+++ /dev/null
-/*!
-
-\page cartesian_algo_page Body Fitting 3D meshing algorithm
-
-Body Fitting algorithm generates hexahedrons of a Cartesian grid in
-the internal part of geometry and polyhedrons and other types of
-elements at the intersection of Cartesian cells with the geometrical
-boundary.
-
-\image html cartesian3D_sphere.png "A sphere meshed by Body Fitting algorithm"
-
-The meshing algorithm is as follows.
-<ol>
-<li> Lines of a Cartesian structured grid defined by
-\ref cartesian_hyp_anchor "Body Fitting Parameters" hypothesis are
-intersected with the geometry boundary, thus nodes lying on the
-boundary are found. This step also allows finding out for each node of
-the Cartesian grid if it is inside or outside the geometry. </li>
-<li> For each cell of the grid, check how many of its nodes are outside
-of the geometry boundary. Depending on a result of this check
-<ul>
-<li> skip a cell, if all its nodes are outside </li>
-<li> skip a cell, if it is too small according to <b> Size
- Threshold </b> parameter</li>
-<li> add a hexahedron in the mesh, if all nodes are inside </li>
-<li> add a polyhedron or another cell type in the mesh, if some
-nodes are inside and some outside. </li>
-</ul>
-</li>
-</ol>
-To apply this algorithm when you define your mesh, select <b>Body
- Fitting</b> in the list of 3D algorithms and add <b>Body Fitting
- Parameters</b> hypothesis. The following dialog will appear:
-
-<br>
-\anchor cartesian_hyp_anchor
-<h2>Body Fitting Parameters hypothesis</h2>
-
-\image html cartesian3D_hyp.png "Body Fitting Parameters hypothesis dialog"
-
-This dialog allows to define
-<ul>
- <li>\b Name of the algorithm. </li>
- <li> Minimal size of a cell truncated by the geometry boundary. If the
- size of a truncated grid cell is \b Threshold times less than a
- initial cell size, then a mesh element is not created. </li>
- <li> <b> Implement Edges </b> check-box activates incorporation of
- geometrical edges in the mesh.
-
-\image html cartesian_implement_edge.png "Implement Edges switched off to the left and on to the right"
-
- <li> <b>Definition mode</b> allows choosing how Cartesian structured
- grid is defined. Location of nodes along each grid axis is defined
- individually:
- <ul>
- <li> You can specify the \b Coordinates of grid nodes. \b Insert button
- inserts a node at \b Step distance (negative or positive) from the
- selected node. \b Delete button removes the selected node. Double
- click on a coordinate in the list enables its edition.
- \b Note that node coordinates are measured along directions of
- axes that can differ from the directions of the Global Coordinate
- System.</li>
- <li> You can define the \b Spacing of a grid as an algebraic formula
- <em>f(t)</em> where \a t is a position along a grid axis
- normalized at [0.0,1.0]. <em>f(t)</em> must be non-negative
- at 0. <= \a t <= 1. The whole extent of geometry can be
- divided into ranges with their own spacing formulas to apply;
- \a t varies between 0.0 and 1.0 within each \b Range. \b Insert button
- divides a selected range into two. \b Delete button adds the
- selected sub-range to the previous one. Double click on a range in
- the list enables edition of its right boundary. Double click on a
- function in the list enables its edition.
- </li> </ul>
- </li>
-
- <li> <b> Fixed Point</b> group allows defining an exact location of
- a grid node in the direction defined by spacing. The following cases
- are possible:
- <ul>
- <li>If all three directions are defined by spacing, there will
- be a mesh node at the <b> Fixed Point</b>. </li>
- <li>If two directions are defined by spacing, there will be at
- least a link between mesh nodes passing through the <b> Fixed
- Point</b>.</li>
- <li> If only one direction is defined by spacing, there will be
- at least an element facet passing through the <b> Fixed
- Point</b>.</li>
- <li>If no directions are defined by spacing, <b> Fixed Point</b>
- is disabled.</li>
- </ul>
- </li>
-
- <li> <b> Directions of Axes</b> group allows setting the directions of grid axes.
- <ul>
- <li>If <b> Orthogonal Axes </b> check-box is activated the
- axes remain orthogonal during their modification. </li>
- <li> Selection buttons enable snapping corresponding axes to
- direction of a geometrical edge selected in the Object
- Browser. Edge direction is defined by coordinates of its end
- points.</li>
- <li><b> Optimal Axes</b> button runs an algorithm that tries to
- set the axes to maximize the number of generated hexahedra.</li>
- <li><b> Reset </b> button returns the axes in a default position
- parallel to the axes of the Global Coordinate System.</li>
- </ul>
- </li>
- </ul>
-
-<br>
-<b>See Also</b> a sample TUI Script of a
-\ref tui_cartesian_algo "Usage of Body Fitting algorithm".
-
-*/
