feat: Connectors on wing root

nhf/touhou/houjuu_nue/wing.py

@@ -10,8 +10,9 @@ from nhf.parts.joints import HirthJoint
 def wing_root_profiles(
         base_sweep=150,
         wall_thickness=8,
-        base_radius=60,
+        base_radius=40,
         middle_offset=30,
+        middle_height=80,
         conn_width=40,
         conn_height=100) -> tuple[Cq.Wire, Cq.Wire]:
     assert base_sweep < 180
@@ -72,7 +73,7 @@ def wing_root_profiles(
     # If the exterior sweep is theta', it has to satisfy
     #
     # sin(theta) * r2 + wall_thickness = sin(theta') * r1
-    x, y = conn_width / 2, conn_height / 2
+    x, y = conn_width / 2, middle_height / 2
     t = wall_thickness
     dx = middle_offset
     middle = (
@@ -126,65 +127,86 @@ def wing_root_profiles(
 
 
 def wing_root(joint: HirthJoint,
-              bolt_diam: int = 12) -> Cq.Assembly:
+              bolt_diam: int = 12,
+              union_tol=1e-4,
+              attach_diam=8,
+              conn_width=40,
+              conn_height=100,
+              wall_thickness=8) -> Cq.Assembly:
     """
     Generate the contiguous components of the root wing segment
     """
-    root_profile, middle_profile, tip_profile = wing_root_profiles()
+    tip_centre = Cq.Vector((-150, 0, -80))
+    attach_points = [
+        (15, 0),
+        (40, 0),
+    ]
+    root_profile, middle_profile, tip_profile = wing_root_profiles(
+        conn_width=conn_width,
+        conn_height=conn_height,
+        wall_thickness=8,
+    )
+    middle_profile = middle_profile.located(Cq.Location(
+        (-40, 0, -40), (0, 30, 0)
+    ))
+    antetip_profile = tip_profile.located(Cq.Location(
+        (-95, 0, -75), (0, 60, 0)
+    ))
+    tip_profile = tip_profile.located(Cq.Location(
+        tip_centre, (0, 90, 0)
+    ))
+    profiles = [
+        root_profile,
+        middle_profile,
+        antetip_profile,
+        tip_profile,
+    ]
+    result = None
+    for p1, p2 in zip(profiles[:-1], profiles[1:]):
+        seg = (
+            Cq.Workplane('XY')
+            .add(p1)
+            .toPending()
+            .workplane() # This call is necessary
+            .add(p2)
+            .toPending()
+            .loft()
+        )
+        if result:
+            result = result.union(seg, tol=union_tol)
+        else:
+            result = seg
+    result = (
+        result
+        # Create connector holes
+        .copyWorkplane(
+            Cq.Workplane('bottom', origin=tip_centre + Cq.Vector((0, -50, 0)))
+        )
+        .pushPoints(attach_points)
+        .hole(attach_diam)
+    )
+    # Generate attach point tags
 
-    rotate_centre = Cq.Vector(-200, 0, -25)
-    rotate_axis = Cq.Vector(0, 1, 0)
-    terminal_offset = Cq.Vector(-80, 0, 80)
-    terminal_rotate = Cq.Vector(0, -45, 0)
+    for sign in [False, True]:
+        y = conn_height / 2 - wall_thickness
+        side = "bottom" if sign else "top"
+        y = y if sign else -y
+        plane = (
+            result
+            # Create connector holes
+            .copyWorkplane(
+                Cq.Workplane(side, origin=tip_centre +
+                             Cq.Vector((0, y, 0)))
+            )
+        )
+        for i, (px, py) in enumerate(attach_points):
+            (
+                plane
+                .moveTo(px, py)
+                .eachpoint(Cq.Vertex.makeVertex(0, 0, 0))
+                .tag(f"conn_{side}{i}")
+            )
 
-    #middle_profile = middle_profile.moved(Cq.Location((0, 0, -100)))
-    #tip_profile = tip_profile.moved(Cq.Location((0, 0, -200)))
-    middle_profile = middle_profile.rotate(
-        startVector=rotate_centre,
-        endVector=rotate_centre + rotate_axis,
-        angleDegrees = 30,
-    )
-    antetip_profile = tip_profile.rotate(
-        startVector=rotate_centre,
-        endVector=rotate_centre + rotate_axis,
-        angleDegrees = 60,
-    )
-    tip_profile = tip_profile.rotate(
-        startVector=rotate_centre,
-        endVector=rotate_centre + rotate_axis,
-        angleDegrees = 90,
-    )
-    seg1 = (
-        Cq.Workplane('XY')
-        .add(root_profile)
-        .toPending()
-        .transformed(
-            offset=terminal_offset,
-            rotate=terminal_rotate)
-        #.add(middle_profile.moved(Cq.Location((-15, 0, 15))))
-        .add(middle_profile)
-        .toPending()
-        .loft()
-    )
-    seg2 = (
-        Cq.Workplane('XY')
-        .add(middle_profile)
-        .toPending()
-        .workplane()
-        .add(antetip_profile)
-        .toPending()
-        .loft()
-    )
-    seg3 = (
-        Cq.Workplane('XY')
-        .add(antetip_profile)
-        .toPending()
-        .workplane()
-        .add(tip_profile)
-        .toPending()
-        .loft()
-    )
-    result = seg1.union(seg2).union(seg3)
     result.faces("<Z").tag("base")
     result.faces(">X").tag("conn")