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/* ****************************************************************************
* pixel_test.c -- Get a pixel's value.
* Copyright (C) 2011 Pierre "PierrotLL" Le Gall <legallpierre89@gmail.com>
* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
*
* This file is part of the 'casiowin/monochromelib' module,
* in libcarrot, an experimental modular libc project.
*
* This file is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This file 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 Lesser General Lesser Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this file. If not, see <http://www.gnu.org/licenses/>.
* ************************************************************************* */
#include <monochrome.h>
ML_Color ML_pixel_test(int x, int y)
{
char *vram, byte;
if(x&~127 || y&~63) return ML_TRANSPARENT;
vram = ML_vram_adress();
byte = 1<<(7-(x&7));
return (vram[(y<<4)+(x>>3)] & byte ? ML_BLACK : ML_WHITE);
}
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