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A model fo of this type must provide:
CircularKernel::Circular_arc_point_2 | ||||
fo ( CircularKernel::Circular_arc_2 c ) | ||||
Constructs the x-minimal vertex of c.
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CircularKernel::Circular_arc_point_2 | ||||
fo ( CircularKernel::Line_arc_2 l ) | ||||
Same, for a line segment. |