5 |
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* Compute rays corresponding to a given picture or view. |
6 |
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*/ |
7 |
|
|
8 |
< |
|
8 |
> |
#include "platform.h" |
9 |
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#include "standard.h" |
10 |
– |
|
10 |
|
#include "view.h" |
11 |
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|
12 |
< |
extern int putf(), putd(), puta(); |
12 |
> |
typedef void putfunc(FVECT ro, FVECT rd); |
13 |
> |
static putfunc puta; |
14 |
> |
static putfunc putf; |
15 |
> |
static putfunc putd; |
16 |
> |
static void pix2rays(FILE *fp); |
17 |
> |
static void putrays(void); |
18 |
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|
19 |
< |
int (*putr)() = puta; |
19 |
> |
static putfunc *putr = puta; |
20 |
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|
21 |
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VIEW vw = STDVIEW; |
22 |
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|
31 |
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char *progname; |
32 |
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|
33 |
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|
34 |
< |
main(argc, argv) |
35 |
< |
int argc; |
36 |
< |
char *argv[]; |
34 |
> |
int |
35 |
> |
main( |
36 |
> |
int argc, |
37 |
> |
char *argv[] |
38 |
> |
) |
39 |
|
{ |
40 |
|
char *err; |
41 |
|
int rval, getdim = 0; |
105 |
|
default: |
106 |
|
goto userr; |
107 |
|
} |
108 |
< |
if (i > argc | i+2 < argc) |
108 |
> |
if ((i > argc) | (i+2 < argc)) |
109 |
|
goto userr; |
110 |
|
if (i < argc) { |
111 |
|
rval = viewfile(argv[i], &vw, &rs); |
147 |
|
} |
148 |
|
|
149 |
|
|
150 |
< |
pix2rays(FILE *fp) |
150 |
> |
static void |
151 |
> |
pix2rays( |
152 |
> |
FILE *fp |
153 |
> |
) |
154 |
|
{ |
155 |
|
static FVECT rorg, rdir; |
156 |
|
float zval; |
160 |
|
register int i; |
161 |
|
|
162 |
|
while (fscanf(fp, "%lf %lf", &px, &py) == 2) { |
163 |
+ |
px += .5; py += .5; |
164 |
|
if (px < 0 || px >= rs.xr || |
165 |
|
py < 0 || py >= rs.yr) { |
166 |
|
fprintf(stderr, |
171 |
|
if (zfd >= 0) { |
172 |
|
loc2pix(pp, &rs, px/rs.xr, py/rs.yr); |
173 |
|
if (lseek(zfd, |
174 |
< |
(pp[1]*scanlen(&rs)+pp[0])*sizeof(float), 0) |
175 |
< |
< 0 || |
174 |
> |
(pp[1]*scanlen(&rs)+pp[0])*sizeof(float), |
175 |
> |
SEEK_SET) < 0 || |
176 |
|
read(zfd, &zval, sizeof(float)) |
177 |
< |
< sizeof(float)) { |
177 |
> |
< sizeof(float)) { |
178 |
|
fprintf(stderr, "%s: depth buffer read error\n", |
179 |
|
progname); |
180 |
|
exit(1); |
201 |
|
} |
202 |
|
|
203 |
|
|
204 |
< |
putrays() |
204 |
> |
static void |
205 |
> |
putrays(void) |
206 |
|
{ |
207 |
|
static RREAL loc[2]; |
208 |
|
static FVECT rorg, rdir; |
209 |
< |
float *zbuf; |
209 |
> |
float *zbuf = NULL; |
210 |
|
int sc; |
211 |
|
double d; |
212 |
|
register int si, i; |
249 |
|
} |
250 |
|
|
251 |
|
|
252 |
< |
puta(ro, rd) /* put out ray in ASCII format */ |
253 |
< |
FVECT ro, rd; |
252 |
> |
static void |
253 |
> |
puta( /* put out ray in ASCII format */ |
254 |
> |
FVECT ro, |
255 |
> |
FVECT rd |
256 |
> |
) |
257 |
|
{ |
258 |
|
printf("%.5e %.5e %.5e %.5e %.5e %.5e\n", |
259 |
|
ro[0], ro[1], ro[2], |
261 |
|
} |
262 |
|
|
263 |
|
|
264 |
< |
putf(ro, rd) /* put out ray in float format */ |
265 |
< |
FVECT ro, rd; |
264 |
> |
static void |
265 |
> |
putf( /* put out ray in float format */ |
266 |
> |
FVECT ro, |
267 |
> |
FVECT rd |
268 |
> |
) |
269 |
|
{ |
270 |
|
float v[6]; |
271 |
|
|
275 |
|
} |
276 |
|
|
277 |
|
|
278 |
< |
putd(ro, rd) /* put out ray in double format */ |
279 |
< |
FVECT ro, rd; |
278 |
> |
static void |
279 |
> |
putd( /* put out ray in double format */ |
280 |
> |
FVECT ro, |
281 |
> |
FVECT rd |
282 |
> |
) |
283 |
|
{ |
284 |
|
double v[6]; |
285 |
|
|