1/*
2 * Copyright (c) 2018-2019, Salvatore Sanfilippo <antirez at gmail dot com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * * Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * * Neither the name of Redis nor the names of its contributors may be used
14 * to endorse or promote products derived from this software without
15 * specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/* This structure represents our canvas. Drawing functions will take a pointer
31 * to a canvas to write to it. Later the canvas can be rendered to a string
32 * suitable to be printed on the screen, using unicode Braille characters. */
33
34/* This represents a very simple generic canvas in order to draw stuff.
35 * It's up to each LOLWUT versions to translate what they draw to the
36 * screen, depending on the result to accomplish. */
37
38#ifndef __LOLWUT_H
39#define __LOLWUT_H
40
41typedef struct lwCanvas {
42 int width;
43 int height;
44 char *pixels;
45} lwCanvas;
46
47/* Drawing functions implemented inside lolwut.c. */
48lwCanvas *lwCreateCanvas(int width, int height, int bgcolor);
49void lwFreeCanvas(lwCanvas *canvas);
50void lwDrawPixel(lwCanvas *canvas, int x, int y, int color);
51int lwGetPixel(lwCanvas *canvas, int x, int y);
52void lwDrawLine(lwCanvas *canvas, int x1, int y1, int x2, int y2, int color);
53void lwDrawSquare(lwCanvas *canvas, int x, int y, float size, float angle, int color);
54
55#endif
56