feat: Extension profile on both sides

nhf/touhou/houjuu_nue/wing.py

@@ -62,7 +62,7 @@ class WingProfile(Model):
         child_arm_radius=23.0,
         parent_arm_radius=30.0,
         hole_diam=4.0,
-        angle_neutral=-20.0,
+        angle_neutral=-30.0,
     ))
     # Distance between the two spacers on the elbow, halved
     wrist_h2: float = 5.0
@@ -80,7 +80,7 @@ class WingProfile(Model):
     wrist_bot_loc: Cq.Location
     wrist_height: float
     elbow_rotate: float = -5.0
-    wrist_rotate: float = -20.0
+    wrist_rotate: float = -30.0
 
     # False for the right side, True for the left side
     flip: bool
@@ -385,6 +385,36 @@ class WingProfile(Model):
                 for p in points
             ])
         )
+    def _joint_extension_profile(
+            self,
+            axle_loc: Cq.Location,
+            radius: float,
+            angle_span: float,
+            bot: bool = False) -> Cq.Sketch:
+        sign = -1 if bot else 1
+        #sign = -1
+        axle_loc = axle_loc * Cq.Location.rot2d(180 if bot else 0)
+        loc_h = Cq.Location.from2d(0, radius)
+        start = axle_loc * loc_h
+        mid = axle_loc * Cq.Location.rot2d(-sign * angle_span/2) * loc_h
+        end = axle_loc * Cq.Location.rot2d(-sign * angle_span) * loc_h
+        return (
+            Cq.Sketch()
+            .segment(
+                axle_loc.to2d_pos(),
+                start.to2d_pos(),
+            )
+            .arc(
+                start.to2d_pos(),
+                mid.to2d_pos(),
+                end.to2d_pos(),
+            )
+            .segment(
+                end.to2d_pos(),
+                axle_loc.to2d_pos(),
+            )
+            .assemble()
+        )
 
 
     def _assembly_insert_spacer(
@@ -480,6 +510,35 @@ class WingProfile(Model):
         tags = tags_shoulder + tags_elbow
         return extrude_with_markers(
             profile, self.panel_thickness, tags, reverse=front)
+    @target(name="profile-s1-bridge", kind=TargetKind.DXF)
+    def profile_s1_bridge(self) -> Cq.Workplane:
+        return (
+            self.profile()
+            #.reset()
+            #.polygon(self._mask_elbow(), mode='i')
+            .reset()
+            .push([self.elbow_axle_loc])
+            .each(self._elbow_joint_retract_cut_polygon, mode='i')
+            .reset()
+            .push([self.elbow_axle_loc])
+            .each(lambda loc: self._joint_extension_profile(
+                axle_loc=self.elbow_axle_loc,
+                radius=self.elbow_height / 2,
+                angle_span=self.elbow_joint.motion_span,
+                bot=True,
+            ), mode='a')
+        )
+    def surface_s1_bridge(self, front: bool = True) -> Cq.Workplane:
+        profile = self.profile_s1_bridge()
+        loc_elbow = Cq.Location.rot2d(self.elbow_rotate) * self.elbow_joint.parent_arm_loc()
+        tags = [
+            ("elbow_bot", self.elbow_axle_loc * loc_elbow *
+             Cq.Location.from2d(0, -self.elbow_h2)),
+            ("elbow_top", self.elbow_axle_loc * loc_elbow *
+             Cq.Location.from2d(0, self.elbow_h2)),
+        ]
+        return extrude_with_markers(
+            profile, self.panel_thickness, tags, reverse=not front)
     @submodel(name="spacer-s1-shoulder")
     def spacer_s1_shoulder(self) -> MountingBox:
         holes = [
@@ -511,6 +570,14 @@ class WingProfile(Model):
                   material=self.mat_panel, role=self.role_panel)
             .constrain("front@faces@>Z", "back@faces@<Z", "Point",
                        param=self.s1_thickness)
+            .addS(self.surface_s1_bridge(front=True), name="bridge_front",
+                  material=self.mat_panel, role=self.role_panel)
+            .constrain("front?elbow_bot", "bridge_front?elbow_bot", "Plane")
+            .constrain("front?elbow_top", "bridge_front?elbow_top", "Plane")
+            .addS(self.surface_s1_bridge(front=False), name="bridge_back",
+                  material=self.mat_panel, role=self.role_panel)
+            .constrain("back?elbow_bot", "bridge_back?elbow_bot", "Plane")
+            .constrain("back?elbow_top", "bridge_back?elbow_top", "Plane")
         )
         for t in ["shoulder_bot", "shoulder_top", "elbow_bot", "elbow_top"]:
             is_top = t.endswith("_top")
@@ -545,7 +612,6 @@ class WingProfile(Model):
             )
         return profile
     def surface_s2(self, front: bool = True) -> Cq.Workplane:
-        h = self.elbow_height / 2
         loc_elbow = Cq.Location.rot2d(self.elbow_rotate) * self.elbow_joint.child_arm_loc(flip=self.flip)
         tags_elbow = [
             ("elbow_bot", self.elbow_axle_loc * loc_elbow *
@@ -553,7 +619,6 @@ class WingProfile(Model):
             ("elbow_top", self.elbow_axle_loc * loc_elbow *
              Cq.Location.from2d(0, -self.elbow_h2)),
         ]
-        h = self.wrist_height / 2
         loc_wrist = Cq.Location.rot2d(self.wrist_rotate) * self.wrist_joint.parent_arm_loc()
         tags_wrist = [
             ("wrist_bot", self.wrist_axle_loc * loc_wrist *
@@ -564,6 +629,40 @@ class WingProfile(Model):
         profile = self.profile_s2()
         tags = tags_elbow + tags_wrist
         return extrude_with_markers(profile, self.panel_thickness, tags, reverse=front)
+    @target(name="profile-s2-bridge", kind=TargetKind.DXF)
+    def profile_s2_bridge(self) -> Cq.Workplane:
+        # Generates the extension profile, which is required on both sides
+        profile = self._joint_extension_profile(
+            axle_loc=self.wrist_axle_loc,
+            radius=self.wrist_height * (0.5 if self.flip else 1),
+            angle_span=self.wrist_joint.motion_span,
+            bot=False,
+        )
+        # Generates the contraction (cut) profile. only required on the left
+        if self.flip:
+            extra = (
+                self.profile()
+                .reset()
+                .push([self.wrist_axle_loc])
+                .each(self._wrist_joint_retract_cut_polygon, mode='i')
+            )
+            profile = (
+                profile
+                .push([self.wrist_axle_loc])
+                .each(lambda _: extra, mode='a')
+            )
+        return profile
+    def surface_s2_bridge(self, front: bool = True) -> Cq.Workplane:
+        profile = self.profile_s2_bridge()
+        loc_wrist = Cq.Location.rot2d(self.wrist_rotate) * self.wrist_joint.parent_arm_loc()
+        tags = [
+            ("wrist_bot", self.wrist_axle_loc * loc_wrist *
+             Cq.Location.from2d(0, -self.wrist_h2)),
+            ("wrist_top", self.wrist_axle_loc * loc_wrist *
+             Cq.Location.from2d(0, self.wrist_h2)),
+        ]
+        return extrude_with_markers(
+            profile, self.panel_thickness, tags, reverse=not front)
     @submodel(name="spacer-s2-elbow")
     def spacer_s2_elbow(self) -> MountingBox:
         return self.spacer_of_joint(
@@ -589,6 +688,14 @@ class WingProfile(Model):
                   material=self.mat_panel, role=self.role_panel)
             .constrain("front@faces@>Z", "back@faces@<Z", "Point",
                        param=self.s1_thickness)
+            .addS(self.surface_s2_bridge(front=True), name="bridge_front",
+                  material=self.mat_panel, role=self.role_panel)
+            .constrain("front?wrist_bot", "bridge_front?wrist_bot", "Plane")
+            .constrain("front?wrist_top", "bridge_front?wrist_top", "Plane")
+            .addS(self.surface_s2_bridge(front=False), name="bridge_back",
+                  material=self.mat_panel, role=self.role_panel)
+            .constrain("back?wrist_bot", "bridge_back?wrist_bot", "Plane")
+            .constrain("back?wrist_top", "bridge_back?wrist_top", "Plane")
         )
         for t in ["elbow_bot", "elbow_top", "wrist_bot", "wrist_top"]:
             is_top = t.endswith("_top")