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50 lines
2.5 KiB
C
50 lines
2.5 KiB
C
/*
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* Copyright (c) 2018-2019, Salvatore Sanfilippo <antirez at gmail dot com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* This structure represents our canvas. Drawing functions will take a pointer
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* to a canvas to write to it. Later the canvas can be rendered to a string
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* suitable to be printed on the screen, using unicode Braille characters. */
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/* This represents a very simple generic canvas in order to draw stuff.
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* It's up to each LOLWUT versions to translate what they draw to the
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* screen, depending on the result to accomplish. */
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typedef struct lwCanvas {
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int width;
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int height;
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char *pixels;
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} lwCanvas;
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/* Drawing functions implemented inside lolwut.c. */
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lwCanvas *lwCreateCanvas(int width, int height, int bgcolor);
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void lwFreeCanvas(lwCanvas *canvas);
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void lwDrawPixel(lwCanvas *canvas, int x, int y, int color);
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int lwGetPixel(lwCanvas *canvas, int x, int y);
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void lwDrawLine(lwCanvas *canvas, int x1, int y1, int x2, int y2, int color);
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void lwDrawSquare(lwCanvas *canvas, int x, int y, float size, float angle, int color);
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