-/*!
-
-\page projection_algos_page Projection Algorithms
-
-\tableofcontents
-
-Projection algorithms allow to define the mesh of a geometrical
-object by the projection of another already meshed geometrical object.
-
-\note Source and target geometrical objects mush be topologically
-equal, i.e. they must have same number of sub-shapes, connected to
-corresponding counterparts.
-
-\image html topo_equality.png Topologically equal faces suitable for 2D projection.
-
-
-\section projection_1D Projection 1D
-
-<b>Projection 1D</b> algorithm allows to define the mesh of an edge
-(or group of edges)
-by the projection of another already meshed edge (or group of edges).
-\n To apply this algorithm select the edge to be meshed (indicated in
-the field \b Geometry of <b>Create mesh</b> dialog box),
-<b>Projection1D</b> in the list of 1D algorithms and click the
-<em>"Add Hypothesis"</em> button.
-The following dialog box will appear:
-
-\image html projection_1d.png
-
-In this dialog you can define
-<ul>
- <li> the \b Name of the algorithm,</li>
- <li> the already meshed <b> Source Edge</b> and </li>
- <li> the <b>Source Mesh </b> (It can be omitted only when projecting
- a sub-mesh on another one of the same Mesh).</li>
- <li> It could also be necessary to define the orientation of edges,
- which is done by indicating the <b>Source Vertex</b> being the
- first point of the <b>Source Edge </b>and the <b>Target Vertex</b> being
- the first point of the edge being meshed.</li>
-</ul>
-<br>
-For a group of edges, <b>Source</b> and <b>Target</b> vertices should be
-shared by only one edge of the group. If <b>Source</b> and <b>Target</b>
-vertices are specified, the edges in the group must be connected.
-The source and target groups must contain equal number of edges
-and they must form topologically equal structures.
-
-\section projection_2D Projection 2D
-
-\n <b>Projection 2D</b> algorithm allows to define the mesh of a face
-(or group of faces) by the projection of another already meshed face
-(or group of faces). This algorithm works only if all edges of the
-target face have been discretized into the same number of
-segments as corresponding edges of the source face.
-
-To apply this algorithm select the face to be meshed (indicated in the
-field \b Geometry of <b>Create mesh</b> dialog box), <b>Projection
-2D</b> in the list of 2D algorithms and click the <em> "Add
-Hypothesis"</em> button. The following dialog box will appear:
-
-\image html projection_2d.png
-
-In this dialog you can define
-<ul>
- <li> the \b Name of the algorithm, </li>
- <li> the already meshed <b> Source Face </b> and </li>
- <li> the <b> Source Mesh </b> (It can be omitted only when
- projecting a submesh on another one of the same Mesh). </li>
- <li> It could also be necessary to define the orientation of mesh on
- the face, which is done by indicating two <b>Source Vertices</b>,
- which belong to the same edge of the <b>Source Face</b>, and
- two <b>Target Vertices</b>, which belong to the same edge of the
- face being meshed.</li>
-</ul>
-
-The groups of faces are suitable for this algorithm only if they
-contain an equal number of faces and form topologically equal
-structures.
-
-\section projection_1D2D Projection 1D-2D
-
-\n <b>Projection 1D-2D</b> algorithm differs from
-\ref projection_2D algorithm in one aspect: it generates mesh segments
-on edges of the face according to the projected 2D elements; thus it
-does not require the edges to be meshed by any other 1D algorithm;
-moreover it does not allow to mesh edges of the face using another
-algorithm via definition of sub-meshes.
-
-\section projection_3D Projection 3D
-
-\n <b>Projection 3D</b> algorithm allows to define the mesh of a shape by
-the projection of another already meshed shape. This algorithm works
-only if all faces and edges of the target shape have been meshed as 1D-2D
-Projections of the faces and edges of the source shape. Another
-limitation is that this algorithm currently works only on boxes.
-
-To apply this algorithm select the solid to be meshed (indicated in
-the field \b Geometry of <b>Create mesh</b> dialog box), <b>Projection
-3D</b> in the list of 3D algorithms and click the button. The
-following dialog box will appear:
-
-\image html projection_3d.png
-
-In this menu you can define the \b Name of the algorithm, the already
-meshed source <b>3D shape</b> and the \b Mesh (It can be omitted only when
-projecting a submesh on another one from the same global Mesh).
-It could also be necessary to define the orientation of mesh on the shape, which is
-done by indicating two <b>Source Vertices</b>, which belong to the same edge
-of the source <b>3D Shape</b>, and two <b>Target Vertices</b>, which belong to the
-same edge of the source <b>3D Shape</b>.
-
-<br><b>See Also</b> a sample TUI Script of a
-\ref tui_projection "Projection Algorithms".
-
-*/
-