lwcollection_wrapx()

static LWCOLLECTION * lwcollection_wrapx ( const LWCOLLECTION *  lwcoll_in, double  cutx, double  amount  )

static

Definition at line 121 of file lwgeom_wrapx.c.

References COLLECTIONTYPE, LWCOLLECTION::geoms, lwalloc(), lwcollection_construct(), LWDEBUGF, lwerror(), lwfree(), lwgeom_free(), lwgeom_wrapx(), lwnotice(), MULTITYPE, LWCOLLECTION::ngeoms, LWCOLLECTION::srid, ovdump::type, and LWCOLLECTION::type.

Referenced by lwgeom_split_wrapx(), and lwgeom_wrapx().

{
        LWGEOM** wrap_geoms;
        LWCOLLECTION* out;
        int i;
        int outtype = lwcoll_in->type;

        wrap_geoms = lwalloc(lwcoll_in->ngeoms * sizeof(LWGEOM*));
        if ( ! wrap_geoms )
        {
                lwerror("Out of virtual memory");
                return NULL;
        }

        for (i=0; i<lwcoll_in->ngeoms; ++i)
        {
                LWDEBUGF(3, "Wrapping collection element %d", i);
                wrap_geoms[i] = lwgeom_wrapx(lwcoll_in->geoms[i], cutx, amount);
                /* an exception should prevent this from ever returning NULL */
                if ( ! wrap_geoms[i] ) {
                        lwnotice("Error wrapping geometry, cleaning up");
                        while ((--i)>=0) {
                                lwnotice("cleaning geometry %d (%p)", i, wrap_geoms[i]);
                                lwgeom_free(wrap_geoms[i]);
                        }
                        lwfree(wrap_geoms);
                        lwnotice("cleanup complete");
                        return NULL;
                }
          if ( outtype != COLLECTIONTYPE ) {
                        if ( MULTITYPE[wrap_geoms[i]->type] != outtype )
                        {
                                outtype = COLLECTIONTYPE;
                        }
                }
        }

        /* Now wrap_geoms has wrap_geoms_size geometries */
        out = lwcollection_construct(outtype, lwcoll_in->srid, NULL,
                                     lwcoll_in->ngeoms, wrap_geoms);

        return out;
}

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