lwpoly_contains_point()

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

Definition at line 532 of file lwpoly.c.

{
        uint32_t i;
        int t;
 
        if ( lwpoly_is_empty(poly) )
                return LW_OUTSIDE;
 
        t = ptarray_contains_point(poly->rings[0], pt);
 
        if (t == LW_INSIDE)
        {
                for (i = 1; i < poly->nrings; i++)
                {
                        t = ptarray_contains_point(poly->rings[i], pt);
                        if (t == LW_INSIDE)
                                return LW_OUTSIDE;
                        if (t == LW_BOUNDARY)
                        {
                                return LW_BOUNDARY;
                        }
                }
                return LW_INSIDE;
        }
        else
                return t;
}

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

Referenced by lwgeom_solid_contains_lwgeom().

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