BRL-CAD
rotate_about.c
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1 /* R O T A T E _ A B O U T . 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/rotate_about.c
21  *
22  * The rotate_about 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_rotate_about(struct ged *gedp, int argc, const char *argv[])
37 {
38  static const char *usage = "[e|k|m|v]";
39 
42  GED_CHECK_ARGC_GT_0(gedp, argc, GED_ERROR);
43 
44  /* initialize result */
45  bu_vls_trunc(gedp->ged_result_str, 0);
46 
47  /* get "rotate about" point */
48  if (argc == 1) {
50  return GED_OK;
51  }
52 
53  /* Set rotate_about */
54  if (argc == 2 && argv[1][1] == '\0') {
55  switch (argv[1][0]) {
56  case 'e':
57  case 'k':
58  case 'm':
59  case 'v':
60  gedp->ged_gvp->gv_rotate_about = argv[1][0];
61  return GED_OK;
62  }
63  }
64 
65  bu_vls_printf(gedp->ged_result_str, "Usage: %s %s", argv[0], usage);
66  return GED_ERROR;
67 }
68 
69 
70 /*
71  * Local Variables:
72  * tab-width: 8
73  * mode: C
74  * indent-tabs-mode: t
75  * c-file-style: "stroustrup"
76  * End:
77  * ex: shiftwidth=4 tabstop=8
78  */
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.
#define GED_ERROR
Definition: ged.h:61
struct bview * ged_gvp
Definition: ged.h:361
#define GED_CHECK_VIEW(_gedp, _flags)
Definition: ged.h:140
#define GED_CHECK_DATABASE_OPEN(_gedp, _flags)
Definition: ged.h:114
char gv_rotate_about
indicates what point rotations are about
Definition: bview.h:219
struct bu_vls * ged_result_str
Definition: ged.h:357
int ged_rotate_about(struct ged *gedp, int argc, const char *argv[])
Definition: rotate_about.c:36
void bu_vls_printf(struct bu_vls *vls, const char *fmt,...) _BU_ATTR_PRINTF23
Definition: vls.c:694