Lagrange Release v6.4.0

Infrastructure

• Update Catch2 to v3.
• Fix empty string warning in CMake.

Core module

• Remove libigl dependency in core module.
• Ensure la_debug_assert has no side effect.
• Fix NaN issue in internal_angle.

SurfaceMesh updates

• Rename SurfaceMesh::get_edges_from_corner to SurfaceMesh::get_corner_edge.
• Add new overload to SurfaceMesh::create_attribute.
• Add static_read and static_write support for copy_on_write_ptr.
• Fix wrong attribute name in output of map_attribute_in_place
• Fix function signature for vector_view.
• Add compute_normal, compute_vertex_normal and compute_weighted_corner_normal support.
• Add normalize_mesh support.
• Start to incrementally move functions based on Mesh data structure to legacy namespace.
• Add LAGRANGE_ENABLE_LEGACY_FUNCTIONS option in CMake and lagrange.enable_legacy option in MetaBuild. This option controls whether to build/include function under legacy namespace. Default is On.

File system module

• Fix missing include when using std::filesystem backend.

New modules

• bvh: computing boundary volumn hierarchies.
• partitioning: paritioning mesh vertices based on METIS.
• raycasting: ray casting based on Embree.
• subdivision: subdivision surfaces based on OpenSubdiv.
• volume: volumetric data based on OpenVDB.