symEdgeAsync method
Implementation
Future<int> symEdgeAsync(int edge) async {
final p = calloc<ffi.Int>();
return cvRunAsync0((callback) => cimgproc.cv_Subdiv2D_symEdge(ref, edge, p, callback), (c) {
final rval = p.value;
calloc.free(p);
return c.complete(rval);
});
}