Cfrgtkky

For generating nodes with the tikz package, I'd like to nest some. I've tried the environ package to convert the node command into an environment like so:

NewEnviron{NodeEnv}[2]{

    node[#1](#2){BODY};

}

This will be used in the following situation where a node containing a new tikzpicture is used:

begin{tikzpicture}

    % Adding as many nodes and paths as preferred

    % ...

    % Adding a level of nesting

    begin{NodeEnv}{NodeType}{NodeName}

        begin{tikzpicture}

            % Adding as many nodes and paths as preferred

            % ...

            % Adding a level of nesting

            begin{NodeEnv}{OtherNodeType}{OtherNodeName}

                begin{tikzpicture}

                    % Etc.

                end{tikzpicture}

            end{NodeEnv}

        end{tikzpicture}

    end{NodeEnv}

end{tikzpicture}

As I've understood from some research, is that BODY will be overwritten by nesting. I've seen something with letxBODYBODY, but that won't work when I nest the same function. Is there a solution for this? EDIT: This is not the case. BODY is not overwritten and works fine. The 'newenviron' package doesn't work in my case, but the 'environ' package does work.

(As for why I'm nesting tikzpictures: I need to group nodes together and create paths between all those groups of nodes, using the group anchors (by fitting a rectangle around the nodes.))

Not an answer, but a demonstration that you CAN save anchors in saveboxes. Remember to run it twice.

documentclass{standalone}  

usepackage{tikz}

newsavebox{tempbox}% reserve global name

begin{document}

saveboxtempbox{begin{tikzpicture}[remember picture]

  path (0,0) coordinate (A);% Note: coordinate by itself does NOT affect the bounding box

  node (B) at (1,1) {test};

end{tikzpicture}}%

begin{tikzpicture}[remember picture]

  node (C) at (0,0) {useboxtempbox};

  draw[red] (A) -- (B);

  draw[blue] (B.south west) rectangle (B.north east);

  draw[green] (C.south west) rectangle (C.north east);

end{tikzpicture}

end{document}