src/common/cone.h

/* Copyright (c) 1986 Regents of the University of California */

/* SCCSid "$SunId$ LBL" */

/*
 *  cone.h - header file for cones (cones, cylinders, rings, cups, tubes).
 *
 *      Storage of arguments in the cone structure is a little strange.
 *  To save space, we use an index into the real arguments of the
 *  object structure through ca.  The indices are for the axis
 *  endpoints and radii:  p0, p1, r0 and r1.
 *
 *     2/12/86
 */

typedef struct cone {
        FLOAT  *ca;             /* cone arguments (o->oargs.farg) */
        char  p0, p1;           /* indices for endpoints */
        char  r0, r1;           /* indices for radii */
        FVECT  ad;              /* axis direction vector */
        FLOAT  al;              /* axis length */
        FLOAT  sl;              /* side length */
        FLOAT  (*tm)[4];        /* pointer to transformation matrix */
}  CONE;

#define  CO_R0(co)      ((co)->ca[(co)->r0])
#define  CO_R1(co)      ((co)->ca[(co)->r1])
#define  CO_P0(co)      ((co)->ca+(co)->p0)
#define  CO_P1(co)      ((co)->ca+(co)->p1)

extern CONE  *getcone();
Revision:	2.1
Committed:	Tue Nov 12 16:54:18 1991 UTC (32 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+0 -0 lines
Log Message:	updated revision number for release 2.0
#	Content
1	/* Copyright (c) 1986 Regents of the University of California */
2
3	/* SCCSid "$SunId$ LBL" */
4
5	/*
6	* cone.h - header file for cones (cones, cylinders, rings, cups, tubes).
7	*
8	* Storage of arguments in the cone structure is a little strange.
9	* To save space, we use an index into the real arguments of the
10	* object structure through ca. The indices are for the axis
11	* endpoints and radii: p0, p1, r0 and r1.
12	*
13	* 2/12/86
14	*/
15
16	typedef struct cone {
17	FLOAT ca; / cone arguments (o->oargs.farg) */
18	char p0, p1; /* indices for endpoints */
19	char r0, r1; /* indices for radii */
20	FVECT ad; /* axis direction vector */
21	FLOAT al; /* axis length */
22	FLOAT sl; /* side length */
23	FLOAT (tm)[4]; / pointer to transformation matrix */
24	} CONE;
25
26	#define CO_R0(co) ((co)->ca[(co)->r0])
27	#define CO_R1(co) ((co)->ca[(co)->r1])
28	#define CO_P0(co) ((co)->ca+(co)->p0)
29	#define CO_P1(co) ((co)->ca+(co)->p1)
30
31	extern CONE *getcone();