getVertexAsync method

Future<(Point2f, int)> getVertexAsync(
  1. int vertex
)

Returns vertex location from vertex ID.

https://docs.opencv.org/4.x/df/dbf/classcv_1_1Subdiv2D.html#a5297daca30f90d1e6d0cc5a75ba76351

Implementation

Future<(Point2f rval, int firstEdge)> getVertexAsync(int vertex) async {
  final pp = calloc<cvg.CvPoint2f>();
  final p = calloc<ffi.Int>();
  return cvRunAsync0(
    (callback) => cimgproc.cv_Subdiv2D_getVertex(ref, vertex, p, pp, callback),
    (c) {
      final rval = (Point2f.fromPointer(pp), p.value);
      calloc.free(p);
      return c.complete(rval);
    },
  );
}