1 files changed, 171 insertions, 0 deletions
diff --git a/shapes.tex b/shapes.tex
new file mode 100644
index 0000000..1471807
--- /dev/null
+++ b/shapes.tex
@@ -0,0 +1,171 @@
+\makeatletter
+
+\pgfdeclareshape{stop}{%
+  \savedanchor{\upperrightcorner}{
+    \setlength{\pgf@xa}{\pgfshapeminwidth}
+    \setlength{\pgf@ya}{\pgfshapeminheight}
+    \pgf@x=0.5\pgf@xa
+    \pgf@y=0.5\pgf@ya
+  }
+  \savedanchor{\lowerleftcorner}{
+    \setlength{\pgf@xa}{\pgfshapeminwidth}
+    \setlength{\pgf@ya}{\pgfshapeminheight}
+    \pgf@x=-0.5\pgf@xa
+    \pgf@y=-0.5\pgf@ya
+  }
+
+  \anchor{center}{\pgfpointorigin}
+  % \anchor{center}{\centerpoint}
+  \anchor{north east}{%
+    \upperrightcorner%
+  }
+  \anchor{north}{%
+    \upperrightcorner%
+    \pgf@x=0pt
+  }
+  \anchor{south east}{%
+    \upperrightcorner%
+    \pgf@y=-\pgf@y
+  }
+  \anchor{south west}{%
+    \lowerleftcorner%
+  }
+  \anchor{south}{%
+    \lowerleftcorner%
+    \pgf@x=0pt
+  }
+  \anchor{north west}{%
+    \upperrightcorner%
+    \pgf@x=-\pgf@x
+  }
+  \anchor{west}{%
+    \lowerleftcorner%
+    \pgf@y=0pt
+  }
+  \anchor{east}{%
+    \upperrightcorner%
+    \pgf@y=0pt
+  }
+
+  \savedanchor{\outerfirstcentersecond}{
+    \setlength{\pgf@xa}{\pgfshapeminwidth}
+    \setlength{\pgf@ya}{\pgfshapeminheight}
+    % \divide\pgf@xa by 3
+    % \divide\pgf@xa by 2
+    \pgf@x=-.5\pgf@xa
+    \advance\pgf@x by .5\pgf@ya
+    \pgf@y=\pgf@ya
+  }
+
+  \anchor{one half}{
+    \outerfirstcentersecond
+    \pgf@y=0pt
+  }
+  \anchor{two half}{
+    \outerfirstcentersecond
+    \pgf@x=-\pgf@x
+    \pgf@y=0pt
+  }
+
+  \anchor{north one half}{
+    \outerfirstcentersecond
+  }
+  \anchor{north two half}{
+    \outerfirstcentersecond
+    \pgf@x=-\pgf@x
+  }
+  \anchor{south one half}{
+    \outerfirstcentersecond
+    \pgf@y=-\pgf@y
+  }
+  \anchor{south two half}{
+    \outerfirstcentersecond
+    \pgf@x=-\pgf@x
+    \pgf@y=-\pgf@y
+  }
+
+  \savedanchor{\outerfirstquarter}{
+    \setlength{\pgf@xa}{\pgfshapeminwidth}
+    \setlength{\pgf@ya}{\pgfshapeminheight}
+    \pgf@y=\pgf@ya
+    \pgf@x=-.5\pgf@xa % We are at (shape.north west) now
+    \advance\pgf@x by .5\pgf@ya % We are at (shape.north one half) now
+    \advance\pgf@x by \pgf@ya
+  }
+
+  \anchor{two quarter}{
+    \outerfirstquarter
+    \pgf@y=0pt
+  }
+  \anchor{three quarter}{
+    \outerfirstquarter
+    \pgf@x=-\pgf@x
+    \pgf@y=0pt
+  }
+
+  \anchor{north two quarter}{
+    \outerfirstquarter
+  }
+  \anchor{south two quarter}{
+    \outerfirstquarter
+    \pgf@y=-\pgf@y
+  }
+  \anchor{north three quarter}{
+    \outerfirstquarter
+    \pgf@x=-\pgf@x
+  }
+  \anchor{south three quarter}{
+    \outerfirstquarter
+    \pgf@x=-\pgf@x
+    \pgf@y=-\pgf@y
+  }
+
+
+  \savedanchor{\outertop}{
+    \setlength{\pgf@ya}{\pgfshapeminheight}
+    \pgf@x=0pt
+    \pgf@y=1\pgf@ya
+  }
+
+  \anchor{north center}{
+    \outertop
+  }
+
+  \anchor{south center}{
+    \outertop
+    \pgf@y=-\pgf@y
+  }
+
+  \backgroundpath{
+    \pgfpathrectanglecorners{\lowerleftcorner}{\upperrightcorner}
+  }
+}
+
+\makeatother
+
+\tikzset{
+  stop/.style={
+    shape=stop,
+    color=black!30,
+    draw,
+    fill=yellow!30,
+    rounded corners=1cm,
+    minimum height=2cm,
+  },
+  stop1/.style={
+    stop,
+    minimum width=2cm,
+  },
+  stop2/.style={
+    stop,
+    minimum width=4cm,
+  },
+  stop3/.style={
+    stop,
+    minimum width=6cm,
+  },
+  stop4/.style={
+    stop,
+    minimum width=8cm,
+  },
+}