl = (self.settings.axle ** 2 - self.settings.thickness ** 2) ** 0.5 * self.settings.pinwidth
pin = (pos - 0.5 * pinl, -90,
t, 90,
pinl,
90,
t,
-90)
if self.settings.outset:
pin += (
pos - 0.5 * pinl + 1.5 * t,
-90,
t,
90,
0,
)
else:
pin += (pos - 0.5 * pinl,)
if _reversed:
pin = reversed(pin)
self.polyline(*pin)
[docs] def outsetlen(self):
t = self.settings.thickness
r = 0.5 * self.settings.axle
alpha = math.degrees(math.asin(0.5 * t / r))
pos = math.cos(math.radians(alpha)) * r
if self.settings.outset:
return 2 * pos + 1.5 * self.settings.thickness
else:
return 2 * pos
[docs] def flush(self, _reversed=False):
t = self.settings.thickness
pinl = (self.settings.axle ** 2 - t ** 2) ** 0.5 * self.settings.pinwidth
d = (self.settings.axle - pinl) / 2.0
pin = (self.settings.hingestrength + d, -90,
t, 90,
pinl,
90,
t,
-90, d)
if self.settings.outset:
pin += (
0,
self.settings.hingestrength + 0.5 * t,
-90,
t,
90,
0,
)
if _reversed:
pin = reversed(pin)
self.polyline(*pin)
[docs] def flushlen(self):
l = self.settings.hingestrength + self.settings.axle
if self.settings.outset:
l += self.settings.hingestrength + 0.5 * self.settings.thickness
return l
def __call__(self, l, **kw):
plen = getattr(self, self.settings.style + 'len', self.outsetlen)()
glen = l * self.settings.grip_percentage + \
self.settings.grip_length
if not self.settings.outset:
glen = 0.0
glen = min(glen, l - plen)
if self.layout & 1 and self.layout & 2:
getattr(self, self.settings.style, self.outset)()
self.edge(l - 2 * plen, tabs=2)
getattr(self, self.settings.style, self.outset)(True)
elif self.layout & 1:
getattr(self, self.settings.style, self.outset)()
self.edge(l - plen - glen, tabs=2)
self.edges['g'](glen)
else:
self.edges['g'](glen)
self.edge(l - plen - glen, tabs=2)
getattr(self, self.settings.style, self.outset)(True)
#############################################################################
#### Chest Hinge
#############################################################################
[docs]class ChestHingeSettings(Settings):
"""Settings for Chest Hinges
Values:
* relative (in multiples of thickness)
* pin_height : 2.0 : radius of the disc rotating in the hinge
* hinge_strength : 1.0 : thickness of the arc holding the pin in place
"""
relative_params = {
"pin_height" : 2.0,
"hinge_strength" : 1.0,
"play" : 0.1,
}
[docs] def checkValues(self):
if self.pin_height / self.thickness < 1.2:
raise ValueError("ChestHingeSettings: 'pin_height' must be >= 1.2")
[docs] def pinheight(self):
return ((0.9*self.pin_height)**2-self.thickness**2)**0.5
[docs] def edgeObjects(self, boxes, chars="oOpPqQ", add=True):
edges = [
ChestHinge(boxes, self),
ChestHinge(boxes, self, 1),
ChestHingeTop(boxes, self),
ChestHingeTop(boxes, self, 1),
ChestHingePin(boxes, self),
ChestHingeFront(boxes, self),
]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class ChestHinge(BaseEdge):
description = "Edge with chest hinge"
char = "o"
def __init__(self, boxes, settings=None, reversed=False):
super(ChestHinge, self).__init__(boxes, settings)
self.reversed = reversed
self.char = "oO"[reversed]
self.description = self.description + (' (start)', ' (end)')[reversed]
def __call__(self, l, **kw):
t = self.settings.thickness
p = self.settings.pin_height
s = self.settings.hinge_strength
pinh = self.settings.pinheight()
if self.reversed:
self.hole(l+t, 0, p, tabs=4)
self.rectangularHole(l+0.5*t, -0.5*pinh, t, pinh)
else:
self.hole(-t, -s-p, p, tabs=4)
self.rectangularHole(-0.5*t, -s-p-0.5*pinh, t, pinh)
poly = (0, -180, t, (270, p+s), 0, -90, l+t-p-s)
if self.reversed:
poly = reversed(poly)
self.polyline(*poly)
[docs] def margin(self):
if self.reversed:
return 0*(self.settings.pin_height+self.settings.hinge_strength)
else:
return 1*(self.settings.pin_height+self.settings.hinge_strength)
[docs] def startwidth(self):
if self.reversed:
return self.settings.pin_height+self.settings.hinge_strength
return 0
[docs] def endwidth(self):
if self.reversed:
return 0
return self.settings.pin_height+self.settings.hinge_strength
[docs]class ChestHingeTop(ChestHinge):
"Edge above a chest hinge"
char = "p"
def __init__(self, boxes, settings=None, reversed=False):
super(ChestHingeTop, self).__init__(boxes, settings)
self.reversed = reversed
self.char = "oO"[reversed]
self.description = self.description + (' (start)', ' (end)')[reversed]
def __call__(self, l, **kw):
t = self.settings.thickness
p = self.settings.pin_height
s = self.settings.hinge_strength
play = self.settings.play
poly = (0, -180, t, -180, 0, (-90, p+s+play), 0, 90, l+t-p-s-play)
if self.reversed:
poly = reversed(poly)
self.polyline(*poly)
[docs] def startwidth(self):
if self.reversed:
return self.settings.play+self.settings.pin_height+self.settings.hinge_strength
return 0
[docs] def endwidth(self):
if self.reversed:
return 0
return self.settings.play+self.settings.pin_height+self.settings.hinge_strength
[docs] def margin(self):
if self.reversed:
return 0.
else:
return 1*(self.settings.play+self.settings.pin_height+self.settings.hinge_strength)
[docs]class ChestHingePin(BaseEdge):
description = "Edge with pins for an chest hinge"
char = "q"
def __call__(self, l, **kw):
t = self.settings.thickness
p = self.settings.pin_height
s = self.settings.hinge_strength
pinh = self.settings.pinheight()
poly = [0, -90, s+p-pinh, -90, t, 90, pinh, 90,]
poly += [l+2*t,] + list(reversed(poly))
self.polyline(*poly)
[docs] def margin(self):
return (self.settings.pin_height+self.settings.hinge_strength)
[docs]class ChestHingeFront(Edge):
description = "Edge opposing a chest hinge"
char = "Q"
[docs] def startwidth(self):
return self.settings.pin_height+self.settings.hinge_strength
#############################################################################
#### Cabinet Hinge
#############################################################################
[docs]class CabinetHingeSettings(Settings):
"""Settings for Cabinet Hinges
Values:
* absolute_params
* bore : 3.2 : diameter of the pin hole in mm
* eyes_per_hinge : 5 : pieces per hinge
* hinges : 2 : number of hinges per edge
* style : inside : style of hinge used
* relative (in multiples of thickness)
* eye : 1.5 : radius of the eye (in multiples of thickness)
* play : 0.05 : space between eyes (in multiples of thickness)
* spacing : 2.0 : minimum space around the hinge
"""
absolute_params = {
"bore": 3.2,
"eyes_per_hinge" : 5,
"hinges" : 2,
"style" : ("inside", "outside"),
}
relative_params = {
"eye": 1.5,
"play" : 0.05,
"spacing": 2.0,
}
[docs] def edgeObjects(self, boxes, chars="uUvV", add=True):
edges = [CabinetHingeEdge(boxes, self),
CabinetHingeEdge(boxes, self, top=True),
CabinetHingeEdge(boxes, self, angled=True),
CabinetHingeEdge(boxes, self, top=True, angled=True),
]
for e, c in zip(edges, chars):
e.char = c
return self._edgeObjects(edges, boxes, chars, add)
[docs]class CabinetHingeEdge(BaseEdge):
"""Edge with cabinet hinges"""
char = "u"
description = "Edge with cabinet hinges"
def __init__(self, boxes, settings=None, top=False, angled=False):
super(CabinetHingeEdge, self).__init__(boxes, settings)
self.top = top
self.angled = angled
self.char = "uUvV"[bool(top)+2*bool(angled)]
[docs] def startwidth(self):
return self.settings.thickness if self.top and self.angled else 0.0
def __poly(self):
n = self.settings.eyes_per_hinge
p = self.settings.play
e = self.settings.eye
t = self.settings.thickness
spacing = self.settings.spacing
if self.settings.style == "outside" and self.angled:
e = t
elif self.angled and not self.top:
# move hinge up to leave space for lid
e -= t
if self.top:
# start with space
poly = [spacing, 90, e+p, 180, 0]
else:
# start with hinge eye
poly = [spacing+p, 90, e+p, 0]
for i in range(n):
if (i % 2) ^ self.top:
# space
poly += [90, t + 2*p, 90]
else:
# hinge eye
poly += [t-p, -90, t, -90, t-p]
if (n % 2) ^ self.top:
# stopped with hinge eye
poly += [0, e+p, 90, p+spacing]
else:
# stopped with space
poly += [0, 180, e+p, 90, 0+spacing ]
width = (t+p) * n + p + 2 * spacing
return poly, width
def __call__(self, l, **kw):
n = self.settings.eyes_per_hinge
p = self.settings.play
e = self.settings.eye
t = self.settings.thickness
hn = self.settings.hinges
poly, width = self.__poly()
if self.settings.style == "outside" and self.angled:
e = t
elif self.angled and not self.top:
# move hinge up to leave space for lid
e -= t
hn = min(hn, int(l // width))
if hn == 1:
self.edge((l-width) / 2, tabs=2)
for j in range(hn):
for i in range(n):
if not (i % 2) ^ self.top:
self.rectangularHole(self.settings.spacing+0.5*t+p+i*(t+p), e+2.5*t, t, t)
self.polyline(*poly)
if j < (hn - 1):
self.edge((l-hn*width) / (hn-1), tabs=2)
if hn == 1:
self.edge((l-width) / 2, tabs=2)
[docs] def parts(self, move=None):
e, b = self.settings.eye, self.settings.bore
t = self.settings.thickness
n = self.settings.eyes_per_hinge * self.settings.hinges
pairs = n // 2 + 2 * (n % 2)
if self.settings.style == "outside":
th = 2*e + 4*t
tw = n * (max(3*t, 2*e) + self.boxes.spacing)
else:
th = 4*e+3*t+self.boxes.spacing
tw = max(e, 2*t) * pairs
if self.move(tw, th, move, True):
return
if self.settings.style == "outside":
ax = max(t/2, e-t)
self.moveTo(t+ax)
for i in range(n):
if self.angled:
if i > n // 2:
l = 4 * t + ax
else:
l = 5 * t + ax
else:
l = 3 * t + e
self.hole(0, e, b/2.0)
da = math.asin((t-ax) / e)
dad = math.degrees(da)
dy = e * (1-math.cos(da))
self.polyline(0, (180-dad, e), 0, (-90+dad), dy+l-e, (90, t))
self.polyline(0, 90, t, -90, t, 90, t, 90, t, -90, t, -90, t,
90, t, 90, (ax+t)-e, -90, l-3*t, (90, e))
self.moveTo(2*max(e, 1.5*t) + self.boxes.spacing)
self.move(tw, th, move)
return
if e <= 2*t:
if self.angled:
corner = [2*e-t, (90, 2*t - e), 0, -90, t, (90, e)]
else:
corner = [2*e, (90, 2*t)]
else:
a = math.asin(2*t/e)
ang = math.degrees(a)
corner = [e*(1-math.cos(a))+2*t, -90+ang, 0, (180-ang, e)]
self.moveTo(max(e, 2*t))
for i in range(n):
self.hole(0, e, b/2.0)
self.polyline(*[0, (180, e), 0, -90, t, 90, t, -90, t, -90, t, 90, t, 90, t, (90, t)] + corner)
self.moveTo(self.boxes.spacing, 4*e+3*t+self.boxes.spacing, 180)
if i % 2:
self.moveTo(2*max(e, 2*t) + 2*self.boxes.spacing)
self.move(th, tw, move)
#############################################################################
#### Slide-on lid
#############################################################################
[docs]class LidSettings(FingerJointSettings):
"""Settings for Slide-on Lids
Note that edge_width below also determines how much the sides extend above the lid.
Inherited:
"""
__doc__ += FingerJointSettings.__doc__
absolute_params = FingerJointSettings.absolute_params.copy()
relative_params = FingerJointSettings.relative_params.copy()
relative_params.update( {
"play": 0.05,
"finger": 3.0,
"space": 2.0,
} )
absolute_params.update( {
"second_pin": True,
"spring": ("both", "none", "left", "right"),
} )
[docs] def edgeObjects(self, boxes, chars=None, add=True):
edges = [LidEdge(boxes, self),
LidHoleEdge(boxes, self),
LidRight(boxes, self),
LidLeft(boxes, self),
LidSideRight(boxes, self),
LidSideLeft(boxes, self),
]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class LidEdge(FingerJointEdge):
char = "l"
description = "Edge for slide on lid (back)"
[docs]class LidHoleEdge(FingerHoleEdge):
char = "L"
description = "Edge for slide on lid (box back)"
[docs]class LidRight(BaseEdge):
char = "n"
description = "Edge for slide on lid (right)"
rightside = True
def __call__(self, length, **kw):
t = self.boxes.thickness
if self.rightside:
spring = self.settings.spring in ("right", "both")
else:
spring = self.settings.spring in ("left", "both")
if spring:
l = min(6*t, length - 2*t)
a = 30
sqt = 0.4 * t / math.cos(math.radians(a))
sw = 0.5 * t
p = [0, 90, 1.5*t+sw, -90, l, (-180, 0.25*t), l-0.2*t, 90, sw, 90-a, sqt, 2*a, sqt, -a, length-t ]
else:
p = [t, 90, t, -90, length-t]
pin = self.settings.second_pin
if pin:
pinl = 2*t
p[-1:] = [length-2*t-pinl, -90, t, 90, pinl, 90, t, -90, t]
if not self.rightside:
p = list(reversed(p))
self.polyline(*p)
[docs] def startwidth(self):
if self.rightside: # or self.settings.second_pin:
return self.boxes.thickness
else:
return 0.0
[docs] def endwidth(self):
if not self.rightside: # or self.settings.second_pin:
return self.boxes.thickness
else:
return 0.0
[docs] def margin(self):
if not self.rightside: # and not self.settings.second_pin:
return self.boxes.thickness
else:
return 0.0
[docs]class LidLeft(LidRight):
char = "m"
description = "Edge for slide on lid (left)"
rightside = False
[docs]class LidSideRight(BaseEdge):
char = "N"
description = "Edge for slide on lid (box right)"
rightside = True
def __call__(self, length, **kw):
t = self.boxes.thickness
s = self.settings.play
pin = self.settings.second_pin
edge_width = self.settings.edge_width
r = edge_width/3
if self.rightside:
spring = self.settings.spring in ("right", "both")
else:
spring = self.settings.spring in ("left", "both")
if spring:
p = [s, -90, t+s, -90, t+s, 90, edge_width-s/2, 90, length+t]
else:
p = [t+s, -90, t+s, -90, 2*t+s, 90, edge_width-s/2, 90, length+t]
if pin:
pinl = 2*t
p[-1:] = [p[-1]-1.5*t-2*pinl-r, (90, r), edge_width+t+s/2-r, -90, 2*pinl+s+0.5*t, -90, t+s, -90,
pinl-r, (90, r), edge_width-s/2-2*r, (90, r), pinl+t-s-r]
holex = 0.6 * t
holey = -0.5*t + self.burn - s / 2
if self.rightside:
p = list(reversed(p))
holex = length - holex
holey = edge_width + 0.5*t + self.burn
if spring:
self.rectangularHole(holex, holey, 0.4*t, t+2*s)
self.polyline(*p)
[docs] def startwidth(self):
return self.boxes.thickness + self.settings.edge_width if self.rightside else -self.settings.play / 2
[docs] def endwidth(self):
return self.boxes.thickness + self.settings.edge_width if not self.rightside else -self.settings.play / 2
[docs] def margin(self):
return self.boxes.thickness + self.settings.edge_width + self.settings.play / 2 if not self.rightside else 0.0
[docs]class LidSideLeft(LidSideRight):
char = "M"
description = "Edge for slide on lid (box left)"
rightside = False
#############################################################################
#### Click Joints
#############################################################################
[docs]class ClickSettings(Settings):
"""Settings for Click-on Lids
Values:
* absolute_params
* angle : 5.0 : angle of the hooks bending outward
* relative (in multiples of thickness)
* depth : 3.0 : length of the hooks
* bottom_radius : 0.1 : radius at the bottom
"""
absolute_params = {
"angle": 5.0,
}
relative_params = {
"depth": 3.0,
"bottom_radius": 0.1,
}
[docs] def edgeObjects(self, boxes, chars="cC", add=True):
edges = [ClickConnector(boxes, self),
ClickEdge(boxes, self)]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class ClickConnector(BaseEdge):
char = "c"
description = "Click on (bottom side)"
[docs] def hook(self, reverse=False):
t = self.settings.thickness
a = self.settings.angle
d = self.settings.depth
r = self.settings.bottom_radius
c = math.cos(math.radians(a))
s = math.sin(math.radians(a))
p1 = (0, 90 - a, c * d)
p2 = (
d + t,
-90,
t * 0.5,
135,
t * 2 ** 0.5,
135,
d + 2 * t + s * 0.5 * t)
p3 = (c * d - s * c * 0.2 * t, -a, 0)
if not reverse:
self.polyline(*p1)
self.corner(-180, r)
self.polyline(*p2)
self.corner(-180 + 2 * a, r)
self.polyline(*p3)
else:
self.polyline(*reversed(p3))
self.corner(-180 + 2 * a, r)
self.polyline(*reversed(p2))
self.corner(-180, r)
self.polyline(*reversed(p1))
[docs] def hookWidth(self):
t = self.settings.thickness
a = self.settings.angle
d = self.settings.depth
r = self.settings.bottom_radius
c = math.cos(math.radians(a))
s = math.sin(math.radians(a))
return 2 * s * d * c + 0.5 * c * t + c * 4 * r
[docs] def hookOffset(self):
a = self.settings.angle
d = self.settings.depth
r = self.settings.bottom_radius
c = math.cos(math.radians(a))
s = math.sin(math.radians(a))
return s * d * c + 2 * r
[docs] def finger(self, length):
t = self.settings.thickness
self.polyline(
2 * t,
90,
length,
90,
2 * t,
)
def __call__(self, length, **kw):
t = self.settings.thickness
self.edge(4 * t)
self.hook()
self.finger(2 * t)
self.hook(reverse=True)
self.edge(length - 2 * (6 * t + 2 * self.hookWidth()), tabs=2)
self.hook()
self.finger(2 * t)
self.hook(reverse=True)
self.edge(4 * t)
[docs] def margin(self):
return 2 * self.settings.thickness
[docs]class ClickEdge(ClickConnector):
char = "C"
description = "Click on (top)"
[docs] def startwidth(self):
return self.boxes.thickness
[docs] def margin(self):
return 0.0
def __call__(self, length, **kw):
t = self.settings.thickness
o = self.hookOffset()
w = self.hookWidth()
p1 = (
4 * t + o,
90,
t,
-90,
2 * (t + w - o),
-90,
t,
90,
0)
self.polyline(*p1)
self.edge(length - 2 * (6 * t + 2 * w) + 2 * o, tabs=2)
self.polyline(*reversed(p1))
#############################################################################
#### Dove Tail Joints
#############################################################################
[docs]class DoveTailSettings(Settings):
"""Settings for Dove Tail Joints
Values:
* absolute
* angle : 50 : how much should fingers widen (-80 to 80)
* relative (in multiples of thickness)
* size : 3 : from one middle of a dove tail to another
* depth : 1.5 : how far the dove tails stick out of/into the edge
* radius : 0.2 : radius used on all four corners
"""
absolute_params = {
"angle": 50,
}
relative_params = {
"size": 3,
"depth": 1.5,
"radius": 0.2,
}
[docs] def edgeObjects(self, boxes, chars="dD", add=True):
edges = [DoveTailJoint(boxes, self),
DoveTailJointCounterPart(boxes, self)]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class DoveTailJoint(BaseEdge):
"""Edge with dove tail joints """
char = 'd'
description = "Dove Tail Joint"
positive = True
def __call__(self, length, **kw):
s = self.settings
radius = max(s.radius, self.boxes.burn) # no smaller than burn
positive = self.positive
a = s.angle + 90
alpha = 0.5 * math.pi - math.pi * s.angle / 180.0
l1 = radius / math.tan(alpha / 2.0)
diffx = 0.5 * s.depth / math.tan(alpha)
l2 = 0.5 * s.depth / math.sin(alpha)
sections = int((length) // (s.size * 2))
leftover = length - sections * s.size * 2
p = 1 if positive else -1
self.edge((s.size + leftover) / 2.0 + diffx - l1, tabs=1)
for i in range(sections):
self.corner(-1 * p * a, radius)
self.edge(2 * (l2 - l1))
self.corner(p * a, radius)
self.edge(2 * (diffx - l1) + s.size)
self.corner(p * a, radius)
self.edge(2 * (l2 - l1))
self.corner(-1 * p * a, radius)
if i < sections - 1: # all but the last
self.edge(2 * (diffx - l1) + s.size)
self.edge((s.size + leftover) / 2.0 + diffx - l1, tabs=1)
[docs] def margin(self):
""" """
return self.settings.depth
[docs]class DoveTailJointCounterPart(DoveTailJoint):
"""Edge for other side of dove joints """
char = 'D'
description = "Dove Tail Joint (opposing side)"
positive = False
[docs] def margin(self):
return 0.0
[docs]class FlexSettings(Settings):
"""Settings for Flex
Values:
* absolute
* stretch : 1.05 : Hint of how much the flex part should be shortend
* relative (in multiples of thickness)
* distance : 0.5 : width of the pattern perpendicular to the cuts
* connection : 1.0 : width of the gaps in the cuts
* width" : 5.0 : width of the pattern in direction of the cuts
"""
relative_params = {
"distance": 0.5,
"connection": 1.0,
"width": 5.0,
}
absolute_params = {
"stretch": 1.05,
}
[docs] def checkValues(self):
if self.distance < 0.01:
raise ValueError("Flex Settings: distance parameter must be > 0.01mm")
if self.width < 0.1:
raise ValueError("Flex Settings: width parameter must be > 0.1mm")
[docs]class FlexEdge(BaseEdge):
"""Edge with flex cuts - use straight edge for the opposing side"""
char = 'X'
description = "Flex cut"
def __call__(self, x, h, **kw):
dist = self.settings.distance
connection = self.settings.connection
width = self.settings.width
burn = self.boxes.burn
h += 2 * burn
lines = int(x // dist)
leftover = x - lines * dist
sections = max(int((h - connection) // width), 1)
sheight = ((h - connection) / sections) - connection
for i in range(1, lines):
pos = i * dist + leftover / 2
if i % 2:
self.ctx.move_to(pos, 0)
self.ctx.line_to(pos, connection + sheight)
for j in range((sections - 1) // 2):
self.ctx.move_to(pos, (2 * j + 1) * sheight + (2 * j + 2) * connection)
self.ctx.line_to(pos, (2 * j + 3) * (sheight + connection))
if not sections % 2:
self.ctx.move_to(pos, h - sheight - connection)
self.ctx.line_to(pos, h)
else:
if sections % 2:
self.ctx.move_to(pos, h)
self.ctx.line_to(pos, h - connection - sheight)
for j in range((sections - 1) // 2):
self.ctx.move_to(
pos, h - ((2 * j + 1) * sheight + (2 * j + 2) * connection))
self.ctx.line_to(
pos, h - (2 * j + 3) * (sheight + connection))
else:
for j in range(sections // 2):
self.ctx.move_to(pos,
h - connection - 2 * j * (sheight + connection))
self.ctx.line_to(pos, h - 2 * (j + 1) * (sheight + connection))
self.ctx.move_to(0, 0)
self.ctx.line_to(x, 0)
self.ctx.translate(*self.ctx.get_current_point())
[docs]class GearSettings(Settings):
"""Settings for rack (and pinion) edge
Values:
* absolute_params
* dimension : 3.0 : modulus of the gear (in mm)
* angle : 20.0 : pressure angle
* profile_shift : 20.0 : Profile shift
* clearance : 0.0 : clearance
"""
absolute_params = {
"dimension" : 3.0,
"angle" : 20.0,
"profile_shift" : 20.0,
"clearance" : 0.0,
}
relative_params = {}
[docs]class RackEdge(BaseEdge):
char = "R"
description = "Rack (and pinion) Edge"
def __init__(self, boxes, settings):
super(RackEdge, self).__init__(boxes, settings)
self.gear = gears.Gears(boxes)
def __call__(self, length, **kw):
params = self.settings.values.copy()
params["draw_rack"] = True
params["rack_base_height"] = -1E-36
params["rack_teeth_length"] = int(length // params["dimension"])
params["rack_base_tab"] = (length - (params["rack_teeth_length"]) * params["dimension"]) / 2.0
s_tmp = self.boxes.spacing
self.boxes.spacing = 0
self.moveTo(length, 0, 180)
self.gear(move="", **params)
self.moveTo(0, 0, 180)
self.boxes.spacing = s_tmp
[docs] def margin(self):
return self.settings.dimension * 1.1
[docs]class RoundedTriangleEdgeSettings(Settings):
"""Settings for RoundedTriangleEdge
Values:
* absolute_params
* height : 150. : height above the wall
* radius : 30. : radius of top corner
* r_hole : 0. : radius of hole
* relative (in multiples of thickness)
* outset : 0 : extend the triangle along the length of the edge
"""
absolute_params = {
"height" : 150.,
"radius" : 30.,
"r_hole" : 2.,
}
relative_params = {
"outset" : 0.,
}
[docs] def edgeObjects(self, boxes, chars="t", add=True):
edges = [RoundedTriangleEdge(boxes, self)]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class RoundedTriangleEdge(Edge):
"""Makes an 'edge' with a rounded triangular bumpout and
optional hole"""
description = "Triangle for handle"
char = "t"
def __call__(self, length, **kw):
length += 2 * self.settings.outset
r = self.settings.radius
if r > length / 2:
r = length / 2
if length-2*r < self.settings.height: # avoid division by zero
angle = 90-math.degrees(math.atan(
(length-2*r)/(2*self.settings.height)))
l = self.settings.height / math.cos(math.radians(90-angle))
else:
angle = math.degrees(math.atan(
2*self.settings.height/(length-2*r)))
l = 0.5 * (length-2*r) / math.cos(math.radians(angle))
if self.settings.outset:
self.polyline(0, -180, self.settings.outset, 90)
else:
self.corner(-90)
if self.settings.r_hole:
self.hole(self.settings.height, length/2., self.settings.r_hole)
self.corner(90-angle, r, tabs=1)
self.edge(l, tabs=1)
self.corner(2*angle, r, tabs=1)
self.edge(l, tabs=1)
self.corner(90-angle, r, tabs=1)
if self.settings.outset:
self.polyline(0, 90, self.settings.outset, -180)
else:
self.corner(-90)
[docs] def margin(self):
return self.settings.height + self.settings.radius
#############################################################################
#### Slat wall
#############################################################################
[docs]class SlatWallSettings(Settings):
"""Settings for SlatWallEdges
Values:
* absolute_params
* bottom_hook : "hook" : "spring", "stud" or "none"
* relative (in multiples of thickness)
* hook_extra_height : 2.0 : space surrounding connectors (in multiples of thickness)
* edge_width : 1.0 : space below holes of FingerHoleEdge
"""
absolute_params = {
"bottom_hook" : ("hook", "spring", "stud", "none"),
}
relative_params = {
"hook_extra_height" : 2.0,
"edge_width": 1.0,
}
[docs] def edgeObjects(self, boxes, chars="aAbBcCdD", add=True):
edges = [SlatWallEdge(boxes, self),
SlatWallEdgeReversed(boxes, self),
SlatWallJoinedEdge(boxes, self),
SlatWallJoinedEdgeReversed(boxes, self),
SlatWallBackEdge(boxes, self),
SlatWallBackEdgeReversed(boxes, self),
SlatWallHoleEdge(boxes, self),
SlatWallHoleEdgeReversed(boxes, self),
]
return self._edgeObjects(edges, boxes, chars, add)
[docs]class SlatWallEdge(BaseEdge):
char = "a"
reversed_ = False
def _top_hook(self, reversed_=False):
w = 6
ro = 6
ri = 2
rt = min(1, w/2)
poly = [0, -90, 5.5-ri, (-90, ri), 12-ri-w-rt, (90, rt),
w-2*rt, (90, rt), 12-ro-rt, (90, ro), 5.5+w-ro, -90,
self.settings.hook_extra_height]
if reversed_:
poly = reversed(poly)
self.polyline(*poly)
def _top_hook_len(self):
w = 6 + 1
return (w, self.settings.hook_extra_height - 1)
def _bottom_hook(self, reversed_=False):
slot = 8
if self.settings.bottom_hook == "spring":
r_plug = slot*.4
slotslot = slot - r_plug * 2**0.5
poly = [self.settings.hook_extra_height, -90,
5.0, -45, 0, (135, r_plug),
0, 90, 10, -90, slotslot, -90, 10, 90, 0,
(135, r_plug), 0, -45, 5, -90,
self.settings.hook_extra_height]
elif self.settings.bottom_hook == "hook":
d = 2
poly = [self.settings.hook_extra_height + d - 1, -90,
5.5+5, (90,1), slot-2, (90, 1), 5, 90, d,
-90, 5.5, -90, self.settings.hook_extra_height + 1]
elif self.settings.bottom_hook == "stud":
poly = [self.settings.hook_extra_height, -90,
6, (90, 1) , slot-2, (90, 1), 6, -90,
self.settings.hook_extra_height]
else:
poly = [2*self.settings.hook_extra_height + slot]
if reversed_:
poly = reversed(poly)
self.polyline(*poly)
def _bottom_hook_len(self):
slot = 8
return (slot + self.settings.hook_extra_height,
self.settings.hook_extra_height)
def _joint(self, length, reversed_=False):
self.polyline(length)
def __call__(self, length, **kw):
step = 101.6 # 4"
tht, thb = self._top_hook_len()
bht, bhb = self._bottom_hook_len()
if length >= step + tht + bhb and self.settings.bottom_hook != "none":
top_len = ((length-tht-1) // step) * step - thb - bht
bottom_len = (length-tht) % step - bhb
else:
top_len = length-tht-thb
bottom_len = None
if self.reversed_:
if bottom_len is not None:
self._joint(bottom_len, True)
self._bottom_hook(True)
self._joint(top_len, True)
self._top_hook(True)
else:
self._top_hook()
self._joint(top_len)
if bottom_len is not None:
self._bottom_hook()
self._joint(bottom_len)
[docs] def margin(self):
return 6+5.5
[docs]class SlatWallEdgeReversed(SlatWallEdge):
char = "A"
reversed_ = True
[docs]class SlatWallJoinedEdge(SlatWallEdge):
char = "b"
def _joint(self, length, reversed_=False):
t = self.settings.thickness
self.polyline(0, 90, t, -90)
self.edges["f"](length)
self.polyline(0, -90, t, 90)
[docs] def startwidth(self):
return self.settings.thickness
[docs]class SlatWallJoinedEdgeReversed(SlatWallJoinedEdge):
char = "B"
reversed_ = True
[docs]class SlatWallBackEdge(SlatWallEdge):
char = "c"
def _top_hook(self, reversed_=False):
self.polyline(sum(self._top_hook_len()))
def _bottom_hook(self, reversed_=False):
self.polyline(sum(self._bottom_hook_len()))
def _joint(self, length, reversed_=False):
t = self.settings.thickness
self.polyline(0, -90, t, 90)
self.edges["F"](length)
self.polyline(0, 90, t, -90)
[docs] def margin(self):
return self.settings.thickness
[docs]class SlatWallBackEdgeReversed(SlatWallBackEdge):
char = "C"
reversed_ = True
[docs]class SlatWallHoles(SlatWallEdge):
reversed_ = True
def _top_hook(self, reversed_=False):
h = sum(self._top_hook_len())
self.rectangularHole(h/2, 0, h, self.settings.thickness)
self.moveTo(h, 0)
def _bottom_hook(self, reversed_=False):
h = sum(self._bottom_hook_len())
self.rectangularHole(h/2, 0, h, self.settings.thickness)
self.moveTo(h, 0)
def _joint(self, length, reversed_=False):
self.fingerHolesAt(0, 0, length, 0)
self.moveTo(length, 0)
def __call__(self, x, y, length, angle, **kw):
"""
Draw holes for a matching SlatWallJoinedEdge
:param x: position
:param y: position
:param length: length of matching edge
:param angle: (Default value = 90)
:param bedBolts: (Default value = None)
:param bedBoltSettings: (Default value = None)
"""
with self.boxes.saved_context():
self.boxes.moveTo(x, y, angle)
b = self.boxes.burn
t = self.settings.thickness
if self.boxes.debug: # XXX
width = self.settings.thickness
self.ctx.rectangle(b, -width / 2 + b,
length - 2 * b, width - 2 * b)
SlatWallEdge.__call__(self, length)
[docs]class SlatWallHoleEdge(BaseEdge):
"""Edge with holes for a parallel finger joint"""
char = 'd'
description = "Edge (parallel slot wall Holes)"
reversed_ = False
def __init__(self, boxes, slatWallHoles=None, **kw):
settings = None
if isinstance(slatWallHoles, Settings):
settings = slatWallHoles
slatWallHoles = SlatWallHoles(boxes, settings)
super(SlatWallHoleEdge, self).__init__(boxes, settings, **kw)
self.slatWallHoles = slatWallHoles or boxes.slatWallHolesAt
def __call__(self, length, bedBolts=None, bedBoltSettings=None, **kw):
dist = self.slatWallHoles.settings.edge_width
with self.saved_context():
px, angle = (0, 0) if self.reversed_ else (length, 180)
self.slatWallHoles(
px, dist + self.settings.thickness / 2, length, angle)
self.edge(length, tabs=2)
[docs] def startwidth(self):
""" """
return self.slatWallHoles.settings.edge_width + self.settings.thickness
[docs]class SlatWallHoleEdgeReversed(SlatWallHoleEdge):
char = "D"
reversed_ = True
