boxes/src/shape.h
2022-09-18 15:00:15 +02:00

76 lines
2.2 KiB
C

/*
* boxes - Command line filter to draw/remove ASCII boxes around text
* Copyright (c) 1999-2021 Thomas Jensen and the boxes contributors
*
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
* License, version 3, as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
* You should have received a copy of the GNU General Public License along with this program.
* If not, see <https://www.gnu.org/licenses/>.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/
/*
* Shape handling and information functions
*/
#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 NUM_SHAPES 16
#define SHAPES_PER_SIDE 5
#define NUM_SIDES 4
#define NUM_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[NUM_CORNERS];
extern shape_t *sides[NUM_SIDES];
typedef struct {
char **chars;
size_t height;
size_t width;
int elastic; /* elastic is used only in original definition */
} sentry_t;
#define SENTRY_INITIALIZER (sentry_t) {NULL, 0, 0, 0}
int genshape (const size_t width, const size_t height, char ***chars);
void freeshape (sentry_t *shape);
shape_t findshape (const sentry_t *sarr, const int num);
int on_side (const shape_t s, const int idx);
int isempty (const sentry_t *shape);
int isdeepempty (const sentry_t *shape);
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);
int empty_side (sentry_t *sarr, const int aside);
#endif /*SHAPE_H*/
/*EOF*/ /* vim: set cindent sw=4: */