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cs_geom.h
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1 #ifndef __CS_GEOM_H__
2 #define __CS_GEOM_H__
3 
4 /*============================================================================
5  * Geometric utility functions.
6  *===========================================================================*/
7 
8 /*
9  This file is part of Code_Saturne, a general-purpose CFD tool.
10 
11  Copyright (C) 1998-2019 EDF S.A.
12 
13  This program is free software; you can redistribute it and/or modify it under
14  the terms of the GNU General Public License as published by the Free Software
15  Foundation; either version 2 of the License, or (at your option) any later
16  version.
17 
18  This program is distributed in the hope that it will be useful, but WITHOUT
19  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
20  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
21  details.
22 
23  You should have received a copy of the GNU General Public License along with
24  this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
25  Street, Fifth Floor, Boston, MA 02110-1301, USA.
26 */
27 
28 /*----------------------------------------------------------------------------*/
29 
30 #include "cs_defs.h"
31 
32 /*----------------------------------------------------------------------------
33  * Local headers
34  *---------------------------------------------------------------------------*/
35 
36 /*---------------------------------------------------------------------------*/
37 
38 BEGIN_C_DECLS
39 
40 /*=============================================================================
41  * Local Macro definitions
42  *===========================================================================*/
43 
44 /*============================================================================
45  * Type definition
46  *===========================================================================*/
47 
48 /*=============================================================================
49  * Global variables
50  *===========================================================================*/
51 
52 /*=============================================================================
53  * Public function prototypes
54  *===========================================================================*/
55 
56 /*----------------------------------------------------------------------------*/
71 /*----------------------------------------------------------------------------*/
72 
73 void
74 cs_geom_closest_point(cs_lnum_t n_points,
75  const cs_real_t point_coords[][3],
76  const cs_real_t query_coords[3],
77  cs_lnum_t *point_id,
78  int *rank_id);
79 
80 /*----------------------------------------------------------------------------*/
116 /*----------------------------------------------------------------------------*/
117 
118 double
119 cs_geom_segment_intersect_face(int orient,
120  cs_lnum_t n_vertices,
121  const cs_lnum_t vertex_ids[],
122  const cs_real_t vtx_coord[][3],
123  const cs_real_t face_cog[3],
124  const cs_real_t sx0[3],
125  const cs_real_t sx1[3],
126  int n_crossings[2],
127  cs_real_t *face_norm);
128 
129 /*---------------------------------------------------------------------------*/
130 
131 END_C_DECLS
132 
133 #endif /* __CS_GEOM_H__ */
cs_defs.h
cs_geom_segment_intersect_face
double cs_geom_segment_intersect_face(int orient, cs_lnum_t n_vertices, const cs_lnum_t vertex_ids[], const cs_real_t vtx_coord[][3], const cs_real_t face_cog[3], const cs_real_t sx0[3], const cs_real_t sx1[3], int n_crossings[2], cs_real_t *face_norm)
Test if a line segment intersects a face.
Definition: cs_geom.c:228
END_C_DECLS
#define END_C_DECLS
Definition: cs_defs.h:468
cs_real_t
double cs_real_t
Floating-point value.
Definition: cs_defs.h:302
BEGIN_C_DECLS
#define BEGIN_C_DECLS
Definition: cs_defs.h:467
cs_geom_closest_point
void cs_geom_closest_point(cs_lnum_t n_points, const cs_real_t point_coords[][3], const cs_real_t query_coords[3], cs_lnum_t *point_id, int *rank_id)
find the closest point of a set to a given point in space.
Definition: cs_geom.c:162
cs_lnum_t
int cs_lnum_t
local mesh entity id
Definition: cs_defs.h:298
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