| 1428 |
|
static int bsdfPhotonScatter (OBJREC *mat, RAY *rayIn) |
| 1429 |
|
/* Generate new photon ray for BSDF modifier and recurse. */ |
| 1430 |
|
{ |
| 1431 |
+ |
int hasthick = (mat->otype == MAT_BSDF); |
| 1432 |
|
int hitFront; |
| 1433 |
|
SDError err; |
| 1434 |
|
SDValue bsdfVal; |
| 1444 |
|
|
| 1445 |
|
/* Following code adapted from m_bsdf() */ |
| 1446 |
|
/* Check arguments */ |
| 1447 |
< |
if (mat -> oargs.nsargs < 6 || mat -> oargs.nfargs > 9 || |
| 1447 |
> |
if (mat -> oargs.nsargs < hasthick+5 || mat -> oargs.nfargs > 9 || |
| 1448 |
|
mat -> oargs.nfargs % 3) |
| 1449 |
|
objerror(mat, USER, "bad # arguments"); |
| 1450 |
|
|
| 1451 |
|
hitFront = (rayIn -> rod > 0); |
| 1452 |
|
|
| 1453 |
|
/* Load cal file */ |
| 1454 |
< |
mf = getfunc(mat, 5, 0x1d, 1); |
| 1454 |
> |
mf = hasthick ? getfunc(mat, 5, 0x1d, 1) : getfunc(mat, 4, 0xe, 1); |
| 1455 |
|
|
| 1456 |
|
/* Get thickness */ |
| 1457 |
< |
nd.thick = evalue(mf -> ep [0]); |
| 1458 |
< |
if ((-FTINY <= nd.thick) & (nd.thick <= FTINY)) |
| 1459 |
< |
nd.thick = .0; |
| 1457 |
> |
nd.thick = 0; |
| 1458 |
> |
if (hasthick) { |
| 1459 |
> |
nd.thick = evalue(mf -> ep [0]); |
| 1460 |
> |
if ((-FTINY <= nd.thick) & (nd.thick <= FTINY)) |
| 1461 |
> |
nd.thick = .0; |
| 1462 |
> |
} |
| 1463 |
|
|
| 1464 |
|
/* Get BSDF data */ |
| 1465 |
< |
nd.sd = loadBSDF(mat -> oargs.sarg [1]); |
| 1465 |
> |
nd.sd = loadBSDF(mat -> oargs.sarg [hasthick]); |
| 1466 |
|
|
| 1467 |
|
/* Extra diffuse reflectance from material def */ |
| 1468 |
|
if (hitFront) { |
| 1500 |
|
multcolor(nd.tdiff, rayIn -> pcol); |
| 1501 |
|
|
| 1502 |
|
/* Get up vector & xform to world coords */ |
| 1503 |
< |
upvec [0] = evalue(mf -> ep [1]); |
| 1504 |
< |
upvec [1] = evalue(mf -> ep [2]); |
| 1505 |
< |
upvec [2] = evalue(mf -> ep [3]); |
| 1503 |
> |
upvec [0] = evalue(mf -> ep [hasthick+0]); |
| 1504 |
> |
upvec [1] = evalue(mf -> ep [hasthick+1]); |
| 1505 |
> |
upvec [2] = evalue(mf -> ep [hasthick+2]); |
| 1506 |
|
|
| 1507 |
|
if (mf -> fxp != &unitxf) { |
| 1508 |
|
multv3(upvec, upvec, mf -> fxp -> xfm); |
| 1707 |
|
photonScatter [TEX_DATA] = pattexPhotonScatter; |
| 1708 |
|
|
| 1709 |
|
photonScatter [MOD_ALIAS] = aliasPhotonScatter; |
| 1710 |
< |
photonScatter [MAT_BSDF] = bsdfPhotonScatter; |
| 1710 |
> |
photonScatter [MAT_BSDF] = |
| 1711 |
> |
photonScatter [MAT_SBSDF] = bsdfPhotonScatter; |
| 1712 |
|
} |
