File: s1860.c

package info (click to toggle)
sisl 4.6.0-2
  • links: PTS
  • area: main
  • in suites: bookworm, bullseye, buster, sid, trixie
  • size: 11,560 kB
  • sloc: ansic: 84,814; cpp: 4,717; makefile: 5
file content (158 lines) | stat: -rw-r--r-- 5,204 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/*
 * Copyright (C) 1998, 2000-2007, 2010, 2011, 2012, 2013 SINTEF ICT,
 * Applied Mathematics, Norway.
 *
 * Contact information: E-mail: tor.dokken@sintef.no                      
 * SINTEF ICT, Department of Applied Mathematics,                         
 * P.O. Box 124 Blindern,                                                 
 * 0314 Oslo, Norway.                                                     
 *
 * This file is part of SISL.
 *
 * SISL is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version. 
 *
 * SISL is distributed in the hope that it will be useful,        
 * but WITHOUT ANY WARRANTY; without even the implied warranty of         
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with SISL. If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public
 * License, a covered work must retain the producer line in every data
 * file that is created or manipulated using SISL.
 *
 * Other Usage
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the SISL library without
 * disclosing the source code of your own applications.
 *
 * This file may be used in accordance with the terms contained in a
 * written agreement between you and SINTEF ICT. 
 */

#include "sisl-copyright.h"

/*
 *
 * $Id: s1860.c,v 1.4 2001-03-19 15:58:55 afr Exp $
 *
 */


#define S1860

#include "sislP.h"

#if defined(SISLNEEDPROTOTYPES)
void s1860(SISLSurf *ps,double eview[],int idim,double aepsco,double aepsge,
	   int *jpt,double **gpar,int *jcrv,SISLIntcurve ***wcurve,int *jstat)
#else
void s1860(ps,eview,idim,aepsco,aepsge,jpt,gpar,jcrv,wcurve,jstat)
     SISLSurf     *ps;
     double   eview[];
     int      idim;
     double   aepsco;
     double   aepsge;
     int      *jpt;
     double   **gpar;
     int      *jcrv;
     SISLIntcurve ***wcurve;
     int      *jstat;
#endif
/*
*********************************************************************
*
*********************************************************************
*
* PURPOSE    : Find the silhouette curves and points of a surface when
*              the surface is viewed from a specific direction. In
*              addition to the points and curves found by this routine,
*              break curves and edge-curves might be silhouette curves.
*
*
*
* INPUT      : ps  - Pointer to the surface.
*              eview  - The direction vector of the viewing.
*              idim   - Dimension of the space in which eview lies.
*              aepsco - Computational resolution.
*              aepsge - Geometry resolution.
*
*
*
* OUTPUT     : jpt    - Number of single silhouette points.
*              gpar   - Array containing the parameter values of the
*                       single silhouette points in the parameter
*                       plane of the surface. The points lie continuous.
*                       Silhouette curves are stored in wcurve.
*              jcrv   - Number of silhouette curves.
*              wcurve - Array containing descriptions of the silhouette
*                       curves. The curves are only described by points
*                       in the parameter plane. The curve-pointers points
*                       to nothing. (See description of Intcurve
*                       in intcurve.dcl).
*              jstat  - status messages
*                                         > 0      : warning
*                                         = 0      : ok
*                                         < 0      : error
*
*
* METHOD     :
*
*
* REFERENCES : Main routine written by Vibeke Skytt, SI, 1988.
*
* CALLS      : sh1860, s6err.
*
* WRITTEN BY : Christophe Rene Birkeland, SINTEF, 93-06.
* Revised by : Paal Fugelli, SINTEF, Oslo, Norway, Jan. 1995.
*              Made deallocation of 'wsurf' safer.
*
*********************************************************************
*/
{
  int kstat = 0;              /* Local status variable.                      */
  int kpos = 0;               /* Position of error.                          */
  int i;
  int trackflag = 0;
  int jtrack;
  SISLTrack **wtrack=SISL_NULL;
  int jsurf;
  SISLIntsurf **wsurf=SISL_NULL;
  int *pretop=SISL_NULL;

  sh1860(ps,eview,idim,aepsco,aepsge,trackflag,&jtrack,&wtrack,
	 jpt,gpar,&pretop,jcrv,wcurve,&jsurf,&wsurf,&kstat);
  if(kstat < 0) goto error;

  if(pretop != SISL_NULL) freearray(pretop);

  if ( wsurf != SISL_NULL )
  {
    for( i=0;  i < jsurf;  i++ )
      if ( wsurf[i] != SISL_NULL )  freeIntsurf(wsurf[i]);
    freearray(wsurf);
  }

  if(jsurf > 0)
    *jstat=10;
  else
    *jstat = 0;
  goto out;

  /* Error in lower level routine.  */

  error :
    *jstat = kstat;
    s6err("s1860",*jstat,kpos);
    goto out;

  out:
    return;
}