getTriangleListAsync method

Future<List<Vec6f>> getTriangleListAsync()

Returns a list of all triangles.

The function gives each triangle as a 6 numbers vector, where each two are one of the triangle vertices. i.e. p1_x = v0, p1_y = v1, p2_x = v2, p2_y = v3, p3_x = v4, p3_y = v5.

https://docs.opencv.org/4.x/df/dbf/classcv_1_1Subdiv2D.html#a26bfe32209bc8ae9ecc53e93da01e466

Implementation

Future<List<Vec6f>> getTriangleListAsync() async {
  final pv = calloc<ffi.Pointer<cvg.Vec6f>>();
  final psize = calloc<ffi.Size>();
  return cvRunAsync0(
    (callback) => cimgproc.cv_Subdiv2D_getTriangleList(ref, pv, psize, callback),
    (c) {
      final rval = List.generate(psize.value, (i) {
        final v = pv.value[i];
        return Vec6f(v.val1, v.val2, v.val3, v.val4, v.val5, v.val6);
      });
      calloc.free(psize);
      calloc.free(pv);
      return c.complete(rval);
    },
  );
}