vector3d.cpp

//
//  vector3d.cpp
//  lgrid
//
//  Created by Cianciosa, Mark R. on 2/7/16.
//  Copyright © 2016 Cianciosa, Mark R. All rights reserved.
//
 
#include "vector3d.hpp"
#include <cmath>
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
vector3d::vector3d(const double x_, const double y_, const double z_) :
x(x_), y(y_), z(z_) {
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const double vector3d::length() const {
    return sqrt(dot_product(*this, *this));
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const vector3d vector3d::normalize() const {
    return *this/this->length();
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const vector3d vector3d::cross_product(const vector3d &v1, const vector3d &v2) {
    return vector3d(v1.y*v2.z - v1.z*v2.y,
                    v1.z*v2.x - v1.x*v2.z,
                    v1.x*v2.y - v1.y*v2.x);
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const double vector3d::dot_product(const vector3d &v1, const vector3d &v2) {
    return v1.x*v2.x + v1.y*v2.y + v1.z*v2.z;
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const vector3d operator+(const vector3d &v1, const vector3d &v2) {
    return vector3d(v1.x + v2.x, v1.y + v2.y, v1.z + v2.z);
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const vector3d operator-(const vector3d &v1, const vector3d &v2) {
    return vector3d(v1.x - v2.x, v1.y - v2.y, v1.z - v2.z);
}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const vector3d operator/(const vector3d &v1, const double d) {
    return vector3d(v1.x/d, v1.y/d, v1.z/d);
}