eigenAsync function
Eigen calculates eigenvalues and eigenvectors of a symmetric matrix.
For further details, please see: https://docs.opencv.org/master/d2/de8/group__core__array.html#ga9fa0d58657f60eaa6c71f6fbb40456e3
Implementation
Future<(bool ret, Mat eigenvalues, Mat eigenvectors)> eigenAsync(InputArray src) async =>
cvRunAsync3((callback) => ccore.core_Eigen_Async(src.ref, callback), (completer, p, p1, p2) {
final rval = p.cast<ffi.Bool>().value;
calloc.free(p);
completer.complete((rval, Mat.fromPointer(p1.cast<ccore.Mat>()), Mat.fromPointer(p2.cast<ccore.Mat>())));
});