function pooltweyepos=getTimewinsPoolEyePos(poolstackvars,poolstackepos)

opts = struct('WindowStyle','modal','Interpreter','none','Default','No');
answer = questdlg('This requires memory at runtime. Are you sure to continue?','Memory Warning','Yes','No',opts);
if strcmpi(answer,'No'); error('Aborted getting pool stack eye position (consider cleaning workspace).'); end

if nargin<2
    subjsData(1).sbdata=getSubjectData(1);
    subjsData(2).sbdata=getSubjectData(2);
    poolstackepos=getPoolStackEyePos(subjsData);
    if nargin<1
        poolstackvars=getPoolStackVars(subjsData);
    end
end

Nsns=size(poolstackepos,1);
Ntws=size(poolstackepos,2);
Ncells=arrayfun(@(sn) poolstackvars(sn).ncells, 1:Nsns);
Ntrs=arrayfun(@(sn) size(poolstackvars(sn).offer1sd,1),1:Nsns);
Ntrs12=max(Ntrs);
Ntps=[400 arrayfun(@(tw) max(arrayfun(@(sn) size(poolstackepos(sn,tw).eyePosX,2), 1:Nsns)),2:Ntws)];

pooltweyepos(Ntws).posX=[];
pooltweyepos(Ntws).posY=[];
for sn=1:Nsns
    for tw=1:Ntws
        % re-reference to 1st offer = L
        if tw==1
            curreposx=poolstackepos(sn,tw).eyePosX(:,end-400+1:end);
            curreposy=poolstackepos(sn,tw).eyePosY(:,end-400+1:end);
        else
            curreposx=poolstackepos(sn,tw).eyePosX;
            curreposy=poolstackepos(sn,tw).eyePosY;
        end
        %       is1stL=find(poolstackvars(sn).offer1sd==1);
        is1stR=find(poolstackvars(sn).offer1sd==0);
        curreposx(is1stR,:)=-curreposx(is1stR,:);
        
        [currntrs, currntps]=size(curreposx);
        pooltweyepos(tw).posX= cat(2, pooltweyepos(tw).posX, cat(1, cat(3, repmat(reshape(curreposx,[currntrs 1 currntps]),[1 Ncells(sn) 1]),...
            nan(Ntrs(sn),Ncells(sn),Ntps(tw)-currntps)), nan(Ntrs12-Ntrs(sn),Ncells(sn),Ntps(tw))));
        pooltweyepos(tw).posY= cat(2, pooltweyepos(tw).posY, cat(1, cat(3, repmat(reshape(curreposy,[currntrs 1 currntps]),[1 Ncells(sn) 1]),...
            nan(Ntrs(sn),Ncells(sn),Ntps(tw)-currntps)), nan(Ntrs12-Ntrs(sn),Ncells(sn),Ntps(tw))));
        
    end
end

end