/usr/include/libwildmagic/Wm5IntrLine2Circle2.h is in libwildmagic-dev 5.13-1ubuntu3.
This file is owned by root:root, with mode 0o644.
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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 WM5INTRLINE2CIRCLE2_H
#define WM5INTRLINE2CIRCLE2_H
#include "Wm5MathematicsLIB.h"
#include "Wm5Intersector.h"
#include "Wm5Line2.h"
#include "Wm5Circle2.h"
namespace Wm5
{
template <typename Real>
class WM5_MATHEMATICS_ITEM IntrLine2Circle2
: public Intersector<Real,Vector2<Real> >
{
public:
IntrLine2Circle2 (const Line2<Real>& line,
const Circle2<Real>& circle);
// Object access.
const Line2<Real>& GetLine () const;
const Circle2<Real>& GetCircle () const;
// Static intersection query.
virtual bool Find ();
// The intersection set.
int GetQuantity () const;
const Vector2<Real>& GetPoint (int i) const;
private:
using Intersector<Real,Vector2<Real> >::IT_EMPTY;
using Intersector<Real,Vector2<Real> >::IT_POINT;
using Intersector<Real,Vector2<Real> >::mIntersectionType;
// The objects to intersect.
const Line2<Real>* mLine;
const Circle2<Real>* mCircle;
// Information about the intersection set.
int mQuantity;
Vector2<Real> mPoint[2];
public_internal:
// Shared by IntrRay2Circle2, IntrSegment2Circle2, IntrLine2Arc2,
// IntrRay2Arc2, and IntrSegment2Arc2.
static bool Find (const Vector2<Real>& origin,
const Vector2<Real>& direction, const Vector2<Real>& center,
Real radius, int& rootCount, Real t[2]);
};
typedef IntrLine2Circle2<float> IntrLine2Circle2f;
typedef IntrLine2Circle2<double> IntrLine2Circle2d;
}
#endif
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