Category : C Source Code
Archive   : R386DEV4.ZIP
Filename : SPLITDEF.H

/* Splitting-tree structures */

/* Written by Bernie Roehl, June 1992 */
/* Substantially upgraded by Dave Stampe, August '92 */

/* Copyright 1992 by Dave Stampe and Bernie Roehl.
May be freely used to write software for release into the public domain;
all commercial endeavours MUST contact Bernie Roehl and Dave Stampe
for permission to incorporate any part of this software into their
products!
*/


#ifndef SPLITDEF
typedef struct _split SPLIT;

struct _split {
long x, y, z; /* a point in the splitting plane */
long nx, ny, nz; /* the normal vector to the splitting plane */
OBJLIST *olist; /* list of objects making up this split */
unsigned flags;
char left_type; /* indicates what the left pointer points to */
char right_type; /* indicates what the right pointer points to */
#define ISSPLIT 0
#define ISAREA 1
#define ISOBJLIST 2
void *left, *right; /* can point to a split, an area or an objlists */
};

#define SPLITDEF 1
#endif

#ifndef AREADEF
typedef struct _area AREA;
#endif

typedef struct _area_ref AREA_REF; /* element in a list of area pointers */

struct _area_ref {
AREA *area;
AREA_REF *next;
};

#ifndef AREADEF
struct _area {
long floor_a, floor_b, floor_c, floor_d; /* ax + y + cx + d = 0 */
long ceiling_a, ceiling_b, ceiling_c, ceiling_d; /* ax + y + cx + d = 0 */
void (*fn)();
AREA_REF *visfrom;
int has_tree : 1;
void *ptr;
};
#define AREADEF 1
#endif

/* End of splitdef.h */