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Made compute_squared_smallest_orthogonal_circle_2() a kernel functor

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and documented, tested, etc. it

Previously in Alpha_shape_2
This commit is contained in:
Mael Rouxel-Labbé
2017-04-19 11:06:14 +02:00
parent e65eae4802
commit dd2e7f3a0c
11 changed files with 229 additions and 37 deletions
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Cartesian_kernel/include/CGAL/constructions/kernel_ftC2.h
+32
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@@ -475,7 +475,39 @@ radical_axisC2(const RT &px, const RT &py, const We &pw,
+RT(pw) - RT(qw);
}
template< class FT >
CGAL_KERNEL_MEDIUM_INLINE
FT
squared_radius_orthogonal_circleC2(const FT &px, const FT &py, const FT &pw,
const FT &qx, const FT &qy, const FT &qw,
const FT &rx, const FT &ry, const FT &rw)
{
FT FT4(4);
FT dpx = px - rx;
FT dpy = py - ry;
FT dqx = qx - rx;
FT dqy = qy - ry;
FT dpp = CGAL_NTS square(dpx) + CGAL_NTS square(dpy) - pw + rw;
FT dqq = CGAL_NTS square(dqx) + CGAL_NTS square(dqy) - qw + rw;
FT det0 = determinant(dpx, dpy, dqx, dqy);
FT det1 = determinant(dpp, dpy, dqq, dqy);
FT det2 = determinant(dpx, dpp, dqx, dqq);
return (CGAL_NTS square(det1) + CGAL_NTS square(det2)) /
(FT4 * CGAL_NTS square(det0)) - rw;
}
template< class FT >
CGAL_KERNEL_MEDIUM_INLINE
FT
squared_radius_smallest_orthogonal_circleC2(const FT &px, const FT &py, const FT &pw,
const FT &qx, const FT &qy, const FT &qw)
{
FT FT4(4);
FT dpz = CGAL_NTS square(px - qx) + CGAL_NTS square(py - qy);
return (CGAL_NTS square(dpz - pw + qw) / (FT4 * dpz) - qw);
}
} //namespace CGAL