1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: vwright.c,v 2.8 2009/06/14 00:33:16 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 *err; |
27 |
int gotview = 0; |
28 |
FVECT hvn, vvn; |
29 |
double dist; |
30 |
int i; |
31 |
|
32 |
progname = argv[0]; |
33 |
++argv; --argc; |
34 |
while (argc && argv[0][0] == '-' && argv[0][1] == 'v') { |
35 |
int rv; |
36 |
if (argc > 2 && argv[0][2] == 'f') { |
37 |
rv = viewfile(argv[1], &vw, NULL); |
38 |
if (rv <= 0) { |
39 |
fprintf(stderr, "%s: %s file '%s'\n", |
40 |
progname, |
41 |
rv < 0 ? "cannot open view" : |
42 |
"no view in", argv[1]); |
43 |
exit(1); |
44 |
} |
45 |
++gotview; |
46 |
++argv; --argc; |
47 |
} else { |
48 |
rv = getviewopt(&vw, argc, argv); |
49 |
if (rv < 0) { |
50 |
fprintf(stderr, "%s: bad view option at '%s'\n", |
51 |
progname, argv[0]); |
52 |
exit(1); |
53 |
} |
54 |
++gotview; |
55 |
argv += rv; argc -= rv; |
56 |
} |
57 |
++argv; --argc; |
58 |
} |
59 |
if (argc != 1) |
60 |
goto userr; |
61 |
if (!gotview) { |
62 |
gotview = viewfile(NULL, &vw, NULL); |
63 |
if (gotview <= 0) { |
64 |
fprintf(stderr, "%s: no view on standard input\n", |
65 |
progname); |
66 |
exit(1); |
67 |
} |
68 |
} |
69 |
if ((err= setview(&vw)) != NULL) { |
70 |
fprintf(stderr, "%s: %s\n", progname, err); |
71 |
exit(1); |
72 |
} |
73 |
VCOPY(hvn, vw.hvec); |
74 |
normalize(hvn); |
75 |
VCOPY(vvn, vw.vvec); |
76 |
normalize(vvn); |
77 |
if (isalpha(argv[0][0])) { /* print out variables */ |
78 |
switch (vw.type) { |
79 |
case VT_PER: i=1; break; |
80 |
case VT_PAR: i=2; break; |
81 |
case VT_ANG: i=3; break; |
82 |
case VT_HEM: i=4; break; |
83 |
case VT_CYL: i=5; break; |
84 |
case VT_PLS: i=6; break; |
85 |
default: i=0; break; |
86 |
} |
87 |
printf("%st:%d;", argv[0], i); |
88 |
printf("%spx:%g;%spy:%g;%spz:%g;", argv[0], vw.vp[0], |
89 |
argv[0], vw.vp[1], argv[0], vw.vp[2]); |
90 |
printf("%sdx:%g;%sdy:%g;%sdz:%g;", argv[0], vw.vdir[0], |
91 |
argv[0], vw.vdir[1], argv[0], vw.vdir[2]); |
92 |
printf("%sd:%g;", argv[0], vw.vdist); |
93 |
printf("%sux:%g;%suy:%g;%suz:%g;", argv[0], vw.vup[0], |
94 |
argv[0], vw.vup[1], argv[0], vw.vup[2]); |
95 |
printf("%sh:%g;%sv:%g;", argv[0], vw.horiz, |
96 |
argv[0], vw.vert); |
97 |
printf("%ss:%g;%sl:%g;%so:%g;%sa:%g;", |
98 |
argv[0], vw.hoff, argv[0], vw.voff, |
99 |
argv[0], vw.vfore, argv[0], vw.vaft); |
100 |
printf("%shx:%g;%shy:%g;%shz:%g;%shn:%g;", |
101 |
argv[0], hvn[0], argv[0], hvn[1], |
102 |
argv[0], hvn[2], argv[0], sqrt(vw.hn2)); |
103 |
printf("%svx:%g;%svy:%g;%svz:%g;%svn:%g;\n", |
104 |
argv[0], vvn[0], argv[0], vvn[1], |
105 |
argv[0], vvn[2], argv[0], sqrt(vw.vn2)); |
106 |
exit(0); |
107 |
} |
108 |
if (!isflt(argv[0])) |
109 |
goto userr; |
110 |
dist = atof(argv[0]); |
111 |
VSUM(vw.vp, vw.vp, hvn, dist); |
112 |
fprintview(&vw, stdout); |
113 |
fputc('\n', stdout); |
114 |
exit(0); |
115 |
userr: |
116 |
fprintf(stderr, "Usage: %s {offset|name}\n", progname); |
117 |
exit(1); |
118 |
} |