lwpoly_contains_point()

int lwpoly_contains_point	(	const LWPOLY *	poly,
		const POINT2D *	pt
	)

Definition at line 622 of file lwpoly.c.

References LW_FALSE, LW_INSIDE, LW_OUTSIDE, LW_TRUE, lwpoly_is_empty(), LWPOLY::nrings, ptarray_contains_point(), and LWPOLY::rings.

{
        int i;

        if ( lwpoly_is_empty(poly) )
                return LW_FALSE;

        if ( ptarray_contains_point(poly->rings[0], pt) == LW_OUTSIDE )
                return LW_FALSE;

        for ( i = 1; i < poly->nrings; i++ )
        {
                if ( ptarray_contains_point(poly->rings[i], pt) == LW_INSIDE )
                        return LW_FALSE;
        }
        return LW_TRUE;
}

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