| 1 |
< |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
< |
|
| 3 |
< |
/* SCCSid "$SunId$ LBL" */ |
| 4 |
< |
|
| 1 |
> |
/* RCSid $Id$ */ |
| 2 |
|
/* |
| 3 |
|
* face.h - header for routines using polygonal faces. |
| 7 |
– |
* |
| 8 |
– |
* 8/30/85 |
| 4 |
|
*/ |
| 5 |
|
|
| 6 |
+ |
#include "copyright.h" |
| 7 |
+ |
|
| 8 |
|
#define VERTEX(f,n) ((f)->va + 3*(n)) |
| 9 |
|
|
| 10 |
|
typedef struct { /* a polygonal face */ |
| 11 |
|
FVECT norm; /* the plane's unit normal */ |
| 12 |
< |
double const; /* plane equation: DOT(norm, v) == const */ |
| 13 |
< |
double area; /* area of face */ |
| 14 |
< |
double *va; /* vertex array (o->oargs.farg) */ |
| 12 |
> |
FLOAT offset; /* plane equation: DOT(norm, v) == offset */ |
| 13 |
> |
FLOAT area; /* area of face */ |
| 14 |
> |
FLOAT *va; /* vertex array (o->oargs.farg) */ |
| 15 |
|
short nv; /* # of vertices */ |
| 16 |
|
short ax; /* axis closest to normal */ |
| 17 |
|
} FACE; |
| 18 |
|
|
| 19 |
+ |
#ifdef NOPROTO |
| 20 |
+ |
|
| 21 |
|
extern FACE *getface(); |
| 22 |
+ |
extern void freeface(); |
| 23 |
+ |
extern int inface(); |
| 24 |
+ |
|
| 25 |
+ |
#else |
| 26 |
+ |
|
| 27 |
+ |
extern FACE *getface(OBJREC *o); |
| 28 |
+ |
extern void freeface(OBJREC *o); |
| 29 |
+ |
extern int inface(FVECT p, FACE *f); |
| 30 |
+ |
|
| 31 |
+ |
#endif |
