/*

* This file is part of the GreasePad distribution (https://github.com/FraunhoferIOSB/GreasePad).

* Copyright (c) 2022 Jochen Meidow, Fraunhofer IOSB

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program 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 General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

#include "aabb.h"

#include <Eigen/Dense> // Eigen

Aabb::Aabb( const double x_min, const double x_max,

const double y_min, const double y_max)

: m_x_min(x_min), m_x_max(x_max), m_y_min(y_min), m_y_max(y_max)

{

assert( m_x_min <= m_x_max ); // option: swap

assert( m_y_min <= m_y_max );

}

bool Aabb::overlaps( const Aabb & other) const

{

return ( ( std::fmin( m_x_max, other.m_x_max) > std::fmax( m_x_min, other.m_x_min) )

&& ( std::fmin( m_y_max, other.m_y_max) > std::fmax( m_y_min, other.m_y_min) )

);

}

Aabb Aabb::united( const Aabb & other) const

{

return { std::fmin( m_x_min, other.m_x_min),

std::fmax( m_x_max, other.m_x_max),

std::fmin( m_y_min, other.m_y_min),

std::fmax( m_y_max, other.m_y_max) };

}