boxes/src/shape.h

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1999-06-23 14:26:59 +02:00
/*
* File: shape.h
* Project Main: boxes.c
* Date created: June 23, 1999 (Wednesday, 13:45h)
* Author: Thomas Jensen
* tsjensen@stud.informatik.uni-erlangen.de
* Version: $Id$
* Language: ANSI C
* Purpose: Shape handling and information functions
* Remarks: ---
*
* Revision History:
*
* $Log$
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/
#ifndef SHAPE_H
#define SHAPE_H
typedef enum {
NW, NNW, N, NNE, NE, ENE, E, ESE, SE, SSE, S, SSW, SW, WSW, W, WNW
} shape_t;
extern char *shape_name[];
#define ANZ_SHAPES 16
#define SHAPES_PER_SIDE 5
#define ANZ_SIDES 4
#define ANZ_CORNERS 4
extern shape_t north_side[SHAPES_PER_SIDE]; /* groups of shapes, clockwise */
extern shape_t east_side[SHAPES_PER_SIDE];
extern shape_t south_side[SHAPES_PER_SIDE];
extern shape_t west_side[SHAPES_PER_SIDE];
extern shape_t corners[ANZ_CORNERS];
extern shape_t *sides[ANZ_SIDES];
typedef struct {
char **chars;
size_t height;
size_t width;
int elastic; /* elastic is used only in orginial definition */
} sentry_t;
#define SENTRY_INITIALIZER (sentry_t) {NULL, 0, 0, 0}
int iscorner (const shape_t s);
shape_t *on_side (const shape_t s, const int idx);
int isempty (const sentry_t *shape);
int shapecmp (const sentry_t *shape1, const sentry_t *shape2);
shape_t *both_on_side (const shape_t shape1, const shape_t shape2);
int shape_distance (const shape_t s1, const shape_t s2);
size_t highest (const sentry_t *sarr, const int n, ...);
size_t widest (const sentry_t *sarr, const int n, ...);
shape_t leftmost (const int aside, const int cnt);
#endif /*SHAPE_H*/
/*EOF*/ /* vim: set cindent sw=4: */