lwmpoint_extract_points_3d()

static POINT3D* lwmpoint_extract_points_3d ( const LWMPOINT *  g, uint32_t *  ngeoms  )

static

Definition at line 134 of file lwgeom_median.c.

References getPoint3dz_p(), lwalloc(), lwcollection_getsubgeom(), lwgeom_has_z(), lwgeom_is_empty(), and POINT3D::z.

Referenced by lwmpoint_median().

{
        uint32_t i;
        uint32_t n = 0;
        int is_3d = lwgeom_has_z((LWGEOM*) g);

        POINT3D* points = lwalloc(g->ngeoms * sizeof(POINT3D));
        for (i = 0; i < g->ngeoms; i++)
        {
                LWGEOM* subg = lwcollection_getsubgeom((LWCOLLECTION*) g, i);
                if (!lwgeom_is_empty(subg))
                {
                        getPoint3dz_p(((LWPOINT*) subg)->point, 0, (POINT3DZ*) &points[n++]);
                        if (!is_3d)
                                points[n-1].z = 0.0; /* in case the getPoint functions return NaN in the future for 2d */
                }
        }

        if (ngeoms != NULL)
                *ngeoms = n;

        return points;
}

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