7 |
|
|
8 |
|
#include "platform.h" |
9 |
|
#include "standard.h" |
10 |
+ |
#include "random.h" |
11 |
|
#include "view.h" |
12 |
|
|
13 |
|
typedef void putfunc(FVECT ro, FVECT rd); |
25 |
|
|
26 |
|
double pa = 1.; |
27 |
|
|
28 |
+ |
double pj = 0.; |
29 |
+ |
|
30 |
|
int zfd = -1; |
31 |
|
|
32 |
|
int fromstdin = 0; |
33 |
|
|
34 |
+ |
int unbuffered = 0; |
35 |
+ |
|
36 |
+ |
int repeatcnt = 1; |
37 |
+ |
|
38 |
|
char *progname; |
39 |
|
|
40 |
|
|
46 |
|
{ |
47 |
|
char *err; |
48 |
|
int rval, getdim = 0; |
49 |
< |
register int i; |
49 |
> |
int i; |
50 |
|
|
51 |
|
progname = argv[0]; |
52 |
|
if (argc < 2) |
60 |
|
break; |
61 |
|
case 'f': /* float */ |
62 |
|
putr = putf; |
63 |
+ |
SET_FILE_BINARY(stdout); |
64 |
|
break; |
65 |
|
case 'd': /* double */ |
66 |
|
putr = putd; |
67 |
+ |
SET_FILE_BINARY(stdout); |
68 |
|
break; |
69 |
|
default: |
70 |
|
goto userr; |
105 |
|
exit(1); |
106 |
|
} |
107 |
|
break; |
108 |
< |
case 'p': /* pixel aspect ratio */ |
109 |
< |
pa = atof(argv[++i]); |
108 |
> |
case 'c': /* repeat count */ |
109 |
> |
repeatcnt = atoi(argv[++i]); |
110 |
|
break; |
111 |
+ |
case 'p': /* pixel aspect or jitter */ |
112 |
+ |
if (argv[i][2] == 'a') |
113 |
+ |
pa = atof(argv[++i]); |
114 |
+ |
else if (argv[i][2] == 'j') |
115 |
+ |
pj = atof(argv[++i]); |
116 |
+ |
else |
117 |
+ |
goto userr; |
118 |
+ |
break; |
119 |
|
case 'i': /* get pixels from stdin */ |
120 |
|
fromstdin = 1; |
121 |
|
break; |
122 |
+ |
case 'u': /* unbuffered output */ |
123 |
+ |
unbuffered = 1; |
124 |
+ |
break; |
125 |
|
default: |
126 |
|
goto userr; |
127 |
|
} |
161 |
|
exit(0); |
162 |
|
userr: |
163 |
|
fprintf(stderr, |
164 |
< |
"Usage: %s [ -i -f{a|f|d} | -d ] { view opts .. | picture [zbuf] }\n", |
164 |
> |
"Usage: %s [ -i -u -f{a|f|d} -c rept | -d ] { view opts .. | picture [zbuf] }\n", |
165 |
|
progname); |
166 |
|
exit(1); |
167 |
|
} |
168 |
|
|
169 |
|
|
170 |
|
static void |
171 |
+ |
jitterloc( |
172 |
+ |
RREAL loc[2] |
173 |
+ |
) |
174 |
+ |
{ |
175 |
+ |
if (pj > FTINY) { |
176 |
+ |
loc[0] += pj*(.5 - frandom())/rs.xr; |
177 |
+ |
loc[1] += pj*(.5 - frandom())/rs.yr; |
178 |
+ |
} |
179 |
+ |
} |
180 |
+ |
|
181 |
+ |
|
182 |
+ |
static void |
183 |
|
pix2rays( |
184 |
|
FILE *fp |
185 |
|
) |
187 |
|
static FVECT rorg, rdir; |
188 |
|
float zval; |
189 |
|
double px, py; |
190 |
+ |
RREAL loc[2]; |
191 |
|
int pp[2]; |
192 |
|
double d; |
193 |
< |
register int i; |
193 |
> |
int i; |
194 |
|
|
195 |
|
while (fscanf(fp, "%lf %lf", &px, &py) == 2) { |
196 |
|
px += .5; py += .5; |
197 |
< |
if (px < 0 || px >= rs.xr || |
165 |
< |
py < 0 || py >= rs.yr) { |
166 |
< |
fprintf(stderr, |
167 |
< |
"%s: (x,y) pair (%.0f,%.0f) out of range\n", |
168 |
< |
progname, px, py); |
169 |
< |
exit(1); |
170 |
< |
} |
197 |
> |
loc[0] = px/rs.xr; loc[1] = py/rs.yr; |
198 |
|
if (zfd >= 0) { |
199 |
< |
loc2pix(pp, &rs, px/rs.xr, py/rs.yr); |
199 |
> |
loc2pix(pp, &rs, loc[0], loc[1]); |
200 |
|
if (lseek(zfd, |
201 |
|
(pp[1]*scanlen(&rs)+pp[0])*sizeof(float), |
202 |
|
SEEK_SET) < 0 || |
207 |
|
exit(1); |
208 |
|
} |
209 |
|
} |
210 |
< |
d = viewray(rorg, rdir, &vw, px/rs.xr, py/rs.yr); |
210 |
> |
jitterloc(loc); |
211 |
> |
d = viewray(rorg, rdir, &vw, loc[0], loc[1]); |
212 |
|
if (d < -FTINY) |
213 |
|
rorg[0] = rorg[1] = rorg[2] = |
214 |
|
rdir[0] = rdir[1] = rdir[2] = 0.; |
221 |
|
rdir[0] *= d; rdir[1] *= d; rdir[2] *= d; |
222 |
|
} |
223 |
|
(*putr)(rorg, rdir); |
224 |
+ |
if (unbuffered) |
225 |
+ |
fflush(stdout); |
226 |
|
} |
227 |
|
if (!feof(fp)) { |
228 |
|
fprintf(stderr, "%s: expected px py on input\n", progname); |
234 |
|
static void |
235 |
|
putrays(void) |
236 |
|
{ |
237 |
< |
static RREAL loc[2]; |
238 |
< |
static FVECT rorg, rdir; |
237 |
> |
RREAL loc[2]; |
238 |
> |
FVECT rorg, rdir; |
239 |
|
float *zbuf = NULL; |
240 |
|
int sc; |
241 |
|
double d; |
242 |
< |
register int si, i; |
242 |
> |
int si, i, c; |
243 |
|
|
244 |
|
if (zfd >= 0) { |
245 |
|
zbuf = (float *)malloc(scanlen(&rs)*sizeof(float)); |
258 |
|
} |
259 |
|
} |
260 |
|
for (si = 0; si < scanlen(&rs); si++) { |
261 |
+ |
for (c = repeatcnt; c-- > 0; ) { |
262 |
|
pix2loc(loc, &rs, si, sc); |
263 |
+ |
jitterloc(loc); |
264 |
|
d = viewray(rorg, rdir, &vw, loc[0], loc[1]); |
265 |
|
if (d < -FTINY) |
266 |
|
rorg[0] = rorg[1] = rorg[2] = |
274 |
|
rdir[0] *= d; rdir[1] *= d; rdir[2] *= d; |
275 |
|
} |
276 |
|
(*putr)(rorg, rdir); |
277 |
+ |
} |
278 |
|
} |
279 |
|
} |
280 |
|
if (zfd >= 0) |