UMat.fromRect constructor

UMat.fromRect(
  1. UMat umat,
  2. Rect roi
) 
UMat(const UMat& m, const Rect& roi);

https://docs.opencv.org/4.x/d7/d45/classcv_1_1UMat.html#aaa3fa04bb82fee6026cc2e85df96a796

Implementation

factory UMat.fromRect(UMat umat, Rect roi) {
  final p = calloc<cvg.UMat>();
  cvRun(() => ccore.cv_UMat_create_9(umat.ref, roi.ref, p));
  return UMat._(p);
}