% TikZ and PGF 2.00
% Source: TikZ and PGF manual
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes,decorations,shadows}
\usetikzlibrary{decorations.pathmorphing}
\usetikzlibrary{decorations.shapes}
\usetikzlibrary{fadings}
\usetikzlibrary{patterns}
\usetikzlibrary{calc}



\usetikzlibrary{decorations.text}
\usetikzlibrary{decorations.footprints}
\usetikzlibrary{decorations.fractals}
\usetikzlibrary{shapes.gates.logic.IEC}
\usetikzlibrary{shapes.gates.logic.US}
\usetikzlibrary{fit,chains}
\usetikzlibrary{positioning}
\usepgflibrary{shapes}
\usetikzlibrary{scopes}


\begin{document}


\tikzset{paint/.style={ draw=#1!50!black, fill=#1!50 },
    decorate with/.style=
    {decorate,decoration={shape backgrounds,shape=#1,shape size=2mm}}}

\begin{tikzpicture}
\node [text width=2cm, decorate, decoration=saw, fill=blue!20,draw,circle]
    {Node shapes can be decorated!};
{ [xshift=2cm]
    \path [decorate,decoration={text along path,
            text={Decorations can draw text that follows an arbitrary curve}}]
            (0,0) sin (1,1) cos (2,0) sin (3,-1) cos (4,0) sin (7,-1);
}
%
{[xshift=-1.5cm,yshift=-4cm]
    \draw [decorate with=dart, paint=red] (0,1.5) to[bend left] (3,1.5);
    \draw [decorate with=diamond, paint=green] (0,1) -- (3,1);
    \draw [decorate with=rectangle, paint=blue,
        decoration={shape evenly spread=4}] (0,0.5) -- (3,0.5);
    \draw [decorate with=star, paint=yellow] (0,0) to[bend right] (3,0);
}
%
{ [xshift=2cm,yshift=-3cm,
    decoration=Koch snowflake]
    \draw decorate{ decorate{ decorate{ decorate{ (0,0) -- (3,0) }}}};
}
%
{[xshift=5.5cm,yshift=-3cm,
    decoration={footprints,foot length=10pt,stride length=20pt}]
    \fill decorate{ (0,0) to[bend left] (3.5,0)};
}
\end{tikzpicture}


\begin{tikzpicture}
\matrix[nodes={draw, fill=blue!20},
    row sep=0.3cm,column sep=0.3cm,minimum width=.875cm, minimum height=1cm] {
    \node[ellipse callout] {Callouts}; & \node [cylinder] {C}; &
    %
    \node [arrow box] {A};\\
    %
    \node[rectangle split, rectangle split parts=3, draw, text width=2.75cm]
        {Student
        \nodepart{second}
        age:int \\
        name:String
        \nodepart{third}
        getAge():int \\
        getName():String}; &
    %
    \node[nor gate IEC, draw, logic gate inputs=in] (A) {};
    \draw (A.input 1 -| -1,0) -- (A.input 1) (A.input 2 -| -1,0) -- (A.input 2)
        (A.output) -- ([xshift=0.5cm]A.output); &
    %
    \node[or gate US, draw,logic gate inputs=inini] (A) {};
    \foreach \a in {1,...,5}
        \draw (A.input \a -| -1,0) -- (A.input \a);
        \draw (A.output) -- ([xshift=0.5cm]A.output);\\
};
\end{tikzpicture}

\begin{tikzpicture}[inner sep=0pt,thick,
    dot/.style={fill=blue,circle,minimum size=3pt}]
    \draw[help lines] (0,0) grid (3,2);
    \node[dot] (a) at (1,1) {};
    \node[dot] (b) at (2,2) {};
    \node[dot] (c) at (1,2) {};
    \node[dot] (d) at (1.25,0.25) {};
    \node[dot] (e) at (1.75,1.5) {};
    \node[draw=red, fit=(a) (b) (c) (d) (e)] {box};
    \node[draw,circle,fit=(a) (b) (c) (d) (e)] {};
\end{tikzpicture}

\begin{tikzpicture}
    \node[starburst,drop shadow,fill=white,draw] {Drop shadow};
    \node[copy shadow,fill=blue!20,draw=blue,thick] at (3.5,0) {Copy shadow};
    \node[circle,circular drop shadow,fill=blue!20,draw] at (6,0) {Circular};
\end{tikzpicture}

\begin{tikzpicture}[every on chain/.style=join,every join/.style=->,
    node distance=2mm and 1cm]
    { [start chain=trunk]
        \node [on chain] {A};
        \node [on chain] {B};
        { [start branch=numbers going below] } % just a declaration,
        { [start branch=greek going above] } % we will come back later
        \node [on chain] {C};
        % Now come the branches...
        { [continue branch=numbers]
            \node [on chain] {1};
            \node [on chain] {2};
        }
        { [continue branch=greek]
            \node [on chain] {$\alpha$};
            \node [on chain] {$\beta$};
        }
    }
\end{tikzpicture}

\begin{tikzpicture}
    % Checker board
    \fill [black!20] (-1.5,-1.5) rectangle (3.5,1.5);
    \pattern [pattern=checkerboard,pattern color=black!30]
        (-1.5,-1.5) rectangle (3.5,1.5);
    \node at (0,0) [opacity=0.5,forbidden sign,line width=2ex,
        draw=red,fill=white]
        {Smoking};
    \begin{scope}[opacity=.5,transparency group]
        \node at (2,0) [forbidden sign,line width=2ex,draw=red,fill=white]
        {Smoking};
    \end{scope}
    \begin{scope}[xshift=4cm,yshift=-1.5cm,path fading=south]
        % Checker board
        \fill [black!20] (0,0) rectangle (4,3);
        \pattern [pattern=checkerboard,pattern color=black!30]
            (0,0) rectangle (4,3);
        \fill [color=blue] (0.5,1.5) rectangle +(1,1);
        \fill [color=blue,path fading=north] (2.5,1.5) rectangle +(1,1);
        \fill [color=red,path fading] (1,0.75) ellipse (.75 and .5);
        \fill [color=red] (3,0.75) ellipse (.75 and .5);
    \end{scope}
\end{tikzpicture}

\begin{tikzpicture}[every node/.style=draw]
    \draw[help lines] (0,0) grid (2,2);
    \node (some node) at (1,1) {some node};
    \node (other node) [above=1cm of some node] {\tiny above=1cm of some node};
    \draw [<->] (some node) -- (other node)
    node [midway,right,draw=none] {1cm};

    \node (X) at (0,0) {X};
    \node (a) [base right=0.5cm of X ] {a};
    \node (y) [base right=of a] {y};
\end{tikzpicture}

\begin{tikzpicture}
    { []
        \draw [help lines] (0,0) grid (3,2);
        \coordinate (a) at (1,0);
        \coordinate (b) at ($(a)+1/2*(3,3)$);
        \draw (a) -- (b);
        \coordinate (c) at ($ (a)!.25!(b) $);
        \coordinate (d) at ($ (c)!1cm!90:(b) $);
        \draw [<->] (c) -- (d) node [sloped,midway,above] {1cm};
    }
    { [xshift=4cm]
        \draw [help lines] (0,0) grid (3,2);
        \coordinate (a) at (0,1);
        \coordinate (b) at (3,2);
        \coordinate (c) at (2.5,0);
        \draw (a) -- (b) -- (c) -- cycle;
        \draw[red] (a) -- ($(b)!(a)!(c)$);
        \draw[orange] (b) -- ($(a)!(b)!(c)$);
        \draw[blue] (c) -- ($(a)!(c)!(b)$);
    }
\end{tikzpicture}


\begin{tikzpicture}
    { []
        \draw[help lines] (0,0) grid (3,2);
        \draw
            [preaction={draw,line width=4mm,blue}]
            [line width=2mm,red] (0,0) rectangle (2,2);
    }
    { [xshift=4cm]

        \draw[help lines] (0,0) grid (3,2);
        \draw
            [postaction={draw,line width=2mm,blue}]
            [line width=4mm,red,fill=white] (0,0) rectangle (2,2);
    }
\end{tikzpicture}


\end{document}