You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: atrialscar.m
    path of file: ./repos/segment-open/source
    
    the code of the file until where you have to start completion: function [varargout] = atrialscar(varargin)
%Module for atrial scar quantification.

%Einar Heiberg

macro_helper(varargin{:});
[varargout{1:nargout}] = feval(varargin{:}); % FEVAL switchyard

%Todo:
%- resample DATA.NumPoints
%- data summary (before visualization)
%- auto scar
%

    
function visualize_Callback %#ok<DEFNU>
%---------------------------
%Plots a 3D model of the atrial with colored surface with scar

global SET NO

if isempty(SET(NO).AtrialScar)
  myfailed('No Atrial Scar data found.');
  return;
end

%Extract data
tf = SET(NO).CurrentTimeFrame;
x = SET(NO).RVEndoX;
y = SET(NO).RVEndoY;

if isempty(x)
  myfailed('Need delineation using RV Endo tool');
  return
end