Can Anyone help me understanding the following code?

Hello there, I have the following code that related to the mesh split functionality. can someone help me understanding what the author exactly did in order to split the mesh components? i found the function here: https://www.mathworks.com/matlabcentral/fileexchange/27667-splitfv-split-a-mesh

function fvOut = splitFV( f, v )
%SPLITFV Splits faces and vertices into connected pieces
%   FVOUT = SPLITFV(F,V) separates disconnected pieces inside a patch defined by faces (F) and
%   vertices (V). FVOUT is a structure array with fields "faces" and "vertices". Each element of
%   this array indicates a separately connected patch.
%
%   FVOUT = SPLITFV(FV) takes in FV as a structure with fields "faces" and "vertices"
%   Copyright Sven Holcombe
%   $Date: 2010/05/19 $

%%Extract f and v
if nargin==1 && isstruct(f) && all(isfield(f,{'faces','vertices'}))
    v = f.vertices;
    f = f.faces;
elseif nargin==2
    % f and v are already defined
else
    error('splitFV:badArgs','splitFV takes a faces/vertices structure, or these fields passed individually')
end

%%Organise faces into connected fSets that share nodes
fSets = zeros(size(f,1),1,'uint32');
currentSet = 0;

while any(fSets==0)
    currentSet = currentSet + 1;
    fprintf('Connecting set #%d vertices...',currentSet);
    nextAvailFace = find(fSets==0,1,'first');
    openVertices = f(nextAvailFace,:);
    while ~isempty(openVertices)
        availFaceInds = find(fSets==0);
        [availFaceSub, ~] = find(ismember(f(availFaceInds,:), openVertices)); 
        fSets(availFaceInds(availFaceSub)) = currentSet;
        openVertices = f(availFaceInds(availFaceSub),:);
    end
    fprintf(' done! Set #%d has %d faces.\n',currentSet,nnz(fSets==currentSet));
end
numSets = currentSet;

%%Create separate faces/vertices structures for each fSet
fvOut = repmat(struct('faces',[],'vertices',[]),numSets,1);

for currentSet = 1:numSets
    setF = f(fSets==currentSet,:);
    [unqVertIds, ~, newVertIndices] = unique(setF);
    fvOut(currentSet).faces = reshape(newVertIndices,size(setF));
    fvOut(currentSet).vertices = v(unqVertIds,:);
end

[Sven]

Sana, you will need to be more specific - you haven't actually asked a question. Is there a particular part of the code that you don't understand? Do you already understand how faces and vertices are defined for a mesh? If not, you should start there.

[sana3 sal]

Yes of-course i know that , what i need to understanding what the author exactly did in order to split the mesh components? It is worthy to mention that i can understand it theoretically, but i need to understand the code itself.