AABB.cpp

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/* Copyright (c) 2014-2017, ARM Limited and Contributors
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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 */

#include "AABB.h"

AABB::AABB(const vec3& base, const vec3& offset)
{
    this->base = base;
    this->offset = offset;
}

vec3 AABB::center() const
{
    return base + vec3(0.5f) * offset;
}

vec3 AABB::corner(unsigned int index) const
{
    vec3 ret = base;
    if (index & 1)
        ret.c.x += offset.c.x;
    if (index & 2)
        ret.c.y += offset.c.y;
    if (index & 4)
        ret.c.z += offset.c.z;

    return ret;
}