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#include "otypes.h" |
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#include "rtotypes.h" |
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#include "source.h" |
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#include "pmapmat.h" |
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|
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/* |
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* The real arguments for MAT_MIRROR are simply: |
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VSMATERIAL mirror_vs = {mir_proj, 1}; |
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|
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|
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< |
extern int |
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int |
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m_mirror( /* shade mirrored ray */ |
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< |
register OBJREC *m, |
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< |
register RAY *r |
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OBJREC *m, |
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RAY *r |
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) |
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{ |
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COLOR mcolor; |
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RAY nr; |
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int rpure = 1; |
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< |
register int i; |
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> |
int i; |
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|
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/* PMAP: skip specular refl via ambient bounce if already accounted for |
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* in photon map */ |
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if (ambRayInPmap(r)) |
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return(1); |
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/* check arguments */ |
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if (m->oargs.nfargs != 3 || m->oargs.nsargs > 1) |
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objerror(m, USER, "bad number of arguments"); |
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/* check for substitute material */ |
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< |
if (m->oargs.nsargs > 0 && |
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/* but avoid double-counting */ |
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> |
if (m->oargs.nsargs > 0 && !(r->crtype & (AMBIENT|SPECULAR)) && |
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(r->rsrc < 0 || source[r->rsrc].so != r->ro)) { |
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if (!strcmp(m->oargs.sarg[0], VOIDID)) { |
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raytrans(r); |
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if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
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return(1); |
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|
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< |
if (r->rod < 0.) /* back is black */ |
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> |
if (r->rod < 0.) { /* back is black */ |
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> |
if (!backvis) |
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> |
raytrans(r); /* unless back visibility is off */ |
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return(1); |
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} |
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/* get modifiers */ |
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raytexture(r, m->omod); |
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/* assign material color */ |
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multcolor(mcolor, r->pcol); |
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/* compute reflected ray */ |
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if (r->rsrc >= 0) { /* relayed light source */ |
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< |
rayorigin(&nr, r, REFLECTED, 1.); |
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> |
rayorigin(&nr, REFLECTED, r, mcolor); |
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/* ignore textures */ |
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for (i = 0; i < 3; i++) |
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nr.rdir[i] = r->rdir[i] + 2.*r->rod*r->ron[i]; |
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FVECT pnorm; |
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double pdot; |
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|
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< |
if (rayorigin(&nr, r, REFLECTED, bright(mcolor)) < 0) |
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> |
if (rayorigin(&nr, REFLECTED, r, mcolor) < 0) |
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return(1); |
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< |
if (DOT(r->pert,r->pert) > FTINY*FTINY) { |
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if (!(r->crtype & AMBIENT) && |
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DOT(r->pert,r->pert) > FTINY*FTINY) { |
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pdot = raynormal(pnorm, r); /* use textures */ |
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for (i = 0; i < 3; i++) |
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nr.rdir[i] = r->rdir[i] + 2.*pdot*pnorm[i]; |
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for (i = 0; i < 3; i++) |
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nr.rdir[i] = r->rdir[i] + 2.*r->rod*r->ron[i]; |
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} |
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+ |
checknorm(nr.rdir); |
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rayvalue(&nr); |
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< |
multcolor(nr.rcol, mcolor); |
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> |
multcolor(nr.rcol, nr.rcoef); |
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addcolor(r->rcol, nr.rcol); |
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if (rpure && r->ro != NULL && isflat(r->ro->otype)) |
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r->rt = r->rot + nr.rt; |
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static int |
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mir_proj( /* compute a mirror's projection */ |
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MAT4 pm, |
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< |
register OBJREC *o, |
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> |
OBJREC *o, |
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SRCREC *s, |
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int n |
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) |
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{ |
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+ |
double corr = 1.; |
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FVECT nv, sc; |
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< |
double od; |
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< |
register int i, j; |
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> |
double od, offs; |
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> |
int i; |
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/* get surface normal and offset */ |
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< |
od = getplaneq(nv, o); |
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< |
/* check for extreme point for behind */ |
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> |
offs = od = getplaneq(nv, o); |
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> |
if (s->sflags & SDISTANT) |
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> |
offs = 0.; |
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> |
/* check for extreme point behind */ |
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> |
if (s->sflags & SCIR) { |
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> |
if (s->sflags & (SFLAT|SDISTANT)) |
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> |
corr = 1.12837917; /* correct setflatss() */ |
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> |
else |
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> |
corr = 1.0/0.7236; /* correct sphsetsrc() */ |
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> |
} |
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VCOPY(sc, s->sloc); |
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for (i = s->sflags & SFLAT ? SV : SW; i >= 0; i--) |
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< |
if (DOT(nv, s->ss[i]) > 0.) |
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< |
for (j = 0; j < 3; j++) |
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< |
sc[j] += s->ss[i][j]; |
| 138 |
> |
if (DOT(nv, s->ss[i]) > offs) |
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> |
VSUM(sc, sc, s->ss[i], corr); |
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else |
| 141 |
< |
for (j = 0; j < 3; j++) |
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< |
sc[j] -= s->ss[i][j]; |
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< |
if (DOT(sc, nv) <= (s->sflags & SDISTANT ? FTINY : od+FTINY)) |
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> |
VSUM(sc, sc, s->ss[i], -corr); |
| 142 |
> |
if (DOT(sc, nv) <= offs+FTINY) |
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return(0); |
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/* everything OK -- compute projection */ |
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mirrorproj(pm, nv, od); |
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|
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static void |
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mirrorproj( /* get mirror projection for surface */ |
| 152 |
< |
register MAT4 m, |
| 152 |
> |
MAT4 m, |
| 153 |
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FVECT nv, |
| 154 |
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double offs |
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) |
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{ |
| 157 |
< |
register int i, j; |
| 157 |
> |
int i, j; |
| 158 |
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/* assign matrix */ |
| 159 |
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setident4(m); |
| 160 |
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for (j = 0; j < 3; j++) { |
