Mercurial > molko
view libcore/core/maths.h @ 136:30b68089ae70
core: rework actions and a bit of drawables, closes #2492
In the effort of having as less as possible memory allocation in libcore, the
usage of actions and drawable no longer copy the original source parameter to
let user pass a heap allocated variable or a static storage one.
Update predefined drawable and actions to match these new needs.
author | David Demelier <markand@malikania.fr> |
---|---|
date | Tue, 13 Oct 2020 09:38:44 +0200 |
parents | 789b23e01f52 |
children | 9733d379be89 |
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/* * maths.h -- 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. */ #ifndef MOLKO_MATHS_H #define MOLKO_MATHS_H #include <stdbool.h> /** * \file maths.h * \brief Basic maths. */ /** * Tells if a coordinate is within a rectangle region. * * \param x the region start * \param y the region start * \param w the region width * \param h the region height * \param px the point to test * \param py the point to test * \return True if within the region */ bool maths_is_boxed(int x, int y, unsigned int w, unsigned int h, int px, int py); /** * Update x, y to be centered into a parent region. * * You can select to ignore horizontal/vertical centering by passing NULL to x * or y respectively. * * \param x the pointer to x coordinate to modify * \param y the pointer yo y coordinate to modify * \param w the object width * \param h the object height * \param px the parent region start * \param py the parent region start * \param pw the parent region width * \param ph the parent region height */ void maths_centerize(int *x, int *y, unsigned int w, unsigned int h, int px, int py, unsigned int pw, unsigned int ph); #endif /* !MOLKO_MATHS_H */