Mercurial > molko
diff libcore/core/maths.c @ 121:789b23e01f52
misc: reorganize hierarchy, closes #2490
author | David Demelier <markand@malikania.fr> |
---|---|
date | Mon, 05 Oct 2020 13:25:06 +0200 |
parents | src/core/maths.c@ed1a6bb02a78 |
children | eadfed7674ac |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libcore/core/maths.c Mon Oct 05 13:25:06 2020 +0200 @@ -0,0 +1,44 @@ +/* + * maths.c -- basic maths + * + * Copyright (c) 2020 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "maths.h" + +bool +maths_is_boxed(int x, int y, unsigned int w, unsigned int h, int px, int py) +{ + return px >= x && + py >= y && + px <= x + w && + py <= y + h; +} + +void +maths_centerize(int *x, + int *y, + unsigned int w, + unsigned int h, + int px, + int py, + unsigned int pw, + unsigned int ph) +{ + if (x) + *x = px + (pw / 2) - (w / 2); + if (y) + *y = py + (ph / 2) - (h / 2); +}