h3_vec2d.h

/*
 * Copyright 2016-2017 Uber Technologies, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/** @file vec2d.h
 * @brief   2D floating point vector functions.
 */

#ifndef VEC2D_H
#define VEC2D_H

#include <stdbool.h>

/** @struct Vec2d
 *  @brief 2D floating-point vector
 */
typedef struct {
    double x;  ///< x component
    double y;  ///< y component
} Vec2d;

// Internal functions

double _v2dMag(const Vec2d *v);
void _v2dIntersect(const Vec2d *p0, const Vec2d *p1, const Vec2d *p2,
                   const Vec2d *p3, Vec2d *inter);
bool _v2dAlmostEquals(const Vec2d *p0, const Vec2d *p1);

#endif