/usr/include/libwildmagic/Wm5IntrHalfspace3Segment3.h is in libwildmagic-dev 5.13-1+b2.
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// 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)
#ifndef WM5INTRHALFSPACE3SEGMENT3_H
#define WM5INTRHALFSPACE3SEGMENT3_H
#include "Wm5MathematicsLIB.h"
#include "Wm5Intersector.h"
#include "Wm5Plane3.h"
#include "Wm5Segment3.h"
// A halfspace is the set of points on the side of a plane to which the plane
// normal points. The queries here are for intersection of a line segment and
// a halfspace. In the dynamice find query, if the segment is already
// intersecting the halfspace, the return value is 'false'. The idea is to
// find first time of contact.
namespace Wm5
{
template <typename Real>
class WM5_MATHEMATICS_ITEM IntrHalfspace3Segment3
: public Intersector<Real,Vector3<Real> >
{
public:
IntrHalfspace3Segment3 (const Plane3<Real>& halfspace,
const Segment3<Real>& segment);
// Object access.
const Plane3<Real>& GetHalfspace () const;
const Segment3<Real>& GetSegment () const;
// Static queries.
virtual bool Test ();
virtual bool Find ();
// Dynamic queries.
virtual bool Test (Real tmax, const Vector3<Real>& velocity0,
const Vector3<Real>& velocity1);
virtual bool Find (Real tmax, const Vector3<Real>& velocity0,
const Vector3<Real>& velocity1);
// The intersection set is empty, a point, or a segment. The function
// GetQuantity() returns 0, 1, or 2.
int GetQuantity () const;
const Vector3<Real>& GetPoint (int i) const;
protected:
using Intersector<Real,Vector3<Real> >::mContactTime;
// The objects to intersect.
const Plane3<Real>* mHalfspace;
const Segment3<Real>* mSegment;
// Information about the intersection set.
int mQuantity;
Vector3<Real> mPoint[2];
};
typedef IntrHalfspace3Segment3<float> IntrHalfspace3Segment3f;
typedef IntrHalfspace3Segment3<double> IntrHalfspace3Segment3d;
}
#endif
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