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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.2 (2012/11/22)
#include "Wm5MathematicsPCH.h"
#include "Wm5DistRay3Rectangle3.h"
#include "Wm5DistLine3Rectangle3.h"
#include "Wm5DistPoint3Rectangle3.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Real>
DistRay3Rectangle3<Real>::DistRay3Rectangle3 (const Ray3<Real>& ray,
const Rectangle3<Real>& rectangle)
:
mRay(&ray),
mRectangle(&rectangle)
{
}
//----------------------------------------------------------------------------
template <typename Real>
const Ray3<Real>& DistRay3Rectangle3<Real>::GetRay () const
{
return *mRay;
}
//----------------------------------------------------------------------------
template <typename Real>
const Rectangle3<Real>& DistRay3Rectangle3<Real>::GetRectangle () const
{
return *mRectangle;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistRay3Rectangle3<Real>::Get ()
{
return Math<Real>::Sqrt(GetSquared());
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistRay3Rectangle3<Real>::GetSquared ()
{
Line3<Real> line(mRay->Origin, mRay->Direction);
DistLine3Rectangle3<Real> queryLR(line, *mRectangle);
Real sqrDist = queryLR.GetSquared();
mRayParameter = queryLR.GetLineParameter();
if (mRayParameter >= (Real)0)
{
mClosestPoint0 = queryLR.GetClosestPoint0();
mClosestPoint1 = queryLR.GetClosestPoint1();
mRectCoord[0] = queryLR.GetRectangleCoordinate(0);
mRectCoord[1] = queryLR.GetRectangleCoordinate(1);
}
else
{
mClosestPoint0 = mRay->Origin;
DistPoint3Rectangle3<Real> queryPR(mClosestPoint0, *mRectangle);
sqrDist = queryPR.GetSquared();
mClosestPoint1 = queryPR.GetClosestPoint1();
mRayParameter = (Real)0;
mRectCoord[0] = queryPR.GetRectangleCoordinate(0);
mRectCoord[1] = queryPR.GetRectangleCoordinate(1);
}
return sqrDist;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistRay3Rectangle3<Real>::Get (Real t,
const Vector3<Real>& velocity0, const Vector3<Real>& velocity1)
{
Vector3<Real> movedOrigin = mRay->Origin + t*velocity0;
Vector3<Real> movedCenter = mRectangle->Center + t*velocity1;
Ray3<Real> movedRay(movedOrigin, mRay->Direction);
Rectangle3<Real> movedRectangle(movedCenter, mRectangle->Axis,
mRectangle->Extent);
return DistRay3Rectangle3<Real>(movedRay, movedRectangle).Get();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistRay3Rectangle3<Real>::GetSquared (Real t,
const Vector3<Real>& velocity0, const Vector3<Real>& velocity1)
{
Vector3<Real> movedOrigin = mRay->Origin + t*velocity0;
Vector3<Real> movedCenter = mRectangle->Center + t*velocity1;
Ray3<Real> movedRay(movedOrigin, mRay->Direction);
Rectangle3<Real> movedRectangle(movedCenter, mRectangle->Axis,
mRectangle->Extent);
return DistRay3Rectangle3<Real>(movedRay, movedRectangle).GetSquared();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistRay3Rectangle3<Real>::GetRayParameter () const
{
return mRayParameter;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistRay3Rectangle3<Real>::GetRectangleCoordinate (int i) const
{
return mRectCoord[i];
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Explicit instantiation.
//----------------------------------------------------------------------------
template WM5_MATHEMATICS_ITEM
class DistRay3Rectangle3<float>;
template WM5_MATHEMATICS_ITEM
class DistRay3Rectangle3<double>;
//----------------------------------------------------------------------------
}
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