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%%% some macros to align objects (especially images)
%%%%%%%%% Identification Part %%%%%%%%%%%%%%%%%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{align-objs}
\RequirePackage{graphicx}
\RequirePackage{multido}
\RequirePackage{ifthen}
%%%%%%%%% Identification Part End %%%%%%%%%%%%%%
%%%%%%%%%%%%%%% Option Part %%%%%%%%%%%%%%%%%%%%
%\newboolean{llncs-opt}
%\setboolean{llncs-opt}{false}
%\DeclareOption{llncs}{\setboolean{llncs-opt}{true}}
%\ProcessOptions
%%%%%%%%%%%%%%% Option Part End %%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% includegraphics
\newcommand{\includegraphicscenter}[2][]{%
\raisebox{-0.5\height}{\includegraphics[#1]{#2}}}
\newcommand{\includegraphicsbot}[2][]{%
{\includegraphics[#1]{#2}}}
\newsavebox{\@alignepsbox}
\newlength{\@aligneps}
\newcommand{\includegraphicstop}[2][]{%
\sbox{\@alignepsbox}{\includegraphics[#1]{#2}}%
\setlength{\@aligneps}{-\ht\@alignepsbox}%
\addtolength{\@aligneps}{2ex}%
\raisebox{\@aligneps}{\usebox{\@alignepsbox}}}
%%% ------------------------------------------------------------
%%% shortcuts
\newcommand{\graw}[3][]{\includegraphicscenter[width=#2\linewidth #1]{#3}}
\newcommand{\grah}[3][]{\includegraphicscenter[height=#2\textheight #1]{#3}}
\newcommand{\gratw}[3][]{\includegraphicstop[width=#2\linewidth #1]{#3}}
\newcommand{\grath}[3][]{\includegraphicstop[height=#2\textheight #1]{#3}}
\newcommand{\grawcite}[4][]{%
\raisebox{-0.5\height}{%
\raisebox{-0.8em}{\raisebox{0.8em}{%
\includegraphics[width=#2\linewidth #1]{#3}}%
\llap{#4}}}}
\newcommand{\grahcite}[4][]{%
\raisebox{-0.5\height}{%
\raisebox{-0.8em}{\raisebox{0.8em}{%
\includegraphics[height=#2\textheight #1]{#3}}%
\llap{#4}}}}
\newcommand{\gratwcite}[4][]{%
\sbox{\@alignepsbox}{\includegraphics[width=#2\linewidth #1]{#3}}%
\setlength{\@aligneps}{-\ht\@alignepsbox}%
\addtolength{\@aligneps}{2ex}%
\raisebox{\@aligneps}{%
\raisebox{-0.8em}{\raisebox{0.8em}{%
\includegraphics[width=#2\linewidth #1]{#3}}%
\llap{#4}}}}
\newcommand{\grathcite}[4][]{%
\sbox{\@alignepsbox}{\includegraphics[height=#2\textheight #1]{#3}}%
\setlength{\@aligneps}{-\ht\@alignepsbox}%
\addtolength{\@aligneps}{2ex}%
\raisebox{\@aligneps}{%
\raisebox{-0.8em}{\raisebox{0.8em}{%
\includegraphics[height=#2\textheight #1]{#3}}%
\llap{#4}}}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% includegraphics end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zcbox
%% a box which is aligned [c], but has zero height (but width of content
%%
\newsavebox{\@zsavebox}
\newlength{\@zboxlen}
\newlength{\@zboxraise}
\newenvironment{zcbox}
{\begin{lrbox}{\@zsavebox}}
{\end{lrbox}%
\setlength{\@zboxlen}{0pt}%
\advance\@zboxlen by \wd\@zsavebox%
\parbox[c][0pt]{\@zboxlen}{\usebox{\@zsavebox}}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zcbox end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zbox
%% more general form
%%
\newenvironment{zbox}[1][c]
{\begin{lrbox}{\@zsavebox}\gdef\zboxalign{#1}}
{\end{lrbox}%
\setlength{\@zboxlen}{0pt}%
\advance\@zboxlen by \wd\@zsavebox%
\parbox[\zboxalign][0pt]{\@zboxlen}{\usebox{\@zsavebox}}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zbox end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zbox
%% zero length instead of zero height
%%
\newenvironment{zcboxlen}
{\begin{lrbox}{\@zsavebox}}
{\end{lrbox}%
\setlength{\@zboxlen}{0pt}%
\advance\@zboxlen by \wd\@zsavebox%
\hbox to 0pt{\hspace*{-0.5\@zboxlen}\usebox{\@zsavebox}}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zbox with raise
%% overlayed-pictures
%%
\newenvironment{ztboxraise}[1]
{\setlength{\@zboxraise}{#1}
\begin{lrbox}{\@zsavebox}}
{\end{lrbox}%
\setlength{\@zboxlen}{0pt}%
\advance\@zboxlen by \wd\@zsavebox%
\parbox[c][0pt]{\@zboxlen}{\parbox[t][0pt]{\@zboxlen}{\raisebox{\@zboxraise}{\usebox{\@zsavebox}}}}}
\newenvironment{ztb}[1]
{\setlength{\@zboxraise}{#1}
\begin{lrbox}{\@zsavebox}}
{\end{lrbox}%
\setlength{\@zboxlen}{0pt}%
\advance\@zboxlen by \wd\@zsavebox%
\parbox[c][0pt]{\@zboxlen}{\parbox[t][0pt]{\@zboxlen}{\raisebox{\@zboxraise}{\usebox{\@zsavebox}}}}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ztbox end
\newcounter{overlaygrf}
\newcounter{overlaygrffile}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% overlaygraphics[start-frame]{last-file-num}{file}{includeoptions}
%%
\newcommand{\overlaygraphics}[4][0]{
\setcounter{overlaygrf}{#1}%
\multido{\i=#1+1}{#2}{%
\stepcounter{overlaygrf}%
\rlap{\onslide<\value{overlaygrf}->{\includegraphics[#3]{#4-\i}}}}%
\stepcounter{overlaygrf}%
\onslide<\value{overlaygrf}->{\includegraphics[#3]{#4-#2}}%
}
\newcommand{\overlaygraphicscenter}[4][0]{
\setcounter{overlaygrf}{#1}%
\multido{\i=#1+1}{#2}{%
\stepcounter{overlaygrf}%
\rlap{\onslide<\value{overlaygrf}->{\includegraphicscenter[#3]{#4-\i}}}}%
\stepcounter{overlaygrf}%
\onslide<\value{overlaygrf}->{\includegraphicscenter[#3]{#4-#2}}%
}
%%% multido: first variable + increment, second number of iterations