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boxespy
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Use regular corners for DoveTailJoints

This commit is contained in:
Florian Festi 2013-06-07 15:55:39 +02:00
parent 1a6380fd67
commit 4cbb586547
1 changed files with 7 additions and 25 deletions
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32
boxes.py
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@ -140,29 +140,11 @@ class Boxes:
self.ctx.line_to(length, 0) self.ctx.line_to(length, 0)
self.ctx.translate(*self.ctx.get_current_point()) self.ctx.translate(*self.ctx.get_current_point())
# helpers for doveTailJoint
# not intended for general use
def _turnLeft(self, radius, angle):
self.ctx.arc(0, radius, radius,
-0.5*math.pi, angle)
self.continueDirection(0.5*math.pi+angle)
def _turnRight(self, radius, angle):
self.ctx.arc_negative(0, -radius, radius,
0.5*math.pi, -angle)
self.continueDirection(-0.5*math.pi - angle)
def _turn(self, radius, angle, right=True):
if right:
self._turnRight(radius, angle)
else:
self._turnLeft(radius, angle)
def doveTailJoint(self, length, positive=True, settings=None): def doveTailJoint(self, length, positive=True, settings=None):
width, depth, angle, radius = settings or self.doveTailJointSettings width, depth, angle, radius = settings or self.doveTailJointSettings
angle = math.pi*angle/180.0 radius = max(radius, self.burn) # no smaller than burn
alpha = 0.5*math.pi - angle a = angle + 90
alpha = 0.5*math.pi - math.pi*angle/180.0
l1 = radius/math.tan(alpha/2.0) l1 = radius/math.tan(alpha/2.0)
diffx = 0.5*depth/math.tan(alpha) diffx = 0.5*depth/math.tan(alpha)
@ -175,13 +157,13 @@ class Boxes:
self.edge((width+leftover)/2.0+diffx-l1) self.edge((width+leftover)/2.0+diffx-l1)
for i in xrange(sections): for i in xrange(sections):
self._turn(radius-p*self.burn, angle, right=positive) self.corner(-1*p*a, radius)
self.edge(2*(l2-l1)) self.edge(2*(l2-l1))
self._turn(radius+p*self.burn, angle, right=not positive) self.corner(p*a, radius)
self.edge(2*(diffx-l1)+width) self.edge(2*(diffx-l1)+width)
self._turn(radius+p*self.burn, angle, right=not positive) self.corner(p*a, radius)
self.edge(2*(l2-l1)) self.edge(2*(l2-l1))
self._turn(radius-p*self.burn, angle, right=positive) self.corner(-1*p*a, radius)
if i<sections-1: # all but the last if i<sections-1: # all but the last
self.edge(2*(diffx-l1)+width) self.edge(2*(diffx-l1)+width)
self.edge((width+leftover)/2.0+diffx-l1) self.edge((width+leftover)/2.0+diffx-l1)