Add MeshCut and MeshSection services

arcane/src/arcane/core/ArcaneTypes.h

@@ -131,6 +131,7 @@ class IMeshBase;
 class IMeshPartitionConstraint;
 class IUserDataList;
 class IMeshBuilder;
+class IMeshSection;
 class MeshHandle;
 class MeshHandleOrMesh;
 class MeshBuildInfo;

arcane/src/arcane/core/IMeshSection.h

@@ -0,0 +1,99 @@
+// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
+//-----------------------------------------------------------------------------
+// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
+// See the top-level COPYRIGHT file for details.
+// SPDX-License-Identifier: Apache-2.0
+//-----------------------------------------------------------------------------
+/*---------------------------------------------------------------------------*/
+/* IMeshSection.h                                              (C) 2000-2026 */
+/*                                                                           */
+/* Service interface allowing the creation of a mesh with a section of       */
+/* another mesh.                                                             */
+/*---------------------------------------------------------------------------*/
+#ifndef ARCANE_CORE_IMESHSECTION_H
+#define ARCANE_CORE_IMESHSECTION_H
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+
+#include "arcane/core/ArcaneTypes.h"
+
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+
+namespace Arcane
+{
+
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+
+/*!
+ * \brief Service interface allowing the creation of a mesh with a section of
+ * another mesh.
+ */
+class ARCANE_CORE_EXPORT IMeshSection
+{
+ public:
+
+  //! Releases resources
+  virtual ~IMeshSection() = default;
+
+ public:
+
+  /*!
+   * \brief Method allowing to add a plane to the cut service. The use of
+   * these planes depends on the service.
+   *
+   * \param p0 Point of the plane.
+   * \param normal Normal of the plane.
+   */
+  virtual void addPlane(const Real3& p0, const Real3& normal) = 0;
+
+  /*!
+   * \brief Method allowing to add a set of variables to copy on the
+   * new mesh.
+   *
+   * \param variables A set of variable on the original mesh.
+   */
+  virtual void setVariables(VariableCollection variables) = 0;
+
+  /*!
+   * \brief Method allowing to get a set of variables copied on the new
+   * mesh.
+   *
+   * \return A set of variables on the cloned mesh.
+   */
+  virtual VariableCollection variables() = 0;
+
+  /*!
+   * \brief Method allowing to set a unique id allowing to create multiple
+   * section services for a mesh.
+   *
+   * \param unique_id Mesh unique id to apply.
+   */
+  virtual void setServiceMeshUniqueId(Int32 unique_id) = 0;
+
+  /*!
+   * \brief Method allowing to update the mesh section with all planes.
+   *
+   * If a previous call has edited the mesh, all the cells will be destroyed
+   * before update.
+   */
+  virtual void updateSection() = 0;
+
+  /*!
+   * \brief Méthod allowing to get the mesh section.
+   *
+   * \return The mesh section.
+   */
+  virtual MeshHandle meshSection() = 0;
+};
+
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+
+} // namespace Arcane
+
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+
+#endif

arcane/src/arcane/core/InterfaceImpl.cc

@@ -136,6 +136,7 @@
 #include "arcane/core/MeshEvents.h"
 #include "arcane/core/IExternalPlugin.h"
 #include "arcane/core/IMeshSubdivider.h"
+#include "arcane/core/IMeshSection.h"
 
 #include "arcane/core/IMeshInitialAllocator.h"
 #include "arcane/core/internal/IItemFamilyInternal.h"

arcane/src/arcane/core/srcs.cmake

@@ -248,6 +248,7 @@ set(ARCANE_ORIGINAL_SOURCES
   IMeshPartitionConstraintMng.h
   IMeshPartitioner.h
   IMeshPartitionerBase.h
+  IMeshSection.h
   IMeshStats.h
   IMeshSubMeshTransition.h
   IMeshUniqueIdMng.h

arcane/src/arcane/std/MeshCut.axl

@@ -0,0 +1,21 @@
+<?xml version="1.0" ?>
+
+<service name="MeshCut" type="caseoption" type2="subdomain">
+  <description>
+    Service allowing the creation of a mesh with a cut of another mesh.
+  </description>
+
+  <interface name="Arcane::IMeshSection" inherited="true"/>
+
+  <variables>
+  </variables>
+
+  <options>
+    <simple name="unique-id-service-mesh" type="int32" default="0">
+      <description>
+        UniqueID of service mesh. Useful if you need to create multiple instances of this service for a mesh.
+      </description>
+    </simple>
+  </options>
+
+</service>