src/common/fvect.h

/* RCSid: $Id$ */
/*
 * Declarations for floating-point vector operations.
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

#ifdef  SMLFLT
#define  FLOAT          float
#define  FTINY          (1e-3)
#else
#define  FLOAT          double
#define  FTINY          (1e-6)
#endif
#define  FHUGE          (1e10)

typedef FLOAT  FVECT[3];

#define  VCOPY(v1,v2)   ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2])
#define  DOT(v1,v2)     ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2])
#define  VLEN(v)        sqrt(DOT(v,v))
#define  VADD(vr,v1,v2) ((vr)[0]=(v1)[0]+(v2)[0], \
                                (vr)[1]=(v1)[1]+(v2)[1], \
                                (vr)[2]=(v1)[2]+(v2)[2])
#define  VSUB(vr,v1,v2) ((vr)[0]=(v1)[0]-(v2)[0], \
                                (vr)[1]=(v1)[1]-(v2)[1], \
                                (vr)[2]=(v1)[2]-(v2)[2])
#define  VSUM(vr,v1,v2,f)       ((vr)[0]=(v1)[0]+(f)*(v2)[0], \
                                (vr)[1]=(v1)[1]+(f)*(v2)[1], \
                                (vr)[2]=(v1)[2]+(f)*(v2)[2])
#define  VCROSS(vr,v1,v2) \
                        ((vr)[0]=(v1)[1]*(v2)[2]-(v1)[2]*(v2)[1], \
                        (vr)[1]=(v1)[2]*(v2)[0]-(v1)[0]*(v2)[2], \
                        (vr)[2]=(v1)[0]*(v2)[1]-(v1)[1]*(v2)[0])

#ifdef NOPROTO

extern double  fdot(), dist2(), dist2lseg(), dist2line(), normalize();
extern void  fcross(), fvsum(), spinvector();

#else

extern double   fdot(FVECT v1, FVECT v2);
extern double   dist2(FVECT v1, FVECT v2);
extern double   dist2line(FVECT p, FVECT ep1, FVECT ep2);
extern double   dist2lseg(FVECT p, FVECT ep1, FVECT ep2);
extern void     fcross(FVECT vres, FVECT v1, FVECT v2);
extern void     fvsum(FVECT vres, FVECT v0, FVECT v1, double f);
extern double   normalize(FVECT v);
extern void     spinvector(FVECT vres, FVECT vorig, FVECT vnorm, double theta);

#endif
Revision:	2.7
Committed:	Sat Feb 22 02:07:22 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.6:	+76 -2 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	/* RCSid: $Id$ */
2	/*
3	* Declarations for floating-point vector operations.
4	*/
5
6	/* ====================================================================
7	* The Radiance Software License, Version 1.0
8	*
9	* Copyright (c) 1990 - 2002 The Regents of the University of California,
10	* through Lawrence Berkeley National Laboratory. All rights reserved.
11	*
12	* Redistribution and use in source and binary forms, with or without
13	* modification, are permitted provided that the following conditions
14	* are met:
15	*
16	* 1. Redistributions of source code must retain the above copyright
17	* notice, this list of conditions and the following disclaimer.
18	*
19	* 2. Redistributions in binary form must reproduce the above copyright
20	* notice, this list of conditions and the following disclaimer in
21	* the documentation and/or other materials provided with the
22	* distribution.
23	*
24	* 3. The end-user documentation included with the redistribution,
25	* if any, must include the following acknowledgment:
26	* "This product includes Radiance software
27	* (http://radsite.lbl.gov/)
28	* developed by the Lawrence Berkeley National Laboratory
29	* (http://www.lbl.gov/)."
30	* Alternately, this acknowledgment may appear in the software itself,
31	* if and wherever such third-party acknowledgments normally appear.
32	*
33	* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
34	* and "The Regents of the University of California" must
35	* not be used to endorse or promote products derived from this
36	* software without prior written permission. For written
37	* permission, please contact [email protected].
38	*
39	* 5. Products derived from this software may not be called "Radiance",
40	* nor may "Radiance" appear in their name, without prior written
41	* permission of Lawrence Berkeley National Laboratory.
42	*
43	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
44	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
45	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
46	* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
47	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
50	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
51	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
52	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
53	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54	* SUCH DAMAGE.
55	* ====================================================================
56	*
57	* This software consists of voluntary contributions made by many
58	* individuals on behalf of Lawrence Berkeley National Laboratory. For more
59	* information on Lawrence Berkeley National Laboratory, please see
60	* <http://www.lbl.gov/>.
61	*/
62
63	#ifdef SMLFLT
64	#define FLOAT float
65	#define FTINY (1e-3)
66	#else
67	#define FLOAT double
68	#define FTINY (1e-6)
69	#endif
70	#define FHUGE (1e10)
71
72	typedef FLOAT FVECT[3];
73
74	#define VCOPY(v1,v2) ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2])
75	#define DOT(v1,v2) ((v1)[0](v2)[0]+(v1)[1](v2)[1]+(v1)[2]*(v2)[2])
76	#define VLEN(v) sqrt(DOT(v,v))
77	#define VADD(vr,v1,v2) ((vr)[0]=(v1)[0]+(v2)[0], \
78	(vr)[1]=(v1)[1]+(v2)[1], \
79	(vr)[2]=(v1)[2]+(v2)[2])
80	#define VSUB(vr,v1,v2) ((vr)[0]=(v1)[0]-(v2)[0], \
81	(vr)[1]=(v1)[1]-(v2)[1], \
82	(vr)[2]=(v1)[2]-(v2)[2])
83	#define VSUM(vr,v1,v2,f) ((vr)[0]=(v1)[0]+(f)*(v2)[0], \
84	(vr)[1]=(v1)[1]+(f)*(v2)[1], \
85	(vr)[2]=(v1)[2]+(f)*(v2)[2])
86	#define VCROSS(vr,v1,v2) \
87	((vr)[0]=(v1)[1](v2)[2]-(v1)[2](v2)[1], \
88	(vr)[1]=(v1)[2](v2)[0]-(v1)[0](v2)[2], \
89	(vr)[2]=(v1)[0](v2)[1]-(v1)[1](v2)[0])
90
91	#ifdef NOPROTO
92
93	extern double fdot(), dist2(), dist2lseg(), dist2line(), normalize();
94	extern void fcross(), fvsum(), spinvector();
95
96	#else
97
98	extern double fdot(FVECT v1, FVECT v2);
99	extern double dist2(FVECT v1, FVECT v2);
100	extern double dist2line(FVECT p, FVECT ep1, FVECT ep2);
101	extern double dist2lseg(FVECT p, FVECT ep1, FVECT ep2);
102	extern void fcross(FVECT vres, FVECT v1, FVECT v2);
103	extern void fvsum(FVECT vres, FVECT v0, FVECT v1, double f);
104	extern double normalize(FVECT v);
105	extern void spinvector(FVECT vres, FVECT vorig, FVECT vnorm, double theta);
106
107	#endif