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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 "Wm5IntrSegment3Cylinder3.h"
#include "Wm5IntrLine3Cylinder3.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Real>
IntrSegment3Cylinder3<Real>::IntrSegment3Cylinder3 (
const Segment3<Real>& segment, const Cylinder3<Real>& cylinder)
:
mSegment(&segment),
mCylinder(&cylinder)
{
}
//----------------------------------------------------------------------------
template <typename Real>
const Segment3<Real>& IntrSegment3Cylinder3<Real>::GetSegment () const
{
return *mSegment;
}
//----------------------------------------------------------------------------
template <typename Real>
const Cylinder3<Real>& IntrSegment3Cylinder3<Real>::GetCylinder () const
{
return *mCylinder;
}
//----------------------------------------------------------------------------
template <typename Real>
bool IntrSegment3Cylinder3<Real>::Find ()
{
Real t[2];
int quantity = IntrLine3Cylinder3<Real>::Find(mSegment->Center,
mSegment->Direction, *mCylinder, t);
mQuantity = 0;
for (int i = 0; i < quantity; ++i)
{
if (Math<Real>::FAbs(t[i]) <= mSegment->Extent)
{
mPoint[mQuantity++] = mSegment->Center +
t[i]*mSegment->Direction;
}
}
if (mQuantity == 2)
{
mIntersectionType = IT_SEGMENT;
}
else if (mQuantity == 1)
{
mIntersectionType = IT_POINT;
}
else
{
mIntersectionType = IT_EMPTY;
}
return mIntersectionType != IT_EMPTY;
}
//----------------------------------------------------------------------------
template <typename Real>
int IntrSegment3Cylinder3<Real>::GetQuantity () const
{
return mQuantity;
}
//----------------------------------------------------------------------------
template <typename Real>
const Vector3<Real>& IntrSegment3Cylinder3<Real>::GetPoint (int i) const
{
return mPoint[i];
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Explicit instantiation.
//----------------------------------------------------------------------------
template WM5_MATHEMATICS_ITEM
class IntrSegment3Cylinder3<float>;
template WM5_MATHEMATICS_ITEM
class IntrSegment3Cylinder3<double>;
//----------------------------------------------------------------------------
}
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