.. _modifying_meshes_page:

****************
Modifying meshes
****************

Salome provides a vast specter of mesh modification and transformation operations, giving the possibility to:

* :ref:`adding_nodes_and_elements_page` mesh elements from nodes to polyhedrons at an arbitrary place in the mesh.
* :ref:`adding_quadratic_elements_page` mesh elements from quadratic segments to quadratic hexahedrons at an arbitrary place in the mesh.
* :ref:`removing_nodes_and_elements_page` any existin" mesh elements and nodes.
* :ref:`translation_page` in the indicated direction the mesh or some of its elements.
* :ref:`rotation_page` by the indicated axis and angle the mesh or some of its elements.
* :ref:`scale_page` the mesh or some of its elements.
* :ref:`symmetry_page` the mesh through a point, a vector or a plane of symmetry.
* :ref:`double_nodes_page`. Duplication of nodes can be useful to emulate a crack in the model.
* Unite meshes by :ref:`sewing_meshes_page` free borders, border to side or side elements.
* :ref:`merging_nodes_page`, coincident within the indicated tolerance.
* :ref:`merging_elements_page` based on the same nodes.
* :ref:`mesh_through_point_page` to an arbitrary location with consequent transformation of all adjacent elements.
* :ref:`diagonal_inversion_of_elements_page` between neighboring triangles.
* :ref:`uniting_two_triangles_page`.
* :ref:`uniting_set_of_triangles_page`.
* :ref:`changing_orientation_of_elements_page` of the selected elements.
* :ref:`reorient_faces_page` by several means.
* :ref:`cutting_quadrangles_page` into two triangles.
* :ref:`split_to_tetra_page` volumic elements into tetrahedra or prisms.
* :ref:`split_biquad_to_linear_page` elements into linear ones without creation of additional nodes.
* :ref:`smoothing_page` elements, reducung distortions in them by adjusting the locations of nodes.
* Create an :ref:`extrusion_page` along a vector or by normal to a discretized surface.
* Create an :ref:`extrusion_along_path_page`.
* Create elements by :ref:`revolution_page` of the selected nodes and elements.
* Apply :ref:`pattern_mapping_page`.
* :ref:`convert_to_from_quadratic_mesh_page`, or vice versa.
* :ref:`make_2dmesh_from_3d_page`.
* :ref:`generate_flat_elements_page`.
* :ref:`cut_mesh_by_plane_page`.


.. note::
	It is possible to :ref:`edit_anchor` of a lower dimension before generation of the mesh of a higher dimension.


.. note::
	It is possible to use the variables defined in the SALOME **NoteBook** to specify the numerical parameters used for modification of any object.


.. toctree::
	:maxdepth: 2

	adding_nodes_and_elements.rst
	adding_quadratic_elements.rst 
	removing_nodes_and_elements.rst 
	translation.rst
	rotation.rst
	scale.rst
	symmetry.rst
	double_nodes_page.rst 
	sewing_meshes.rst
	merging_nodes.rst
	merging_elements.rst
	mesh_through_point.rst 
	diagonal_inversion_of_elements.rst 
	uniting_two_triangles.rst 
	uniting_set_of_triangles.rst
	changing_orientation_of_elements.rst
	reorient_faces.rst
	cutting_quadrangles.rst
	split_to_tetra.rst
	split_biquad_to_linear.rst
	smoothing.rst
	extrusion.rst
	extrusion_along_path.rst
	revolution.rst
	pattern_mapping.rst
	convert_to_from_quadratic_mesh.rst
	make_2dmesh_from_3d.rst
	generate_flat_elements.rst
	cut_mesh_by_plane.rst