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58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*! \file maths.c
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* \brief Math helper functions.
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*/
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/*
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* Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "maths.h"
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#include "config.h"
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#include "internal.h"
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#include <allegro5/allegro_primitives.h>
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#include <allegro5/allegro_ttf.h>
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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SYMBOL_EXPORT double VectorLength(double x, double y, double z) {
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return sqrt(pow(x, 2) + pow(y, 2) + pow(z, 2));
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}
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SYMBOL_EXPORT double Wrap(double left, double right, double val) {
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return left + fmod(val - left, right - left);
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}
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SYMBOL_EXPORT double Clamp(double left, double right, double val) {
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if (val > right) {
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return right;
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}
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if (val < left) {
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return left;
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}
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return val;
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}
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SYMBOL_EXPORT double Lerp(double left, double right, double pos) {
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return left + (right - left) * pos;
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}
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SYMBOL_EXPORT double Sign(double val) {
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return val / fabs(val);
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}
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SYMBOL_EXPORT double Fract(double val) {
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return val - floor(val);
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}
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