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app.py

@@ -95,7 +95,41 @@ try:
                 edge = edge & mask
             return edge
         _u3d_np.depth_edge = _depth_edge
-        print("Injected depth_edge into utils3d.numpy")
+
+        def _normals_edge(normals, tol=0.1, mask=None):
+            """Detect normal discontinuities."""
+            import numpy as _np
+            from scipy.ndimage import sobel
+            # Compute gradient of each normal component
+            edges = _np.zeros(normals.shape[:2], dtype=bool)
+            for c in range(normals.shape[-1]):
+                ch = normals[..., c]
+                if mask is not None:
+                    ch = _np.where(mask, ch, 0.0)
+                gx = sobel(ch, axis=1)
+                gy = sobel(ch, axis=0)
+                grad = _np.sqrt(gx**2 + gy**2)
+                edges |= (grad > tol)
+            if mask is not None:
+                edges = edges & mask
+            return edges
+        _u3d_np.normals_edge = _normals_edge
+
+        # Also inject a catch-all __getattr__ for any future missing functions
+        _orig_getattr = getattr(_u3d_np, '__getattr__', None)
+        def _u3d_catchall(name):
+            if name.startswith('__') and name.endswith('__'):
+                raise AttributeError(name)
+            import warnings
+            warnings.warn(f"utils3d.numpy stub: {name} not implemented, returning dummy")
+            def _dummy(*a, **kw):
+                import numpy as _np
+                return _np.zeros(1)
+            return _dummy
+        import types
+        _u3d_np.__getattr__ = _u3d_catchall
+
+        print("Injected depth_edge + normals_edge + catch-all into utils3d.numpy")
 except Exception as e:
     print(f"depth_edge patch skipped: {e}")