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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: 5.0.1 (2010/10/01)
#include "Wm5MathematicsPCH.h"
#include "Wm5DistPoint3Line3.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Real>
DistPoint3Line3<Real>::DistPoint3Line3 (const Vector3<Real>& point,
const Line3<Real>& line)
:
mPoint(&point),
mLine(&line)
{
}
//----------------------------------------------------------------------------
template <typename Real>
const Vector3<Real>& DistPoint3Line3<Real>::GetPoint () const
{
return *mPoint;
}
//----------------------------------------------------------------------------
template <typename Real>
const Line3<Real>& DistPoint3Line3<Real>::GetLine () const
{
return *mLine;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistPoint3Line3<Real>::Get ()
{
return Math<Real>::Sqrt(GetSquared());
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistPoint3Line3<Real>::GetSquared ()
{
Vector3<Real> diff = *mPoint - mLine->Origin;
mLineParameter = mLine->Direction.Dot(diff);
mClosestPoint0 = *mPoint;
mClosestPoint1 = mLine->Origin + mLineParameter*mLine->Direction;
diff = mClosestPoint1 - mClosestPoint0;
return diff.SquaredLength();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistPoint3Line3<Real>::Get (Real t, const Vector3<Real>& velocity0,
const Vector3<Real>& velocity1)
{
Vector3<Real> movedPoint = *mPoint + t*velocity0;
Vector3<Real> movedOrigin = mLine->Origin + t*velocity1;
Line3<Real> movedLine(movedOrigin, mLine->Direction);
return DistPoint3Line3<Real>(movedPoint, movedLine).Get();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistPoint3Line3<Real>::GetSquared (Real t,
const Vector3<Real>& velocity0, const Vector3<Real>& velocity1)
{
Vector3<Real> movedPoint = *mPoint + t*velocity0;
Vector3<Real> movedOrigin = mLine->Origin + t*velocity1;
Line3<Real> movedLine(movedOrigin, mLine->Direction);
return DistPoint3Line3<Real>(movedPoint, movedLine).GetSquared();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistPoint3Line3<Real>::GetLineParameter () const
{
return mLineParameter;
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Explicit instantiation.
//----------------------------------------------------------------------------
template WM5_MATHEMATICS_ITEM
class DistPoint3Line3<float>;
template WM5_MATHEMATICS_ITEM
class DistPoint3Line3<double>;
//----------------------------------------------------------------------------
}
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