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Comparing ray/src/rt/ambio.c (file contents):
Revision 2.2 by greg, Thu Jul 16 12:08:47 1992 UTC vs.
Revision 2.4 by greg, Sat Feb 22 02:07:28 2003 UTC

#	Line 1 | Line 1
1	–	/* Copyright (c) 1992 Regents of the University of California */
2	–
1		#ifndef lint
2	<	static char SCCSid[] = "$SunId$ LBL";
2	>	static const char       RCSid[] = "$Id$";
3		#endif
6	–
4		/*
5		* Read and write portable ambient values
6	+	*
7	+	*  Declarations of external symbols in ambient.h
8		*/
9
10	<	#include <stdio.h>
10	>	/* ====================================================================
11	>	* The Radiance Software License, Version 1.0
12	>	*
13	>	* Copyright (c) 1990 - 2002 The Regents of the University of California,
14	>	* through Lawrence Berkeley National Laboratory.   All rights reserved.
15	>	*
16	>	* Redistribution and use in source and binary forms, with or without
17	>	* modification, are permitted provided that the following conditions
18	>	* are met:
19	>	*
20	>	* 1. Redistributions of source code must retain the above copyright
21	>	*         notice, this list of conditions and the following disclaimer.
22	>	*
23	>	* 2. Redistributions in binary form must reproduce the above copyright
24	>	*       notice, this list of conditions and the following disclaimer in
25	>	*       the documentation and/or other materials provided with the
26	>	*       distribution.
27	>	*
28	>	* 3. The end-user documentation included with the redistribution,
29	>	*           if any, must include the following acknowledgment:
30	>	*             "This product includes Radiance software
31	>	*                 (http://radsite.lbl.gov/)
32	>	*                 developed by the Lawrence Berkeley National Laboratory
33	>	*               (http://www.lbl.gov/)."
34	>	*       Alternately, this acknowledgment may appear in the software itself,
35	>	*       if and wherever such third-party acknowledgments normally appear.
36	>	*
37	>	* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38	>	*       and "The Regents of the University of California" must
39	>	*       not be used to endorse or promote products derived from this
40	>	*       software without prior written permission. For written
41	>	*       permission, please contact [email protected].
42	>	*
43	>	* 5. Products derived from this software may not be called "Radiance",
44	>	*       nor may "Radiance" appear in their name, without prior written
45	>	*       permission of Lawrence Berkeley National Laboratory.
46	>	*
47	>	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48	>	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49	>	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50	>	* DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51	>	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52	>	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53	>	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54	>	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55	>	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56	>	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57	>	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58	>	* SUCH DAMAGE.
59	>	* ====================================================================
60	>	*
61	>	* This software consists of voluntary contributions made by many
62	>	* individuals on behalf of Lawrence Berkeley National Laboratory.   For more
63	>	* information on Lawrence Berkeley National Laboratory, please see
64	>	* <http://www.lbl.gov/>.
65	>	*/
66
67	<	#include "color.h"
67	>	#include "ray.h"
68
69		#include "ambient.h"
70
#	Line 19 | Line 73 | static char SCCSid[] = "$SunId$ LBL";
73
74		#define  getvec(v,fp)   (v)[0]=getflt(fp);(v)[1]=getflt(fp);(v)[2]=getflt(fp)
75
76	+	#define  badflt(x)      ((x) < -FHUGE || (x) > FHUGE)
77
78	<	extern double  getflt();
24	<	extern long  getint();
78	>	#define  badvec(v)      (badflt((v)[0]) || badflt((v)[1]) || badflt((v)[2]))
79
80
81	+
82	+	void
83		putambmagic(fp)                 /* write out ambient value magic number */
84		FILE  *fp;
85		{
#	Line 31 | Line 87 | FILE  *fp;
87		}
88
89
90	+	int
91		hasambmagic(fp)                 /* read in and check validity of magic # */
92		FILE  *fp;
93		{
#	Line 43 | Line 100 | FILE  *fp;
100		}
101
102
103	+	int
104		writambval(av, fp)              /* write ambient value to stream */
105		register AMBVAL  *av;
106		FILE  *fp;
#	Line 63 | Line 121 | FILE  *fp;
121		}
122
123
124	+	int
125	+	ambvalOK(av)                    /* check consistency of ambient value */
126	+	register AMBVAL  *av;
127	+	{
128	+	double  d;
129	+
130	+	if (badvec(av->pos)) return(0);
131	+	if (badvec(av->dir)) return(0);
132	+	d = DOT(av->dir,av->dir);
133	+	if (d < 0.9999 || d > 1.0001) return(0);
134	+	if (av->lvl < 0 || av->lvl > 100) return(0);
135	+	if (av->weight <= 0. || av->weight > 1.) return(0);
136	+	if (av->rad <= 0. || av->rad >= FHUGE) return(0);
137	+	if (colval(av->val,RED) < 0. ||
138	+	colval(av->val,RED) > FHUGE ||
139	+	colval(av->val,GRN) < 0. ||
140	+	colval(av->val,GRN) > FHUGE ||
141	+	colval(av->val,BLU) < 0. ||
142	+	colval(av->val,BLU) > FHUGE) return(0);
143	+	if (badvec(av->gpos)) return(0);
144	+	if (badvec(av->gdir)) return(0);
145	+	return(1);
146	+	}
147	+
148	+
149	+	int
150		readambval(av, fp)              /* read ambient value from stream */
151		register AMBVAL  *av;
152		FILE  *fp;
#	Line 81 | Line 165 | FILE  *fp;
165		av->rad = getflt(fp);
166		getvec(av->gpos, fp);
167		getvec(av->gdir, fp);
168	<	return(feof(fp) ? 0 : 1);
168	>	return(feof(fp) ? 0 : ambvalOK(av));
169		}

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