edge_point_on_plane()

int edge_point_on_plane	(	const GEOGRAPHIC_EDGE *	e,
		const GEOGRAPHIC_POINT *	p
	)

Returns true if the point p is on the great circle plane.

Forms the scalar triple product of A,B,p and if the volume of the resulting parallelepiped is near zero the point p is on the great circle plane.

Definition at line 775 of file lwgeodetic.c.

{
        int side = edge_point_side(e, p);
        if ( side == 0 )
                return LW_TRUE;
 
        return LW_FALSE;
}

References edge_point_side(), LW_FALSE, and LW_TRUE.

Referenced by edge_contains_point().

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