Import CAD projects and cad-router v1

2026-07-22 19:38:36 +08:00
parent e4e0199bd5
commit af9f630c11
2253 changed files with 1994207 additions and 0 deletions
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+from build123d import (
+    Align,
+    Box,
+    BuildPart,
+    BuildSketch,
+    Cylinder,
+    Location,
+    Locations,
+    Mode,
+    Plane,
+    Polygon,
+    add,
+    extrude,
+)
+
+from benchmark_common import safe_fillet
+
+
+BASE_LENGTH = 80.0
+BASE_WIDTH = 50.0
+BASE_THICKNESS = 8.0
+
+BACK_LENGTH = 80.0
+BACK_THICKNESS = 8.0
+BACK_HEIGHT = 50.0
+BACK_CENTER_Y = BASE_WIDTH / 2.0 - BACK_THICKNESS / 2.0
+
+HOLE_DIAMETER = 6.0
+BASE_HOLE_LOCATIONS = ((-25.0, -10.0), (25.0, -10.0))
+BACK_HOLE_LOCATIONS = ((-25.0, 30.0), (25.0, 30.0))
+
+GUSSET_X_THICKNESS = 8.0
+GUSSET_X_LOCATIONS = (-20.0, 20.0)
+GUSSET_DEPTH = 30.0
+GUSSET_HEIGHT = 30.0
+TRANSITION_FILLET = 2.0
+
+
+def _make_gusset(x_center: float):
+    back_front_y = BACK_CENTER_Y - BACK_THICKNESS / 2.0
+    front_y = back_front_y - GUSSET_DEPTH
+    top_z = BASE_THICKNESS + GUSSET_HEIGHT
+
+    with BuildPart() as gusset:
+        with BuildSketch(Plane.YZ):
+            Polygon(
+                [
+                    (back_front_y, BASE_THICKNESS),
+                    (front_y, BASE_THICKNESS),
+                    (back_front_y, top_z),
+                ],
+                align=None,
+            )
+        extrude(amount=GUSSET_X_THICKNESS)
+
+    part = gusset.part.moved(Location((x_center - GUSSET_X_THICKNESS / 2.0, 0.0, 0.0)))
+    part.label = f"gusset_x_{x_center:.0f}"
+    return part
+
+
+def _transition_edges(part):
+    edges = []
+    for edge in part.edges():
+        bbox = edge.bounding_box()
+        if str(edge.geom_type).endswith("LINE"):
+            if abs(bbox.min.Z - BASE_THICKNESS) < 0.05 and abs(bbox.max.Z - BASE_THICKNESS) < 0.05:
+                center_y = bbox.center().Y
+                if BACK_CENTER_Y - BACK_THICKNESS / 2.0 - 0.05 <= center_y <= BASE_WIDTH / 2.0 + 0.05:
+                    if bbox.size.X > 20.0:
+                        edges.append(edge)
+    return edges
+
+
+def gen_step():
+    """Return the L-bracket benchmark model in millimeters."""
+    with BuildPart() as bracket:
+        Box(BASE_LENGTH, BASE_WIDTH, BASE_THICKNESS, align=(Align.CENTER, Align.CENTER, Align.MIN))
+
+        with Locations(Location((0.0, BACK_CENTER_Y, BASE_THICKNESS))):
+            Box(
+                BACK_LENGTH,
+                BACK_THICKNESS,
+                BACK_HEIGHT,
+                align=(Align.CENTER, Align.CENTER, Align.MIN),
+                mode=Mode.ADD,
+            )
+
+        for x_pos, y_pos in BASE_HOLE_LOCATIONS:
+            with Locations(Location((x_pos, y_pos, -1.0))):
+                Cylinder(
+                    radius=HOLE_DIAMETER / 2.0,
+                    height=BASE_THICKNESS + 2.0,
+                    align=(Align.CENTER, Align.CENTER, Align.MIN),
+                    mode=Mode.SUBTRACT,
+                )
+
+        for x_pos, z_pos in BACK_HOLE_LOCATIONS:
+            with Locations(Location((x_pos, BACK_CENTER_Y, z_pos))):
+                Cylinder(
+                    radius=HOLE_DIAMETER / 2.0,
+                    height=BACK_THICKNESS + 2.0,
+                    rotation=(90.0, 0.0, 0.0),
+                    align=(Align.CENTER, Align.CENTER, Align.CENTER),
+                    mode=Mode.SUBTRACT,
+                )
+
+        for x_center in GUSSET_X_LOCATIONS:
+            add(_make_gusset(x_center), mode=Mode.ADD)
+
+    part = bracket.part
+    part = safe_fillet(part, _transition_edges(part), radius=TRANSITION_FILLET)
+    part.label = "benchmark_03_l_bracket_gussets_two_hole_directions"
+    return part