20 |
|
* All values default to ascii representation of real |
21 |
|
* numbers. Binary representations can be selected |
22 |
|
* with '-ff' for float or '-fd' for double. By default, |
23 |
< |
* radiance is computed. The '-oi' or '-oI' options indicate that |
23 |
> |
* radiance is computed. The '-i' or '-I' options indicate that |
24 |
|
* irradiance values are desired. |
25 |
|
*/ |
26 |
|
|
30 |
|
|
31 |
|
#include "otypes.h" |
32 |
|
|
33 |
+ |
int imm_irrad = 0; /* compute immediate irradiance? */ |
34 |
+ |
|
35 |
|
int inform = 'a'; /* input format */ |
36 |
|
int outform = 'a'; /* output format */ |
37 |
|
char *outvals = "v"; /* output specification */ |
55 |
|
char *amblist[128]; /* ambient include/exclude list */ |
56 |
|
int ambincl = -1; /* include == 1, exclude == 0 */ |
57 |
|
|
58 |
+ |
extern OBJREC Lamb; /* a Lambertian surface */ |
59 |
+ |
|
60 |
|
static RAY thisray; /* for our convenience */ |
61 |
|
|
62 |
|
static int oputo(), oputd(), oputv(), oputl(), |
69 |
|
|
70 |
|
static int (*putreal)(); |
71 |
|
|
68 |
– |
static double Lambfa[5] = {PI, PI, PI, 0.0, 0.0}; |
69 |
– |
static OBJREC Lamb = { |
70 |
– |
OVOID, MAT_PLASTIC, "Lambertian", |
71 |
– |
{0, 5, NULL, Lambfa}, NULL, -1, |
72 |
– |
}; /* a Lambertian surface */ |
72 |
|
|
74 |
– |
|
73 |
|
quit(code) /* quit program */ |
74 |
|
int code; |
75 |
|
{ |
107 |
|
continue; |
108 |
|
} |
109 |
|
/* compute and print */ |
110 |
< |
if (outvals[0] == 'i') |
110 |
> |
if (imm_irrad) |
111 |
|
irrad(orig, direc); |
114 |
– |
else if (outvals[0] == 'I') |
115 |
– |
Irrad(orig, direc); |
112 |
|
else |
113 |
< |
radiance(orig, direc); |
113 |
> |
traceray(orig, direc); |
114 |
|
/* flush if time */ |
115 |
|
if (--nextflush == 0) { |
116 |
|
fflush(stdout); |
176 |
|
} |
177 |
|
|
178 |
|
|
179 |
< |
radiance(org, dir) /* compute radiance value */ |
179 |
> |
traceray(org, dir) /* compute and print ray value(s) */ |
180 |
|
FVECT org, dir; |
181 |
|
{ |
182 |
|
register int (**tp)(); |
198 |
|
} |
199 |
|
|
200 |
|
|
201 |
< |
irrad(org, dir) /* compute irradiance value */ |
201 |
> |
irrad(org, dir) /* compute immediate irradiance value */ |
202 |
|
FVECT org, dir; |
203 |
|
{ |
204 |
|
register int i; |
216 |
|
thisray.rop[i] = org[i] + 1e-4*dir[i]; |
217 |
|
/* compute and print */ |
218 |
|
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
223 |
– |
oputv(&thisray); |
224 |
– |
if (outform == 'a') |
225 |
– |
putchar('\n'); |
226 |
– |
} |
227 |
– |
|
228 |
– |
|
229 |
– |
Irrad(org, dir) /* compute irradiance value after intersection */ |
230 |
– |
FVECT org, dir; |
231 |
– |
{ |
232 |
– |
/* compute intersection */ |
233 |
– |
VCOPY(thisray.rorg, org); |
234 |
– |
VCOPY(thisray.rdir, dir); |
235 |
– |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
236 |
– |
localhit(&thisray, &thescene); |
237 |
– |
if (thisray.ro != NULL) /* pretend we hit Lambertian surf. */ |
238 |
– |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
219 |
|
oputv(&thisray); |
220 |
|
if (outform == 'a') |
221 |
|
putchar('\n'); |