I wish to use pgfdeclareshape draw a file archive shape.

    \foreach \i in {center,north,south,east,west} {
    \anchor{text} {
        % store lower right in xa/ya and upper right in xb/yb
        \southwest \pgf@xa=\pgf@x \pgf@ya=\pgf@y
        \northeast \pgf@xb=\pgf@x \pgf@yb=\pgf@y
        % construct main path
        % my code
        \foreach \i [evaluate=\i as \j using int(\i*2)] in {1,...,2} {
            \pgf@xd=\pgf@xg \advance\pgf@xd by \j pt
            \pgf@yd=\pgf@yg \advance\pgf@yd by \j pt
            \pgf@xe=\pgf@xh \advance\pgf@xe by \j pt
            \pgf@ye=\pgf@yh \advance\pgf@ye by \j pt
            % add line
    \node[draw,mrects,minimum width=6em,minimum height=2em] (N1) {hello world};

enter image description here

But two issues need your help:

  1. The text not at the center.
  2. The north west and south east corner lines crossed together.sounds line the assignment at the end of foreach loop doesn't work.
  • I would be very careful with using a \foreach loop in a shape declaration. If you use the thing in another foreach loop over \i you will get even more surprised than you already are. – marmot Jan 11 at 19:23
  • 1
    do you look 69.3.2 Copy Shadows in tikz & pgf manual, pp 757 (v 3.1)? there is described double copy shadow, which seem to do what you like to achieve ... – Zarko Jan 11 at 19:25
  • duplicate?: tex.stackexchange.com/questions/316455/… – Ignasi Jan 11 at 19:38

As Zarko pointed, a double copy shadow solves your problem:

\documentclass[border=2mm, tikz]{standalone}

    \node[double copy shadow,
        minimum width=6em,
        minimum height=2em] (N1) {Hello World};

enter image description here

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