geom/doc/salome/gui/GEOM/input/creating_filling.doc

/*!

\page create_filling_page Filling Surface with Edges

To generate a \b Filling in the <b>Main Menu</b> select <b>New Entity - > Generation  - > Filling</b>

To create a curvilinear face from several edges you need to define the
following parameters:
\n <b>Input Contours</b> - the list of edges/wires to use for creation
of the surface. You can select either several edges/wires or a
compound of them. To prepare for the filling, each input wire
is converted into a single BSpline curve by concatenating its edges.
List of edges/wires must contain more than one edge.
\n \b Minimum and <b>Maximum Degree</b> of equation of the resulting
BSpline or Besier curves describing the surface.
\n \b Tolerance for \b 2D and for \b 3D - minimum distance between the
created surface and the input contours.
\n <b>Number of Iterations</b> - defines the maximum number of iterations. The
iterations are repeated until the required tolerance is reached. So, a
greater number of iterations allows producing a better surface. 
\n <b>Method</b> - Kind of method to perform filling operation
<ol>
<li>Default - the standard behaviour.</li>
<li>Use edges orientation - the edges orientation is used: if an edge is
reversed, the curve from this edge is reversed before being used by the filling
algorithm.</li>
<li>Auto-correct edges orientation - curves orientation is changed to 
minimize the sum of distances between ends points of edges.</li>
</ol>

<b>Approximation</b> - if checked, BSpline curves are generated in
the process of surface construction (using
GeomAPI_PointsToBSplineSurface functionality). By default the surface
is created using Besier curves. The usage of <b>Approximation</b>
slows the algorithm, but allows building the surface for complex cases. 

\n The \b Result of the operation will be a GEOM_Object (face).

\n <b>TUI Command:</b> <em>geompy.MakeFilling(Contours, MinDegree, MaxDegree, Tol2D, Tol3D, NbIter)</em><br>
<b>Arguments:</b> List/compound of edges/wires + 7 Parameters
(Min. degree, Max. degree, 2D tolerance, 3D tolerance, Number of
iterations, Method, Approximation).
\n <b>Advanced options:</b> \ref preview_anchor "Preview"

\image html filling.png

\note This dialog supports navigation through the selectable objects (in OCC 3D viewer only):
- Scroll mouse wheel with pressed \em Ctrl key or press \em "S", \em "P" keys when input focus is
in the viewer to navigate between selectable objects.
- Press left mouse button to select an appropriate object to the dialog box.
.
For more details, please refer to the \em "Functionality common for OCC and VTK viewers" chapter
of the GUI module's documentation.

<b>Example:</b>

\image html filling_compoundsn.png "Initial edges"

\image html fillingsn.png "Resulting surface"

Sample <b>TUI Scripts</b> provide you with useful examples of creation of
\ref tui_creation_filling "Complex Geometric Objects".

*/