Kernel::CompareXAtY_2

Comparison_result	fo.operator() ( Kernel::Point_2 p, Kernel::Line_2 h)
		compares the $$x-coordinates of $$p and the horizontal projection of p on h; see (a) in the figure below.
Comparison_result	fo.operator() ( Kernel::Point_2 p, Kernel::Line_2 h1, Kernel::Line_2 h2)
		compares the $$x-coordinates of the horizontal projection of p on h1 and on h2; see (b) in the figure below.
Comparison_result	fo.operator() ( Kernel::Line_2 l1, Kernel::Line_2 l2, Kernel::Line_2 h)
		Let $$p be the intersection of lines $$l1 and $$l2. This function compares the $$x-coordinates of $$p and the horizontal projection of p on h; see (c) in the figure below.
Comparison_result	fo.operator() ( Kernel::Line_2 l1, Kernel::Line_2 l2, Kernel::Line_2 h1, Kernel::Line_2 h2)
		Let $$p be the intersection of lines $$l1 and $$l2. This function compares the $$x-coordinates of the horizontal projection of p on h1 and on h2; see (d) in the figure below.

Refines

See Also