\tikzstyle{quanto}=[baseline=(current bounding box).east,scale=0.5,node distance=5mm]

\usetikzlibrary{calc}

\pgfdeclarelayer{background} 
\pgfdeclarelayer{foreground} 
\pgfsetlayers{background,main,foreground} 

\tikzstyle{vertex}=[circle,draw=black,thick,inner sep=0.4mm,minimum size=2.5mm]
\tikzstyle{dotted vertex}=[vertex,densely dotted]
\tikzstyle{red vertex}=[vertex,fill=red,draw=red!40!black]
\tikzstyle{green vertex}=[vertex,fill=green!50,draw=green!30!black]
\tikzstyle{black vertex}=[vertex,fill=black,draw=black]
\tikzstyle{boundary vertex}=[circle,fill=black,inner sep=0.3mm]
\tikzstyle{hadamard vertex}=[rectangle,fill=yellow,draw=yellow!30!black,execute at end node={\tiny H}]
\tikzstyle{smallhadamard vertex}=[rectangle,fill=yellow,draw=yellow!30!black,execute at end node={}]

\tikzstyle{angle}=[fill=blue!50, minimum height=5mm, right, anchor=west, rounded corners=1mm, xshift=2mm,font=\small]
\tikzstyle{angle left}=[left,anchor=east,xshift=-2mm]
\tikzstyle{angle below}=[below,anchor=north,xshift=-2mm,yshift=-2mm]
\tikzstyle{angle above}=[above,anchor=south,xshift=-2mm,yshift=2mm]

\tikzstyle{red angle}=[angle,fill=red!15]
\tikzstyle{red angle left}=[angle left,fill=red!15]
\tikzstyle{red angle below}=[angle below,fill=red!15]
\tikzstyle{red angle above}=[angle above,fill=red!15]

\tikzstyle{green angle}=[angle,fill=green!30]
\tikzstyle{green angle left}=[angle left,fill=green!30]
\tikzstyle{green angle above}=[angle above,fill=green!30]
\tikzstyle{green angle below}=[angle below,fill=green!30]

\tikzstyle{ellipses}=[execute at end node={\small{...}}]
\tikzstyle{point}=[fill=gray!30,draw=black,minimum height=5mm,rounded corners=1mm]

% shorthand names
\tikzstyle{rn}=[red vertex]
\tikzstyle{gn}=[green vertex]
\tikzstyle{bn}=[boundary vertex]
\tikzstyle{hn}=[hadamard vertex]

\tikzstyle{greenbox}=[rectangle,fill=green!30,draw=green!50!black]
\tikzstyle{bluebox}=[rectangle,fill=blue!30,draw=blue]
\tikzstyle{whitebox}=[rectangle]

\tikzstyle{nicebg}=[execute at end picture=% 
{ 
\begin{pgfonlayer}{background}
\path (current bounding box.north west)+(-0.5,0.5) node (bg1) {};
\path (current bounding box.south east)+(0.5,-0.5) node (bg2) {};
\path[fill=gray!5!white,draw=gray,rounded corners] (bg1) rectangle (bg2);
\end{pgfonlayer}
}]

\tikzstyle{bang box}=[fill=blue!20!gray!10,draw=blue!20!black]

\newcommand{\spider}[3]{\node [#1] (#2) at (#3) {};
\node [bn] (#2_d1) at ($(#3) + (-1,1)$) {};
\node [bn] (#2_d2) at ($(#3) + (-0.5,1)$) {};
\node [bn] (#2_dm) at ($(#3) + (1,1)$) {};
\node [bn] (#2_c1) at ($(#3) + (-1,-1)$) {};
\node [bn] (#2_c2) at ($(#3) + (-0.5,-1)$) {};
\node [bn] (#2_cn) at ($(#3) + (1,-1)$) {};

\node [anchor=west] at (#2_dm.east) {};
\node [anchor=west] at (#2_cn.east) {};
\node at ($(#3) + (0.2,0.7)$) {\small{...}};
\node at ($(#3) + (0.2,-0.7)$) {\small{...}};

\draw (#2)--(#2_d1) (#2)--(#2_d2) (#2)--(#2_dm);
\draw (#2)--(#2_c1) (#2)--(#2_c2) (#2)--(#2_cn);}

\newcommand{\downspider}[3]{\node [#1] (#2) at (#3) {};
\node [bn] (#2_c1) at ($(#3) + (-1,-1)$) {};
\node [bn] (#2_c2) at ($(#3) + (-0.5,-1)$) {};
\node [bn] (#2_cn) at ($(#3) +(1,-1)$) {};

\node [anchor=west] at (#2_cn.east) {};
\node at ($(#3) +(0.2,-0.7)$) {\small{...}};

\draw (#2)--(#2_c1) (#2)--(#2_c2) (#2)--(#2_cn);}

\newcommand{\upspider}[3]{\node [#1] (#2) at (#3) {};
\node [bn] (#2_d1) at ($(#3) + (-1,1)$) {};
\node [bn] (#2_d2) at ($(#3) + (-0.5,1)$) {};
\node [bn] (#2_dn) at ($(#3) + (1,1)$) {};

\node [anchor=west] at (#2_dn.east) {};
\node at ($(#3) + (0.2,0.7)$) {\small{...}};

\draw (#2)--(#2_d1) (#2)--(#2_d2) (#2)--(#2_dn);}

\newcommand{\bell}[3][\textsf{...}]{\draw (#2.#3+25) -- +(#3+25:0.5) (#2.#3-25) -- +(#3-25:0.5);
\node [anchor=#3-180,inner sep=3mm] at (#2.#3) {\small $#1$}; }

\newcommand{\zcol}{green}
\newcommand{\xcol}{red}
\newcommand{\Zcol}{Green}
\newcommand{\Xcol}{Red}

\newcommand{\quantoBNW}{%
\tikzstyle{red vertex}=[vertex,fill=black!60,draw=black]
\tikzstyle{green vertex}=[vertex,fill=white,draw=black]
\tikzstyle{red angle}=[angle,fill=gray!15,draw=gray!60]
\tikzstyle{green angle}=[angle,fill=gray!15,draw=gray!60]
\tikzstyle{point}=[fill=gray!30,draw=black,minimum height=5mm,rounded corners=1mm]
\tikzstyle{bang box}=[fill=gray!40,draw=black]
\renewcommand{\zcol}{white}
\renewcommand{\xcol}{black}
\renewcommand{\Zcol}{White}
\renewcommand{\Xcol}{Black}}