added slice

app.py

@@ -47,9 +47,10 @@ x, y, z = grid.points.T
 values = img.flatten()
 grid.point_data['my_array'] = values
 slices = grid.slice_orthogonal()
-
-pl.add_mesh(slices, cmap="gray")
-
+mesh = grid.contour(1, values, method='marching_cubes', rng=[1, 0], preference="points")
+dist = np.linalg.norm(mesh.points, axis=1)
+#pl.add_mesh(slices, cmap="gray")
+pl.add_mesh(mesh, scalars=dist)
 pl.export_html('pyvista.html')
 
 st.header("test html import")