lwcompound_is_closed()

int lwcompound_is_closed

(

const LWCOMPOUND *

curve

)

Definition at line 48 of file lwcompound.c.

{
        int hasz = lwgeom_has_z(lwcompound_as_lwgeom(compound));
        if (lwgeom_is_empty(lwcompound_as_lwgeom(compound)))
                return LW_FALSE;
 
        for (uint32_t i = 0; i < compound->ngeoms; i++)
        {
                uint32_t i_end = i == 0 ? compound->ngeoms - 1 : i - 1;
                const LWLINE *geom_start = (LWLINE *)(compound->geoms[i]);
                const LWLINE *geom_end = (LWLINE *)(compound->geoms[i_end]);
                const POINTARRAY *pa_start = geom_start->points;
                const POINTARRAY *pa_end = geom_end->points;
                if (hasz)
                {
                        const POINT3D *pt_start = getPoint3d_cp(pa_start, 0);
                        const POINT3D *pt_end = getPoint3d_cp(pa_end, pa_end->npoints-1);
                        if (!p3d_same(pt_start, pt_end))
                                return LW_FALSE;
                }
                else
                {
                        const POINT2D *pt_start = getPoint2d_cp(pa_start, 0);
                        const POINT2D *pt_end = getPoint2d_cp(pa_end, pa_end->npoints-1);
                        if (!p2d_same(pt_start, pt_end))
                                return LW_FALSE;
                }
        }
 
        return LW_TRUE;
}

References LWCOMPOUND::geoms, getPoint2d_cp(), getPoint3d_cp(), LW_FALSE, LW_TRUE, lwcompound_as_lwgeom(), lwgeom_has_z(), lwgeom_is_empty(), LWCOMPOUND::ngeoms, POINTARRAY::npoints, p2d_same(), p3d_same(), and LWLINE::points.

Referenced by lwgeom_is_closed(), test_isclosed(), and wkt_parser_curvepolygon_add_ring().

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