60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
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#ifndef RAY_H
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#define RAY_H RAY_H
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#include "Vector.h"
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#include <iostream>
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class Ray
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{
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public:
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Ray()
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{
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}
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Ray(const Vector & origin, const Vector & direction)
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: m_origin(origin), m_direction(direction)
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{
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m_direction.normalize();
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}
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/*
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* return a vector for the point at distance dist
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* from the ray's origin point, along its direction.
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*/
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Vector getPositionAt(double dist) const
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{
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Vector v;
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v[0] = m_origin[0] + dist * m_direction[0];
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v[1] = m_origin[1] + dist * m_direction[1];
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v[2] = m_origin[2] + dist * m_direction[2];
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return v;
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}
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Ray shift(double amt)
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{
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return Ray(getPositionAt(amt), m_direction, false);
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}
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const Vector & getOrigin() const { return m_origin; }
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const Vector & getDirection() const { return m_direction; }
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static Ray randomRay();
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Vector operator[](double dist) const { return getPositionAt(dist); }
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protected:
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Ray(const Vector & origin, const Vector & direction, bool no_norm)
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: m_origin(origin), m_direction(direction)
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{
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/* no normalize version */
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}
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Vector m_origin;
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Vector m_direction;
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};
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std::ostream & operator<<(std::ostream & out, const Ray & r);
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#endif
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