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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 "Wm5DistSegment3Rectangle3.h"
#include "Wm5DistLine3Rectangle3.h"
#include "Wm5DistPoint3Rectangle3.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Real>
DistSegment3Rectangle3<Real>::DistSegment3Rectangle3 (
const Segment3<Real>& segment, const Rectangle3<Real>& rectangle)
:
mSegment(&segment),
mRectangle(&rectangle)
{
}
//----------------------------------------------------------------------------
template <typename Real>
const Segment3<Real>& DistSegment3Rectangle3<Real>::GetSegment () const
{
return *mSegment;
}
//----------------------------------------------------------------------------
template <typename Real>
const Rectangle3<Real>& DistSegment3Rectangle3<Real>::GetRectangle () const
{
return *mRectangle;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistSegment3Rectangle3<Real>::Get ()
{
return Math<Real>::Sqrt(GetSquared());
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistSegment3Rectangle3<Real>::GetSquared ()
{
Line3<Real> line(mSegment->Center, mSegment->Direction);
DistLine3Rectangle3<Real> queryLR(line, *mRectangle);
Real sqrDist = queryLR.GetSquared();
mSegmentParameter = queryLR.GetLineParameter();
if (mSegmentParameter >= -mSegment->Extent)
{
if (mSegmentParameter <= mSegment->Extent)
{
mClosestPoint0 = queryLR.GetClosestPoint0();
mClosestPoint1 = queryLR.GetClosestPoint1();
mRectCoord[0] = queryLR.GetRectangleCoordinate(0);
mRectCoord[1] = queryLR.GetRectangleCoordinate(1);
}
else
{
mClosestPoint0 = mSegment->P1;
DistPoint3Rectangle3<Real> queryPR(mClosestPoint0,
*mRectangle);
sqrDist = queryPR.GetSquared();
mClosestPoint1 = queryPR.GetClosestPoint1();
mSegmentParameter = mSegment->Extent;
mRectCoord[0] = queryPR.GetRectangleCoordinate(0);
mRectCoord[1] = queryPR.GetRectangleCoordinate(1);
}
}
else
{
mClosestPoint0 = mSegment->P0;
DistPoint3Rectangle3<Real> queryPR(mClosestPoint0, *mRectangle);
sqrDist = queryPR.GetSquared();
mClosestPoint1 = queryPR.GetClosestPoint1();
mSegmentParameter = -mSegment->Extent;
mRectCoord[0] = queryPR.GetRectangleCoordinate(0);
mRectCoord[1] = queryPR.GetRectangleCoordinate(1);
}
return sqrDist;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistSegment3Rectangle3<Real>::Get (Real t,
const Vector3<Real>& velocity0, const Vector3<Real>& velocity1)
{
Vector3<Real> movedCenter0 = mSegment->Center + t*velocity0;
Vector3<Real> movedCenter1 = mRectangle->Center + t*velocity1;
Segment3<Real> movedSeg(movedCenter0, mSegment->Direction,
mSegment->Extent);
Rectangle3<Real> movedRect(movedCenter1, mRectangle->Axis,
mRectangle->Extent);
return DistSegment3Rectangle3<Real>(movedSeg, movedRect).Get();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistSegment3Rectangle3<Real>::GetSquared (Real t,
const Vector3<Real>& velocity0, const Vector3<Real>& velocity1)
{
Vector3<Real> movedCenter0 = mSegment->Center + t*velocity0;
Vector3<Real> movedCenter1 = mRectangle->Center + t*velocity1;
Segment3<Real> movedSeg(movedCenter0, mSegment->Direction,
mSegment->Extent);
Rectangle3<Real> movedRect(movedCenter1, mRectangle->Axis,
mRectangle->Extent);
return DistSegment3Rectangle3<Real>(movedSeg, movedRect).GetSquared();
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistSegment3Rectangle3<Real>::GetSegmentParameter () const
{
return mSegmentParameter;
}
//----------------------------------------------------------------------------
template <typename Real>
Real DistSegment3Rectangle3<Real>::GetRectangleCoordinate (int i) const
{
return mRectCoord[i];
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Explicit instantiation.
//----------------------------------------------------------------------------
template WM5_MATHEMATICS_ITEM
class DistSegment3Rectangle3<float>;
template WM5_MATHEMATICS_ITEM
class DistSegment3Rectangle3<double>;
//----------------------------------------------------------------------------
}
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