RaySphereHitTest.h

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/*
 *  Copyright (C) 2010 - 2015 Leonid Kostrykin
 *
 *  Chair of Medical Engineering (mediTEC)
 *  RWTH Aachen University
 *  Pauwelsstr. 20
 *  52074 Aachen
 *  Germany
 *
 */

#ifndef RAYSPHEREHITTEST_H_6014714286
#define RAYSPHEREHITTEST_H_6014714286

#include <Carna/Carna.h>
#include <Carna/base/math.h>
#include <Carna/base/math/Ray.h>
#include <Carna/base/CarnaException.h>

namespace Carna
{

namespace base
{

namespace math
{



// ----------------------------------------------------------------------------------
// RaySphereHitTest
// ----------------------------------------------------------------------------------

template< typename VectorType, typename ScalarType >
class RaySphereHitTest
{

    bool myHitExists;
    VectorType myHitLocation;

public:

    RaySphereHitTest();

    void compute( const Ray< VectorType >& ray, const ScalarType radius );

    bool hitExists() const;

    const VectorType& hitLocation() const;

}; // RaySphereHitTest


template< typename VectorType, typename ScalarType >
RaySphereHitTest< VectorType, ScalarType >::RaySphereHitTest()
    : myHitExists( false )
{
}


template< typename VectorType, typename ScalarType >
bool RaySphereHitTest< VectorType, ScalarType >::hitExists() const
{
    return myHitExists;
}


template< typename VectorType, typename ScalarType >
const VectorType& RaySphereHitTest< VectorType, ScalarType >::hitLocation() const
{
    CARNA_ASSERT( hitExists() );
    return myHitLocation;
}


template< typename VectorType, typename ScalarType >
void RaySphereHitTest< VectorType, ScalarType >::compute( const Ray< VectorType >& ray, ScalarType radius )
{
    CARNA_ASSERT( isEqual< ScalarType >( ray.direction.norm(), 1 ) );
    CARNA_ASSERT( isEqual< ScalarType >(  planeNormal.norm(), 1 ) );
    CARNA_ASSERT( ray.direction.rows() == ray.origin.rows() && ray.origin.rows() == planeNormal.rows() );
    CARNA_ASSERT( ray.direction.cols() == ray.origin.cols() && ray.origin.cols() == planeNormal.cols() && planeNormal.cols() == 1 );

    ;
}



}  // namespace Carna :: base :: math

}  // namespace Carna :: base

}  // namespace Carna

#endif // RAYSPHEREHITTEST_H_6014714286