/usr/include/libwildmagic/Wm5IntrHalfspace3Sphere3.h is in libwildmagic-dev 5.13-1ubuntu3.
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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 WM5INTRHALFSPACE3SPHERE3_H
#define WM5INTRHALFSPACE3SPHERE3_H
#include "Wm5MathematicsLIB.h"
#include "Wm5Intersector.h"
#include "Wm5Plane3.h"
#include "Wm5Sphere3.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 sphere and a
// halfspace. In the dynamice find query, if the sphere is already
// intersecting the halfspace, the return value is 'false'. The idea is to
// find first time of contact, in which case there is a single point of
// contacct.
namespace Wm5
{
template <typename Real>
class WM5_MATHEMATICS_ITEM IntrHalfspace3Sphere3
: public Intersector<Real,Vector3<Real> >
{
public:
IntrHalfspace3Sphere3 (const Plane3<Real>& halfspace,
const Sphere3<Real>& sphere);
// Object access.
const Plane3<Real>& GetHalfspace () const;
const Sphere3<Real>& GetSphere () const;
// Static query.
virtual bool Test ();
// 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 or a point. GetPoint() returns a
// valid result only when Find(...) returns 'true'.
const Vector3<Real>& GetPoint () const;
protected:
using Intersector<Real,Vector3<Real> >::mContactTime;
// The objects to intersect.
const Plane3<Real>* mHalfspace;
const Sphere3<Real>* mSphere;
// Information about the intersection set.
Vector3<Real> mPoint;
};
typedef IntrHalfspace3Sphere3<float> IntrHalfspace3Sphere3f;
typedef IntrHalfspace3Sphere3<double> IntrHalfspace3Sphere3d;
}
#endif
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