\documentclass[class=minimal,border=0pt,convert={size=600,outext=.png}]{standalone}
% \documentclass[class=minimal,border=0pt]{standalone}
\usepackage[scaled]{helvet}
\renewcommand*\familydefault{\sfdefault}

% ===========================================================================
% The code below (used to define the \tikzcuboid command) is copied,
% unmodified, from a tex.stackexchange.com answer by the user "Tom Bombadil":
% http://tex.stackexchange.com/a/29882/8335
%
% It is licensed under the Creative Commons Attribution-ShareAlike 3.0
% Unported license: http://creativecommons.org/licenses/by-sa/3.0/
% ===========================================================================

\usepackage[usenames,dvipsnames]{color}
\usepackage{tikz}
\usepackage{keyval}
\usepackage{ifthen}

%====================================
%emphasize vertices --> switch and emph style (e.g. thick,black)
%====================================
\makeatletter
% Standard Values for Parameters
\newcommand{\tikzcuboid@shiftx}{0}
\newcommand{\tikzcuboid@shifty}{0}
\newcommand{\tikzcuboid@dimx}{3}
\newcommand{\tikzcuboid@dimy}{3}
\newcommand{\tikzcuboid@dimz}{3}
\newcommand{\tikzcuboid@scale}{1}
\newcommand{\tikzcuboid@densityx}{1}
\newcommand{\tikzcuboid@densityy}{1}
\newcommand{\tikzcuboid@densityz}{1}
\newcommand{\tikzcuboid@rotation}{0}
\newcommand{\tikzcuboid@anglex}{0}
\newcommand{\tikzcuboid@angley}{90}
\newcommand{\tikzcuboid@anglez}{225}
\newcommand{\tikzcuboid@scalex}{1}
\newcommand{\tikzcuboid@scaley}{1}
\newcommand{\tikzcuboid@scalez}{sqrt(0.5)}
\newcommand{\tikzcuboid@linefront}{black}
\newcommand{\tikzcuboid@linetop}{black}
\newcommand{\tikzcuboid@lineright}{black}
\newcommand{\tikzcuboid@fillfront}{white}
\newcommand{\tikzcuboid@filltop}{white}
\newcommand{\tikzcuboid@fillright}{white}
\newcommand{\tikzcuboid@shaded}{N}
\newcommand{\tikzcuboid@shadecolor}{black}
\newcommand{\tikzcuboid@shadeperc}{25}
\newcommand{\tikzcuboid@emphedge}{N}
\newcommand{\tikzcuboid@emphstyle}{thick}

% Definition of Keys
\define@key{tikzcuboid}{shiftx}[\tikzcuboid@shiftx]{\renewcommand{\tikzcuboid@shiftx}{#1}}
\define@key{tikzcuboid}{shifty}[\tikzcuboid@shifty]{\renewcommand{\tikzcuboid@shifty}{#1}}
\define@key{tikzcuboid}{dimx}[\tikzcuboid@dimx]{\renewcommand{\tikzcuboid@dimx}{#1}}
\define@key{tikzcuboid}{dimy}[\tikzcuboid@dimy]{\renewcommand{\tikzcuboid@dimy}{#1}}
\define@key{tikzcuboid}{dimz}[\tikzcuboid@dimz]{\renewcommand{\tikzcuboid@dimz}{#1}}
\define@key{tikzcuboid}{scale}[\tikzcuboid@scale]{\renewcommand{\tikzcuboid@scale}{#1}}
\define@key{tikzcuboid}{densityx}[\tikzcuboid@densityx]{\renewcommand{\tikzcuboid@densityx}{#1}}
\define@key{tikzcuboid}{densityy}[\tikzcuboid@densityy]{\renewcommand{\tikzcuboid@densityy}{#1}}
\define@key{tikzcuboid}{densityz}[\tikzcuboid@densityz]{\renewcommand{\tikzcuboid@densityz}{#1}}
\define@key{tikzcuboid}{rotation}[\tikzcuboid@rotation]{\renewcommand{\tikzcuboid@rotation}{#1}}
\define@key{tikzcuboid}{anglex}[\tikzcuboid@anglex]{\renewcommand{\tikzcuboid@anglex}{#1}}
\define@key{tikzcuboid}{angley}[\tikzcuboid@angley]{\renewcommand{\tikzcuboid@angley}{#1}}
\define@key{tikzcuboid}{anglez}[\tikzcuboid@anglez]{\renewcommand{\tikzcuboid@anglez}{#1}}
\define@key{tikzcuboid}{scalex}[\tikzcuboid@scalex]{\renewcommand{\tikzcuboid@scalex}{#1}}
\define@key{tikzcuboid}{scaley}[\tikzcuboid@scaley]{\renewcommand{\tikzcuboid@scaley}{#1}}
\define@key{tikzcuboid}{scalez}[\tikzcuboid@scalez]{\renewcommand{\tikzcuboid@scalez}{#1}}
\define@key{tikzcuboid}{linefront}[\tikzcuboid@linefront]{\renewcommand{\tikzcuboid@linefront}{#1}}
\define@key{tikzcuboid}{linetop}[\tikzcuboid@linetop]{\renewcommand{\tikzcuboid@linetop}{#1}}
\define@key{tikzcuboid}{lineright}[\tikzcuboid@lineright]{\renewcommand{\tikzcuboid@lineright}{#1}}
\define@key{tikzcuboid}{fillfront}[\tikzcuboid@fillfront]{\renewcommand{\tikzcuboid@fillfront}{#1}}
\define@key{tikzcuboid}{filltop}[\tikzcuboid@filltop]{\renewcommand{\tikzcuboid@filltop}{#1}}
\define@key{tikzcuboid}{fillright}[\tikzcuboid@fillright]{\renewcommand{\tikzcuboid@fillright}{#1}}
\define@key{tikzcuboid}{shaded}[\tikzcuboid@shaded]{\renewcommand{\tikzcuboid@shaded}{#1}}
\define@key{tikzcuboid}{shadecolor}[\tikzcuboid@shadecolor]{\renewcommand{\tikzcuboid@shadecolor}{#1}}
\define@key{tikzcuboid}{shadeperc}[\tikzcuboid@shadeperc]{\renewcommand{\tikzcuboid@shadeperc}{#1}}
\define@key{tikzcuboid}{emphedge}[\tikzcuboid@emphedge]{\renewcommand{\tikzcuboid@emphedge}{#1}}
\define@key{tikzcuboid}{emphstyle}[\tikzcuboid@emphstyle]{\renewcommand{\tikzcuboid@emphstyle}{#1}}
% Commands
\newcommand{\tikzcuboid}[1]{
    \setkeys{tikzcuboid}{#1} % Process Keys passed to command
    \pgfmathsetmacro{\vectorxx}{\tikzcuboid@scalex*cos(\tikzcuboid@anglex)}
    \pgfmathsetmacro{\vectorxy}{\tikzcuboid@scalex*sin(\tikzcuboid@anglex)}
    \pgfmathsetmacro{\vectoryx}{\tikzcuboid@scaley*cos(\tikzcuboid@angley)}
    \pgfmathsetmacro{\vectoryy}{\tikzcuboid@scaley*sin(\tikzcuboid@angley)}
    \pgfmathsetmacro{\vectorzx}{\tikzcuboid@scalez*cos(\tikzcuboid@anglez)}
    \pgfmathsetmacro{\vectorzy}{\tikzcuboid@scalez*sin(\tikzcuboid@anglez)}
    \begin{scope}[xshift=\tikzcuboid@shiftx, yshift=\tikzcuboid@shifty, scale=\tikzcuboid@scale, rotate=\tikzcuboid@rotation, x={(\vectorxx,\vectorxy)}, y={(\vectoryx,\vectoryy)}, z={(\vectorzx,\vectorzy)}]
    \pgfmathsetmacro{\steppingx}{1/\tikzcuboid@densityx}
    \pgfmathsetmacro{\steppingy}{1/\tikzcuboid@densityy}
    \pgfmathsetmacro{\steppingz}{1/\tikzcuboid@densityz}
    \newcommand{\dimx}{\tikzcuboid@dimx}
    \newcommand{\dimy}{\tikzcuboid@dimy}
    \newcommand{\dimz}{\tikzcuboid@dimz}
    \pgfmathsetmacro{\secondx}{2*\steppingx}
    \pgfmathsetmacro{\secondy}{2*\steppingy}
    \pgfmathsetmacro{\secondz}{2*\steppingz}
    \foreach \x in {\steppingx,\secondx,...,\dimx}
    {   \foreach \y in {\steppingy,\secondy,...,\dimy}
        {   \pgfmathsetmacro{\lowx}{(\x-\steppingx)}
            \pgfmathsetmacro{\lowy}{(\y-\steppingy)}
            \filldraw[fill=\tikzcuboid@fillfront,draw=\tikzcuboid@linefront] (\lowx,\lowy,\dimz) -- (\lowx,\y,\dimz) -- (\x,\y,\dimz) -- (\x,\lowy,\dimz) -- cycle;

        }
    }
    \foreach \x in {\steppingx,\secondx,...,\dimx}
    {   \foreach \z in {\steppingz,\secondz,...,\dimz}
        {   \pgfmathsetmacro{\lowx}{(\x-\steppingx)}
            \pgfmathsetmacro{\lowz}{(\z-\steppingz)}
            \filldraw[fill=\tikzcuboid@filltop,draw=\tikzcuboid@linetop] (\lowx,\dimy,\lowz) -- (\lowx,\dimy,\z) -- (\x,\dimy,\z) -- (\x,\dimy,\lowz) -- cycle;
        }
    }
    \foreach \y in {\steppingy,\secondy,...,\dimy}
    {   \foreach \z in {\steppingz,\secondz,...,\dimz}
        {   \pgfmathsetmacro{\lowy}{(\y-\steppingy)}
            \pgfmathsetmacro{\lowz}{(\z-\steppingz)}
            \filldraw[fill=\tikzcuboid@fillright,draw=\tikzcuboid@lineright] (\dimx,\lowy,\lowz) -- (\dimx,\lowy,\z) -- (\dimx,\y,\z) -- (\dimx,\y,\lowz) -- cycle;
        }
    }
    \ifthenelse{\equal{\tikzcuboid@emphedge}{Y}}%
        {\draw[\tikzcuboid@emphstyle](0,\dimy,0) -- (\dimx,\dimy,0) -- (\dimx,\dimy,\dimz) -- (0,\dimy,\dimz) -- cycle;%
        \draw[\tikzcuboid@emphstyle] (0,0,\dimz) -- (0,\dimy,\dimz) -- (\dimx,\dimy,\dimz) -- (\dimx,0,\dimz) -- cycle;%
        \draw[\tikzcuboid@emphstyle](\dimx,0,0) -- (\dimx,\dimy,0) -- (\dimx,\dimy,\dimz) -- (\dimx,0,\dimz) -- cycle;%
        }%
        {}
    \end{scope}
}

\makeatother

\begin{document}

\begin{tikzpicture}
    \tikzcuboid{%
        shiftx=21cm,%
        shifty=8cm,%
        scale=1.00,%
        rotation=0,%
        densityx=2,%
        densityy=2,%
        densityz=2,%
        dimx=4,%
        dimy=3,%
        dimz=3,%
        linefront=purple!75!black,%
        linetop=purple!50!black,%
        lineright=purple!25!black,%
        fillfront=purple!25!white,%
        filltop=purple!50!white,%
        fillright=purple!75!white,%
        emphedge=Y,%
        emphstyle=ultra thick,
    }
    \tikzcuboid{%
        shiftx=21cm,%
        shifty=11.6cm,%
        scale=1.00,%
        rotation=0,%
        densityx=2,%
        densityy=2,%
        densityz=2,%
        dimx=4,%
        dimy=3,%
        dimz=3,%
        linefront=teal!75!black,%
        linetop=teal!50!black,%
        lineright=teal!25!black,%
        fillfront=teal!25!white,%
        filltop=teal!50!white,%
        fillright=teal!75!white,%
        emphedge=Y,%
        emphstyle=ultra thick,
    }
    \tikzcuboid{%
        shiftx=26.8cm,%
        shifty=8cm,%
        scale=1.00,%
        rotation=0,%
        densityx=10000,%
        densityy=2,%
        densityz=2,%
        dimx=0,%
        dimy=3,%
        dimz=3,%
        linefront=orange!75!black,%
        linetop=orange!50!black,%
        lineright=orange!25!black,%
        fillfront=orange!25!white,%
        filltop=orange!50!white,%
        fillright=orange!100!white,%
        emphedge=Y,%
        emphstyle=ultra thick,
    }
    \tikzcuboid{%
        shiftx=28.6cm,%
        shifty=8cm,%
        scale=1.00,%
        rotation=0,%
        densityx=10000,%
        densityy=2,%
        densityz=2,%
        dimx=0,%
        dimy=3,%
        dimz=3,%
        linefront=purple!75!black,%
        linetop=purple!50!black,%
        lineright=purple!25!black,%
        fillfront=purple!25!white,%
        filltop=purple!50!white,%
        fillright=red!75!white,%
        emphedge=Y,%
        emphstyle=ultra thick,
    }
    % \tikzcuboid{%
    %     shiftx=27.1cm,%
    %     shifty=10.1cm,%
    %     scale=1.00,%
    %     rotation=0,%
    %     densityx=100,%
    %     densityy=2,%
    %     densityz=100,%
    %     dimx=0,%
    %     dimy=3,%
    %     dimz=0,%
    %     emphedge=Y,%
    %     emphstyle=ultra thick,
    % }
    % \tikzcuboid{%
    %     shiftx=27.1cm,%
    %     shifty=10.1cm,%
    %     scale=1.00,%
    %     rotation=180,%
    %     densityx=100,%
    %     densityy=100,%
    %     densityz=2,%
    %     dimx=0,%
    %     dimy=0,%
    %     dimz=3,%
    %     emphedge=Y,%
    %     emphstyle=ultra thick,
    % }
    \tikzcuboid{%
        shiftx=26.8cm,%
        shifty=11.4cm,%
        scale=1.00,%
        rotation=0,%
        densityx=100,%
        densityy=2,%
        densityz=100,%
        dimx=0,%
        dimy=3,%
        dimz=0,%
        emphedge=Y,%
        emphstyle=ultra thick,
    }
    \tikzcuboid{%
        shiftx=25.3cm,%
        shifty=12.9cm,%
        scale=1.00,%
        rotation=180,%
        densityx=100,%
        densityy=100,%
        densityz=2,%
        dimx=0,%
        dimy=0,%
        dimz=3,%
        emphedge=Y,%
        emphstyle=ultra thick,
    }
    % \fill (27.1,10.1) circle[radius=2pt];
    \node [font=\fontsize{130}{100}\fontfamily{phv}\selectfont, anchor=east, text width=2cm, align=right, color=white!50!black] at (19.8,4.4) {\textbf{\emph{x}}};
    \node [font=\fontsize{130}{100}\fontfamily{phv}\selectfont, anchor=west, text width=10cm, align=left] at (20.3,4) {{array}};
\end{tikzpicture}

\end{document}
