120 lines
2.2 KiB
C++
120 lines
2.2 KiB
C++
//------------------------------------------------------------------------------
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// Author: Gero Mueller <gero.mueller@cloo.de>
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// Copyright: (c) 2006 Gero Mueller
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// License: MIT License
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//------------------------------------------------------------------------------
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#ifndef BLUECORE_RAY_H
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#define BLUECORE_RAY_H
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#include "scalar.h"
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#include "vector.h"
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namespace BlueCore
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{
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template <class T>
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class RayTemplate
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{
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Vector3Template<T> point, direction;
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public:
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/**
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* normalize the vector to length 1
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*/
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inline RayTemplate()
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{
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}
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/**
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* constructor from point and direction
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*/
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template <class S>
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inline RayTemplate(
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const Vector3Template<S> &point,
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const Vector3Template<S> &direction )
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{
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this->point = point;
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this->direction = direction.normalized();
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}
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/**
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* set the point
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*/
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template <class S>
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inline setPoint( const Vector3Template<S> &point )
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{
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this->point = point;
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}
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/**
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* set the direction
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*/
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template <class S>
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inline setDirection( const Vector3Template<S> &direction )
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{
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this->direction = direction.normalized();
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}
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/**
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* get point
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*/
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inline const Vector3Template<T> &getPoint() const
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{
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return point;
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}
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/**
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* get direction
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*/
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inline const Vector3Template<T> &getDirection() const
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{
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return direction;
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}
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/**
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* checks if a point lies on the ray
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*/
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template <class S>
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inline bool contains( const Vector3Template<T> &a )
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{
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return (a - point).parallel( direction );
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}
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/**
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* calculate the distance between a point and the ray
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*/
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template <class S>
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inline T distance( const Vector3Template<S> &a ) const
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{
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T t = direction.dot( a - point );
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Vector3Template<T> b = at(t) - a;
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return b.length();
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}
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/**
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* gets the position at distance t
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*/
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template <class S>
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inline Vector3Template<S> at( const T a ) const
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{
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return Vector3Template<T>( point + direction * a );
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}
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};
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typedef RayTemplate<float> RayFloat;
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typedef RayTemplate<double> RayDouble;
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typedef RayTemplate<Scalar> Ray;
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}
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#endif
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