cosplay: Touhou/Houjuu Nue #4
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@ -87,6 +87,11 @@ class Parameters(Model):
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hs_joint_axis_cbore_diam: float = 20
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hs_joint_axis_cbore_depth: float = 3
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wing_profile: MW.WingProfile = field(default_factory=lambda: MW.WingProfile(
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shoulder_height = 100,
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elbow_height = 120,
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))
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# Exterior radius of the wing root assembly
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wing_root_radius: float = 40
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wing_root_wall_thickness: float = 8
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@ -347,6 +352,15 @@ class Parameters(Model):
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result.moveTo(0, self.shoulder_attach_dist).tagPlane('conn1')
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return result
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@property
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def shoulder_joint_child_height(self) -> float:
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"""
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Calculates the y distance between two joint surfaces on the child side
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of the shoulder joint.
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"""
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joint = self.shoulder_torsion_joint
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return self.wing_s0_height - 2 * joint.total_height + 2 * joint.rider_disk_height
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@target(name="shoulder_joint_child")
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def shoulder_joint_child(self) -> Cq.Assembly:
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"""
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@ -470,18 +484,18 @@ class Parameters(Model):
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.finalize()
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.extrude(self.wing_s1_spacer_thickness)
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)
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result.faces("<Z").tag("mate1")
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result.faces(">Z").tag("mate2")
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result.faces("<Z").tag("weld1")
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result.faces(">Z").tag("weld2")
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result.faces(">Y").tag("dir")
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return result
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@target(name="wing/s1-shoulder-spacer", kind=TargetKind.DXF)
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def wing_s1_shoulder_spacer(self, flipped=False) -> Cq.Workplane:
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def wing_s1_shoulder_spacer(self) -> Cq.Workplane:
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"""
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if `flipped = True`, tag on the bottom face. This does not change the
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geometry.
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The mate tags are on the side closer to the holes.
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"""
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dx = self.wing_s1_shoulder_spacer_hole_dist
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h = self.wing_s1_spacer_thickness
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result = (
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Cq.Workplane('XZ')
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.sketch()
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@ -493,33 +507,35 @@ class Parameters(Model):
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])
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.circle(self.wing_s1_spacer_hole_diam / 2, mode='s')
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.finalize()
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.extrude(self.wing_s1_spacer_thickness)
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.extrude(h)
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)
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# Tag the mating surfaces to be glued
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result.faces("<Z").tag("mate1")
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result.faces(">Z").tag("mate2")
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result.faces("<Z").workplane().moveTo(0, h).tagPlane("weld1")
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result.faces(">Z").workplane().moveTo(0, -h).tagPlane("weld2")
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# Tag the directrix
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result.faces("<Y").tag("dir")
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# Tag the holes
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plane = result.faces("<Y" if flipped else ">Y").workplane()
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plane = result.faces(">Y").workplane()
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# Side closer to the parent is 0
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plane.moveTo(dx if flipped else -dx, 0).tagPlane("conn0")
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plane.moveTo(-dx, 0).tagPlane("conn0")
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plane.tagPlane("conn1")
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return result
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@target(name="wing/r1s1", kind=TargetKind.DXF)
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def wing_r1s1_profile(self) -> Cq.Sketch:
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return MW.wing_r1s1_profile()
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return self.wing_profile.wing_r1s1_profile()
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def wing_r1s1_panel(self, front=True) -> Cq.Workplane:
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profile = self.wing_r1s1_profile()
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w = self.wing_s1_shoulder_spacer_width / 2
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h = (self.wing_profile.shoulder_height - self.shoulder_joint_child_height) / 2
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anchors = [
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("shoulder_top", 10, 55),
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("shoulder_bot", 10, 5),
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("shoulder_top", w, h + self.shoulder_joint_child_height),
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("shoulder_bot", w, h),
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("middle", 50, -20),
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("tip", 390, -150),
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("tip", 270, 50),
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]
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result = (
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Cq.Workplane("XY")
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@ -543,25 +559,30 @@ class Parameters(Model):
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color=self.material_panel.color)
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.constrain("panel_front@faces@>Z", "panel_back@faces@<Z", "Point",
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param=self.wing_s1_thickness)
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)
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for tag in ["shoulder_top", "shoulder_bot"]:
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name = f"{tag}_spacer"
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flipped = tag.endswith("top")
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(
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result
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.add(self.wing_s1_shoulder_spacer(flipped=flipped), name=name,
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.add(self.wing_s1_shoulder_spacer(),
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name="shoulder_bot_spacer",
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color=self.material_bracket.color)
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.constrain(f"panel_front?{tag}", f"{name}?mate1", "Plane")
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.constrain(f"panel_back?{tag}", f"{name}?mate2", "Plane")
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.constrain(f"{name}?dir", "FixedAxis", param=(0, 1, 0))
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.constrain("panel_front?shoulder_bot", "shoulder_bot_spacer?weld1", "Plane")
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.constrain("panel_back?shoulder_bot", "shoulder_bot_spacer?weld2", "Plane")
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.constrain("shoulder_bot_spacer?dir", "FixedAxis", param=(0, 1, 0))
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.add(self.wing_s1_shoulder_spacer(),
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name="shoulder_top_spacer",
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color=self.material_bracket.color)
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.constrain("panel_front?shoulder_top", "shoulder_top_spacer?weld2", "Plane")
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.constrain("panel_back?shoulder_top", "shoulder_top_spacer?weld1", "Plane")
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.constrain("shoulder_top_spacer?dir", "FixedAxis", param=(0, -1, 0))
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# Should be controlled by point value directly
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#.constrain("shoulder_bot_spacer?dir", "shoulder_top_spacer?dir", "Point",
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# self.shoulder_joint_child_height)
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)
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for tag in ["middle", "tip"]:
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name = f"{tag}_spacer"
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(
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result
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.add(self.wing_s1_spacer(), name=f"{tag}_spacer",
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.add(self.wing_s1_spacer(), name=name,
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color=self.material_bracket.color)
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.constrain(f"panel_front?{tag}", f"{tag}_spacer?mate1", "Plane")
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.constrain(f"panel_back?{tag}", f"{tag}_spacer?mate2", "Plane")
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.constrain(f"panel_front?{tag}", f"{tag}_spacer?weld1", "Plane")
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.constrain(f"panel_back?{tag}", f"{tag}_spacer?weld2", "Plane")
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.constrain(f"{name}?dir", "FixedAxis", param=(0, 1, 0))
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)
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return result.solve()
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@ -3,11 +3,13 @@ This file describes the shapes of the wing shells. The joints are defined in
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`__init__.py`.
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"""
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import math
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from dataclasses import dataclass
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import cadquery as Cq
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from nhf import Material, Role
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from nhf.parts.joints import HirthJoint
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import nhf.utils
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def wing_root_profiles(
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base_sweep=150,
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wall_thickness=8,
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@ -227,32 +229,49 @@ def wing_root(joint: HirthJoint,
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)
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return result
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def wing_r1s1_profile() -> Cq.Sketch:
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@dataclass
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class WingProfile:
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shoulder_height: float = 100
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elbow_height: float = 120
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def wing_r1s1_profile(self) -> Cq.Sketch:
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"""
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Generates the first wing segment profile, with the wing root pointing in
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the positive x axis.
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"""
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# Depression of the wing middle
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h = 100
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w = 400
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bend = 200
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w = 270
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# Depression of the wing middle, measured
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h = 0
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# spline curve easing extension
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theta = math.radians(30)
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c_th, s_th = math.cos(theta), math.sin(theta)
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bend = 30
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ext = 40
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ext_dh = -5
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assert ext * 2 < w
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factor = 0.7
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result = (
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Cq.Sketch()
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.segment((0, 0), (0, h))
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.segment((0, 0), (0, self.shoulder_height))
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.spline([
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(0, h),
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(0.5 * w, h - factor * bend),
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(w, h - bend),
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(0, self.shoulder_height),
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((w - s_th * self.elbow_height) / 2, self.shoulder_height / 2 + (self.elbow_height * c_th - h) / 2 - bend),
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(w - s_th * self.elbow_height, self.elbow_height * c_th - h),
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])
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.segment(
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(w, h - bend),
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(w, -bend),
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(w - s_th * self.elbow_height, self.elbow_height * c_th -h),
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(w, -h),
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)
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.spline([
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(w, - bend),
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(0.5 * w, - factor * bend),
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(0, 0),
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(w / 2, -h / 2 - bend),
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(w, -h),
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])
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.assemble()
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)
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Reference in New Issue