Error building Matlab_binding/fast_global_registration.
I want to get the .mexw64 files and use them in MATLAB but I failed to build one of them. I used VS 2017 and the errors it showed were something about undeclared identifiers in "fast_global_registration.cpp". I checked the file and I can find the definition of these identifiers in app.h.

I got the same error in VS2019. When I added a line "using namespace fgr;", these error disapeared . But another two error rice, "class Capp does have the menber GetTans" in line 82
change line 82 and 83 to app.OptimizePairwise(true); Eigen::Matrix4f transf = app.GetOutputTrans(); fast_global_registration.mexw64 was complied sucsessfuly.
But only the transform matrix was returned. Better to return the RMSE and overlap rate too. But i am new to FLANN and Eigen, some body else could write more return