lw_pt_in_seg()

int lw_pt_in_seg	(	const POINT2D *	P,
		const POINT2D *	A1,
		const POINT2D *	A2
	)

Returns true if P is between A1/A2.

Only makes sense if P has already been deterined to be on the line defined by A1/A2.

Definition at line 103 of file lwalgorithm.c.

{
        return ((A1->x <= P->x && P->x < A2->x) || (A1->x >= P->x && P->x > A2->x)) ||
               ((A1->y <= P->y && P->y < A2->y) || (A1->y >= P->y && P->y > A2->y));
}

References POINT2D::x, and POINT2D::y.

Referenced by lw_dist2d_seg_arc(), lw_pt_on_segment(), ptarray_contains_point(), ptarray_contains_point_partial(), and rect_leaf_node_segment_side().

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