BRL-CAD
dir2ae.c
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1 /* D I R 2 A E. C
2  * BRL-CAD
3  *
4  * Copyright (c) 2008-2014 United States Government as represented by
5  * the U.S. Army Research Laboratory.
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public License
9  * version 2.1 as published by the Free Software Foundation.
10  *
11  * This library is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this file; see the file named COPYING for more
18  * information.
19  */
20 /** @file libged/dir2ae.c
21  *
22  * The dir2ae command.
23  *
24  */
25 
26 #include "common.h"
27 
28 #include <stdlib.h>
29 #include <ctype.h>
30 #include <string.h>
31 
32 #include "./ged_private.h"
33 
34 
35 int
36 ged_dir2ae(struct ged *gedp, int argc, const char *argv[])
37 {
38  fastf_t az, el;
39  vect_t dir;
40  double scan[3];
41  int iflag;
42  static const char *usage = "[-i] x y z";
43 
45  GED_CHECK_ARGC_GT_0(gedp, argc, GED_ERROR);
46 
47  /* initialize result */
48  bu_vls_trunc(gedp->ged_result_str, 0);
49 
50  /* must be wanting help */
51  if (argc == 1) {
52  bu_vls_printf(gedp->ged_result_str, "Usage: %s %s", argv[0], usage);
53  return GED_HELP;
54  }
55 
56  if (argv[1][0] == '-' && argv[1][1] == 'i' && argv[1][2] == '\0') {
57  iflag = 1;
58  --argc;
59  ++argv;
60  } else
61  iflag = 0;
62 
63  if (argc != 4) {
64  bu_vls_printf(gedp->ged_result_str, "Usage: %s %s", argv[0], usage);
65  return GED_ERROR;
66  }
67 
68  if (sscanf(argv[1], "%lf", &scan[X]) != 1 ||
69  sscanf(argv[2], "%lf", &scan[Y]) != 1 ||
70  sscanf(argv[3], "%lf", &scan[Z]) != 1) {
71  bu_vls_printf(gedp->ged_result_str, "Usage: %s %s", argv[0], usage);
72  return GED_ERROR;
73  }
74  /* convert from double to fastf_t */
75  VMOVE(dir, scan);
76  AZEL_FROM_V3DIR(az, el, dir);
77 
78  if (iflag)
79  VSCALE(dir, dir, -1);
80 
81  bu_vls_printf(gedp->ged_result_str, "%lf %lf", az, el);
82 
83  return GED_OK;
84 }
85 
86 
87 /*
88  * Local Variables:
89  * tab-width: 8
90  * mode: C
91  * indent-tabs-mode: t
92  * c-file-style: "stroustrup"
93  * End:
94  * ex: shiftwidth=4 tabstop=8
95  */
void usage(struct ged *gedp)
Definition: coil.c:315
#define GED_OK
Definition: ged.h:55
Definition: ged.h:338
void bu_vls_trunc(struct bu_vls *vp, int len)
Definition: vls.c:198
#define GED_CHECK_ARGC_GT_0(_gedp, _argc, _flags)
Definition: ged.h:202
Header file for the BRL-CAD common definitions.
int ged_dir2ae(struct ged *gedp, int argc, const char *argv[])
Definition: dir2ae.c:36
#define GED_ERROR
Definition: ged.h:61
Definition: color.c:49
#define GED_CHECK_DATABASE_OPEN(_gedp, _flags)
Definition: ged.h:114
struct bu_vls * ged_result_str
Definition: ged.h:357
void bu_vls_printf(struct bu_vls *vls, const char *fmt,...) _BU_ATTR_PRINTF23
Definition: vls.c:694
#define GED_HELP
Definition: ged.h:62
Definition: color.c:51
double fastf_t
Definition: defines.h:300
Definition: color.c:50