ray_2d.h

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/** @file
 *  @author Bram de Greve (bramz@users.sourceforge.net)
 *  @author Tom De Muer (tomdemuer@users.sourceforge.net)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *  
 *  The contents of this file are subject to the Common Public Attribution License 
 *  Version 1.0 (the "License"); you may not use this file except in compliance with 
 *  the License. You may obtain a copy of the License at 
 *  http://lass.sourceforge.net/cpal-license. The License is based on the 
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover 
 *  use of software over a computer network and provide for limited attribution for 
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent 
 *  with Exhibit B.
 *  
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 *  language governing rights and limitations under the License.
 *  
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *  
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *  
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2004-2007 the Initial Developer.
 *  All Rights Reserved.
 *  
 *  Contributor(s):
 *
 *  Alternatively, the contents of this file may be used under the terms of the 
 *  GNU General Public License Version 2 or later (the GPL), in which case the 
 *  provisions of GPL are applicable instead of those above.  If you wish to allow use
 *  of your version of this file only under the terms of the GPL and not to allow 
 *  others to use your version of this file under the CPAL, indicate your decision by 
 *  deleting the provisions above and replace them with the notice and other 
 *  provisions required by the GPL License. If you do not delete the provisions above,
 *  a recipient may use your version of this file under either the CPAL or the GPL.
 *  
 *  *** END LICENSE INFORMATION ***
 */


/** @class lass::prim::Ray2D
 *  @brief 2D Ray
 *  @author Bram de Greve [BdG]
 *  @date 2003
 */



#ifndef LASS_GUARDIAN_OF_INCLUSION_PRIM_RAY_2D_H
#define LASS_GUARDIAN_OF_INCLUSION_PRIM_RAY_2D_H




#include "prim_common.h"
#include "normalizing_policy.h"
#include "parameter_policy.h"
#include "point_2d.h"



namespace lass
{

namespace prim
{

template
<
    typename T,
    class NormalizingPolicy = Normalized,
    class ParameterPolicy = Bounded
>
class Ray2D
{
public:

    typedef Ray2D<T, NormalizingPolicy, ParameterPolicy> TSelf;
    typedef NormalizingPolicy TNormalizingPolicy;
    typedef ParameterPolicy TParameterPolicy;

    typedef Point2D<T> TPoint;
    typedef typename TPoint::TVector TVector;

    typedef typename TPoint::TValue TValue;
    typedef typename TPoint::TParam TParam;
    typedef typename TPoint::TReference TReference;
    typedef typename TPoint::TConstReference TConstReference;
    typedef typename TPoint::TNumTraits TNumTraits;

    enum { dimension = TPoint::dimension }; /**< number of dimensions */

    template <typename U> struct Rebind
    {
        typedef Ray2D<U, NormalizingPolicy, ParameterPolicy> Type;
    };

    // STRUCTORS

    Ray2D();
    Ray2D(const TPoint& iSupport, const TVector& iDirection);
    Ray2D(const TPoint& iSupport, const TPoint& iLookAt);

    // METHODS

    const TPoint& support() const;
    TPoint& support();

    const TVector& direction() const;
    void setDirection(const TVector& iDirection);
    void lookAt(const TPoint& iLookAt);

    const TPoint point(TParam a_t) const;
    const TValue t(const TPoint& iPoint) const;
    const TVector project(const TVector& iVector) const;
    const TVector reject(const TVector& iVector) const;
    const TVector reflect(const TVector& iVector) const;
    const TPoint project(const TPoint& iPoint) const;
    const TVector reject(const TPoint& iPoint) const;
    const TPoint reflect(const TPoint& iPoint) const;

    const Side classify(const TPoint& iPoint) const;

    const bool isValid() const;

private:

    TPoint support_;
    TVector direction_;
};



template<typename T, class NP, class PP>
std::ostream& operator<<(std::ostream& oOStream, const Ray2D<T, NP, PP>& iB);

template<typename T, class NP, class PP>
io::XmlOStream& operator<<(io::XmlOStream& oOStream, const Ray2D<T, NP, PP>& iB);



}

}

#include "ray_2d.inl"

#ifdef LASS_GUARDIAN_OF_INCLUSION_PRIM_AABB_2D_H
#   include "aabb_2d_ray_2d.h"
#endif

#ifdef LASS_GUARDIAN_OF_INCLUSION_PRIM_LINE_2D_H
#   include "line_2d_ray_2d.h"
#endif

#ifdef LASS_GUARDIAN_OF_INCLUSION_PRIM_LINE_SEGMENT_2D_H
#   include "line_segment_2d_ray_2d.h"
#endif

#ifdef LASS_GUARDIAN_OF_INCLUSION_PRIM_SIMPLE_POLYGON_2D_H
#   include "ray_2d_simple_polygon_2d.h"
#endif

#ifdef LASS_GUARDIAN_OF_INCLUSION_PRIM_TRIANGLE_2D_H
#   include "ray_2d_triangle_2d.h"
#endif

#endif