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/*
* Copyright (C) 2015-2017 Karlsruhe Institute of Technology
*
* This file is part of Ufo.
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef UFO_MATH_H
#define UFO_MATH_H
#include <glib.h>
#define UFO_MATH_EPSILON 1e-7
#define UFO_MATH_ARE_ALMOST_EQUAL(a, b) (ABS ((a) - (b)) < UFO_MATH_EPSILON)
typedef struct {
gdouble x, y, z;
} UfoPoint;
UfoPoint *ufo_point_new (gdouble x,
gdouble y,
gdouble z);
void ufo_point_free (UfoPoint *point);
void ufo_point_mul_scalar (UfoPoint *point,
gdouble value);
void ufo_point_add (UfoPoint *point,
UfoPoint *other);
void ufo_point_subtract (UfoPoint *point,
UfoPoint *other);
gdouble ufo_point_dot_product (UfoPoint *point,
UfoPoint *other);
void ufo_point_rotate_x (UfoPoint *point,
gdouble angle);
void ufo_point_rotate_y (UfoPoint *point,
gdouble angle);
void ufo_point_rotate_z (UfoPoint *point,
gdouble angle);
gdouble ufo_array_maximum (gdouble *array,
gint num_values);
gdouble ufo_array_minimum (gdouble *array,
gint num_values);
gdouble ufo_clip_value (gdouble value,
gdouble minimum,
gdouble maximum);
#endif
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