src/common/face.h

/* RCSid: $Id$ */
/*
 *  face.h - header for routines using polygonal faces.
 */

/* ====================================================================
 * 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/>.
 */

#define  VERTEX(f,n)    ((f)->va + 3*(n))

typedef struct {        /* a polygonal face */
        FVECT  norm;            /* the plane's unit normal */
        FLOAT  offset;          /* plane equation:  DOT(norm, v) == offset */
        FLOAT  area;            /* area of face */
        FLOAT  *va;             /* vertex array (o->oargs.farg) */
        short  nv;              /* # of vertices */
        short  ax;              /* axis closest to normal */
} FACE;

#ifdef NOPROTO

extern FACE  *getface();
extern void  freeface();
extern int  inface();

#else

extern FACE  *getface(OBJREC *o);
extern void  freeface(OBJREC *o);
extern int  inface(FVECT p, FACE *f);

#endif
Revision:	2.2
Committed:	Sat Feb 22 02:07:22 2003 UTC (21 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.1:	+69 -5 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
#	User	Rev	Content
1	greg	2.2	/* RCSid: $Id$ */
2	greg	1.1	/*
3			* face.h - header for routines using polygonal faces.
4	greg	2.2	*/
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	greg	1.1	*
24	greg	2.2	* 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	greg	1.1	*/
62
63			#define VERTEX(f,n) ((f)->va + 3*(n))
64
65			typedef struct { /* a polygonal face */
66			FVECT norm; /* the plane's unit normal */
67	greg	1.3	FLOAT offset; /* plane equation: DOT(norm, v) == offset */
68			FLOAT area; /* area of face */
69			FLOAT va; / vertex array (o->oargs.farg) */
70	greg	1.1	short nv; /* # of vertices */
71			short ax; /* axis closest to normal */
72			} FACE;
73
74	greg	2.2	#ifdef NOPROTO
75
76	greg	1.1	extern FACE *getface();
77	greg	2.2	extern void freeface();
78			extern int inface();
79
80			#else
81
82			extern FACE getface(OBJREC o);
83			extern void freeface(OBJREC *o);
84			extern int inface(FVECT p, FACE *f);
85
86			#endif