56 lines
2.4 KiB
C
56 lines
2.4 KiB
C
|
/*
|
||
|
|
* libtcod 1.6.0
|
||
|
|
* Copyright (c) 2008,2009,2010,2012,2013 Jice & Mingos
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* * Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* * The name of Jice or Mingos may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY JICE AND MINGOS ``AS IS'' AND ANY
|
||
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
* DISCLAIMED. IN NO EVENT SHALL JICE OR MINGOS BE LIABLE FOR ANY
|
||
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _TCOD_BRESENHAM_H
|
||
|
|
#define _TCOD_BRESENHAM_H
|
||
|
|
|
||
|
|
typedef bool (*TCOD_line_listener_t) (int x, int y);
|
||
|
|
|
||
|
|
TCODLIB_API void TCOD_line_init(int xFrom, int yFrom, int xTo, int yTo);
|
||
|
|
TCODLIB_API bool TCOD_line_step(int *xCur, int *yCur); /* advance one step. returns true if we reach destination */
|
||
|
|
/* atomic callback function. Stops when the callback returns false */
|
||
|
|
TCODLIB_API bool TCOD_line(int xFrom, int yFrom, int xTo, int yTo, TCOD_line_listener_t listener);
|
||
|
|
|
||
|
|
/* thread-safe versions */
|
||
|
|
typedef struct {
|
||
|
|
int stepx;
|
||
|
|
int stepy;
|
||
|
|
int e;
|
||
|
|
int deltax;
|
||
|
|
int deltay;
|
||
|
|
int origx;
|
||
|
|
int origy;
|
||
|
|
int destx;
|
||
|
|
int desty;
|
||
|
|
} TCOD_bresenham_data_t;
|
||
|
|
|
||
|
|
TCODLIB_API void TCOD_line_init_mt(int xFrom, int yFrom, int xTo, int yTo, TCOD_bresenham_data_t *data);
|
||
|
|
TCODLIB_API bool TCOD_line_step_mt(int *xCur, int *yCur, TCOD_bresenham_data_t *data);
|
||
|
|
TCODLIB_API bool TCOD_line_mt(int xFrom, int yFrom, int xTo, int yTo, TCOD_line_listener_t listener, TCOD_bresenham_data_t *data);
|
||
|
|
|
||
|
|
#endif
|