| 11 |
|
|
| 12 |
|
#include "ray.h" |
| 13 |
|
|
| 14 |
– |
#include "source.h" |
| 15 |
– |
|
| 14 |
|
#include "otypes.h" |
| 15 |
|
|
| 16 |
< |
#include "cone.h" |
| 16 |
> |
#include "source.h" |
| 17 |
|
|
| 20 |
– |
#include "face.h" |
| 18 |
|
|
| 19 |
< |
extern int directrelay; /* maximum number of source relays */ |
| 19 |
> |
double intercircle(), getdisk(); |
| 20 |
|
|
| 24 |
– |
double getplaneq(); |
| 25 |
– |
double getmaxdisk(); |
| 26 |
– |
double intercircle(); |
| 27 |
– |
SRCREC *makevsrc(); |
| 28 |
– |
|
| 21 |
|
static OBJECT *vobject; /* virtual source objects */ |
| 22 |
|
static int nvobjects = 0; /* number of virtual source objects */ |
| 23 |
|
|
| 32 |
|
/* find virtual source objects */ |
| 33 |
|
for (i = 0; i < nobjects; i++) { |
| 34 |
|
o = objptr(i); |
| 35 |
< |
if (o->omod == OVOID) |
| 35 |
> |
if (!issurface(o->otype) || o->omod == OVOID) |
| 36 |
|
continue; |
| 37 |
|
if (!isvlight(objptr(o->omod)->otype)) |
| 38 |
|
continue; |
| 39 |
+ |
if (sfun[o->otype].of == NULL || |
| 40 |
+ |
sfun[o->otype].of->getpleq == NULL) |
| 41 |
+ |
objerror(o, USER, "illegal material"); |
| 42 |
|
if (nvobjects == 0) |
| 43 |
|
vobject = (OBJECT *)malloc(sizeof(OBJECT)); |
| 44 |
|
else |
| 50 |
|
} |
| 51 |
|
if (nvobjects == 0) |
| 52 |
|
return; |
| 53 |
+ |
#ifdef DEBUG |
| 54 |
+ |
fprintf(stderr, "found %d virtual source objects\n", nvobjects); |
| 55 |
+ |
#endif |
| 56 |
|
/* append virtual sources */ |
| 57 |
|
for (i = nsources; i-- > 0; ) |
| 58 |
|
if (!(source[i].sflags & SSKIP)) |
| 59 |
< |
addvirtuals(&source[i], directrelay); |
| 59 |
> |
addvirtuals(i, directrelay); |
| 60 |
|
/* done with our object list */ |
| 61 |
|
free((char *)vobject); |
| 62 |
|
nvobjects = 0; |
| 63 |
|
} |
| 64 |
|
|
| 65 |
|
|
| 66 |
< |
addvirtuals(sr, nr) /* add virtual sources associated with sr */ |
| 67 |
< |
SRCREC *sr; |
| 66 |
> |
addvirtuals(sn, nr) /* add virtuals associated with source */ |
| 67 |
> |
int sn; |
| 68 |
|
int nr; |
| 69 |
|
{ |
| 70 |
|
register int i; |
| 73 |
|
return; |
| 74 |
|
/* check each virtual object for projection */ |
| 75 |
|
for (i = 0; i < nvobjects; i++) |
| 76 |
< |
vproject(objptr(i), sr, nr-1); /* calls us recursively */ |
| 76 |
> |
/* vproject() calls us recursively */ |
| 77 |
> |
vproject(objptr(vobject[i]), sn, nr-1); |
| 78 |
|
} |
| 79 |
|
|
| 80 |
|
|
| 81 |
< |
SRCREC * |
| 82 |
< |
makevsrc(op, sp, pm) /* make virtual source if reasonable */ |
| 81 |
> |
vproject(o, sn, n) /* create projected source(s) if they exist */ |
| 82 |
> |
OBJREC *o; |
| 83 |
> |
int sn; |
| 84 |
> |
int n; |
| 85 |
> |
{ |
| 86 |
> |
register int i; |
| 87 |
> |
register VSMATERIAL *vsmat; |
| 88 |
> |
MAT4 proj; |
| 89 |
> |
int ns; |
| 90 |
> |
|
| 91 |
> |
if (o == source[sn].so) /* objects cannot project themselves */ |
| 92 |
> |
return; |
| 93 |
> |
/* get virtual source material */ |
| 94 |
> |
vsmat = sfun[objptr(o->omod)->otype].mf; |
| 95 |
> |
/* project virtual sources */ |
| 96 |
> |
for (i = 0; i < vsmat->nproj; i++) |
| 97 |
> |
if ((*vsmat->vproj)(proj, o, &source[sn], i)) |
| 98 |
> |
if ((ns = makevsrc(o, sn, proj)) >= 0) { |
| 99 |
> |
#ifdef DEBUG |
| 100 |
> |
virtverb(ns, stderr); |
| 101 |
> |
#endif |
| 102 |
> |
addvirtuals(ns, n); |
| 103 |
> |
} |
| 104 |
> |
} |
| 105 |
> |
|
| 106 |
> |
|
| 107 |
> |
int |
| 108 |
> |
makevsrc(op, sn, pm) /* make virtual source if reasonable */ |
| 109 |
|
OBJREC *op; |
| 110 |
< |
register SRCREC *sp; |
| 110 |
> |
register int sn; |
| 111 |
|
MAT4 pm; |
| 112 |
|
{ |
| 113 |
< |
register SRCREC *newsrc; |
| 89 |
< |
FVECT nsloc, ocent, nsnorm; |
| 113 |
> |
FVECT nsloc, nsnorm, ocent; |
| 114 |
|
double maxrad2; |
| 115 |
< |
double d1, d2; |
| 115 |
> |
int nsflags; |
| 116 |
> |
double d1; |
| 117 |
|
SPOT theirspot, ourspot; |
| 118 |
|
register int i; |
| 119 |
+ |
|
| 120 |
+ |
nsflags = source[sn].sflags | (SVIRTUAL|SSPOT|SFOLLOW); |
| 121 |
|
/* get object center and max. radius */ |
| 122 |
< |
maxrad2 = getmaxdisk(ocent, op); |
| 122 |
> |
maxrad2 = getdisk(ocent, op, sn); |
| 123 |
|
if (maxrad2 <= FTINY) /* too small? */ |
| 124 |
< |
return(NULL); |
| 124 |
> |
return(-1); |
| 125 |
|
/* get location and spot */ |
| 126 |
< |
if (sp->sflags & SDISTANT) { /* distant source */ |
| 127 |
< |
if (sp->sflags & SPROX) |
| 128 |
< |
return(NULL); /* should never get here! */ |
| 129 |
< |
multv3(nsloc, sp->sloc, pm); |
| 126 |
> |
if (source[sn].sflags & SDISTANT) { /* distant source */ |
| 127 |
> |
if (source[sn].sflags & SPROX) |
| 128 |
> |
return(-1); /* should never get here! */ |
| 129 |
> |
multv3(nsloc, source[sn].sloc, pm); |
| 130 |
|
VCOPY(ourspot.aim, ocent); |
| 131 |
|
ourspot.siz = PI*maxrad2; |
| 132 |
|
ourspot.flen = 0.; |
| 133 |
< |
if (sp->sflags & SSPOT) { |
| 134 |
< |
copystruct(&theirspot, sp->sl.s); |
| 135 |
< |
multp3(theirspot.aim, sp->sl.s->aim, pm); |
| 133 |
> |
if (source[sn].sflags & SSPOT) { |
| 134 |
> |
copystruct(&theirspot, source[sn].sl.s); |
| 135 |
> |
multp3(theirspot.aim, source[sn].sl.s->aim, pm); |
| 136 |
|
if (!commonbeam(&ourspot, &theirspot, nsloc)) |
| 137 |
< |
return(NULL); /* no overlap */ |
| 137 |
> |
return(-1); /* no overlap */ |
| 138 |
|
} |
| 139 |
|
} else { /* local source */ |
| 140 |
< |
multp3(nsloc, sp->sloc, pm); |
| 114 |
< |
if (sp->sflags & SPROX) { |
| 115 |
< |
d2 = 0.; |
| 116 |
< |
for (i = 0; i < 3; i++) { |
| 117 |
< |
d1 = ocent[i] - nsloc[i]; |
| 118 |
< |
d2 += d1*d1; |
| 119 |
< |
} |
| 120 |
< |
if (d2 > sp->sl.prox*sp->sl.prox) |
| 121 |
< |
return(NULL); /* too far away */ |
| 122 |
< |
} |
| 140 |
> |
multp3(nsloc, source[sn].sloc, pm); |
| 141 |
|
for (i = 0; i < 3; i++) |
| 142 |
|
ourspot.aim[i] = ocent[i] - nsloc[i]; |
| 143 |
|
if ((d1 = normalize(ourspot.aim)) == 0.) |
| 144 |
< |
return(NULL); /* at source!! */ |
| 144 |
> |
return(-1); /* at source!! */ |
| 145 |
> |
if (source[sn].sflags & SPROX && d1 > source[sn].sl.prox) |
| 146 |
> |
return(-1); /* too far away */ |
| 147 |
|
ourspot.siz = 2.*PI*(1. - d1/sqrt(d1*d1+maxrad2)); |
| 148 |
|
ourspot.flen = 0.; |
| 149 |
< |
if (sp->sflags & SSPOT) { |
| 150 |
< |
copystruct(&theirspot, sp->sl.s); |
| 151 |
< |
multv3(theirspot.aim, sp->sl.s->aim, pm); |
| 149 |
> |
if (source[sn].sflags & SSPOT) { |
| 150 |
> |
copystruct(&theirspot, source[sn].sl.s); |
| 151 |
> |
multv3(theirspot.aim, source[sn].sl.s->aim, pm); |
| 152 |
|
if (!commonspot(&ourspot, &theirspot, nsloc)) |
| 153 |
< |
return(NULL); /* no overlap */ |
| 153 |
> |
return(-1); /* no overlap */ |
| 154 |
|
ourspot.flen = theirspot.flen; |
| 155 |
|
} |
| 156 |
< |
if (sp->sflags & SFLAT) { /* check for behind source */ |
| 157 |
< |
multv3(nsnorm, sp->snorm, pm); |
| 156 |
> |
if (source[sn].sflags & SFLAT) { /* behind source? */ |
| 157 |
> |
multv3(nsnorm, source[sn].snorm, pm); |
| 158 |
|
if (checkspot(&ourspot, nsnorm) < 0) |
| 159 |
< |
return(NULL); |
| 159 |
> |
return(-1); |
| 160 |
|
} |
| 161 |
|
} |
| 162 |
|
/* everything is OK, make source */ |
| 163 |
< |
if ((newsrc = newsource()) == NULL) |
| 163 |
> |
if ((i = newsource()) < 0) |
| 164 |
|
goto memerr; |
| 165 |
< |
newsrc->sflags = sp->sflags | (SVIRTUAL|SSPOT|SFOLLOW); |
| 166 |
< |
VCOPY(newsrc->sloc, nsloc); |
| 167 |
< |
if (newsrc->sflags & SFLAT) |
| 168 |
< |
VCOPY(newsrc->snorm, nsnorm); |
| 169 |
< |
newsrc->ss = sp->ss; newsrc->ss2 = sp->ss2; |
| 170 |
< |
if ((newsrc->sl.s = (SPOT *)malloc(sizeof(SPOT))) == NULL) |
| 165 |
> |
source[i].sflags = nsflags; |
| 166 |
> |
VCOPY(source[i].sloc, nsloc); |
| 167 |
> |
if (nsflags & SFLAT) |
| 168 |
> |
VCOPY(source[i].snorm, nsnorm); |
| 169 |
> |
source[i].ss = source[sn].ss; source[i].ss2 = source[sn].ss2; |
| 170 |
> |
if ((source[i].sl.s = (SPOT *)malloc(sizeof(SPOT))) == NULL) |
| 171 |
|
goto memerr; |
| 172 |
< |
copystruct(newsrc->sl.s, &ourspot); |
| 173 |
< |
if (newsrc->sflags & SPROX) |
| 174 |
< |
newsrc->sl.prox = sp->sl.prox; |
| 175 |
< |
newsrc->sa.svnext = sp - source; |
| 176 |
< |
return(newsrc); |
| 172 |
> |
copystruct(source[i].sl.s, &ourspot); |
| 173 |
> |
if (nsflags & SPROX) |
| 174 |
> |
source[i].sl.prox = source[sn].sl.prox; |
| 175 |
> |
source[i].sa.svnext = sn; |
| 176 |
> |
source[i].so = op; |
| 177 |
> |
return(i); |
| 178 |
|
memerr: |
| 179 |
|
error(SYSTEM, "out of memory in makevsrc"); |
| 180 |
|
} |
| 181 |
|
|
| 182 |
|
|
| 183 |
+ |
double |
| 184 |
+ |
getdisk(oc, op, sn) /* get visible object disk */ |
| 185 |
+ |
FVECT oc; |
| 186 |
+ |
OBJREC *op; |
| 187 |
+ |
register int sn; |
| 188 |
+ |
{ |
| 189 |
+ |
double rad2, roffs, offs, d, rd, rdoto; |
| 190 |
+ |
FVECT rnrm, nrm; |
| 191 |
+ |
/* first, use object getdisk function */ |
| 192 |
+ |
rad2 = (*sfun[op->otype].of->getdisk)(oc, op); |
| 193 |
+ |
if (!(source[sn].sflags & SVIRTUAL)) |
| 194 |
+ |
return(rad2); /* all done for normal source */ |
| 195 |
+ |
/* check for correct side of relay surface */ |
| 196 |
+ |
roffs = (*sfun[source[sn].so->otype].of->getpleq)(rnrm, source[sn].so); |
| 197 |
+ |
rd = DOT(rnrm, source[sn].sloc); /* source projection */ |
| 198 |
+ |
if (!(source[sn].sflags & SDISTANT)) |
| 199 |
+ |
rd -= roffs; |
| 200 |
+ |
d = DOT(rnrm, oc) - roffs; /* disk distance to relay plane */ |
| 201 |
+ |
if ((d > 0.) ^ (rd > 0.)) |
| 202 |
+ |
return(rad2); /* OK if opposite sides */ |
| 203 |
+ |
if (d*d >= rad2) |
| 204 |
+ |
return(.0); /* no relay is possible */ |
| 205 |
+ |
/* we need a closer look */ |
| 206 |
+ |
offs = (*sfun[op->otype].of->getpleq)(nrm, op); |
| 207 |
+ |
rdoto = DOT(rnrm, nrm); |
| 208 |
+ |
if (d*d >= rad2*(1.-rdoto*rdoto)) |
| 209 |
+ |
return(0.); /* disk entirely on projection side */ |
| 210 |
+ |
/* should shrink disk but I'm lazy */ |
| 211 |
+ |
return(rad2); |
| 212 |
+ |
} |
| 213 |
+ |
|
| 214 |
+ |
|
| 215 |
|
commonspot(sp1, sp2, org) /* set sp1 to intersection of sp1 and sp2 */ |
| 216 |
|
register SPOT *sp1, *sp2; |
| 217 |
|
FVECT org; |
| 218 |
|
{ |
| 219 |
|
FVECT cent; |
| 220 |
< |
double rad2, d1r2, d2r2; |
| 220 |
> |
double rad2, cos1, cos2; |
| 221 |
|
|
| 222 |
< |
d1r2 = 1. - sp1->siz/(2.*PI); |
| 223 |
< |
d2r2 = 1. - sp2->siz/(2.*PI); |
| 222 |
> |
cos1 = 1. - sp1->siz/(2.*PI); |
| 223 |
> |
cos2 = 1. - sp2->siz/(2.*PI); |
| 224 |
|
if (sp2->siz >= 2.*PI-FTINY) /* BIG, just check overlap */ |
| 225 |
< |
return(DOT(sp1->aim,sp2->aim) >= d1r2*d2r2 - |
| 226 |
< |
sqrt((1.-d1r2*d1r2)*(1.-d2r2*d2r2))); |
| 225 |
> |
return(DOT(sp1->aim,sp2->aim) >= cos1*cos2 - |
| 226 |
> |
sqrt((1.-cos1*cos1)*(1.-cos2*cos2))); |
| 227 |
|
/* compute and check disks */ |
| 228 |
< |
d1r2 = 1./(d1r2*d1r2) - 1.; |
| 229 |
< |
d2r2 = 1./(d2r2*d2r2) - 1.; |
| 177 |
< |
rad2 = intercircle(cent, sp1->aim, sp2->aim, d1r2, d2r2); |
| 228 |
> |
rad2 = intercircle(cent, sp1->aim, sp2->aim, |
| 229 |
> |
1./(cos1*cos1) - 1., 1./(cos2*cos2) - 1.); |
| 230 |
|
if (rad2 <= FTINY || normalize(cent) == 0.) |
| 231 |
|
return(0); |
| 232 |
|
VCOPY(sp1->aim, cent); |
| 245 |
|
/* move centers to common plane */ |
| 246 |
|
d = DOT(sp1->aim, dir); |
| 247 |
|
for (i = 0; i < 3; i++) |
| 248 |
< |
c1[i] = sp2->aim[i] - d*dir[i]; |
| 248 |
> |
c1[i] = sp1->aim[i] - d*dir[i]; |
| 249 |
|
d = DOT(sp2->aim, dir); |
| 250 |
|
for (i = 0; i < 3; i++) |
| 251 |
|
c2[i] = sp2->aim[i] - d*dir[i]; |
| 274 |
|
} |
| 275 |
|
|
| 276 |
|
|
| 225 |
– |
mirrorproj(m, nv, offs) /* get mirror projection for surface */ |
| 226 |
– |
register MAT4 m; |
| 227 |
– |
FVECT nv; |
| 228 |
– |
double offs; |
| 229 |
– |
{ |
| 230 |
– |
register int i, j; |
| 231 |
– |
/* assign matrix */ |
| 232 |
– |
setident4(m); |
| 233 |
– |
for (i = 0; i < 3; i++) |
| 234 |
– |
for (j = 0; j < 3; j++) |
| 235 |
– |
m[i][j] -= 2.*nv[i]*nv[j]; |
| 236 |
– |
for (j = 0; j < 3; j++) |
| 237 |
– |
m[3][j] = 2.*offs*nv[j]; |
| 238 |
– |
} |
| 239 |
– |
|
| 240 |
– |
|
| 277 |
|
double |
| 278 |
|
intercircle(cc, c1, c2, r1s, r2s) /* intersect two circles */ |
| 279 |
|
FVECT cc; /* midpoint (return value) */ |
| 303 |
|
/* no overlap? */ |
| 304 |
|
if (a2 <= 0.) |
| 305 |
|
return(0.); |
| 306 |
+ |
/* overlap, compute center */ |
| 307 |
|
l = sqrt((r1s - a2)/d2); |
| 308 |
|
for (i = 0; i < 3; i++) |
| 309 |
|
cc[i] = c1[i] + l*disp[i]; |
| 311 |
|
} |
| 312 |
|
|
| 313 |
|
|
| 277 |
– |
/* |
| 278 |
– |
* The following routines depend on the supported OBJECTS: |
| 279 |
– |
*/ |
| 280 |
– |
|
| 281 |
– |
|
| 282 |
– |
double |
| 283 |
– |
getmaxdisk(ocent, op) /* get object center and squared radius */ |
| 284 |
– |
FVECT ocent; |
| 285 |
– |
register OBJREC *op; |
| 286 |
– |
{ |
| 287 |
– |
double maxrad2; |
| 288 |
– |
|
| 289 |
– |
switch (op->otype) { |
| 290 |
– |
case OBJ_FACE: |
| 291 |
– |
{ |
| 292 |
– |
double d1, d2; |
| 293 |
– |
register int i, j; |
| 294 |
– |
register FACE *f = getface(op); |
| 295 |
– |
|
| 296 |
– |
for (i = 0; i < 3; i++) { |
| 297 |
– |
ocent[i] = 0.; |
| 298 |
– |
for (j = 0; j < f->nv; j++) |
| 299 |
– |
ocent[i] += VERTEX(f,j)[i]; |
| 300 |
– |
ocent[i] /= (double)f->nv; |
| 301 |
– |
} |
| 302 |
– |
maxrad2 = 0.; |
| 303 |
– |
for (j = 0; j < f->nv; j++) { |
| 304 |
– |
d2 = 0.; |
| 305 |
– |
for (i = 0; i < 3; i++) { |
| 306 |
– |
d1 = VERTEX(f,j)[i] - ocent[i]; |
| 307 |
– |
d2 += d1*d1; |
| 308 |
– |
} |
| 309 |
– |
if (d2 > maxrad2) |
| 310 |
– |
maxrad2 = d2; |
| 311 |
– |
} |
| 312 |
– |
} |
| 313 |
– |
return(maxrad2); |
| 314 |
– |
case OBJ_RING: |
| 315 |
– |
{ |
| 316 |
– |
register CONE *co = getcone(op, 0); |
| 317 |
– |
|
| 318 |
– |
VCOPY(ocent, CO_P0(co)); |
| 319 |
– |
maxrad2 = CO_R1(co); |
| 320 |
– |
maxrad2 *= maxrad2; |
| 321 |
– |
} |
| 322 |
– |
return(maxrad2); |
| 323 |
– |
} |
| 324 |
– |
objerror(op, USER, "illegal material"); |
| 325 |
– |
} |
| 326 |
– |
|
| 327 |
– |
|
| 328 |
– |
double |
| 329 |
– |
getplaneq(nvec, op) /* get plane equation for object */ |
| 330 |
– |
FVECT nvec; |
| 331 |
– |
OBJREC *op; |
| 332 |
– |
{ |
| 333 |
– |
register FACE *fo; |
| 334 |
– |
register CONE *co; |
| 335 |
– |
|
| 336 |
– |
switch (op->otype) { |
| 337 |
– |
case OBJ_FACE: |
| 338 |
– |
fo = getface(op); |
| 339 |
– |
VCOPY(nvec, fo->norm); |
| 340 |
– |
return(fo->offset); |
| 341 |
– |
case OBJ_RING: |
| 342 |
– |
co = getcone(op, 0); |
| 343 |
– |
VCOPY(nvec, co->ad); |
| 344 |
– |
return(DOT(nvec, CO_P0(co))); |
| 345 |
– |
} |
| 346 |
– |
objerror(op, USER, "illegal material"); |
| 347 |
– |
} |
| 348 |
– |
|
| 349 |
– |
|
| 350 |
– |
/* |
| 351 |
– |
* The following routines depend on the supported MATERIALS: |
| 352 |
– |
*/ |
| 353 |
– |
|
| 354 |
– |
|
| 355 |
– |
vproject(o, s, n) /* create projected source(s) if they exist */ |
| 356 |
– |
OBJREC *o; |
| 357 |
– |
SRCREC *s; |
| 358 |
– |
int n; |
| 359 |
– |
{ |
| 360 |
– |
SRCREC *ns; |
| 361 |
– |
FVECT norm; |
| 362 |
– |
double offset; |
| 363 |
– |
MAT4 proj; |
| 364 |
– |
/* get surface normal and offset */ |
| 365 |
– |
offset = getplaneq(norm, o); |
| 366 |
– |
switch (objptr(o->omod)->otype) { |
| 367 |
– |
case MAT_MIRROR: /* mirror source */ |
| 368 |
– |
if (DOT(s->sloc, norm) <= (s->sflags & SDISTANT ? |
| 369 |
– |
FTINY : offset+FTINY)) |
| 370 |
– |
return; /* behind mirror */ |
| 371 |
– |
mirrorproj(proj, norm, offset); |
| 372 |
– |
if ((ns = makevsrc(o, s, proj)) != NULL) |
| 373 |
– |
addvirtuals(ns, n); |
| 374 |
– |
break; |
| 375 |
– |
} |
| 376 |
– |
} |
| 377 |
– |
|
| 378 |
– |
|
| 379 |
– |
vsrcrelay(rn, rv) /* relay virtual source ray */ |
| 380 |
– |
register RAY *rn, *rv; |
| 381 |
– |
{ |
| 382 |
– |
int snext; |
| 383 |
– |
register int i; |
| 384 |
– |
/* source we're aiming for here */ |
| 385 |
– |
snext = source[rv->rsrc].sa.svnext; |
| 386 |
– |
/* compute relayed ray direction */ |
| 387 |
– |
switch (objptr(rv->ro->omod)->otype) { |
| 388 |
– |
case MAT_MIRROR: /* mirror: singular reflection */ |
| 389 |
– |
rayorigin(rn, rv, REFLECTED, 1.); |
| 390 |
– |
/* ignore textures */ |
| 391 |
– |
for (i = 0; i < 3; i++) |
| 392 |
– |
rn->rdir[i] = rv->rdir[i] + 2.*rv->rod*rv->ron[i]; |
| 393 |
– |
break; |
| 314 |
|
#ifdef DEBUG |
| 315 |
< |
default: |
| 316 |
< |
error(CONSISTENCY, "inappropriate material in vsrcrelay"); |
| 317 |
< |
#endif |
| 398 |
< |
} |
| 399 |
< |
rn->rsrc = snext; |
| 400 |
< |
} |
| 401 |
< |
|
| 402 |
< |
|
| 403 |
< |
m_mirror(m, r) /* shade mirrored ray */ |
| 404 |
< |
register OBJREC *m; |
| 405 |
< |
register RAY *r; |
| 315 |
> |
virtverb(sn, fp) /* print verbose description of virtual source */ |
| 316 |
> |
register int sn; |
| 317 |
> |
FILE *fp; |
| 318 |
|
{ |
| 407 |
– |
COLOR mcolor; |
| 408 |
– |
RAY nr; |
| 319 |
|
register int i; |
| 320 |
|
|
| 321 |
< |
if (m->oargs.nfargs != 3 || m->oargs.nsargs > 1) |
| 322 |
< |
objerror(m, USER, "bad number of arguments"); |
| 323 |
< |
if (r->rsrc >= 0) { /* aiming for somebody */ |
| 324 |
< |
if (source[r->rsrc].so != r->ro) |
| 325 |
< |
return; /* but not us */ |
| 326 |
< |
} else if (m->oargs.nsargs > 0) { /* else call substitute? */ |
| 327 |
< |
rayshade(r, modifier(m->oargs.sarg[0])); |
| 321 |
> |
fprintf(fp, "%s virtual source %d in %s %s\n", |
| 322 |
> |
source[sn].sflags & SDISTANT ? "distant" : "local", |
| 323 |
> |
sn, ofun[source[sn].so->otype].funame, |
| 324 |
> |
source[sn].so->oname); |
| 325 |
> |
fprintf(fp, "\tat (%f,%f,%f)\n", |
| 326 |
> |
source[sn].sloc[0], source[sn].sloc[1], source[sn].sloc[2]); |
| 327 |
> |
fprintf(fp, "\tlinked to source %d (%s)\n", |
| 328 |
> |
source[sn].sa.svnext, source[source[sn].sa.svnext].so->oname); |
| 329 |
> |
if (source[sn].sflags & SFOLLOW) |
| 330 |
> |
fprintf(fp, "\talways followed\n"); |
| 331 |
> |
else |
| 332 |
> |
fprintf(fp, "\tnever followed\n"); |
| 333 |
> |
if (!(source[sn].sflags & SSPOT)) |
| 334 |
|
return; |
| 335 |
< |
} |
| 336 |
< |
if (r->rod < 0.) /* back is black */ |
| 337 |
< |
return; |
| 422 |
< |
/* get modifiers */ |
| 423 |
< |
raytexture(r, m->omod); |
| 424 |
< |
/* assign material color */ |
| 425 |
< |
setcolor(mcolor, m->oargs.farg[0], |
| 426 |
< |
m->oargs.farg[1], |
| 427 |
< |
m->oargs.farg[2]); |
| 428 |
< |
multcolor(mcolor, r->pcol); |
| 429 |
< |
/* compute reflected ray */ |
| 430 |
< |
if (r->rsrc >= 0) /* relayed light source */ |
| 431 |
< |
vsrcrelay(&nr, r); |
| 432 |
< |
else { /* ordinary reflection */ |
| 433 |
< |
FVECT pnorm; |
| 434 |
< |
double pdot; |
| 435 |
< |
|
| 436 |
< |
if (rayorigin(&nr, r, REFLECTED, bright(mcolor)) < 0) |
| 437 |
< |
return; |
| 438 |
< |
pdot = raynormal(pnorm, r); /* use textures */ |
| 439 |
< |
for (i = 0; i < 3; i++) |
| 440 |
< |
nr.rdir[i] = r->rdir[i] + 2.*pdot*pnorm[i]; |
| 441 |
< |
} |
| 442 |
< |
rayvalue(&nr); |
| 443 |
< |
multcolor(nr.rcol, mcolor); |
| 444 |
< |
addcolor(r->rcol, nr.rcol); |
| 335 |
> |
fprintf(fp, "\twith spot aim (%f,%f,%f) and size %f\n", |
| 336 |
> |
source[sn].sl.s->aim[0], source[sn].sl.s->aim[1], |
| 337 |
> |
source[sn].sl.s->aim[2], source[sn].sl.s->siz); |
| 338 |
|
} |
| 339 |
+ |
#endif |
