BRL-CAD
scale_rhc.c
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1 /* S C A L E _ R H C . 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/scale_rhc.c
21  *
22  * The scale_rhc command.
23  */
24 
25 #include "common.h"
26 
27 #include <string.h>
28 
29 #include "bu/cmd.h"
30 #include "rtgeom.h"
31 #include "raytrace.h"
32 
33 #include "./ged_private.h"
34 
35 int
36 _ged_scale_rhc(struct ged *gedp, struct rt_rhc_internal *rhc, const char *attribute, fastf_t sf, int rflag)
37 {
38  RT_RHC_CK_MAGIC(rhc);
39 
40  switch (attribute[0]) {
41  case 'b':
42  case 'B':
43  if (!rflag)
44  sf /= MAGNITUDE(rhc->rhc_B);
45 
46  VSCALE(rhc->rhc_B, rhc->rhc_B, sf);
47  break;
48  case 'h':
49  case 'H':
50  if (!rflag)
51  sf /= MAGNITUDE(rhc->rhc_H);
52 
53  VSCALE(rhc->rhc_H, rhc->rhc_H, sf);
54  break;
55  case 'c':
56  case 'C':
57  if (rflag)
58  rhc->rhc_c *= sf;
59  else
60  rhc->rhc_c = sf;
61 
62  break;
63  case 'r':
64  case 'R':
65  if (rflag)
66  rhc->rhc_r *= sf;
67  else
68  rhc->rhc_r = sf;
69 
70  break;
71  default:
72  bu_vls_printf(gedp->ged_result_str, "bad rhc attribute - %s", attribute);
73  return GED_ERROR;
74  }
75 
76  return GED_OK;
77 }
78 
79 
80 /*
81  * Local Variables:
82  * tab-width: 8
83  * mode: C
84  * indent-tabs-mode: t
85  * c-file-style: "stroustrup"
86  * End:
87  * ex: shiftwidth=4 tabstop=8
88  */
#define GED_OK
Definition: ged.h:55
Definition: ged.h:338
Header file for the BRL-CAD common definitions.
int _ged_scale_rhc(struct ged *gedp, struct rt_rhc_internal *rhc, const char *attribute, fastf_t sf, int rflag)
Definition: scale_rhc.c:36
#define GED_ERROR
Definition: ged.h:61
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
double fastf_t
Definition: defines.h:300