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#include <CGAL/Circular_arc_2.h>
| Circular_arc_2<CircularKernel> ca ( Circle_2<CircularKernel> c); | |||
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Constructs an arc from a full circle.
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Constructs the circular arc supported by c, whose source is
p and whose target is q when traversing the circle in
counterclockwise direction.
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| Circular_arc_2<CircularKernel> ca ( Point_2<CircularKernel> p, Point_2<CircularKernel> q, Point_2<CircularKernel> r); | |||
Constructs an arc that is supported by the circle of type
Circle_2<CircularKernel> passing through the points p,
q and r. The source and target are respectively p
and r, when traversing the supporting circle in the
counterclockwise direction.
Note that, depending on the orientation of the point triple
(p,q,r), q may not lie on the arc.
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| Circle_2<CircularKernel> | ca.supporting_circle () | |
| Point_2<CircularKernel> const& | ca.center () const | returns the center of the supporting circle. |
| CircularKernel::FT const& | ca.squared_radius () const | returns the squared radius of the supporting circle. |
A circular arc is not oriented. Still, its source and target endpoints can be defined, supposing that its supporting circle in traversed the counterclockwise direction from source to target.
| Circular_arc_point_2<CircularKernel> | ||
| ca.source () | ||
| Circular_arc_point_2<CircularKernel> | ||
| ca.target () | ||
When the methods source and target return the same point, then the arc is in fact a full circle.
When an arc is x-monotone, its left and right points can be accessed directly:
| Circular_arc_point_2<CircularKernel> | ||||
| ca.left () |
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| Circular_arc_point_2<CircularKernel> | ||||
| ca.right () |
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| Bbox_2 | ca.bbox () const | Returns a bounding box containing the arc. | ||
| bool | ca.is_x_monotone () | Tests whether the arc is x-monotone. |
| bool | ca.is_y_monotone () | Tests whether the arc is y-monotone. |
| istream& | std::istream& is >> Circular_arc_2 & ca | |
| ostream& | std::ostream& os << Circular_arc_2 ca | |
CGAL::Circular_arc_point_2<CircularKernel>
CGAL::Line_arc_2<CircularKernel>