BRL-CAD
size.c
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1 /* S I Z 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/size.c
21  *
22  * The size 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_size(struct ged *gedp, int argc, const char *argv[])
37 {
38  /* intentionally double for scan */
39  double size;
40  static const char *usage = "[s]";
41 
44  GED_CHECK_ARGC_GT_0(gedp, argc, GED_ERROR);
45 
46  /* initialize result */
47  bu_vls_trunc(gedp->ged_result_str, 0);
48 
49  /* get view size */
50  if (argc == 1) {
51  bu_vls_printf(gedp->ged_result_str, "%g",
52  gedp->ged_gvp->gv_size * gedp->ged_wdbp->dbip->dbi_base2local);
53  return GED_OK;
54  }
55 
56  /* set view size */
57  if (argc == 2) {
58  if (sscanf(argv[1], "%lf", &size) != 1
59  || size <= 0
60  || ZERO(size))
61  {
62  bu_vls_printf(gedp->ged_result_str, "bad size - %s", argv[1]);
63  return GED_ERROR;
64  }
65 
66  gedp->ged_gvp->gv_size = gedp->ged_wdbp->dbip->dbi_local2base * size;
67  if (gedp->ged_gvp->gv_size < RT_MINVIEWSIZE)
69  gedp->ged_gvp->gv_isize = 1.0 / gedp->ged_gvp->gv_size;
70  gedp->ged_gvp->gv_scale = 0.5 * gedp->ged_gvp->gv_size;
71  ged_view_update(gedp->ged_gvp);
72 
73  return GED_OK;
74  }
75 
76  bu_vls_printf(gedp->ged_result_str, "Usage: %s %s", argv[0], usage);
77  return GED_ERROR;
78 }
79 
80 
81 /*
82  * Local Variables:
83  * tab-width: 8
84  * mode: C
85  * indent-tabs-mode: t
86  * c-file-style: "stroustrup"
87  * End:
88  * ex: shiftwidth=4 tabstop=8
89  */
void usage(struct ged *gedp)
Definition: coil.c:315
#define GED_OK
Definition: ged.h:55
#define RT_MINVIEWSIZE
Definition: raytrace.h:1301
Definition: ged.h:338
struct db_i * dbip
Definition: raytrace.h:1266
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
struct rt_wdb * ged_wdbp
Definition: ged.h:340
Header file for the BRL-CAD common definitions.
void ged_view_update(struct bview *gvp)
Definition: vutil.c:33
#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
fastf_t gv_isize
1.0 / size
Definition: bview.h:213
fastf_t gv_scale
Definition: bview.h:211
fastf_t gv_size
2.0 * scale
Definition: bview.h:212
struct bu_vls * ged_result_str
Definition: ged.h:357
double dbi_base2local
unit conversion factors
Definition: raytrace.h:808
#define ZERO(val)
Definition: units.c:38
void bu_vls_printf(struct bu_vls *vls, const char *fmt,...) _BU_ATTR_PRINTF23
Definition: vls.c:694
double dbi_local2base
local2mm
Definition: raytrace.h:807
int ged_size(struct ged *gedp, int argc, const char *argv[])
Definition: size.c:36