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* xorg yorg zorg xdir ydir zdir |
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* |
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* The direction need not be normalized. Output is flexible. |
19 |
+ |
* If the direction vector is (0,0,0), then the output is flushed. |
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* All values default to ascii representation of real |
21 |
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* numbers. Binary representations can be selected |
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* with '-ff' for float or '-fd' for double. By default, |
23 |
< |
* radiance is computed. The '-i' option indicates that |
23 |
> |
* radiance is computed. The '-i' or '-I' options indicate that |
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* irradiance values are desired. |
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*/ |
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|
27 |
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#include "ray.h" |
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|
|
29 |
+ |
#include "octree.h" |
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+ |
|
31 |
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#include "otypes.h" |
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|
33 |
+ |
int dimlist[MAXDIM]; /* sampling dimensions */ |
34 |
+ |
int ndims = 0; /* number of sampling dimensions */ |
35 |
+ |
int samplendx = 0; /* index for this sample */ |
36 |
+ |
|
37 |
+ |
int imm_irrad = 0; /* compute immediate irradiance? */ |
38 |
+ |
|
39 |
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int inform = 'a'; /* input format */ |
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int outform = 'a'; /* output format */ |
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char *outvals = "v"; /* output specification */ |
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int vresolu = 0; /* vertical resolution */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
47 |
+ |
double shadthresh = .05; /* shadow threshold */ |
48 |
+ |
double shadcert = .5; /* shadow certainty */ |
49 |
+ |
int directrelay = 0; /* number of source relays */ |
50 |
+ |
int vspretest = 512; /* virtual source pretest density */ |
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|
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 4e-3; /* minimum ray weight */ |
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|
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
57 |
< |
int ambres = 128; /* ambient resolution */ |
57 |
> |
int ambres = 32; /* ambient resolution */ |
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int ambdiv = 128; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
63 |
|
|
64 |
+ |
extern OBJREC Lamb; /* a Lambertian surface */ |
65 |
+ |
|
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|
static RAY thisray; /* for our convenience */ |
67 |
|
|
68 |
< |
extern int oputo(), oputd(), oputv(), oputl(), |
68 |
> |
static int oputo(), oputd(), oputv(), oputl(), |
69 |
|
oputp(), oputn(), oputs(), oputw(), oputm(); |
70 |
|
|
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static int (*ray_out[10])(), (*every_out[10])(); |
72 |
+ |
static int castonly; |
73 |
|
|
74 |
< |
extern int puta(), putf(), putd(); |
74 |
> |
static int puta(), putf(), putd(); |
75 |
|
|
76 |
|
static int (*putreal)(); |
77 |
|
|
108 |
|
while (getvec(orig, inform, fp) == 0 && |
109 |
|
getvec(direc, inform, fp) == 0) { |
110 |
|
|
111 |
< |
if (normalize(direc) == 0.0) |
112 |
< |
error(USER, "zero direction vector"); |
111 |
> |
if (normalize(direc) == 0.0) { /* zero ==> flush */ |
112 |
> |
fflush(stdout); |
113 |
> |
continue; |
114 |
> |
} |
115 |
> |
samplendx++; |
116 |
|
/* compute and print */ |
117 |
< |
if (outvals[0] == 'i') |
117 |
> |
if (imm_irrad) |
118 |
|
irrad(orig, direc); |
119 |
|
else |
120 |
< |
radiance(orig, direc); |
121 |
< |
/* flush if requested */ |
120 |
> |
traceray(orig, direc); |
121 |
> |
/* flush if time */ |
122 |
|
if (--nextflush == 0) { |
123 |
|
fflush(stdout); |
124 |
|
nextflush = hresolu; |
140 |
|
extern int ourtrace(), (*trace)(); |
141 |
|
register int (**table)() = ray_out; |
142 |
|
|
143 |
+ |
castonly = 1; |
144 |
|
while (*vs) |
145 |
|
switch (*vs++) { |
146 |
|
case 't': /* trace */ |
147 |
|
*table = NULL; |
148 |
|
table = every_out; |
149 |
|
trace = ourtrace; |
150 |
+ |
castonly = 0; |
151 |
|
break; |
152 |
|
case 'o': /* origin */ |
153 |
|
*table++ = oputo; |
157 |
|
break; |
158 |
|
case 'v': /* value */ |
159 |
|
*table++ = oputv; |
160 |
+ |
castonly = 0; |
161 |
|
break; |
162 |
|
case 'l': /* length */ |
163 |
|
*table++ = oputl; |
164 |
+ |
castonly = 0; |
165 |
|
break; |
166 |
|
case 'p': /* point */ |
167 |
|
*table++ = oputp; |
183 |
|
} |
184 |
|
|
185 |
|
|
186 |
< |
radiance(org, dir) /* compute radiance value */ |
186 |
> |
traceray(org, dir) /* compute and print ray value(s) */ |
187 |
|
FVECT org, dir; |
188 |
|
{ |
189 |
|
register int (**tp)(); |
191 |
|
VCOPY(thisray.rorg, org); |
192 |
|
VCOPY(thisray.rdir, dir); |
193 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
194 |
< |
rayvalue(&thisray); |
194 |
> |
if (castonly) |
195 |
> |
localhit(&thisray, &thescene) || sourcehit(&thisray); |
196 |
> |
else |
197 |
> |
rayvalue(&thisray); |
198 |
|
|
199 |
|
if (ray_out[0] == NULL) |
200 |
|
return; |
205 |
|
} |
206 |
|
|
207 |
|
|
208 |
< |
irrad(org, dir) /* compute irradiance value */ |
208 |
> |
irrad(org, dir) /* compute immediate irradiance value */ |
209 |
|
FVECT org, dir; |
210 |
|
{ |
185 |
– |
static double Lambfa[5] = {PI, PI, PI, 0.0, 0.0}; |
186 |
– |
static OBJREC Lamb = { |
187 |
– |
OVOID, MAT_PLASTIC, "Lambertian", |
188 |
– |
{0, 5, NULL, Lambfa}, NULL, -1, |
189 |
– |
}; |
211 |
|
register int i; |
212 |
|
|
213 |
|
for (i = 0; i < 3; i++) { |
242 |
|
return(-1); |
243 |
|
break; |
244 |
|
case 'f': /* binary float */ |
245 |
< |
if (fread(vf, sizeof(float), 3, fp) != 3) |
245 |
> |
if (fread((char *)vf, sizeof(float), 3, fp) != 3) |
246 |
|
return(-1); |
247 |
|
vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2]; |
248 |
|
break; |
249 |
|
case 'd': /* binary double */ |
250 |
< |
if (fread(vec, sizeof(double), 3, fp) != 3) |
250 |
> |
if (fread((char *)vec, sizeof(double), 3, fp) != 3) |
251 |
|
return(-1); |
252 |
|
break; |
253 |
|
} |
315 |
|
oputl(r) /* print length */ |
316 |
|
register RAY *r; |
317 |
|
{ |
318 |
< |
if (r->rot < FHUGE) |
298 |
< |
(*putreal)(r->rot); |
299 |
< |
else |
300 |
< |
(*putreal)(0.0); |
318 |
> |
(*putreal)(r->rt); |
319 |
|
} |
320 |
|
|
321 |
|
|
395 |
|
putd(v) /* print binary double */ |
396 |
|
double v; |
397 |
|
{ |
398 |
< |
fwrite(&v, sizeof(v), 1, stdout); |
398 |
> |
fwrite((char *)&v, sizeof(v), 1, stdout); |
399 |
|
} |
400 |
|
|
401 |
|
|
405 |
|
{ |
406 |
|
float f = v; |
407 |
|
|
408 |
< |
fwrite(&f, sizeof(f), 1, stdout); |
408 |
> |
fwrite((char *)&f, sizeof(f), 1, stdout); |
409 |
|
} |