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root/radiance/ray/src/common/face.h
Revision: 2.6
Committed: Fri Jun 27 06:53:21 2003 UTC (20 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad5R4, rad5R2, rad4R2P2, rad5R0, rad5R1, rad3R7P2, rad3R7P1, rad4R2, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1, rad5R3, HEAD
Changes since 2.5: +1 -3 lines
Log Message:
Broke standard.h into rtio.h, rterror.h, rtmath.h, and rtmisc.h

File Contents

# Content
1 /* RCSid $Id: face.h,v 2.5 2003/06/26 00:58:09 schorsch Exp $ */
2 /*
3 * face.h - header for routines using polygonal faces.
4 */
5 #ifndef _RAD_FACE_H_
6 #define _RAD_FACE_H_
7 #ifdef __cplusplus
8 extern "C" {
9 #endif
10
11 #define VERTEX(f,n) ((f)->va + 3*(n))
12
13 typedef struct { /* a polygonal face */
14 FVECT norm; /* the plane's unit normal */
15 RREAL offset; /* plane equation: DOT(norm, v) == offset */
16 RREAL area; /* area of face */
17 RREAL *va; /* vertex array (o->oargs.farg) */
18 short nv; /* # of vertices */
19 short ax; /* axis closest to normal */
20 } FACE;
21
22
23 extern FACE *getface(OBJREC *o);
24 extern void freeface(OBJREC *o);
25 extern int inface(FVECT p, FACE *f);
26
27
28 #ifdef __cplusplus
29 }
30 #endif
31 #endif /* _RAD_FACE_H_ */
32