| 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 '-i' option indicates that |
| 23 |
> |
* radiance is computed. The '-oi' or '-oI' options indicate that |
| 24 |
|
* irradiance values are desired. |
| 25 |
|
*/ |
| 26 |
|
|
| 27 |
|
#include "ray.h" |
| 28 |
|
|
| 29 |
+ |
#include "octree.h" |
| 30 |
+ |
|
| 31 |
|
#include "otypes.h" |
| 32 |
|
|
| 33 |
|
int inform = 'a'; /* input format */ |
| 55 |
|
|
| 56 |
|
static RAY thisray; /* for our convenience */ |
| 57 |
|
|
| 58 |
< |
extern int oputo(), oputd(), oputv(), oputl(), |
| 58 |
> |
static int oputo(), oputd(), oputv(), oputl(), |
| 59 |
|
oputp(), oputn(), oputs(), oputw(), oputm(); |
| 60 |
|
|
| 61 |
|
static int (*ray_out[10])(), (*every_out[10])(); |
| 62 |
+ |
static int castonly; |
| 63 |
|
|
| 64 |
< |
extern int puta(), putf(), putd(); |
| 64 |
> |
static int puta(), putf(), putd(); |
| 65 |
|
|
| 66 |
|
static int (*putreal)(); |
| 67 |
|
|
| 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 */ |
| 73 |
|
|
| 74 |
+ |
|
| 75 |
|
quit(code) /* quit program */ |
| 76 |
|
int code; |
| 77 |
|
{ |
| 111 |
|
/* compute and print */ |
| 112 |
|
if (outvals[0] == 'i') |
| 113 |
|
irrad(orig, direc); |
| 114 |
+ |
else if (outvals[0] == 'I') |
| 115 |
+ |
Irrad(orig, direc); |
| 116 |
|
else |
| 117 |
|
radiance(orig, direc); |
| 118 |
|
/* flush if time */ |
| 137 |
|
extern int ourtrace(), (*trace)(); |
| 138 |
|
register int (**table)() = ray_out; |
| 139 |
|
|
| 140 |
+ |
castonly = 1; |
| 141 |
|
while (*vs) |
| 142 |
|
switch (*vs++) { |
| 143 |
|
case 't': /* trace */ |
| 144 |
|
*table = NULL; |
| 145 |
|
table = every_out; |
| 146 |
|
trace = ourtrace; |
| 147 |
+ |
castonly = 0; |
| 148 |
|
break; |
| 149 |
|
case 'o': /* origin */ |
| 150 |
|
*table++ = oputo; |
| 154 |
|
break; |
| 155 |
|
case 'v': /* value */ |
| 156 |
|
*table++ = oputv; |
| 157 |
+ |
castonly = 0; |
| 158 |
|
break; |
| 159 |
|
case 'l': /* length */ |
| 160 |
|
*table++ = oputl; |
| 161 |
+ |
castonly = 0; |
| 162 |
|
break; |
| 163 |
|
case 'p': /* point */ |
| 164 |
|
*table++ = oputp; |
| 188 |
|
VCOPY(thisray.rorg, org); |
| 189 |
|
VCOPY(thisray.rdir, dir); |
| 190 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
| 191 |
< |
rayvalue(&thisray); |
| 191 |
> |
if (castonly) |
| 192 |
> |
localhit(&thisray, &thescene) || sourcehit(&thisray); |
| 193 |
> |
else |
| 194 |
> |
rayvalue(&thisray); |
| 195 |
|
|
| 196 |
|
if (ray_out[0] == NULL) |
| 197 |
|
return; |
| 205 |
|
irrad(org, dir) /* compute irradiance value */ |
| 206 |
|
FVECT org, dir; |
| 207 |
|
{ |
| 190 |
– |
static double Lambfa[5] = {PI, PI, PI, 0.0, 0.0}; |
| 191 |
– |
static OBJREC Lamb = { |
| 192 |
– |
OVOID, MAT_PLASTIC, "Lambertian", |
| 193 |
– |
{0, 5, NULL, Lambfa}, NULL, -1, |
| 194 |
– |
}; |
| 208 |
|
register int i; |
| 209 |
|
|
| 210 |
|
for (i = 0; i < 3; i++) { |
| 220 |
|
thisray.rop[i] = org[i] + 1e-4*dir[i]; |
| 221 |
|
/* compute and print */ |
| 222 |
|
(*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); |
| 239 |
|
oputv(&thisray); |
| 240 |
|
if (outform == 'a') |
| 241 |
|
putchar('\n'); |
