lwcollection_make_geos_friendly()

LWGEOM * lwcollection_make_geos_friendly

(

LWCOLLECTION *

g

)

Definition at line 319 of file liblwgeom/lwgeom_geos_clean.c.

{
        LWGEOM** new_geoms;
        uint32_t i, new_ngeoms = 0;
        LWCOLLECTION* ret;
 
        if ( ! g->ngeoms ) {
                LWDEBUG(3, "lwcollection_make_geos_friendly: returning input untouched");
                return lwcollection_as_lwgeom(g);
        }
 
        /* enough space for all components */
        new_geoms = lwalloc(sizeof(LWGEOM*) * g->ngeoms);
 
        ret = lwalloc(sizeof(LWCOLLECTION));
        memcpy(ret, g, sizeof(LWCOLLECTION));
        ret->maxgeoms = g->ngeoms;
 
        for (i = 0; i < g->ngeoms; i++)
        {
                LWGEOM* newg = lwgeom_make_geos_friendly(g->geoms[i]);
                if (!newg) continue;
                if ( newg != g->geoms[i] ) {
                        new_geoms[new_ngeoms++] = newg;
                } else {
                        new_geoms[new_ngeoms++] = lwgeom_clone(newg);
                }
        }
 
        ret->bbox = NULL; /* recompute later... */
 
        ret->ngeoms = new_ngeoms;
        if (new_ngeoms)
                ret->geoms = new_geoms;
        else
        {
                free(new_geoms);
                ret->geoms = NULL;
                ret->maxgeoms = 0;
        }
 
        return (LWGEOM*)ret;
}

References LWCOLLECTION::bbox, free(), LWCOLLECTION::geoms, lwalloc(), lwcollection_as_lwgeom(), LWDEBUG, lwgeom_clone(), lwgeom_make_geos_friendly(), LWCOLLECTION::maxgeoms, and LWCOLLECTION::ngeoms.

Referenced by lwgeom_make_geos_friendly().

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