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/*
* Copyright (C) 2026 Richard
*
* 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 "vec3.h"
double vec3::x() const
{
return e[0];
}
double vec3::y() const
{
return e[1];
}
double vec3::z() const
{
return e[2];
}
vec3 vec3::operator-() const
{
return { -e[0], -e[1], -e[2] };
}
double vec3::operator[]( int i ) const
{
return e.at( i );
}
double& vec3::operator[]( int i )
{
return e.at( i );
}
vec3& vec3::operator+=( const vec3& other )
{
e[0] += other.e[0];
e[1] += other.e[1];
e[2] += other.e[2];
return *this;
}
vec3& vec3::operator*=( double t )
{
e[0] *= t;
e[1] *= t;
e[2] *= t;
return *this;
}
vec3& vec3::operator/=( double t )
{
return *this *= 1 / t;
}
double vec3::length() const
{
return std::sqrt( length_squared() );
}
double vec3::length_squared() const
{
return e[0] * e[0] + e[1] * e[1] + e[2] * e[2];
}
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