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An object of type Sphere_3<Kernel> is a sphere in the
three-dimensional Euclidean space 
3. The sphere is oriented, i.e.
its boundary has clockwise or counterclockwise orientation. The
boundary splits 3 into a positive and a negative side, where the
positive side is to the left of the boundary. The boundary also
splits 3 into a bounded and an unbounded side. Note that the
sphere can be degenerated, i.e. the squared radius may be zero.
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introduces a variable c of type Sphere_3<Kernel>.
It is initialized to the sphere with center center,
squared radius squared_radius and orientation
orientation.
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introduces a variable c of type Sphere_3<Kernel>.
It is initialized to the unique sphere which passes through
the points p, q, r and s. The orientation of
the sphere is the orientation of the point quadruple p,
q, r, s.
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introduces a variable c of type Sphere_3<Kernel>.
It is initialized to the smallest sphere which passes through
the points p, q, and r. The orientation of
the sphere is o.
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introduces a variable c of type Sphere_3<Kernel>.
It is initialized to the smallest sphere which passes through
the points p and q. The orientation of
the sphere is o.
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introduces a variable c of type Sphere_3<Kernel>.
It is initialized to the sphere with center center, squared
radius zero and orientation orientation.
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introduces a variable c of type Sphere_3<Kernel>.
It is initialized to the diametral sphere of the circle.
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| returns the center of c. |
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| returns the squared radius of c. |
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| returns the orientation of c. |
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| returns true, iff c and sphere2 are equal, i.e. if they have the same center, same squared radius and same orientation. |
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| returns true, iff c and sphere2 are not equal. |
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| returns true, iff c is degenerate, i.e. if c has squared radius zero. |
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| returns either the constant ON_ORIENTED_BOUNDARY, ON_POSITIVE_SIDE, or ON_NEGATIVE_SIDE, iff p lies on the boundary, properly on the positive side, or properly on the negative side of c, resp. | ||
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| returns ON_BOUNDED_SIDE, ON_BOUNDARY, or ON_UNBOUNDED_SIDE iff p lies properly inside, on the boundary, or properly outside of c, resp. | ||
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| returns the sphere with the same center and squared radius as c but with opposite orientation. | ||
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returns the sphere obtained by applying at on c.
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| returns a bounding box containing c. | ||