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/*============================================================================
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* Define (conforming or non-conforming) mesh joinings.
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*============================================================================*/
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This file is part of Code_Saturne, a general-purpose CFD tool.
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Copyright (C) 1998-2011 EDF S.A.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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Street, Fifth Floor, Boston, MA 02110-1301, USA.
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/*----------------------------------------------------------------------------*/
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#if defined(HAVE_CONFIG_H)
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#include "cs_config.h"
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/*----------------------------------------------------------------------------
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* Standard C library headers
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*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------
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* Header for the current file
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*----------------------------------------------------------------------------*/
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#include "cs_prototypes.h"
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/*----------------------------------------------------------------------------*/
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/*============================================================================
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* User function definitions
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*============================================================================*/
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/*----------------------------------------------------------------------------
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* Define mesh joinings.
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* This is done by calling the cs_join_add() function for each joining
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* The arguments to cs_join_add() are:
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* sel_criteria <-- boundary face selection criteria string
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* fraction <-- value of the fraction parameter;
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* the initial tolerance radius associated to each vertex
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* is equal to the lenght of the shortest incident edge,
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* multiplied by this fraction.
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* plane <-- value of the plane parameter;
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* when subdividing faces, 2 faces are considered
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* coplanar and may be joined if angle between their
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* normals (in degrees) does not exceed this parameter.
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* verbosity <-- level of verbosity required
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* The function returns a number (1 to n) associated with the
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* new joining. This number may optionnally be used to assign advanced
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* parameters to the joining.
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*----------------------------------------------------------------------------*/
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int verbosity = 1, visualization;
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float fraction = 0.10, plane = 0.25;
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return; /* REMOVE_LINE_FOR_USE_OF_SUBROUTINE */
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verbosity = 1; /* debug level if >= 3 */
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visualization = 1; /* debug level if >= 3 */
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/* Add a joining operation */
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/* ----------------------- */
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join_num = cs_join_add("98 or 99",
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/*--------------------------------------------------------------------------*/
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/* Example with advanced parameters;
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Advanced parameters may be modified to solve errors during the
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joining step or to get a better mesh quality. */
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/* Merge tolerance factor:
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* used to locally modify the tolerance associated to each
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* vertex BEFORE the merge step.
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* = 0 => no vertex merge;
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* < 1 => vertex merge is more strict. It may increase the number
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* of tolerance reduction and so define smaller subset of
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* vertices to merge together but it can drive to loose
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* > 1 => vertex merge is less strict. The subset of vertices able
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* to be merged together is greater. */
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* this parameter is used to define a bound under which two vertices
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* are merged before the merge step.
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* Tolerance limit for the pre-merge = pmf * fraction. */
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/* Tolerance computation mode:
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* 1: (default) tol = min. edge length related to a vertex * fraction
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* 2: tolerance is computed like in mode 1 with in addition, the
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* multiplication by a coefficient equal to the max sin(e1, e2)
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* where e1 and e2 are two edges sharing the same vertex V for which
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* we want to compute the tolerance.
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* 11: as 1 but taking into account only the selected faces
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* 12: as 2 but taking into account only the selected faces */
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/* Intersection computation mode:
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* 1: (default) Original algorithm.
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* Try to snap intersection to extremity.
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* 2: New intersection algorithm.
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* Avoid snapping intersection to extremity. */
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/* Maximum number of equivalence breaks which is
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* enabled during the merge step. */
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/* Maximum number of sub-faces when splitting a selected face. */
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int max_sub_face = 100;
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/* tml, tmb and tmr are parameters of the searching algorithm for
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* face intersections between selected faces (octree structure).
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* Useful to adjust speed vs. memory consumption. */
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* deepest level reachable when building the tree */
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* max. number of bounding boxes which can be linked to a leaf of the tree
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* (not necessary true for the deepest level) */
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* stop refining the tree structure when
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* number of bounding boxes > tmr * number of faces to locate.
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* In parallel, a separate (usually lower) value may be set for
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* the initial coarse tree used to determine distribution.
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* Reducing this will help reduce memory consumption. */
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double tmr_distrib = 2.0;
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/* Set advanced parameters */
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cs_join_set_advanced_param(join_num,
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max_break, max_sub_face,
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tml, tmb, tmr, tmr_distrib);
added
removed
users/base/cs_user_join.c
