DsePolygonIterator¶Public Functions
dse_polygon_iterator_new()¶Creates a new polygon iterator.
Returns an iterator that must be freed.
dse_polygon_iterator_free(DsePolygonIterator *iterator)¶Frees a polygon iterator instance.
iterator:
dse_polygon_iterator_reset(DsePolygonIterator *iterator, const CassValue *value)¶Resets a polygon iterator so that it can be reused to process a binary representation.
CASS_OK if successful, otherwise an error occurred.
iterator: the iterator to reset
value: binary representation of the polygon
dse_polygon_iterator_reset_with_wkt(DsePolygonIterator *iterator, const char *wkt)¶Resets a polygon iterator so that it can be reused to parse WKT.
The wkt string must remain allocated throughout the lifetime of the iterator since the iterator traverses the string without copying it.
CASS_OK if successful, otherwise an error occurred.
iterator: the iterator to reset
wkt: WKT representation of the polygon
dse_polygon_iterator_reset_with_wkt_n(DsePolygonIterator *iterator, const char *wkt, size_t wkt_length)¶Same as dse_polygon_iterator_reset_with_wkt(), but with lengths for string parameters.
The wkt string must remain allocated throughout the lifetime of the iterator since the iterator traverses the string without copying it.
CASS_OK if successful, otherwise an error occurred.
iterator: the iterator to reset
wkt: WKT representation (string) of the polygon
wkt_length: length of wkt string
dse_polygon_iterator_num_rings(const DsePolygonIterator *iterator)¶Gets the number rings in the polygon.
The number of rings in the polygon.
iterator:
dse_polygon_iterator_next_num_points(DsePolygonIterator *iterator, cass_uint32_t *num_points)¶Gets the number of points for the current ring.
CASS_OK if successful, otherwise an error occurred.
iterator:
num_points:
dse_polygon_iterator_next_point(DsePolygonIterator *iterator, cass_double_t *x, cass_double_t *y)¶Gets the next point in the current ring.
CASS_OK if successful, otherwise an error occurred.
iterator:
x:
y: