From 6055052e1e7c7f8800aecd7b1b8a4650f7c6dee3 Mon Sep 17 00:00:00 2001
From: Bianca Giovanardi <bianca.giovanardi@gmail.com>
Date: Sun, 11 Jan 2026 15:36:28 +0100
Subject: [PATCH] io/summit: add possibility to include element type in
 {summit} mesh

---
 lib/mito/io/summit/MeshSummitWriter.h | 11 ++++++++---
 lib/mito/io/summit/writer.h           |  5 +++--
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/mito/io/summit/MeshSummitWriter.h b/lib/mito/io/summit/MeshSummitWriter.h
index a4a0b3f96..c11016324 100644
--- a/lib/mito/io/summit/MeshSummitWriter.h
+++ b/lib/mito/io/summit/MeshSummitWriter.h
@@ -33,11 +33,13 @@ namespace mito::io {
       public:
         // constructor
         MeshSummitWriter(
-            std::string filename, const mesh_type & mesh, const coord_system_type & coord_system) :
+            std::string filename, const mesh_type & mesh, const coord_system_type & coord_system,
+            std::string element_type) :
             Writer(filename),
             _mesh(mesh),
             _coord_system(coord_system),
-            _points()
+            _points(),
+            _element_type(element_type)
         {
             // index assigned to each point (start counting from 1, summit mesh convention)
             auto index = 1;
@@ -93,7 +95,7 @@ namespace mito::io {
                     outfile << _points.at(node->point()) << " ";
                 }
                 // TOFIX: material label is always 1 for now
-                outfile << 1 << std::endl;
+                outfile << 1 << " " << _element_type << std::endl;
             }
 
             // close the file
@@ -112,6 +114,9 @@ namespace mito::io {
 
         // a collection of points in the mesh
         points_type _points;
+
+        // the type of element
+        std::string _element_type;
     };
 
 }    // namespace mito::io
diff --git a/lib/mito/io/summit/writer.h b/lib/mito/io/summit/writer.h
index ae5d04e3d..a5a3a3149 100644
--- a/lib/mito/io/summit/writer.h
+++ b/lib/mito/io/summit/writer.h
@@ -13,10 +13,11 @@ namespace mito::io::summit {
     requires(utilities::same_dim_c<cellT, coordT>)
     auto writer(
         std::string filename, const mito::mesh::mesh_t<cellT> & mesh,
-        const geometry::coordinate_system_t<coordT> & coordinate_system) -> void
+        const geometry::coordinate_system_t<coordT> & coordinate_system,
+        std::string element_type = "") -> void
     {
         // create a writer
-        auto mesh_writer = mesh_writer_t(filename, mesh, coordinate_system);
+        auto mesh_writer = mesh_writer_t(filename, mesh, coordinate_system, element_type);
         // write
         return mesh_writer.write();
     }