arcLength2fAsync function

Future<double> arcLength2fAsync(
  1. VecPoint2f curve,
  2. bool closed
)

ArcLength calculates a contour perimeter or a curve length.

For further details, please see:

https:///docs.opencv.org/master/d3/dc0/group__imgproc__shape.html#ga8d26483c636be6b35c3ec6335798a47c

Implementation

Future<double> arcLength2fAsync(VecPoint2f curve, bool closed) async {
  final p = calloc<ffi.Double>();
  return cvRunAsync0((callback) => cimgproc.cv_arcLength2f(curve.ref, closed, p, callback), (c) {
    final rval = p.value;
    calloc.free(p);
    return c.complete(rval);
  });
}