trace function

Scalar trace(
  1. InputArray mtx
)

Trace returns the trace of a matrix.

For further details, please see: https://docs.opencv.org/master/d2/de8/group__core__array.html#ga3419ac19c7dcd2be4bd552a23e147dd8

Implementation

Scalar trace(InputArray mtx) {
  final ptr = calloc<cvg.Scalar>();
  cvRun(() => cffi.Mat_Trace(mtx.ref, ptr));
  return Scalar.fromPointer(ptr);
}