+++ /dev/null
-/*!
-
-\page a2d_meshing_hypo_page 2D Meshing Hypotheses
-
-- \ref max_element_area_anchor "Max Element Area"
-- \ref length_from_edges_anchor "Length from Edges"
-- \ref hypo_quad_params_anchor "Quadrangle parameters"
-
-\anchor max_element_area_anchor
-<h2>Max Element Area</h2>
-
-<b>Max Element Area</b> hypothesis is applied for meshing of faces
-composing your geometrical object. Definition of this hypothesis
-consists of setting the <b>maximum area</b> of mesh faces,
-which will compose the mesh of these faces.
-
-\image html a-maxelarea.png
-
-\n
-
-\image html max_el_area.png "In this example, Max. element area is very small compared to the 1D hypothesis"
-
-<b>See Also</b> a sample TUI Script of a
-\ref tui_max_element_area "Maximum Element Area" hypothesis operation.
-
-\anchor length_from_edges_anchor
-<h2>Length from Edges</h2>
-
-<b>Length from edges</b> hypothesis defines the maximum linear size of
-mesh faces as an average length of mesh edges approximating
-the meshed face boundary.
-
-<b>See Also</b> a sample TUI Script of a
-\ref tui_length_from_edges "Length from Edges" hypothesis operation.
-
-\anchor hypo_quad_params_anchor
-<h2>Quadrangle parameters</h2>
-
-\image html hypo_quad_params_dialog.png "Quadrangle parameters: Transition"
-
-<b>Quadrangle parameters</b> is a hypothesis for \ref quad_ijk_algo_page.
-
-<b>Transition</b> tab is used to define the algorithm of transition
-between opposite sides of the face with a different number of
-segments on them. The following types of transition
-algorithms are available:
-
-- <b>Standard</b> is the default case, when both triangles and quadrangles
- are possible in the transition area along the finer meshed sides.
-- <b>Triangle preference</b> forces building only triangles in the
- transition area along the finer meshed sides.
- \note This type corresponds to <b>Triangle Preference</b> additional hypothesis,
- which is obsolete now.
-- <b>Quadrangle preference</b> forces building only quadrangles in the
- transition area along the finer meshed sides. This hypothesis has a
- restriction: the total quantity of segments on all
- four face sides must be even (divisible by 2).
- \note This type corresponds to <b>Quadrangle Preference</b> additional hypothesis,
- which is obsolete now.
-- <b>Quadrangle preference (reversed)</b> works in the same way and
- with the same restriction as <b>Quadrangle preference</b>, but
- the transition area is located along the coarser meshed sides.
-- <b>Reduced</b> type forces building only quadrangles and the transition
- between the sides is made gradually, layer by layer. This type has
- a limitation on the number of segments: one pair of opposite sides must have
- the same number of segments, the other pair must have an even total
- number of segments. In addition, the number of rows
- between sides with different discretization
- should be enough for the transition. Following the fastest transition
- pattern, three segments become one (see the image below), hence
- the least number of face rows needed to reduce from Nmax segments
- to Nmin segments is log<sub>3</sub>( Nmax / Nmin ). The number of
- face rows is equal to the number of segments on each of equally
- discretized sides.
-
-\image html reduce_three_to_one.png "The fastest transition pattern: 3 to 1"
-
-<b>Base vertex</b> tab allows using Quadrangle: Mapping
-algorithm for meshing of trilateral faces. In this case it is
-necessary to select the vertex, which will be used as the forth
-degenerated side of quadrangle.
-
-\image html hypo_quad_params_dialog_vert.png "Quadrangle parameters: Base Vertex"
-
-\image html hypo_quad_params_1.png "A face built from 3 edges"
-
-\image html hypo_quad_params_res.png "The resulting mesh"
-
-This parameter can be also used to mesh a segment of a circular face.
-Please, consider that there is a limitation on the selection of the
-vertex for the faces built with the angle > 180 degrees (see the picture).
-
-\image html hypo_quad_params_2.png "3/4 of a circular face"
-
-In this case, selection of a wrong vertex for the <b>Base vertex</b>
-parameter will generate a wrong mesh. The picture below
-shows the good (left) and the bad (right) results of meshing.
-
-\image html hypo_quad_params_res_2.png "The resulting meshes"
-
-\image html hypo_quad_params_dialog_enf.png "Quadrangle parameters: Enforced nodes"
-
-<b>Enforced nodes</b> tab allows defining points, where the
-algorithm should create nodes. There are two ways to define positions
-of the enforced nodes.
-<ul>
- <li>\b Vertices group allows to set up shapes whose vertices will
- define positions of the enforced nodes. Only vertices successfully
- projected to the meshed face and located close enough to the
- meshed face will be used to create the enforced nodes.</li>
- <li> \b Points group allows to explicitly define coordinates of
- points used to create the enforced nodes. Only points successfully
- projected to the meshed face and located close enough to the
- meshed face will be used to create the enforced nodes.</li>
-</ul>
-\note <b>Enforced nodes</b> cannot be created at \b Reduced transition type.
-
-Let us see how the algorithm works:
-<ul>
- <li> Initially positions of nodes are computed without taking into
- account the enforced vertex (yellow point).</li>
-\image html hypo_quad_params_enfnodes_algo1.png "Initial mesh"
-
- <li> Then the node closest to the enforced vertex is
- detected. Extreme nodes of the row and column of the detected node
- are used to create virtual edges (yellow lines) ending at the
- enforced vertex. </li>
-\image html hypo_quad_params_enfnodes_algo2.png "Creation of virtual edges"
-
- <li> Consequently, the meshed face is divided by the virtual
- edges into four quadrilateral sub-domains each of which is meshed
- as usually: the nodes of the row and column of the detected node are
- moved to the virtual edges and the quadrilateral elements are
- constructed.
-
-\image html hypo_quad_params_enfnodes_algo3.png "Final mesh"
-
-</ul>
-If there are several enforced vertices, the algorithm is applied
-recursively to the formed sub-domains.
-
-<b>See Also</b> a sample TUI Script of a
-\ref tui_quadrangle_parameters "Quadrangle Parameters" hypothesis.
-
-<br>
-*/
