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root/radiance/ray/src/common/cone.h
Revision: 2.8
Committed: Fri Sep 23 19:04:52 2005 UTC (18 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad5R4, rad5R2, rad4R2P2, rad5R0, rad5R1, rad4R2, rad4R1, rad4R0, rad3R8, rad3R9, rad4R2P1, rad5R3, HEAD
Changes since 2.7: +4 -4 lines
Log Message:
Rearranged some struct's for better efficiency on 64-bit architectures

File Contents

# Content
1 /* RCSid $Id: cone.h,v 2.7 2003/11/14 17:22:06 schorsch Exp $ */
2 /*
3 * cone.h - header file for cones (cones, cylinders, rings, cups, tubes).
4 *
5 * Storage of arguments in the cone structure is a little strange.
6 * To save space, we use an index into the real arguments of the
7 * object structure through ca. The indices are for the axis
8 * endpoints and radii: p0, p1, r0 and r1.
9 *
10 * 2/12/86
11 */
12 #ifndef _RAD_CONE_H_
13 #define _RAD_CONE_H_
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17
18 typedef struct cone {
19 FVECT ad; /* axis direction vector */
20 RREAL al; /* axis length */
21 RREAL sl; /* side length */
22 RREAL *ca; /* cone arguments (o->oargs.farg) */
23 RREAL (*tm)[4]; /* pointer to transformation matrix */
24 char p0, p1; /* indices for endpoints */
25 char r0, r1; /* indices for radii */
26 } CONE;
27
28 #define CO_R0(co) ((co)->ca[(int)((co)->r0)])
29 #define CO_R1(co) ((co)->ca[(int)((co)->r1)])
30 #define CO_P0(co) ((co)->ca+(co)->p0)
31 #define CO_P1(co) ((co)->ca+(co)->p1)
32
33
34 extern CONE *getcone(OBJREC *o, int getxf);
35 extern void freecone(OBJREC *o);
36 extern void conexform(CONE *co);
37
38
39 #ifdef __cplusplus
40 }
41 #endif
42 #endif /* _RAD_CONE_H_ */
43