| 6 |
|
* their associated virtual light sources |
| 7 |
|
*/ |
| 8 |
|
|
| 9 |
< |
/* ==================================================================== |
| 10 |
< |
* The Radiance Software License, Version 1.0 |
| 11 |
< |
* |
| 12 |
< |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
| 13 |
< |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
| 14 |
< |
* |
| 15 |
< |
* Redistribution and use in source and binary forms, with or without |
| 16 |
< |
* modification, are permitted provided that the following conditions |
| 17 |
< |
* are met: |
| 18 |
< |
* |
| 19 |
< |
* 1. Redistributions of source code must retain the above copyright |
| 20 |
< |
* notice, this list of conditions and the following disclaimer. |
| 21 |
< |
* |
| 22 |
< |
* 2. Redistributions in binary form must reproduce the above copyright |
| 23 |
< |
* notice, this list of conditions and the following disclaimer in |
| 24 |
< |
* the documentation and/or other materials provided with the |
| 25 |
< |
* distribution. |
| 26 |
< |
* |
| 27 |
< |
* 3. The end-user documentation included with the redistribution, |
| 28 |
< |
* if any, must include the following acknowledgment: |
| 29 |
< |
* "This product includes Radiance software |
| 30 |
< |
* (http://radsite.lbl.gov/) |
| 31 |
< |
* developed by the Lawrence Berkeley National Laboratory |
| 32 |
< |
* (http://www.lbl.gov/)." |
| 33 |
< |
* Alternately, this acknowledgment may appear in the software itself, |
| 34 |
< |
* if and wherever such third-party acknowledgments normally appear. |
| 35 |
< |
* |
| 36 |
< |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
| 37 |
< |
* and "The Regents of the University of California" must |
| 38 |
< |
* not be used to endorse or promote products derived from this |
| 39 |
< |
* software without prior written permission. For written |
| 40 |
< |
* permission, please contact [email protected]. |
| 41 |
< |
* |
| 42 |
< |
* 5. Products derived from this software may not be called "Radiance", |
| 43 |
< |
* nor may "Radiance" appear in their name, without prior written |
| 44 |
< |
* permission of Lawrence Berkeley National Laboratory. |
| 45 |
< |
* |
| 46 |
< |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| 47 |
< |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 48 |
< |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 49 |
< |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
| 50 |
< |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 51 |
< |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 52 |
< |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 53 |
< |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 54 |
< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 55 |
< |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 56 |
< |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 57 |
< |
* SUCH DAMAGE. |
| 58 |
< |
* ==================================================================== |
| 59 |
< |
* |
| 60 |
< |
* This software consists of voluntary contributions made by many |
| 61 |
< |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
| 62 |
< |
* information on Lawrence Berkeley National Laboratory, please see |
| 63 |
< |
* <http://www.lbl.gov/>. |
| 64 |
< |
*/ |
| 9 |
> |
#include "copyright.h" |
| 10 |
|
|
| 11 |
|
#include "ray.h" |
| 67 |
– |
|
| 12 |
|
#include "otypes.h" |
| 13 |
< |
|
| 13 |
> |
#include "rtotypes.h" |
| 14 |
|
#include "source.h" |
| 71 |
– |
|
| 15 |
|
#include "func.h" |
| 16 |
|
|
| 17 |
|
/* |
| 28 |
|
* n A1 A2 .. An |
| 29 |
|
*/ |
| 30 |
|
|
| 31 |
+ |
static int redirect(OBJREC *m, RAY *r, int n); |
| 32 |
+ |
static int dir_proj(MAT4 pm, OBJREC *o, SRCREC *s, int n); |
| 33 |
|
|
| 89 |
– |
static int dir_proj(); |
| 90 |
– |
|
| 34 |
|
VSMATERIAL direct1_vs = {dir_proj, 1}; |
| 35 |
|
VSMATERIAL direct2_vs = {dir_proj, 2}; |
| 36 |
|
|
| 40 |
|
|
| 41 |
|
|
| 42 |
|
int |
| 43 |
< |
m_direct(m, r) /* shade redirected ray */ |
| 44 |
< |
register OBJREC *m; |
| 45 |
< |
register RAY *r; |
| 43 |
> |
m_direct( /* shade redirected ray */ |
| 44 |
> |
OBJREC *m, |
| 45 |
> |
RAY *r |
| 46 |
> |
) |
| 47 |
|
{ |
| 48 |
|
/* check if source ray */ |
| 49 |
|
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
| 60 |
|
} |
| 61 |
|
|
| 62 |
|
|
| 63 |
< |
int |
| 64 |
< |
redirect(m, r, n) /* compute n'th ray redirection */ |
| 65 |
< |
OBJREC *m; |
| 66 |
< |
RAY *r; |
| 67 |
< |
int n; |
| 63 |
> |
static int |
| 64 |
> |
redirect( /* compute n'th ray redirection */ |
| 65 |
> |
OBJREC *m, |
| 66 |
> |
RAY *r, |
| 67 |
> |
int n |
| 68 |
> |
) |
| 69 |
|
{ |
| 70 |
|
MFUNC *mf; |
| 71 |
< |
register EPNODE **va; |
| 71 |
> |
EPNODE **va; |
| 72 |
|
FVECT nsdir; |
| 73 |
|
RAY nr; |
| 74 |
|
double coef; |
| 75 |
< |
register int j; |
| 75 |
> |
int j; |
| 76 |
|
/* set up function */ |
| 77 |
|
mf = getdfunc(m); |
| 78 |
|
setfunc(m, r); |
| 79 |
|
/* assign direction variable */ |
| 80 |
|
if (r->rsrc >= 0) { |
| 81 |
< |
register SRCREC *sp = source + source[r->rsrc].sa.sv.sn; |
| 81 |
> |
SRCREC *sp = source + source[r->rsrc].sa.sv.sn; |
| 82 |
|
|
| 83 |
|
if (sp->sflags & SDISTANT) |
| 84 |
|
VCOPY(nsdir, sp->sloc); |
| 100 |
|
errno = 0; |
| 101 |
|
va = mf->ep + 4*n; |
| 102 |
|
coef = evalue(va[0]); |
| 103 |
< |
if (errno) |
| 103 |
> |
if ((errno == EDOM) | (errno == ERANGE)) |
| 104 |
|
goto computerr; |
| 105 |
< |
if (coef <= FTINY || rayorigin(&nr, r, TRANS, coef) < 0) |
| 105 |
> |
setscolor(nr.rcoef, coef, coef, coef); |
| 106 |
> |
if (rayorigin(&nr, TRANS, r, nr.rcoef) < 0) |
| 107 |
|
return(0); |
| 108 |
|
va++; /* compute direction */ |
| 109 |
|
for (j = 0; j < 3; j++) { |
| 110 |
|
nr.rdir[j] = evalue(va[j]); |
| 111 |
< |
if (errno) |
| 111 |
> |
if (errno == EDOM || errno == ERANGE) |
| 112 |
|
goto computerr; |
| 113 |
|
} |
| 114 |
< |
if (mf->f != &unitxf) |
| 115 |
< |
multv3(nr.rdir, nr.rdir, mf->f->xfm); |
| 114 |
> |
if (mf->fxp != &unitxf) |
| 115 |
> |
multv3(nr.rdir, nr.rdir, mf->fxp->xfm); |
| 116 |
|
if (r->rox != NULL) |
| 117 |
|
multv3(nr.rdir, nr.rdir, r->rox->f.xfm); |
| 118 |
|
if (normalize(nr.rdir) == 0.0) |
| 121 |
|
if (r->rsrc >= 0) |
| 122 |
|
nr.rsrc = source[r->rsrc].sa.sv.sn; |
| 123 |
|
rayvalue(&nr); |
| 124 |
< |
scalecolor(nr.rcol, coef); |
| 125 |
< |
addcolor(r->rcol, nr.rcol); |
| 124 |
> |
smultscolor(nr.rcol, nr.rcoef); |
| 125 |
> |
saddscolor(r->rcol, nr.rcol); |
| 126 |
|
if (r->ro != NULL && isflat(r->ro->otype)) |
| 127 |
< |
r->rt = r->rot + nr.rt; |
| 127 |
> |
r->rxt = r->rot + raydistance(&nr); |
| 128 |
|
return(1); |
| 129 |
|
computerr: |
| 130 |
|
objerror(m, WARNING, "compute error"); |
| 133 |
|
|
| 134 |
|
|
| 135 |
|
static int |
| 136 |
< |
dir_proj(pm, o, s, n) /* compute a director's projection */ |
| 137 |
< |
MAT4 pm; |
| 138 |
< |
OBJREC *o; |
| 139 |
< |
SRCREC *s; |
| 140 |
< |
int n; |
| 136 |
> |
dir_proj( /* compute a director's projection */ |
| 137 |
> |
MAT4 pm, |
| 138 |
> |
OBJREC *o, |
| 139 |
> |
SRCREC *s, |
| 140 |
> |
int n |
| 141 |
> |
) |
| 142 |
|
{ |
| 143 |
|
RAY tr; |
| 144 |
|
OBJREC *m; |
| 146 |
|
EPNODE **va; |
| 147 |
|
FVECT cent, newdir, nv, h; |
| 148 |
|
double coef, olddot, newdot, od; |
| 149 |
< |
register int i, j; |
| 149 |
> |
int i, j; |
| 150 |
|
/* initialize test ray */ |
| 151 |
|
getmaxdisk(cent, o); |
| 152 |
|
if (s->sflags & SDISTANT) |
| 167 |
|
if (olddot <= FTINY && olddot >= -FTINY) |
| 168 |
|
return(0); /* old dir parallels plane */ |
| 169 |
|
tr.rmax = 0.0; |
| 170 |
< |
rayorigin(&tr, NULL, PRIMARY, 1.0); |
| 170 |
> |
rayorigin(&tr, PRIMARY, NULL, NULL); |
| 171 |
|
if (!(*ofun[o->otype].funp)(o, &tr)) |
| 172 |
|
return(0); /* no intersection! */ |
| 173 |
|
/* compute redirection */ |
| 180 |
|
errno = 0; |
| 181 |
|
va = mf->ep + 4*n; |
| 182 |
|
coef = evalue(va[0]); |
| 183 |
< |
if (errno) |
| 183 |
> |
if (errno == EDOM || errno == ERANGE) |
| 184 |
|
goto computerr; |
| 185 |
|
if (coef <= FTINY) |
| 186 |
|
return(0); /* insignificant */ |
| 187 |
|
va++; |
| 188 |
|
for (i = 0; i < 3; i++) { |
| 189 |
|
newdir[i] = evalue(va[i]); |
| 190 |
< |
if (errno) |
| 190 |
> |
if (errno == EDOM || errno == ERANGE) |
| 191 |
|
goto computerr; |
| 192 |
|
} |
| 193 |
< |
if (mf->f != &unitxf) |
| 194 |
< |
multv3(newdir, newdir, mf->f->xfm); |
| 193 |
> |
if (mf->fxp != &unitxf) |
| 194 |
> |
multv3(newdir, newdir, mf->fxp->xfm); |
| 195 |
|
/* normalization unnecessary */ |
| 196 |
|
newdot = DOT(newdir, nv); |
| 197 |
|
if (newdot <= FTINY && newdot >= -FTINY) |
| 205 |
|
pm[i][j] += nv[i]*h[j]; |
| 206 |
|
pm[3][j] = -od*h[j]; |
| 207 |
|
} |
| 208 |
< |
if (newdot > 0.0 ^ olddot > 0.0) /* add mirroring */ |
| 208 |
> |
if ((newdot > 0.0) ^ (olddot > 0.0)) /* add mirroring */ |
| 209 |
|
for (j = 0; j < 3; j++) { |
| 210 |
|
for (i = 0; i < 3; i++) |
| 211 |
|
pm[i][j] -= 2.*nv[i]*nv[j]; |
