FEM: mesh tools, quad4, fix mesh area (this has been wrong for years :-()
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@@ -1287,7 +1287,7 @@ def get_ref_facenodes_areas(
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mesh_face_t1_area = get_triangle_area(P1, P2, P3)
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mesh_face_t2_area = get_triangle_area(P1, P3, P4)
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mesh_face_area = mesh_face_t1_area + mesh_face_t1_area
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mesh_face_area = mesh_face_t1_area + mesh_face_t2_area
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corner_node_area = mesh_face_area / 4.0
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node_area_table.append((face_table[mf][0], corner_node_area))
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