lwpoly_make_geos_friendly()

LWGEOM * lwpoly_make_geos_friendly

(

LWPOLY *

poly

)

Definition at line 171 of file liblwgeom/lwgeom_geos_clean.c.

{
        LWGEOM* ret;
        POINTARRAY** new_rings;
        uint32_t i;
 
        /* If the polygon has no rings there's nothing to do */
        if (!poly->nrings) return (LWGEOM*)poly;
 
        /* Allocate enough pointers for all rings */
        new_rings = lwalloc(sizeof(POINTARRAY*) * poly->nrings);
 
        /* All rings must be closed and have > 3 points */
        for (i = 0; i < poly->nrings; i++)
        {
                POINTARRAY* ring_in = poly->rings[i];
                POINTARRAY* ring_out = ring_make_geos_friendly(ring_in);
 
                if (ring_in != ring_out)
                {
                        LWDEBUGF(
                            3, "lwpoly_make_geos_friendly: ring %d cleaned, now has %d points", i, ring_out->npoints);
                        ptarray_free(ring_in);
                }
                else
                        LWDEBUGF(3, "lwpoly_make_geos_friendly: ring %d untouched", i);
 
                assert(ring_out);
                new_rings[i] = ring_out;
        }
 
        lwfree(poly->rings);
        poly->rings = new_rings;
        ret = (LWGEOM*)poly;
 
        return ret;
}

References lwalloc(), LWDEBUGF, lwfree(), POINTARRAY::npoints, LWPOLY::nrings, ptarray_free(), ring_make_geos_friendly(), and LWPOLY::rings.

Referenced by lwgeom_make_geos_friendly().

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