Mercurial > molko
annotate libmlk-core/mlk/core/maths.c @ 646:7e1eb7f6c049 default tip @
misc: remove .clang
author | David Demelier <markand@malikania.fr> |
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date | Sun, 04 Feb 2024 15:24:37 +0100 |
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1 /* |
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2 * maths.c -- basic maths |
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3 * |
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4 * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #include "maths.h" |
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20 |
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21 int |
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22 mlk_maths_is_boxed(int x, int y, int px, int py, unsigned int pw, unsigned int ph) |
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23 { |
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24 return x >= px && x <= (int)(px + pw) && y >= py && y <= (int)(py + ph); |
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25 } |
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26 |
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27 float |
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28 mlk_maths_scale(float in, float old_min, float old_max, float new_min, float new_max) |
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29 { |
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30 return (in / ((old_max - old_min) / (new_max - new_min))) + new_min; |
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31 } |