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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. |
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* 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 |
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* numbers. Binary representations can be selected |
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* with '-ff' for float or '-fd' for double. By default, |
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* radiance is computed. The '-i' option indicates that |
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> |
* 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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|
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#include "ray.h" |
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|
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+ |
#include "octree.h" |
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|
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#include "otypes.h" |
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|
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+ |
int dimlist[MAXDIM]; /* sampling dimensions */ |
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+ |
int ndims = 0; /* number of sampling dimensions */ |
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+ |
int samplendx = 0; /* index for this sample */ |
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+ |
|
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int imm_irrad = 0; /* compute immediate irradiance? */ |
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|
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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 */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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int directrelay = 1; /* number of source relays */ |
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int vspretest = 512; /* virtual source pretest density */ |
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int directinvis = 0; /* sources invisible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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|
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double specthresh = .15; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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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 */ |
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int ambres = 128; /* ambient resolution */ |
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> |
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 */ |
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|
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+ |
extern OBJREC Lamb; /* a Lambertian surface */ |
70 |
+ |
|
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static RAY thisray; /* for our convenience */ |
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|
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< |
extern int oputo(), oputd(), oputv(), oputl(), |
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> |
static int oputo(), oputd(), oputv(), oputl(), oputL(), |
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oputp(), oputn(), oputs(), oputw(), oputm(); |
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|
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static int (*ray_out[10])(), (*every_out[10])(); |
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+ |
static int castonly; |
78 |
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|
79 |
< |
extern int puta(), putf(), putd(); |
79 |
> |
static int puta(), putf(), putd(); |
80 |
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|
81 |
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static int (*putreal)(); |
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|
113 |
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while (getvec(orig, inform, fp) == 0 && |
114 |
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getvec(direc, inform, fp) == 0) { |
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|
116 |
< |
if (normalize(direc) == 0.0) |
117 |
< |
error(USER, "zero direction vector"); |
116 |
> |
if (normalize(direc) == 0.0) { /* zero ==> flush */ |
117 |
> |
fflush(stdout); |
118 |
> |
continue; |
119 |
> |
} |
120 |
> |
samplendx++; |
121 |
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/* compute and print */ |
122 |
< |
if (outvals[0] == 'i') |
122 |
> |
if (imm_irrad) |
123 |
|
irrad(orig, direc); |
124 |
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else |
125 |
< |
radiance(orig, direc); |
126 |
< |
/* flush if requested */ |
125 |
> |
traceray(orig, direc); |
126 |
> |
/* flush if time */ |
127 |
|
if (--nextflush == 0) { |
128 |
|
fflush(stdout); |
129 |
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nextflush = hresolu; |
145 |
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extern int ourtrace(), (*trace)(); |
146 |
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register int (**table)() = ray_out; |
147 |
|
|
148 |
+ |
castonly = 1; |
149 |
|
while (*vs) |
150 |
|
switch (*vs++) { |
151 |
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case 't': /* trace */ |
152 |
|
*table = NULL; |
153 |
|
table = every_out; |
154 |
|
trace = ourtrace; |
155 |
+ |
castonly = 0; |
156 |
|
break; |
157 |
|
case 'o': /* origin */ |
158 |
|
*table++ = oputo; |
162 |
|
break; |
163 |
|
case 'v': /* value */ |
164 |
|
*table++ = oputv; |
165 |
+ |
castonly = 0; |
166 |
|
break; |
167 |
< |
case 'l': /* length */ |
167 |
> |
case 'l': /* effective distance */ |
168 |
|
*table++ = oputl; |
169 |
+ |
castonly = 0; |
170 |
|
break; |
171 |
+ |
case 'L': /* single ray length */ |
172 |
+ |
*table++ = oputL; |
173 |
+ |
break; |
174 |
|
case 'p': /* point */ |
175 |
|
*table++ = oputp; |
176 |
|
break; |
191 |
|
} |
192 |
|
|
193 |
|
|
194 |
< |
radiance(org, dir) /* compute radiance value */ |
194 |
> |
traceray(org, dir) /* compute and print ray value(s) */ |
195 |
|
FVECT org, dir; |
196 |
|
{ |
197 |
|
register int (**tp)(); |
199 |
|
VCOPY(thisray.rorg, org); |
200 |
|
VCOPY(thisray.rdir, dir); |
201 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
202 |
< |
rayvalue(&thisray); |
202 |
> |
if (castonly) |
203 |
> |
localhit(&thisray, &thescene) || sourcehit(&thisray); |
204 |
> |
else |
205 |
> |
rayvalue(&thisray); |
206 |
|
|
207 |
|
if (ray_out[0] == NULL) |
208 |
|
return; |
213 |
|
} |
214 |
|
|
215 |
|
|
216 |
< |
irrad(org, dir) /* compute irradiance value */ |
216 |
> |
irrad(org, dir) /* compute immediate irradiance value */ |
217 |
|
FVECT org, dir; |
218 |
|
{ |
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 |
– |
}; |
219 |
|
register int i; |
220 |
|
|
221 |
|
for (i = 0; i < 3; i++) { |
242 |
|
int fmt; |
243 |
|
FILE *fp; |
244 |
|
{ |
245 |
+ |
extern char *fgetword(); |
246 |
|
static float vf[3]; |
247 |
+ |
static double vd[3]; |
248 |
+ |
char buf[32]; |
249 |
+ |
register int i; |
250 |
|
|
251 |
|
switch (fmt) { |
252 |
|
case 'a': /* ascii */ |
253 |
< |
if (fscanf(fp, "%lf %lf %lf", vec, vec+1, vec+2) != 3) |
254 |
< |
return(-1); |
253 |
> |
for (i = 0; i < 3; i++) { |
254 |
> |
if (fgetword(buf, sizeof(buf), fp) == NULL || |
255 |
> |
!isflt(buf)) |
256 |
> |
return(-1); |
257 |
> |
vec[i] = atof(buf); |
258 |
> |
} |
259 |
|
break; |
260 |
|
case 'f': /* binary float */ |
261 |
< |
if (fread(vf, sizeof(float), 3, fp) != 3) |
261 |
> |
if (fread((char *)vf, sizeof(float), 3, fp) != 3) |
262 |
|
return(-1); |
263 |
|
vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2]; |
264 |
|
break; |
265 |
|
case 'd': /* binary double */ |
266 |
< |
if (fread(vec, sizeof(double), 3, fp) != 3) |
266 |
> |
if (fread((char *)vd, sizeof(double), 3, fp) != 3) |
267 |
|
return(-1); |
268 |
+ |
vec[0] = vd[0]; vec[1] = vd[1]; vec[2] = vd[2]; |
269 |
|
break; |
270 |
|
} |
271 |
|
return(0); |
329 |
|
|
330 |
|
|
331 |
|
static |
332 |
< |
oputl(r) /* print length */ |
332 |
> |
oputl(r) /* print effective distance */ |
333 |
|
register RAY *r; |
334 |
|
{ |
335 |
< |
if (r->rot < FHUGE) |
298 |
< |
(*putreal)(r->rot); |
299 |
< |
else |
300 |
< |
(*putreal)(0.0); |
335 |
> |
(*putreal)(r->rt); |
336 |
|
} |
337 |
|
|
338 |
|
|
339 |
|
static |
340 |
+ |
oputL(r) /* print single ray length */ |
341 |
+ |
register RAY *r; |
342 |
+ |
{ |
343 |
+ |
(*putreal)(r->rot); |
344 |
+ |
} |
345 |
+ |
|
346 |
+ |
|
347 |
+ |
static |
348 |
|
oputp(r) /* print point */ |
349 |
|
register RAY *r; |
350 |
|
{ |
420 |
|
putd(v) /* print binary double */ |
421 |
|
double v; |
422 |
|
{ |
423 |
< |
fwrite(&v, sizeof(v), 1, stdout); |
423 |
> |
fwrite((char *)&v, sizeof(v), 1, stdout); |
424 |
|
} |
425 |
|
|
426 |
|
|
430 |
|
{ |
431 |
|
float f = v; |
432 |
|
|
433 |
< |
fwrite(&f, sizeof(f), 1, stdout); |
433 |
> |
fwrite((char *)&f, sizeof(f), 1, stdout); |
434 |
|
} |