| 15 |
|
|
| 16 |
|
#include "source.h" |
| 17 |
|
|
| 18 |
– |
#include "cone.h" |
| 18 |
|
|
| 19 |
< |
#include "face.h" |
| 19 |
> |
double intercircle(), getdisk(); |
| 20 |
|
|
| 22 |
– |
|
| 23 |
– |
double intercircle(); |
| 24 |
– |
SRCREC *makevsrc(); |
| 25 |
– |
|
| 21 |
|
static OBJECT *vobject; /* virtual source objects */ |
| 22 |
|
static int nvobjects = 0; /* number of virtual source objects */ |
| 23 |
|
|
| 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; |
| 74 |
|
/* check each virtual object for projection */ |
| 75 |
|
for (i = 0; i < nvobjects; i++) |
| 76 |
|
/* vproject() calls us recursively */ |
| 77 |
< |
vproject(objptr(i), sr, nr-1); |
| 77 |
> |
vproject(objptr(vobject[i]), sn, nr-1); |
| 78 |
|
} |
| 79 |
|
|
| 80 |
|
|
| 81 |
< |
vproject(o, s, n) /* create projected source(s) if they exist */ |
| 81 |
> |
vproject(o, sn, n) /* create projected source(s) if they exist */ |
| 82 |
|
OBJREC *o; |
| 83 |
< |
SRCREC *s; |
| 83 |
> |
int sn; |
| 84 |
|
int n; |
| 85 |
|
{ |
| 86 |
|
register int i; |
| 87 |
|
register VSMATERIAL *vsmat; |
| 88 |
|
MAT4 proj; |
| 89 |
< |
SRCREC *ns; |
| 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, s, i)) |
| 98 |
< |
if ((ns = makevsrc(o, s, proj)) != NULL) |
| 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 |
< |
SRCREC * |
| 108 |
< |
makevsrc(op, sp, pm) /* make virtual source if reasonable */ |
| 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; |
| 109 |
< |
FVECT nsloc, ocent, nsnorm; |
| 110 |
< |
int nsflags; |
| 113 |
> |
FVECT nsloc, nsnorm, ocent; |
| 114 |
|
double maxrad2; |
| 115 |
+ |
int nsflags; |
| 116 |
|
double d1; |
| 117 |
|
SPOT theirspot, ourspot; |
| 118 |
|
register int i; |
| 119 |
|
|
| 120 |
< |
nsflags = (sp->sflags|(SVIRTUAL|SFOLLOW)) & ~SSPOT; |
| 120 |
> |
nsflags = source[sn].sflags | (SVIRTUAL|SSPOT|SFOLLOW); |
| 121 |
|
/* get object center and max. radius */ |
| 122 |
< |
if (sfun[op->otype].of->getdisk != NULL) { |
| 123 |
< |
maxrad2 = (*sfun[op->otype].of->getdisk)(ocent, op); |
| 124 |
< |
if (maxrad2 <= FTINY) /* too small? */ |
| 121 |
< |
return(NULL); |
| 122 |
< |
nsflags |= SSPOT; |
| 123 |
< |
} |
| 122 |
> |
maxrad2 = getdisk(ocent, op, sn); |
| 123 |
> |
if (maxrad2 <= FTINY) /* too small? */ |
| 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); |
| 130 |
< |
if (nsflags & SSPOT) { |
| 131 |
< |
VCOPY(ourspot.aim, ocent); |
| 132 |
< |
ourspot.siz = PI*maxrad2; |
| 133 |
< |
ourspot.flen = 0.; |
| 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 (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(-1); /* no overlap */ |
| 138 |
|
} |
| 134 |
– |
if (sp->sflags & SSPOT) { |
| 135 |
– |
copystruct(&theirspot, sp->sl.s); |
| 136 |
– |
multp3(theirspot.aim, sp->sl.s->aim, pm); |
| 137 |
– |
if (nsflags & SSPOT && |
| 138 |
– |
!commonbeam(&ourspot, &theirspot, nsloc)) |
| 139 |
– |
return(NULL); /* no overlap */ |
| 140 |
– |
} |
| 139 |
|
} else { /* local source */ |
| 140 |
< |
multp3(nsloc, sp->sloc, pm); |
| 141 |
< |
if (nsflags & SSPOT) { |
| 142 |
< |
for (i = 0; i < 3; i++) |
| 143 |
< |
ourspot.aim[i] = ocent[i] - nsloc[i]; |
| 144 |
< |
if ((d1 = normalize(ourspot.aim)) == 0.) |
| 145 |
< |
return(NULL); /* at source!! */ |
| 146 |
< |
if (sp->sflags & SPROX && d1 > sp->sl.prox) |
| 147 |
< |
return(NULL); /* too far away */ |
| 148 |
< |
ourspot.siz = 2.*PI*(1. - d1/sqrt(d1*d1+maxrad2)); |
| 149 |
< |
ourspot.flen = 0.; |
| 150 |
< |
} else if (sp->sflags & SPROX) { |
| 151 |
< |
FVECT norm; |
| 152 |
< |
double offs; |
| 153 |
< |
/* use distance from plane */ |
| 154 |
< |
offs = (*sfun[op->otype].of->getpleq)(norm, op); |
| 157 |
< |
d1 = DOT(norm, nsloc) - offs; |
| 158 |
< |
if (d1 > sp->sl.prox || d1 < -sp->sl.prox) |
| 159 |
< |
return(NULL); /* too far away */ |
| 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(-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 (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(-1); /* no overlap */ |
| 154 |
> |
ourspot.flen = theirspot.flen; |
| 155 |
|
} |
| 156 |
< |
if (sp->sflags & SSPOT) { |
| 157 |
< |
copystruct(&theirspot, sp->sl.s); |
| 158 |
< |
multv3(theirspot.aim, sp->sl.s->aim, pm); |
| 159 |
< |
if (nsflags & SSPOT) { |
| 165 |
< |
if (!commonspot(&ourspot, &theirspot, nsloc)) |
| 166 |
< |
return(NULL); /* no overlap */ |
| 167 |
< |
ourspot.flen = theirspot.flen; |
| 168 |
< |
} |
| 156 |
> |
if (source[sn].sflags & SFLAT) { /* behind source? */ |
| 157 |
> |
multv3(nsnorm, source[sn].snorm, pm); |
| 158 |
> |
if (checkspot(&ourspot, nsnorm) < 0) |
| 159 |
> |
return(-1); |
| 160 |
|
} |
| 170 |
– |
if (sp->sflags & SFLAT) { /* check for behind source */ |
| 171 |
– |
multv3(nsnorm, sp->snorm, pm); |
| 172 |
– |
if (nsflags & SSPOT && checkspot(&ourspot, nsnorm) < 0) |
| 173 |
– |
return(NULL); |
| 174 |
– |
} |
| 161 |
|
} |
| 162 |
|
/* everything is OK, make source */ |
| 163 |
< |
if ((newsrc = newsource()) == NULL) |
| 163 |
> |
if ((i = newsource()) < 0) |
| 164 |
|
goto memerr; |
| 165 |
< |
newsrc->sflags = nsflags; |
| 166 |
< |
VCOPY(newsrc->sloc, nsloc); |
| 165 |
> |
source[i].sflags = nsflags; |
| 166 |
> |
VCOPY(source[i].sloc, nsloc); |
| 167 |
|
if (nsflags & SFLAT) |
| 168 |
< |
VCOPY(newsrc->snorm, nsnorm); |
| 169 |
< |
newsrc->ss = sp->ss; newsrc->ss2 = sp->ss2; |
| 170 |
< |
if ((nsflags | sp->sflags) & SSPOT) { |
| 171 |
< |
if ((newsrc->sl.s = (SPOT *)malloc(sizeof(SPOT))) == NULL) |
| 172 |
< |
goto memerr; |
| 187 |
< |
if (nsflags & SSPOT) |
| 188 |
< |
copystruct(newsrc->sl.s, &ourspot); |
| 189 |
< |
else |
| 190 |
< |
copystruct(newsrc->sl.s, &theirspot); |
| 191 |
< |
newsrc->sflags |= SSPOT; |
| 192 |
< |
} |
| 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(source[i].sl.s, &ourspot); |
| 173 |
|
if (nsflags & SPROX) |
| 174 |
< |
newsrc->sl.prox = sp->sl.prox; |
| 175 |
< |
newsrc->sa.svnext = sp - source; |
| 176 |
< |
return(newsrc); |
| 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; |
| 309 |
|
cc[i] = c1[i] + l*disp[i]; |
| 310 |
|
return(a2); |
| 311 |
|
} |
| 312 |
+ |
|
| 313 |
+ |
|
| 314 |
+ |
#ifdef DEBUG |
| 315 |
+ |
virtverb(sn, fp) /* print verbose description of virtual source */ |
| 316 |
+ |
register int sn; |
| 317 |
+ |
FILE *fp; |
| 318 |
+ |
{ |
| 319 |
+ |
register int i; |
| 320 |
+ |
|
| 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 |
+ |
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 |
