| 1 |
gwlarson |
3.1 |
#ifndef lint
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| 2 |
greg |
3.2 |
static const char RCSid[] = "$Id$";
|
| 3 |
gwlarson |
3.1 |
#endif
|
| 4 |
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/*
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| 5 |
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* Routines for Radiance -> OpenGL materials.
|
| 6 |
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*/
|
| 7 |
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|
| 8 |
greg |
3.2 |
/* ====================================================================
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| 9 |
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* The Radiance Software License, Version 1.0
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| 10 |
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*
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| 11 |
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* Copyright (c) 1990 - 2002 The Regents of the University of California,
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* through Lawrence Berkeley National Laboratory. All rights reserved.
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| 13 |
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*
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| 14 |
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* Redistribution and use in source and binary forms, with or without
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| 15 |
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* modification, are permitted provided that the following conditions
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| 16 |
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* are met:
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| 17 |
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*
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| 18 |
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* 1. Redistributions of source code must retain the above copyright
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| 19 |
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* notice, this list of conditions and the following disclaimer.
|
| 20 |
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*
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| 21 |
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* 2. Redistributions in binary form must reproduce the above copyright
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| 22 |
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* notice, this list of conditions and the following disclaimer in
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| 23 |
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* the documentation and/or other materials provided with the
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| 24 |
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* distribution.
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| 25 |
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*
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| 26 |
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* 3. The end-user documentation included with the redistribution,
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| 27 |
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* if any, must include the following acknowledgment:
|
| 28 |
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* "This product includes Radiance software
|
| 29 |
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* (http://radsite.lbl.gov/)
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| 30 |
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* developed by the Lawrence Berkeley National Laboratory
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| 31 |
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* (http://www.lbl.gov/)."
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| 32 |
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* Alternately, this acknowledgment may appear in the software itself,
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| 33 |
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* if and wherever such third-party acknowledgments normally appear.
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| 34 |
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*
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| 35 |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
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| 36 |
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* and "The Regents of the University of California" must
|
| 37 |
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* not be used to endorse or promote products derived from this
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| 38 |
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* software without prior written permission. For written
|
| 39 |
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* permission, please contact [email protected].
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| 40 |
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*
|
| 41 |
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* 5. Products derived from this software may not be called "Radiance",
|
| 42 |
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* nor may "Radiance" appear in their name, without prior written
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| 43 |
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* permission of Lawrence Berkeley National Laboratory.
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| 44 |
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*
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| 45 |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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| 46 |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 47 |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 48 |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
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| 49 |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 50 |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 51 |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 52 |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 53 |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 54 |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 55 |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 56 |
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* SUCH DAMAGE.
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| 57 |
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* ====================================================================
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| 58 |
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*
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| 59 |
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* This software consists of voluntary contributions made by many
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| 60 |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more
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| 61 |
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* information on Lawrence Berkeley National Laboratory, please see
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| 62 |
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* <http://www.lbl.gov/>.
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| 63 |
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*/
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| 64 |
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|
| 65 |
gwlarson |
3.1 |
#include "radogl.h"
|
| 66 |
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|
| 67 |
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int domats = 1; /* are we doing materials? */
|
| 68 |
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|
| 69 |
|
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LUTAB mtab = LU_SINIT(free,freemtl);
|
| 70 |
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|
| 71 |
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|
| 72 |
greg |
3.2 |
void
|
| 73 |
gwlarson |
3.1 |
rgl_matclear() /* clean up materials */
|
| 74 |
|
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{
|
| 75 |
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lu_done(&mtab);
|
| 76 |
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domats = 1;
|
| 77 |
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}
|
| 78 |
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|
| 79 |
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|
| 80 |
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MATREC *
|
| 81 |
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getmatp(nam) /* find material record for modifier name */
|
| 82 |
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char *nam;
|
| 83 |
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{
|
| 84 |
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register LUENT *lup;
|
| 85 |
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|
| 86 |
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if (nam == NULL)
|
| 87 |
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return(NULL);
|
| 88 |
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if ((lup = lu_find(&mtab, nam)) == NULL)
|
| 89 |
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return(NULL);
|
| 90 |
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return((MATREC *)lup->data);
|
| 91 |
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}
|
| 92 |
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|
| 93 |
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|
| 94 |
greg |
3.2 |
int
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| 95 |
gwlarson |
3.1 |
o_default(o) /* default object is non-material modifier */
|
| 96 |
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register OBJREC *o;
|
| 97 |
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{
|
| 98 |
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register LUENT *lup;
|
| 99 |
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#ifdef DEBUG
|
| 100 |
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if (o->otype >= 0 && !ismodifier(o->otype))
|
| 101 |
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error(CONSISTENCY, "o_default handed non-modifier");
|
| 102 |
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#endif
|
| 103 |
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/* find name in lookup table */
|
| 104 |
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if ((lup = lu_find(&mtab, o->oname)) == NULL)
|
| 105 |
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goto memerr;
|
| 106 |
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if (lup->key == NULL) { /* new entry? */
|
| 107 |
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lup->key = (char *)malloc(strlen(o->oname)+1);
|
| 108 |
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if (lup->key == NULL)
|
| 109 |
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goto memerr;
|
| 110 |
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strcpy(lup->key, o->oname);
|
| 111 |
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} else if (lup->data != NULL)
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| 112 |
greg |
3.2 |
freemtl((MATREC *)lup->data);
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| 113 |
gwlarson |
3.1 |
if ((lup->data = o->os) != NULL) /* make material reference */
|
| 114 |
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((MATREC *)lup->data)->nlinks++;
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| 115 |
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return;
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| 116 |
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memerr:
|
| 117 |
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error(SYSTEM, "out of memory in o_default");
|
| 118 |
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}
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| 119 |
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| 120 |
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|
| 121 |
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MATREC *
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| 122 |
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newmaterial(nam) /* get an entry for a new material */
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| 123 |
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char *nam;
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| 124 |
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{
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| 125 |
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register LUENT *lup;
|
| 126 |
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/* look it up (assign entry) */
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| 127 |
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if ((lup = lu_find(&mtab, nam)) == NULL)
|
| 128 |
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goto memerr;
|
| 129 |
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if (lup->key == NULL) { /* new entry? */
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| 130 |
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lup->key = (char *)malloc(strlen(nam)+1);
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| 131 |
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if (lup->key == NULL)
|
| 132 |
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goto memerr;
|
| 133 |
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strcpy(lup->key, nam);
|
| 134 |
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} else if (lup->data != NULL)
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| 135 |
greg |
3.2 |
freemtl((MATREC *)lup->data);
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| 136 |
gwlarson |
3.1 |
lup->data = (char *)malloc(sizeof(MATREC));
|
| 137 |
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if (lup->data == NULL)
|
| 138 |
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goto memerr;
|
| 139 |
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((MATREC *)lup->data)->nlinks = 1;
|
| 140 |
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return((MATREC *)lup->data);
|
| 141 |
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memerr:
|
| 142 |
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error(SYSTEM, "out of memory in newmaterial");
|
| 143 |
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}
|
| 144 |
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| 145 |
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|
| 146 |
greg |
3.2 |
void
|
| 147 |
gwlarson |
3.1 |
freemtl(mp) /* free a material */
|
| 148 |
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register MATREC *mp;
|
| 149 |
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{
|
| 150 |
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if (!--mp->nlinks)
|
| 151 |
greg |
3.2 |
free((void *)mp);
|
| 152 |
gwlarson |
3.1 |
}
|
| 153 |
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|
| 154 |
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|
| 155 |
greg |
3.2 |
int
|
| 156 |
gwlarson |
3.1 |
m_normal(o) /* compute normal material parameters */
|
| 157 |
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register OBJREC *o;
|
| 158 |
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{
|
| 159 |
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register MATREC *m;
|
| 160 |
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/* check arguments */
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| 161 |
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if (o->oargs.nfargs != (o->otype == MAT_TRANS ? 7 : 5))
|
| 162 |
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objerror(o, USER, "bad # of real arguments");
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| 163 |
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/* allocate/insert material */
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| 164 |
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m = newmaterial(o->oname);
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| 165 |
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/* assign parameters */
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| 166 |
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setcolor(m->u.m.ambdiff, o->oargs.farg[0],
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| 167 |
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o->oargs.farg[1], o->oargs.farg[2]);
|
| 168 |
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if ((m->type = o->otype) == MAT_METAL)
|
| 169 |
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copycolor(m->u.m.specular, m->u.m.ambdiff);
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| 170 |
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else
|
| 171 |
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setcolor(m->u.m.specular, 1., 1., 1.);
|
| 172 |
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scalecolor(m->u.m.specular, o->oargs.farg[3]);
|
| 173 |
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scalecolor(m->u.m.ambdiff, 1.-o->oargs.farg[3]);
|
| 174 |
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if (m->type == MAT_TRANS) {
|
| 175 |
|
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scalecolor(m->u.m.specular, 1.-o->oargs.farg[5]);
|
| 176 |
|
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scalecolor(m->u.m.ambdiff, 1.-o->oargs.farg[5]);
|
| 177 |
|
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}
|
| 178 |
|
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if (o->oargs.farg[4] <= FTINY)
|
| 179 |
|
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m->u.m.specexp = MAXSPECEXP;
|
| 180 |
|
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else
|
| 181 |
|
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m->u.m.specexp = 2./(o->oargs.farg[4]*o->oargs.farg[4]);
|
| 182 |
|
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if (m->u.m.specexp > MAXSPECEXP)
|
| 183 |
|
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m->u.m.specexp = MAXSPECEXP;
|
| 184 |
|
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}
|
| 185 |
|
|
|
| 186 |
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|
| 187 |
greg |
3.2 |
int
|
| 188 |
gwlarson |
3.1 |
m_aniso(o) /* anisotropic material */
|
| 189 |
|
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register OBJREC *o;
|
| 190 |
|
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{
|
| 191 |
|
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register MATREC *m;
|
| 192 |
|
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/* check arguments */
|
| 193 |
|
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if (o->oargs.nfargs < (o->otype == MAT_TRANS2 ? 8 : 6))
|
| 194 |
|
|
objerror(o, USER, "bad # of real arguments");
|
| 195 |
|
|
/* allocate/insert material */
|
| 196 |
|
|
m = newmaterial(o->oname);
|
| 197 |
|
|
/* assign parameters */
|
| 198 |
|
|
setcolor(m->u.m.ambdiff, o->oargs.farg[0],
|
| 199 |
|
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o->oargs.farg[1], o->oargs.farg[2]);
|
| 200 |
|
|
if ((m->type = o->otype) == MAT_METAL2)
|
| 201 |
|
|
copycolor(m->u.m.specular, m->u.m.ambdiff);
|
| 202 |
|
|
else
|
| 203 |
|
|
setcolor(m->u.m.specular, 1., 1., 1.);
|
| 204 |
|
|
scalecolor(m->u.m.specular, o->oargs.farg[3]);
|
| 205 |
|
|
scalecolor(m->u.m.ambdiff, 1.-o->oargs.farg[3]);
|
| 206 |
|
|
if (m->type == MAT_TRANS2) {
|
| 207 |
|
|
scalecolor(m->u.m.specular, 1.-o->oargs.farg[6]);
|
| 208 |
|
|
scalecolor(m->u.m.ambdiff, 1.-o->oargs.farg[6]);
|
| 209 |
|
|
}
|
| 210 |
|
|
if (o->oargs.farg[4]*o->oargs.farg[5] <= FTINY*FTINY)
|
| 211 |
|
|
m->u.m.specexp = MAXSPECEXP;
|
| 212 |
|
|
else
|
| 213 |
|
|
m->u.m.specexp = 2./(o->oargs.farg[4]*o->oargs.farg[5]);
|
| 214 |
|
|
if (m->u.m.specexp > MAXSPECEXP)
|
| 215 |
|
|
m->u.m.specexp = MAXSPECEXP;
|
| 216 |
|
|
}
|
| 217 |
|
|
|
| 218 |
|
|
|
| 219 |
greg |
3.2 |
int
|
| 220 |
gwlarson |
3.1 |
m_glass(o) /* glass material (hopeless) */
|
| 221 |
|
|
OBJREC *o;
|
| 222 |
|
|
{
|
| 223 |
|
|
register MATREC *m;
|
| 224 |
|
|
|
| 225 |
|
|
m = newmaterial(o->oname);
|
| 226 |
|
|
m->type = o->otype;
|
| 227 |
|
|
setcolor(m->u.m.ambdiff, 0., 0., 0.);
|
| 228 |
|
|
setcolor(m->u.m.specular, .08, .08, .08);
|
| 229 |
|
|
m->u.m.specexp = MAXSPECEXP;
|
| 230 |
|
|
}
|
| 231 |
|
|
|
| 232 |
|
|
|
| 233 |
greg |
3.2 |
int
|
| 234 |
gwlarson |
3.1 |
m_brdf(o) /* convert functional material */
|
| 235 |
|
|
register OBJREC *o;
|
| 236 |
|
|
{
|
| 237 |
|
|
register MATREC *m;
|
| 238 |
|
|
/* check arguments */
|
| 239 |
|
|
if (o->oargs.nfargs < (o->otype == MAT_TFUNC ? 6 : 4))
|
| 240 |
|
|
objerror(o, USER, "bad # of real arguments");
|
| 241 |
|
|
/* allocate/insert material */
|
| 242 |
|
|
m = newmaterial(o->oname);
|
| 243 |
|
|
/* assign parameters */
|
| 244 |
|
|
setcolor(m->u.m.ambdiff, o->oargs.farg[0],
|
| 245 |
|
|
o->oargs.farg[1], o->oargs.farg[2]);
|
| 246 |
|
|
if ((m->type = o->otype) == MAT_MFUNC)
|
| 247 |
|
|
copycolor(m->u.m.specular, m->u.m.ambdiff);
|
| 248 |
|
|
else
|
| 249 |
|
|
setcolor(m->u.m.specular, 1., 1., 1.);
|
| 250 |
|
|
scalecolor(m->u.m.specular, o->oargs.farg[3]);
|
| 251 |
|
|
scalecolor(m->u.m.ambdiff, 1.-o->oargs.farg[3]);
|
| 252 |
|
|
if (m->type == MAT_TFUNC) {
|
| 253 |
|
|
scalecolor(m->u.m.specular, 1.-o->oargs.farg[4]);
|
| 254 |
|
|
scalecolor(m->u.m.ambdiff, 1.-o->oargs.farg[4]);
|
| 255 |
|
|
}
|
| 256 |
|
|
m->u.m.specexp = UNKSPECEXP;
|
| 257 |
|
|
}
|
| 258 |
|
|
|
| 259 |
|
|
|
| 260 |
greg |
3.2 |
int
|
| 261 |
gwlarson |
3.1 |
m_brdf2(o) /* convert advanced functional material */
|
| 262 |
|
|
register OBJREC *o;
|
| 263 |
|
|
{
|
| 264 |
|
|
register MATREC *m;
|
| 265 |
|
|
|
| 266 |
|
|
if (o->oargs.nfargs < 9)
|
| 267 |
|
|
objerror(o, USER, "bad # of real arguments");
|
| 268 |
|
|
m = newmaterial(o->oname);
|
| 269 |
|
|
m->type = o->otype;
|
| 270 |
|
|
/* assign average diffuse front+back */
|
| 271 |
|
|
setcolor(m->u.m.ambdiff, (o->oargs.farg[0]+o->oargs.farg[3])*.5,
|
| 272 |
|
|
(o->oargs.farg[1]+o->oargs.farg[4])*.5,
|
| 273 |
|
|
(o->oargs.farg[2]+o->oargs.farg[5])*.5);
|
| 274 |
|
|
/* guess the rest */
|
| 275 |
|
|
setcolor(m->u.m.specular, .1, .1, .1);
|
| 276 |
|
|
m->u.m.specexp = UNKSPECEXP;
|
| 277 |
|
|
}
|
| 278 |
|
|
|
| 279 |
|
|
|
| 280 |
greg |
3.2 |
int
|
| 281 |
gwlarson |
3.1 |
m_light(o) /* convert light type */
|
| 282 |
|
|
register OBJREC *o;
|
| 283 |
|
|
{
|
| 284 |
|
|
FVECT v;
|
| 285 |
|
|
register MATREC *m;
|
| 286 |
|
|
|
| 287 |
|
|
if (o->oargs.nfargs < (o->otype == MAT_SPOT ? 7 : 3))
|
| 288 |
|
|
objerror(o, USER, "bad # of real arguments");
|
| 289 |
|
|
m = newmaterial(o->oname);
|
| 290 |
|
|
setcolor(m->u.l.emission, o->oargs.farg[0],
|
| 291 |
|
|
o->oargs.farg[1], o->oargs.farg[2]);
|
| 292 |
|
|
if ((m->type = o->otype) == MAT_SPOT) {
|
| 293 |
|
|
if ((m->u.l.spotang = o->oargs.farg[3]/2.) > 90.)
|
| 294 |
|
|
m->u.l.spotang = 180.;
|
| 295 |
|
|
v[0] = o->oargs.farg[4];
|
| 296 |
|
|
v[1] = o->oargs.farg[5];
|
| 297 |
|
|
v[2] = o->oargs.farg[6];
|
| 298 |
|
|
if (normalize(v) == 0.)
|
| 299 |
|
|
objerror(o, USER, "illegal direction");
|
| 300 |
|
|
VCOPY(m->u.l.spotdir, v);
|
| 301 |
|
|
} else {
|
| 302 |
|
|
m->u.l.spotang = 180.;
|
| 303 |
|
|
m->u.l.spotdir[0] = m->u.l.spotdir[1] = 0.;
|
| 304 |
|
|
m->u.l.spotdir[2] = -1.;
|
| 305 |
|
|
}
|
| 306 |
|
|
}
|
| 307 |
|
|
|
| 308 |
|
|
|
| 309 |
greg |
3.2 |
int
|
| 310 |
gwlarson |
3.1 |
m_mirror(o) /* convert mirror type */
|
| 311 |
|
|
register OBJREC *o;
|
| 312 |
|
|
{
|
| 313 |
|
|
register MATREC *m;
|
| 314 |
|
|
|
| 315 |
|
|
if (o->oargs.nfargs != 3)
|
| 316 |
|
|
objerror(o, USER, "bad # real arguments");
|
| 317 |
|
|
m = newmaterial(o->oname);
|
| 318 |
|
|
m->type = o->otype;
|
| 319 |
|
|
setcolor(m->u.m.ambdiff, 0., 0., 0.);
|
| 320 |
|
|
setcolor(m->u.m.specular, o->oargs.farg[0],
|
| 321 |
|
|
o->oargs.farg[1], o->oargs.farg[2]);
|
| 322 |
|
|
m->u.m.specexp = MAXSPECEXP;
|
| 323 |
|
|
}
|
| 324 |
|
|
|
| 325 |
|
|
|
| 326 |
greg |
3.2 |
int
|
| 327 |
gwlarson |
3.1 |
m_prism(o) /* convert prism type */
|
| 328 |
|
|
register OBJREC *o;
|
| 329 |
|
|
{
|
| 330 |
|
|
register MATREC *m;
|
| 331 |
|
|
/* can't really deal with this type */
|
| 332 |
|
|
m = newmaterial(o->oname);
|
| 333 |
|
|
m->type = o->otype;
|
| 334 |
|
|
setcolor(m->u.m.ambdiff, 0.2, 0.2, 0.2);
|
| 335 |
|
|
setcolor(m->u.m.specular, 0.1, 0.1, 0.1);
|
| 336 |
|
|
m->u.m.specexp = UNKSPECEXP;
|
| 337 |
|
|
}
|
