Mercurial > molko
view libmlk-core/mlk/core/maths.h @ 545:27303e9402de
core: introduce mlk_alloc_expand
author | David Demelier <markand@malikania.fr> |
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date | Sun, 05 Mar 2023 22:14:02 +0100 |
parents | 3b9f2c82cbae |
children |
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/* * maths.h -- basic maths * * Copyright (c) 2020-2023 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. */ #ifndef MLK_CORE_MATHS_H #define MLK_CORE_MATHS_H /** * \file mlk/core/maths.h * \brief Basic maths */ #if defined(__cplusplus) extern "C" { #endif /** * Returns non-zero if the coordinates x, y inside the bounding rectangle. * * \param x the x coordinate * \param y the y coordinate * \param px rectangle x coordinate * \param py rectangle y coordinate * \param pw rectangle width * \param ph rectangle height * \return non-zero if x, y is within pw, ph, px, py */ int mlk_maths_is_boxed(int x, int y, int px, int py, unsigned int pw, unsigned int ph); /** * Scale a value within two ranges. * * \param in the value to scale * \param old_min old minimum * \param old_max old maximum * \param new_min new minimum * \param new_max new maximum * \return scaled value */ float mlk_maths_scale(float in, float old_min, float old_max, float new_min, float new_max); #if defined(__cplusplus) } #endif #endif /* !MLK_CORE_MATHS_H */