lwpoint_from_gserialized2_buffer()

static LWPOINT* lwpoint_from_gserialized2_buffer ( uint8_t *  data_ptr, lwflags_t  lwflags, size_t *  size, int32_t  srid  )

static

Definition at line 1211 of file gserialized2.c.

{
        uint8_t *start_ptr = data_ptr;
        LWPOINT *point;
        uint32_t npoints = 0;
 
        assert(data_ptr);
 
        point = (LWPOINT*)lwalloc(sizeof(LWPOINT));
        point->srid = srid;
        point->bbox = NULL;
        point->type = POINTTYPE;
        point->flags = lwflags;
 
        data_ptr += 4; /* Skip past the type. */
        npoints = gserialized2_get_uint32_t(data_ptr); /* Zero => empty geometry */
        data_ptr += 4; /* Skip past the npoints. */
 
        if (npoints > 0)
                point->point = ptarray_construct_reference_data(FLAGS_GET_Z(lwflags), FLAGS_GET_M(lwflags), 1, data_ptr);
        else
                point->point = ptarray_construct(FLAGS_GET_Z(lwflags), FLAGS_GET_M(lwflags), 0); /* Empty point */
 
        data_ptr += npoints * FLAGS_NDIMS(lwflags) * sizeof(double);
 
        if (size)
                *size = data_ptr - start_ptr;
 
        return point;
}

References LWPOINT::bbox, LWPOINT::flags, FLAGS_GET_M, FLAGS_GET_Z, FLAGS_NDIMS, gserialized2_get_uint32_t(), lwalloc(), lwflags(), LWPOINT::point, POINTTYPE, ptarray_construct(), ptarray_construct_reference_data(), LWPOINT::srid, and LWPOINT::type.

Referenced by lwgeom_from_gserialized2_buffer().

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