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Jukka Aho
95aac8a2d5
Three-stage modification to support both Lagrange and Serendipity basis types:
1. Added basis_type parameter (default :Lagrange) to all create_basis() functions
- Propagated through all three overloads with keyword argument
- Used in code generation for method signatures
2. Updated ELEMENT_TO_LAGRANGE mapping:
- Quad8: Changed to tuple (:Serendipity, :Quadrilateral) for 8-node serendipity
- Quad9: Remains :Quadrilateral for 9-node full Lagrange
- Added documentation explaining tuple format for serendipity elements
3. Enhanced generation loop to handle three topology cases:
- Simple symbols (e.g., :Triangle) → Lagrange{Triangle, P}
- Parametric functions (N -> Hexahedron{N}) → Lagrange{Hexahedron{N}, P}
- Serendipity tuples (:Serendipity, :Topology) → Serendipity{Topology, P}
Removed 3 duplicate function stub declarations (defined in basis_api.jl):
- get_reference_element_coordinates
- eval_basis!
- eval_dbasis!
This enables clean separation of Quad8 (Serendipity, 8 nodes) from Quad9 (Lagrange, 9 nodes).