FingerJoints: Move drawing fingers into function
so it can be reused by sub classes
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@ -880,6 +880,43 @@ class FingerJointEdge(BaseEdge, FingerJointBase):
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description = "Finger Joint"
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positive = True
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def draw_finger(self, f, h, style, positive=True):
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t = self.settings.thickness
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if positive:
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if style == "springs":
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self.polyline(
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0, -90 * p, 0.8*h, (90 * p, 0.2*h),
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0.1 * h, 90, 0.9*h, -180, 0.9*h, 90,
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f - 0.6*h,
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90, 0.9*h, -180, 0.9*h, 90, 0.1*h,
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(90 * p, 0.2 *h), 0.8*h, -90 * p)
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elif style == "barbs":
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n = int((h-0.1*t) // (0.3*t))
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a = math.degrees(math.atan(0.5))
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l = 5**0.5
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poly = [h - n*0.3*t] + \
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([-45, 0.1*2**0.5*t, 45+a, l*0.1*t, -a, 0] * n)
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self.polyline(
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0, -90, *poly, 90, f, 90, *reversed(poly), -90
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)
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elif style == "snap":
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a12 = math.degrees(math.atan(0.5))
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l12 = t / math.cos(math.radians(a12))
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d = 4*t
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d2 = d + 1*t
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a = math.degrees(math.atan((0.5*t)/(h+d2)))
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l = (h+d2) / math.cos(math.radians(a))
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poly = [0, 90, d, -180, d+h, -90, 0.5*t, 90+a12, l12, 90-a12,
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0.5*t, 90-a, l, +a, 0, (-180, 0.1*t), h+d2, 90, f-1.7*t, 90-a12, l12, a12, h, -90, 0]
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if i < fingers//2:
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poly = list(reversed(poly))
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self.polyline(*poly)
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else:
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self.polyline(0, -90, h, 90, f, 90, h, -90)
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else:
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self.polyline(0, 90, h, -90, f, -90, h, 90)
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def __call__(self, length, bedBolts=None, bedBoltSettings=None, **kw):
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positive = self.positive
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@ -887,8 +924,6 @@ class FingerJointEdge(BaseEdge, FingerJointBase):
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s, f, thickness = self.settings.space, self.settings.finger, self.settings.thickness
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p = 1 if positive else -1
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fingers, leftover = self.calcFingers(length, bedBolts)
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if not positive:
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@ -914,37 +949,7 @@ class FingerJointEdge(BaseEdge, FingerJointBase):
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self.bedBoltHole(s, bedBoltSettings)
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else:
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self.edge(s)
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if positive and self.settings.style == "springs":
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self.polyline(
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0, -90 * p, 0.8*h, (90 * p, 0.2*h),
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0.1 * h, 90, 0.9*h, -180, 0.9*h, 90,
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f - 0.6*h,
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90, 0.9*h, -180, 0.9*h, 90, 0.1*h,
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(90 * p, 0.2 *h), 0.8*h, -90 * p)
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elif positive and self.settings.style == "barbs":
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n = int((h-0.1*t) // (0.3*t))
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a = math.degrees(math.atan(0.5))
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l = 5**0.5
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poly = [h - n*0.3*t] + \
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([-45, 0.1*2**0.5*t, 45+a, l*0.1*t, -a, 0] * n)
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self.polyline(
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0, -90, *poly, 90, f, 90, *reversed(poly), -90
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)
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elif positive and self.settings.style == "snap":
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a12 = math.degrees(math.atan(0.5))
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l12 = t / math.cos(math.radians(a12))
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d = 4*t
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d2 = d + 1*t
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a = math.degrees(math.atan((0.5*t)/(h+d2)))
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l = (h+d2) / math.cos(math.radians(a))
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poly = [0, 90, d, -180, d+h, -90, 0.5*t, 90+a12, l12, 90-a12,
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0.5*t, 90-a, l, +a, 0, (-180, 0.1*t), h+d2, 90, f-1.7*t, 90-a12, l12, a12, h, -90, 0]
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if i < fingers//2:
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poly = list(reversed(poly))
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self.polyline(*poly)
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else:
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self.polyline(0, -90 * p, h, 90 * p, f, 90 * p, h, -90 * p)
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self.draw_finger(f, h, self.settings.style, positive)
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self.edge(leftover / 2.0, tabs=1)
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