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-% pgf/tikz library
-% for signal flow diagrams
-%
-% Author: Dr. Karlheinz Ochs, Ruhr-University of Bochum, Germany
-% Version: 0.1
-% Date: 2007/01/05
-
-% Known bugs: - Anchors of source shape are not precisely positioned.
-% - Anchor border of source shape is a rectangle.
-% - The bounding box of standard text label is ignored.
-
-
-%
-% Styles for nodes, terminals, and operators.
-%
-% - building blocks
-\tikzstyle{block color}%
- = [draw=\blockdrawcolor,
- fill=\blockfillcolor]
-\tikzstyle{block style}%
- = [block color,
- line width=\blocklinewidth,
- text centered]
-\tikzstyle{block}%
- = [rectangle,
- block style,
- minimum width=\blockwidth,
- minimum height=\blockheight,
- text width=\blocktextwidth]
-\tikzstyle{filter}%
- = [rectangle,
- block style,
- minimum width=\filterwidth,
- minimum height=\filterheight,
- text width=\filtertextwidth]
-\tikzstyle{source}%
- = [source shape,
- operator style]
-\tikzstyle{serial parallel converter}%
- = [serial parallel converter shape,
- block style,
- minimum width=10mm,
- minimum height=20mm,
- inner sep=2mm]
-\tikzstyle{parallel serial converter}%
- = [parallel serial converter shape,
- block style,
- minimum width=10mm,
- minimum height=20mm,
- inner sep=2mm]
-\tikzstyle{symbol mapper}%
- = [symbol mapper shape,
- block style,
- text centered,
- minimum size=20mm,
- text width=18mm]
-\tikzstyle{inverse symbol mapper}%
- = [inverse symbol mapper shape,
- block style,
- text centered,
- minimum size=20mm,
- text width=18mm]
-
-
-%
-% Shape of a source.
-%
-\newbox\pgfnodeparttextbox
-\pgfdeclareshape{source shape}
-{
- \savedanchor\westpoint{
- \pgf@x=\wd\pgfnodeparttextbox%
- \advance\pgf@x by\pgfshapeouterxsep%
- \pgf@y=.5\ht\pgfnodeparttextbox%
- \advance\pgf@y by-.5\dp\pgfnodeparttextbox%
- }
- \saveddimen\radius{
- \setlength\pgf@x{\pgfshapeminwidth}
- }
- \anchor{west}{\westpoint}
- \anchor{north west}{
- \pgf@process{\westpoint}
- \advance\pgf@y by\radius
- }
- \anchor{north}{%
- \pgf@process{\westpoint}
- \pgf@xa=\radius\advance\pgf@x by+0.5\pgf@xa
- \pgf@ya=\radius\advance\pgf@y by+0.866025\pgf@ya
- }
- \anchor{north east}{%
- \pgf@process{\westpoint}
- \pgf@xa=\radius\advance\pgf@x by+0.866025\pgf@xa
- \pgf@ya=\radius\advance\pgf@y by+0.5\pgf@ya
- }
- \anchor{east}{
- \pgf@process{\westpoint}
- \advance\pgf@x by\radius
- \advance\pgf@x by0.5\pgflinewidth
- }
- \anchor{south east}{%
- \pgf@process{\westpoint}
- \pgf@xa=\radius\advance\pgf@x by+0.866025\pgf@xa
- \pgf@ya=\radius\advance\pgf@y by-0.5\pgf@ya
- }
- \anchor{south}{%
- \pgf@process{\westpoint}
- \pgf@xa=\radius\advance\pgf@x by+0.5\pgf@xa
- \pgf@ya=\radius\advance\pgf@y by-0.866025\pgf@ya
- }
- \anchor{south west}{
- \pgf@process{\westpoint}
- \advance\pgf@y by-\radius
- }
- \anchor{center}{
- \pgf@process{\westpoint}
- \pgf@xa=\radius\advance\pgf@x by+0.5\pgf@xa
- }
- % node part
- \nodeparts{text}
- \anchor{text}{
- \pgf@process{\westpoint}
- \pgf@xa=\radius
- \advance\pgf@y by-.5\ht\pgfnodeparttextbox%
- \advance\pgf@x by-\wd\pgfnodeparttextbox%
- \advance\pgf@x by-0.5mm
- }
- \anchorborder{%
- \pgf@xb=\pgf@x% xb/yb is target
- \pgf@yb=\pgf@y%
- % southwest
- \westpoint\advance\pgf@y by-\radius
- \pgf@xa=\pgf@x% xa/ya is se
- \pgf@ya=\pgf@y%
- % northeast
- \westpoint\advance\pgf@x by\radius\advance\pgf@y by\radius%
- \advance\pgf@x by-\pgf@xa%
- \advance\pgf@y by-\pgf@ya%
- \pgf@xc=.5\pgf@x% x/y is half width/height
- \pgf@yc=.5\pgf@y%
- \advance\pgf@xa by\pgf@xc% xa/ya becomes center
- \advance\pgf@ya by\pgf@yc%
- \edef\pgf@marshal{%
- \noexpand\pgfpointborderrectangle
- {\noexpand\pgfpoint{\the\pgf@xb}{\the\pgf@yb}}
- {\noexpand\pgfpoint{\the\pgf@xc}{\the\pgf@yc}}%
- }%
- \pgf@process{\pgf@marshal}%
- \advance\pgf@x by\pgf@xa%
- \advance\pgf@y by\pgf@ya%
- }
- % Background path
- \backgroundpath{
- {\pgftransformreset{\pgfnodeparttextbox}}
- \westpoint \pgf@xa=\pgf@x \pgf@ya=\pgf@y
- \advance\pgf@y by\radius
- \pgfmoveto{\pgfpoint{\pgf@x}{\pgf@y}}
- \pgfpatharc{90}{-90}{\radius}
- \pgfclosepath
- }
-}
-
-
-%
-% Shape of a serial to parallel converter.
-%
-\newbox\pgfnodepartSbox
-\newbox\pgfnodepartPbox
-\pgfdeclareshape{serial parallel converter shape}
-{
- % inherit from rectangle
- \inheritsavedanchors[from=rectangle]
- \inheritanchor[from=rectangle]{center}
- \inheritanchor[from=rectangle]{north}
- \inheritanchor[from=rectangle]{north east}
- \inheritanchor[from=rectangle]{east}
- \inheritanchor[from=rectangle]{south east}
- \inheritanchor[from=rectangle]{south}
- \inheritanchor[from=rectangle]{south west}
- \inheritanchor[from=rectangle]{west}
- \inheritanchor[from=rectangle]{north west}
- \inheritanchorborder[from=rectangle]
- \inheritanchorborder[from=rectangle]
- \inheritbackgroundpath[from=rectangle]
- % terminal anchors
- \anchor{in}{%
- \northeast
- \pgf@ya=0.5\pgf@y
- \southwest
- \pgf@y=0.5\pgf@y
- \advance\pgf@y by+\pgf@ya%
- }
- \anchor{out1}{
- \southwest
- \pgf@ya=0.9\pgf@y
- \northeast
- \pgf@y=0.1\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{out2}{
- \southwest
- \pgf@ya=0.7\pgf@y
- \northeast
- \pgf@y=0.3\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{outl}{
- \southwest
- \pgf@ya=0.1\pgf@y
- \northeast
- \pgf@y=0.9\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{dots}{
- \southwest
- \pgf@ya=0.4\pgf@y
- \northeast
- \pgf@y=0.6\pgf@y
- \advance\pgf@y by\pgf@ya%
- \setlength{\pgf@xa}{\xspace}
- \advance\pgf@x by.5\pgf@xa%
- }
- % node parts
- \nodeparts{S,P}
- \anchor{S}{
- \southwest
- \pgf@xa=\pgf@x
- \northeast
- \pgf@x=\pgf@xa
- \advance\pgf@y by-\ht\pgfnodepartSbox%
- \advance\pgf@y by-.5\dp\pgfnodepartSbox%
- \advance\pgf@x by+\pgfshapeinnerxsep%
- \advance\pgf@y by-\pgfshapeinnerysep%
- }
- \anchor{P}{
- \northeast
- \pgf@xa=\pgf@x
- \southwest
- \pgf@x=\pgf@xa
- \advance\pgf@x by-\wd\pgfnodepartPbox%
- \advance\pgf@x by-\pgfshapeinnerxsep%
- \advance\pgf@y by+\pgfshapeinnerysep%
- }
- % diagonal line S/P
- \foregroundpath{%
- \pgfpathmoveto{\pgfpointadd{\southwest}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}
- \pgfpathlineto{\pgfpointadd{\northeast}{\pgfpointscale{-1}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}}
- }
-}
-
-%
-% Shape of a parallel to serial converter.
-%
-\newbox\pgfnodepartSbox
-\newbox\pgfnodepartPbox
-\pgfdeclareshape{parallel serial converter shape}
-{
- % inherit from rectangle
- \inheritsavedanchors[from=rectangle]
- \inheritanchor[from=rectangle]{center}
- \inheritanchor[from=rectangle]{north}
- \inheritanchor[from=rectangle]{north east}
- \inheritanchor[from=rectangle]{east}
- \inheritanchor[from=rectangle]{south east}
- \inheritanchor[from=rectangle]{south}
- \inheritanchor[from=rectangle]{south west}
- \inheritanchor[from=rectangle]{west}
- \inheritanchor[from=rectangle]{north west}
- \inheritanchorborder[from=rectangle]
- \inheritanchorborder[from=rectangle]
- \inheritbackgroundpath[from=rectangle]
- % terminal anchors
- \anchor{out}{%
- \southwest
- \pgf@ya=0.5\pgf@y
- \northeast
- \pgf@y=0.5\pgf@y
- \advance\pgf@y by+\pgf@ya%
- }
- \anchor{in1}{
- \northeast
- \pgf@ya=0.1\pgf@y
- \southwest
- \pgf@y=0.9\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{in2}{
- \northeast
- \pgf@ya=0.3\pgf@y
- \southwest
- \pgf@y=0.7\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{inl}{
- \northeast
- \pgf@ya=0.9\pgf@y
- \southwest
- \pgf@y=0.1\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{dots}{
- \northeast
- \pgf@ya=0.6\pgf@y
- \southwest
- \pgf@y=0.4\pgf@y
- \advance\pgf@y by\pgf@ya%
- \setlength{\pgf@xa}{\xspace}
- \advance\pgf@x by-.5\pgf@xa%
- }
- % node parts
- \nodeparts{P,S}
- \anchor{P}{
- \southwest
- \pgf@xa=\pgf@x
- \northeast
- \pgf@x=\pgf@xa
- \advance\pgf@y by-\ht\pgfnodepartPbox%
- \advance\pgf@y by-.5\dp\pgfnodepartPbox%
- \advance\pgf@x by+\pgfshapeinnerxsep%
- \advance\pgf@y by-\pgfshapeinnerysep%
- }
- \anchor{S}{
- \northeast
- \pgf@xa=\pgf@x
- \southwest
- \pgf@x=\pgf@xa
- \advance\pgf@x by-\wd\pgfnodepartSbox%
- \advance\pgf@x by-\pgfshapeinnerxsep%
- \advance\pgf@y by+\pgfshapeinnerysep%
- }
- % diagonal line S/P
- \foregroundpath{%
- \pgfpathmoveto{\pgfpointadd{\southwest}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}
- \pgfpathlineto{\pgfpointadd{\northeast}{\pgfpointscale{-1}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}}
- }
-}
-
-
-%
-% Shape of a symbol mapper.
-%
-\pgfdeclareshape{symbol mapper shape}
-{
- % rectangle anchors
- \inheritsavedanchors[from=rectangle]
- \inheritanchor[from=rectangle]{center}
- \inheritanchor[from=rectangle]{north}
- \inheritanchor[from=rectangle]{north east}
- \inheritanchor[from=rectangle]{east}
- \inheritanchor[from=rectangle]{south east}
- \inheritanchor[from=rectangle]{south}
- \inheritanchor[from=rectangle]{south west}
- \inheritanchor[from=rectangle]{west}
- \inheritanchor[from=rectangle]{north west}
- \inheritanchorborder[from=rectangle]
- % terminal anchors
- \anchor{out}{%
- \southwest
- \pgf@ya=0.5\pgf@y
- \northeast
- \pgf@y=0.5\pgf@y
- \advance\pgf@y by+\pgf@ya%
- }
- \anchor{in1}{
- \northeast
- \pgf@ya=0.1\pgf@y
- \southwest
- \pgf@y=0.9\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{in2}{
- \northeast
- \pgf@ya=0.3\pgf@y
- \southwest
- \pgf@y=0.7\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{dots}{
- \northeast
- \pgf@ya=0.6\pgf@y
- \southwest
- \pgf@y=0.4\pgf@y
- \advance\pgf@y by\pgf@ya%
- \setlength{\pgf@xa}{\xspace}
- \advance\pgf@x by-.5\pgf@xa%
- }
- \anchor{inl}{
- \northeast
- \pgf@ya=0.9\pgf@y
- \southwest
- \pgf@y=0.1\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- % rectangle shaped frame
- \backgroundpath{
- \pgfpathrectanglecorners
- {\pgfpointadd{\southwest}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}
- {\pgfpointadd{\northeast}{\pgfpointscale{-1}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}}
- }
-
- \inheritbackgroundpath[from=rectangle]
-}
-
-
-%
-% Shape of an inverse symbol mapper.
-%
-\pgfdeclareshape{inverse symbol mapper shape}
-{
- % rectangle anchors
- \inheritsavedanchors[from=rectangle]
- \inheritanchor[from=rectangle]{center}
- \inheritanchor[from=rectangle]{north}
- \inheritanchor[from=rectangle]{north east}
- \inheritanchor[from=rectangle]{east}
- \inheritanchor[from=rectangle]{south east}
- \inheritanchor[from=rectangle]{south}
- \inheritanchor[from=rectangle]{south west}
- \inheritanchor[from=rectangle]{west}
- \inheritanchor[from=rectangle]{north west}
- \inheritanchorborder[from=rectangle]
- % terminal anchors
- \anchor{in}{%
- \northeast
- \pgf@ya=0.5\pgf@y
- \southwest
- \pgf@y=0.5\pgf@y
- \advance\pgf@y by+\pgf@ya%
- }
- \anchor{out1}{
- \southwest
- \pgf@ya=0.9\pgf@y
- \northeast
- \pgf@y=0.1\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{out2}{
- \southwest
- \pgf@ya=0.7\pgf@y
- \northeast
- \pgf@y=0.3\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{outl}{
- \southwest
- \pgf@ya=0.1\pgf@y
- \northeast
- \pgf@y=0.9\pgf@y
- \advance\pgf@y by\pgf@ya%
- }
- \anchor{dots}{
- \southwest
- \pgf@ya=0.4\pgf@y
- \northeast
- \pgf@y=0.6\pgf@y
- \advance\pgf@y by\pgf@ya%
- \setlength{\pgf@xa}{\xspace}
- \advance\pgf@x by.5\pgf@xa%
- }
- % rectangle shaped frame
- \backgroundpath{
- \pgfpathrectanglecorners
- {\pgfpointadd{\southwest}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}
- {\pgfpointadd{\northeast}{\pgfpointscale{-1}{\pgfpoint{\pgfshapeouterxsep}{\pgfshapeouterysep}}}}
- }
-
- \inheritbackgroundpath[from=rectangle]
-}
-
-\endinput