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root/radiance/ray/src/util/vwright.c
Revision: 2.8
Committed: Sun Jun 14 00:33:16 2009 UTC (14 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad4R0
Changes since 2.7: +54 -27 lines
Log Message:
Added new genklemsamp utility and made vwright more useful

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: vwright.c,v 2.7 2008/03/11 02:21:47 greg Exp $";
3 #endif
4 /*
5 * Move a viewpoint the given distance to the right
6 */
7
8
9 #include "standard.h"
10
11 #include "view.h"
12
13 #include <ctype.h>
14
15 VIEW vw = STDVIEW;
16
17 char *progname;
18
19
20 int
21 main(
22 int argc,
23 char *argv[]
24 )
25 {
26 char linebuf[256];
27 char *err;
28 int gotview = 0;
29 FVECT hvn, vvn;
30 double dist;
31 register int i;
32
33 progname = argv[0];
34 ++argv; --argc;
35 while (argc && argv[0][0] == '-' && argv[0][1] == 'v') {
36 int rv;
37 if (argc > 2 && argv[0][2] == 'f') {
38 rv = viewfile(argv[1], &vw, NULL);
39 if (rv <= 0) {
40 fprintf(stderr, "%s: %s file '%s'\n",
41 progname,
42 rv < 0 ? "cannot open view" :
43 "no view in", argv[1]);
44 exit(1);
45 }
46 ++gotview;
47 ++argv; --argc;
48 } else {
49 rv = getviewopt(&vw, argc, argv);
50 if (rv < 0) {
51 fprintf(stderr, "%s: bad view option at '%s'\n",
52 progname, argv[0]);
53 exit(1);
54 }
55 ++gotview;
56 argv += rv; argc -= rv;
57 }
58 ++argv; --argc;
59 }
60 if (argc != 1)
61 goto userr;
62 if (!gotview)
63 while (fgets(linebuf, sizeof(linebuf), stdin) != NULL) {
64 if (linebuf[0] == '\n')
65 break;
66 if (isview(linebuf) && sscanview(&vw, linebuf) > 0)
67 ++gotview;
68 }
69 if (!gotview) {
70 fprintf(stderr, "%s: no view on standard input\n", progname);
71 exit(1);
72 }
73 if ((err= setview(&vw)) != NULL) {
74 fprintf(stderr, "%s: %s\n", progname, err);
75 exit(1);
76 }
77 VCOPY(hvn, vw.hvec);
78 normalize(hvn);
79 VCOPY(vvn, vw.vvec);
80 normalize(vvn);
81 if (isalpha(argv[0][0])) { /* print out variables */
82 switch (vw.type) {
83 case VT_PER: i=1; break;
84 case VT_PAR: i=2; break;
85 case VT_ANG: i=3; break;
86 case VT_HEM: i=4; break;
87 case VT_CYL: i=5; break;
88 case VT_PLS: i=6; break;
89 default: i=0; break;
90 }
91 printf("%st:%d;", argv[0], i);
92 printf("%spx:%g;%spy:%g;%spz:%g;", argv[0], vw.vp[0],
93 argv[0], vw.vp[1], argv[0], vw.vp[2]);
94 printf("%sdx:%g;%sdy:%g;%sdz:%g;", argv[0], vw.vdir[0],
95 argv[0], vw.vdir[1], argv[0], vw.vdir[2]);
96 printf("%sd:%g;", argv[0], vw.vdist);
97 printf("%sux:%g;%suy:%g;%suz:%g;", argv[0], vw.vup[0],
98 argv[0], vw.vup[1], argv[0], vw.vup[2]);
99 printf("%sh:%g;%sv:%g;", argv[0], vw.horiz,
100 argv[0], vw.vert);
101 printf("%ss:%g;%sl:%g;%so:%g;%sa:%g;",
102 argv[0], vw.hoff, argv[0], vw.voff,
103 argv[0], vw.vfore, argv[0], vw.vaft);
104 printf("%shx:%g;%shy:%g;%shz:%g;%shn:%g;",
105 argv[0], hvn[0], argv[0], hvn[1],
106 argv[0], hvn[2], argv[0], sqrt(vw.hn2));
107 printf("%svx:%g;%svy:%g;%svz:%g;%svn:%g;\n",
108 argv[0], vvn[0], argv[0], vvn[1],
109 argv[0], vvn[2], argv[0], sqrt(vw.vn2));
110 exit(0);
111 }
112 if (!isflt(argv[0]))
113 goto userr;
114 dist = atof(argv[0]);
115 for (i = 0; i < 3; i++)
116 vw.vp[i] += dist*hvn[i];
117 fprintview(&vw, stdout);
118 putchar('\n');
119 exit(0);
120 userr:
121 fprintf(stderr, "Usage: %s {offset|name}\n", progname);
122 exit(1);
123 }