Circular_arc_2<CircularKernel>

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CGAL::Circular_arc_2<CircularKernel>

#include <CGAL/Circular_arc_2.h>

Circular_arc_2<CircularKernel> ca ( CircularKernel::Circle_2 c);

Constructs an arc from a full circle.

Circular_arc_2<CircularKernel> ca ( CircularKernel::Circle_2 c,
CircularKernel::Circular_arc_point_2 p1,
CircularKernel::Circular_arc_point_2 p2);

Constructs the circular arc supported by c, that is oriented counterclockwise, whose source is p1 and whose target is p2.

Precondition:

p1 and p2 lie on c.

CircularKernel::Circle_2

ca.supporting_circle ()

A circular arc is supposed to be oriented counterclockwise, from source to target.

CircularKernel::Circular_arc_point_2
	ca.source ()
CircularKernel::Circular_arc_point_2
	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:

CircularKernel::Circular_arc_point_2

ca.left ()

Precondition:

ca.is_x_monotone().

CircularKernel::Circular_arc_point_2

ca.right ()

Precondition:

ca.is_x_monotone().

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