#include "Ray.h"

Ray::Ray()
{
}

Ray::Ray(const Vector & origin, const Vector & direction)
{
    m_origin = origin;
    m_direction = direction;
    m_direction.normalize();
}

/*
 * return a vector for the point at distance dist
 * from the ray's origin point, along its direction.
 */
Vector Ray::getPositionAt(double dist) const
{
    Vector v;
    v[0] = m_origin[0] + dist * m_direction[0];
    v[1] = m_origin[1] + dist * m_direction[1];
    v[2] = m_origin[2] + dist * m_direction[2];
    return v;
}