lwpolygon_calculate_gbox_geodetic()

static int lwpolygon_calculate_gbox_geodetic ( const LWPOLY *  poly, GBOX *  gbox  )

static

Definition at line 2940 of file lwgeodetic.c.

References GBOX::flags, gbox_check_poles(), gbox_duplicate(), gbox_merge(), LW_FAILURE, LW_FALSE, LW_SUCCESS, LW_TRUE, LWPOLY::nrings, ptarray_calculate_gbox_geodetic(), and LWPOLY::rings.

Referenced by lwgeom_calculate_gbox_geodetic().

{
        GBOX ringbox;
        int i;
        int first = LW_TRUE;
        assert(poly);
        if ( poly->nrings == 0 )
                return LW_FAILURE;
        ringbox.flags = gbox->flags;
        for ( i = 0; i < poly->nrings; i++ )
        {
                if ( ptarray_calculate_gbox_geodetic(poly->rings[i], &ringbox) == LW_FAILURE )
                        return LW_FAILURE;
                if ( first )
                {
                        gbox_duplicate(&ringbox, gbox);
                        first = LW_FALSE;
                }
                else
                {
                        gbox_merge(&ringbox, gbox);
                }
        }

        /* If the box wraps a poly, push that axis to the absolute min/max as appropriate */
        gbox_check_poles(gbox);

        return LW_SUCCESS;
}

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