From a332d79736ff1f3fc12393d5a3f915cce0a15d64 Mon Sep 17 00:00:00 2001
From: Jukka Aho <ahojukka5@gmail.com>
Date: Sun, 9 Nov 2025 21:03:39 +0200
Subject: [PATCH] fix(elements): Update Poi1 to non-parametric AbstractBasis

Changes to src/elements/elements_lagrange.jl:
- Changed Poi1 from AbstractBasis{0} to AbstractBasis (non-parametric)
- Added nnodes(::Type{Poi1}) = 1 method
- Added nnodes(::Poi1) = 1 instance method
- Added comment explaining Poi1 as 0D point element
- Resolves type parameter mismatch with new AbstractBasis definition
---
 src/elements/elements_lagrange.jl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/elements/elements_lagrange.jl b/src/elements/elements_lagrange.jl
index 2a0e718..6ee3563 100644
--- a/src/elements/elements_lagrange.jl
+++ b/src/elements/elements_lagrange.jl
@@ -1,7 +1,12 @@
 # This file is a part of JuliaFEM.
 # License is MIT: see https://github.com/JuliaFEM/FEMBase.jl/blob/master/LICENSE
 
-struct Poi1 <: AbstractBasis{0} end
+# Poi1: 0D point element (single node, no parametric coordinates)
+struct Poi1 <: AbstractBasis end
+
+# nnodes for Poi1
+nnodes(::Type{Poi1}) = 1
+nnodes(::Poi1) = 1
 
 function get_basis(::E, ::Any, ::Any) where E<:AbstractElement{M,Poi1} where M
     return [1]