Clarify Enclosure Labels And Validate Clearance

hardware/case/validate.py

@@ -235,6 +235,28 @@ def variant_check():
             print('PASS parameter CGAL mesh', part, defines)
 
 
+def label_check():
+    """Actual glyph solids must stay on roof, 1 mm clear of all roof openings."""
+    with tempfile.TemporaryDirectory(prefix="case-labels-") as temp:
+        wrapper = Path(temp)/"labels.scad"
+        wrapper.write_text(
+            f'include <{ROOT / "enclosure.scad"}>\n'
+            'cube(1);\n'
+            'translate([0,0,80]) linear_extrude(1) difference() {\n'
+            '  projection() labels();\n'
+            '  offset(delta=-1) projection(cut=true)\n'
+            '    translate([0,0,-top_z+eps/2]) lid_body();\n'
+            '}\n')
+        path = Path(temp)/"clearance.stl"
+        result = subprocess.run(
+            ["openscad", "-o", str(path), "-D", 'part="check"', str(wrapper)],
+            env={**os.environ, "QT_QPA_PLATFORM": "offscreen"},
+            capture_output=True, text=True, timeout=180)
+        assert result.returncode == 0 and "ERROR:" not in result.stderr, result.stderr
+        near([mesh_check(path, 1)["volume_mm3"]], [1])
+    print("PASS actual label glyphs within roof, >=1 mm from edges, display, buttons and screw-head openings")
+
+
 def main():
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument("--source", action="store_true", help="also check saved KiCad/STEP registration")
@@ -246,6 +268,7 @@ def main():
     if args.installation:
         installation_check()
     geometry_check()
+    label_check()
     if args.source:
         source_check()
     reports = [mesh_check(ROOT / name, n) for name, n in [