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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | // 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: 5.0.0 (2010/01/01)
#ifndef WM5ARC2_H
#define WM5ARC2_H
#include "Wm5MathematicsLIB.h"
#include "Wm5Vector2.h"
namespace Wm5
{
template <typename Real>
class Arc2
{
public:
// The arc is defined by two points End0 and End1 on the circle so that
// End1 is obtained from End0 by traversing counterclockwise. The
// application is responsible for ensuring that End0 and End1 are on the
// circle and that they are properly ordered.
// Construction and destruction.
Arc2 (); // uninitialized
~Arc2 ();
Arc2 (const Vector2<Real>& center, Real radius,
const Vector2<Real>& end0, const Vector2<Real>& end1);
// Test whether P is on the arc. The application must ensure that P is on
// the circle; that is, |P-C| = R. This test works for any angle between
// B-C and A-C, not just those between 0 and pi radians.
bool Contains (const Vector2<Real>& p) const;
Vector2<Real> Center;
Real Radius;
Vector2<Real> End0, End1;
};
#include "Wm5Arc2.inl"
typedef Arc2<float> Arc2f;
typedef Arc2<double> Arc2d;
}
#endif
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