| 1 |
|
#ifndef lint |
| 2 |
< |
static const char RCSid[] = "$Id$"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 4 |
|
/* |
| 5 |
|
* o_instance.c - routines for computing ray intersections with octrees. |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
< |
/* ==================================================================== |
| 9 |
< |
* The Radiance Software License, Version 1.0 |
| 10 |
< |
* |
| 11 |
< |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
| 12 |
< |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
| 13 |
< |
* |
| 14 |
< |
* Redistribution and use in source and binary forms, with or without |
| 15 |
< |
* modification, are permitted provided that the following conditions |
| 16 |
< |
* are met: |
| 17 |
< |
* |
| 18 |
< |
* 1. Redistributions of source code must retain the above copyright |
| 19 |
< |
* notice, this list of conditions and the following disclaimer. |
| 20 |
< |
* |
| 21 |
< |
* 2. Redistributions in binary form must reproduce the above copyright |
| 22 |
< |
* notice, this list of conditions and the following disclaimer in |
| 23 |
< |
* the documentation and/or other materials provided with the |
| 24 |
< |
* distribution. |
| 25 |
< |
* |
| 26 |
< |
* 3. The end-user documentation included with the redistribution, |
| 27 |
< |
* if any, must include the following acknowledgment: |
| 28 |
< |
* "This product includes Radiance software |
| 29 |
< |
* (http://radsite.lbl.gov/) |
| 30 |
< |
* developed by the Lawrence Berkeley National Laboratory |
| 31 |
< |
* (http://www.lbl.gov/)." |
| 32 |
< |
* Alternately, this acknowledgment may appear in the software itself, |
| 33 |
< |
* if and wherever such third-party acknowledgments normally appear. |
| 34 |
< |
* |
| 35 |
< |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
| 36 |
< |
* and "The Regents of the University of California" must |
| 37 |
< |
* not be used to endorse or promote products derived from this |
| 38 |
< |
* software without prior written permission. For written |
| 39 |
< |
* permission, please contact [email protected]. |
| 40 |
< |
* |
| 41 |
< |
* 5. Products derived from this software may not be called "Radiance", |
| 42 |
< |
* nor may "Radiance" appear in their name, without prior written |
| 43 |
< |
* permission of Lawrence Berkeley National Laboratory. |
| 44 |
< |
* |
| 45 |
< |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| 46 |
< |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 47 |
< |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 48 |
< |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
| 49 |
< |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 50 |
< |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 51 |
< |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 52 |
< |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 53 |
< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 54 |
< |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 55 |
< |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 56 |
< |
* SUCH DAMAGE. |
| 57 |
< |
* ==================================================================== |
| 58 |
< |
* |
| 59 |
< |
* This software consists of voluntary contributions made by many |
| 60 |
< |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
| 61 |
< |
* information on Lawrence Berkeley National Laboratory, please see |
| 62 |
< |
* <http://www.lbl.gov/>. |
| 63 |
< |
*/ |
| 8 |
> |
#include "copyright.h" |
| 9 |
|
|
| 10 |
|
#include "ray.h" |
| 11 |
|
|
| 17 |
|
register RAY *r; |
| 18 |
|
{ |
| 19 |
|
RAY rcont; |
| 20 |
< |
register INSTANCE *in; |
| 20 |
> |
double d; |
| 21 |
> |
register INSTANCE *ins; |
| 22 |
|
register int i; |
| 23 |
|
/* get the octree */ |
| 24 |
< |
in = getinstance(o, IO_ALL); |
| 24 |
> |
ins = getinstance(o, IO_ALL); |
| 25 |
|
/* copy and transform ray */ |
| 26 |
|
copystruct(&rcont, r); |
| 27 |
< |
multp3(rcont.rorg, r->rorg, in->x.b.xfm); |
| 28 |
< |
multv3(rcont.rdir, r->rdir, in->x.b.xfm); |
| 27 |
> |
multp3(rcont.rorg, r->rorg, ins->x.b.xfm); |
| 28 |
> |
multv3(rcont.rdir, r->rdir, ins->x.b.xfm); |
| 29 |
|
for (i = 0; i < 3; i++) |
| 30 |
< |
rcont.rdir[i] /= in->x.b.sca; |
| 31 |
< |
rcont.rmax *= in->x.b.sca; |
| 30 |
> |
rcont.rdir[i] /= ins->x.b.sca; |
| 31 |
> |
rcont.rmax *= ins->x.b.sca; |
| 32 |
|
/* clear and trace it */ |
| 33 |
|
rayclear(&rcont); |
| 34 |
< |
if (!localhit(&rcont, &in->obj->scube)) |
| 34 |
> |
if (!localhit(&rcont, &ins->obj->scube)) |
| 35 |
|
return(0); /* missed */ |
| 36 |
< |
if (rcont.rot * in->x.f.sca >= r->rot) |
| 36 |
> |
if (rcont.rot * ins->x.f.sca >= r->rot) |
| 37 |
|
return(0); /* not close enough */ |
| 38 |
|
|
| 39 |
|
if (o->omod != OVOID) { /* if we have modifier, use it */ |
| 44 |
|
if (rcont.rox != NULL) { |
| 45 |
|
newrayxf(r); /* allocate transformation */ |
| 46 |
|
/* NOTE: r->rox may equal rcont.rox! */ |
| 47 |
< |
multmat4(r->rox->f.xfm, rcont.rox->f.xfm, in->x.f.xfm); |
| 48 |
< |
r->rox->f.sca = rcont.rox->f.sca * in->x.f.sca; |
| 49 |
< |
multmat4(r->rox->b.xfm, in->x.b.xfm, rcont.rox->b.xfm); |
| 50 |
< |
r->rox->b.sca = in->x.b.sca * rcont.rox->b.sca; |
| 47 |
> |
multmat4(r->rox->f.xfm, rcont.rox->f.xfm, ins->x.f.xfm); |
| 48 |
> |
r->rox->f.sca = rcont.rox->f.sca * ins->x.f.sca; |
| 49 |
> |
multmat4(r->rox->b.xfm, ins->x.b.xfm, rcont.rox->b.xfm); |
| 50 |
> |
r->rox->b.sca = ins->x.b.sca * rcont.rox->b.sca; |
| 51 |
|
} else |
| 52 |
< |
r->rox = &in->x; |
| 52 |
> |
r->rox = &ins->x; |
| 53 |
|
} |
| 54 |
|
/* transform it back */ |
| 55 |
< |
r->rot = rcont.rot * in->x.f.sca; |
| 56 |
< |
multp3(r->rop, rcont.rop, in->x.f.xfm); |
| 57 |
< |
multv3(r->ron, rcont.ron, in->x.f.xfm); |
| 58 |
< |
for (i = 0; i < 3; i++) |
| 59 |
< |
r->ron[i] /= in->x.f.sca; |
| 55 |
> |
r->rot = rcont.rot * ins->x.f.sca; |
| 56 |
> |
multp3(r->rop, rcont.rop, ins->x.f.xfm); |
| 57 |
> |
multv3(r->ron, rcont.ron, ins->x.f.xfm); |
| 58 |
> |
multv3(r->pert, rcont.pert, ins->x.f.xfm); |
| 59 |
> |
d = 1./ins->x.f.sca; |
| 60 |
> |
for (i = 0; i < 3; i++) { |
| 61 |
> |
r->ron[i] *= d; |
| 62 |
> |
r->pert[i] *= d; |
| 63 |
> |
} |
| 64 |
|
r->rod = rcont.rod; |
| 65 |
+ |
r->uv[0] = rcont.uv[0]; |
| 66 |
+ |
r->uv[1] = rcont.uv[1]; |
| 67 |
|
/* return hit */ |
| 68 |
|
return(1); |
| 69 |
|
} |
