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diff --git a/Master/texmf-dist/doc/generic/pgf/text-en/pgfmanual-en-library-circuits.tex b/Master/texmf-dist/doc/generic/pgf/text-en/pgfmanual-en-library-circuits.tex
index 6290ee705d0..66bbd1e3233 100644
--- a/Master/texmf-dist/doc/generic/pgf/text-en/pgfmanual-en-library-circuits.tex
+++ b/Master/texmf-dist/doc/generic/pgf/text-en/pgfmanual-en-library-circuits.tex
@@ -7,20 +7,22 @@
%
% See the file doc/generic/pgf/licenses/LICENSE for more details.
+
\section{Circuit Libraries}
\label{section-library-circuits}
\emph{Written and documented by Till Tantau, and Mark Wibrow. Inspired
by the work of Massimo Redaelli.}
+
\subsection{Introduction}
-The circuit libraries can be used to draw different kinds of
-electrical or logical circuits. There is not a single library for
-this, but a whole hierarchy of libraries that work in concert. The
-main design goal was to create a balance between ease-of-use and
-ease-of-extending, while creating high-quality graphical
-representations of circuits.
+The circuit libraries can be used to draw different kinds of electrical or
+logical circuits. There is not a single library for this, but a whole hierarchy
+of libraries that work in concert. The main design goal was to create a balance
+between ease-of-use and ease-of-extending, while creating high-quality
+graphical representations of circuits.
+
\subsubsection{A First Example}
@@ -70,12 +72,11 @@ representations of circuits.
\end{tikzpicture}
\end{codeexample}
-An important feature of the circuit library is that the appearance of
-a circuit can be configured in general ways and that the labels are
-placed automatically by default. Here is the graphic once more,
-generated from \emph{exactly the same source code}, with only
-the options of the |{tikzpicture}| environment replaced by
-|[rotate=-90,circuit ee IEC,x=3.25cm,y=2.25cm]|:
+An important feature of the circuit library is that the appearance of a circuit
+can be configured in general ways and that the labels are placed automatically
+by default. Here is the graphic once more, generated from \emph{exactly the
+same source code}, with only the options of the |{tikzpicture}| environment
+replaced by |[rotate=-90,circuit ee IEC,x=3.25cm,y=2.25cm]|:
\begin{tikzpicture}[rotate=-90,circuit ee IEC,x=3cm,y=2.25cm]
% Let us start with some contacts:
@@ -116,90 +117,92 @@ the options of the |{tikzpicture}| environment replaced by
\subsubsection{Symbols}
-A circuit typically consists of numerous electronic elements like
-logical gates or resistors or diodes that are connected by wires. In
-\pgfname/\tikzname, we use nodes for the
-electronic elements and normal lines for the wires. \tikzname\ offers
-a large number of different ways of positioning and connecting nodes
-in general, all of which can be used here. Additionally, the
-|circuits| library defines an additional useful |to|-path that is
-particularly useful for elements like a resistor on a line.
+A circuit typically consists of numerous electronic elements like logical gates
+or resistors or diodes that are connected by wires. In \pgfname/\tikzname, we
+use nodes for the electronic elements and normal lines for the wires.
+\tikzname\ offers a large number of different ways of positioning and
+connecting nodes in general, all of which can be used here. Additionally, the
+|circuits| library defines an additional useful |to|-path that is particularly
+useful for elements like a resistor on a line.
There are many different names that are used to refer to electrical
-``elements,'' so a bit of terminology standardization is useful: We
-will call such elements \emph{symbols}. A \emph{symbol shape} is a
-\pgfname\ shape declared using the |\pgfdeclareshape| command. A
-\emph{symbol node} is a node whose shape is a symbol shape.
+``elements'', so a bit of terminology standardization is useful: We will call
+such elements \emph{symbols}. A \emph{symbol shape} is a \pgfname\ shape
+declared using the |\pgfdeclareshape| command. A \emph{symbol node} is a node
+whose shape is a symbol shape.
\subsubsection{Symbol Graphics}
-Symbols can be created by
-|\node[shape=some symbol shape]|. However, in order to represent some
-symbols correctly, just using standard \pgfname\ shapes is not
-sufficient. For instance, most symbols have a visually appealing
-``default size,'' but the size of a symbol shape depends only on the
-current values of parameters like |minimum height| or |inner xsep|.
+Symbols can be created by |\node[shape=some symbol shape]|. However, in order
+to represent some symbols correctly, just using standard \pgfname\ shapes is
+not sufficient. For instance, most symbols have a visually appealing ``default
+size'', but the size of a symbol shape depends only on the current values of
+parameters like |minimum height| or |inner xsep|.
For these reasons, the circuit libraries introduce the concept of a
-\emph{symbol graphic}. This is a style that causes a |\node| to
-not only have the correct shape, but also the correct size and the
-correct path usage. More generally, this style may set up things in any
-way so that the ``symbol looks correct''. When you write, for
-instance, |\node[diode]|, then the style called |diode graphic| is
-used, which in turn is set to something like
+\emph{symbol graphic}. This is a style that causes a |\node| to not only have
+the correct shape, but also the correct size and the correct path usage. More
+generally, this style may set up things in any way so that the ``symbol looks
+correct''. When you write, for instance, |\node[diode]|, then the style called
+|diode graphic| is used, which in turn is set to something like
|shape=diode IEC,draw,minimum height=...|.
Here is an overview of the different kinds of circuit libraries:
-
+%
\begin{itemize}
-\item The \tikzname-library |circuits| defines general keys for
- creating circuits. Mostly, these keys are useful for defining more
- specialized libraries.
-
- You normally do not use this library directly since it does not
- define any symbol graphics.
-\item The \tikzname-library |circuits.logic| defines keys for creating
- logical gates like and-gates or xor-gates. However, this library
- also does not actually define any symbol graphics; this is done by
- two sublibraries:
- \begin{itemize}
- \item The library |circuits.logic.US| defines symbol graphics that
- cause the logical gates to be rendered in the ``US-style.'' It
- includes all of the above libraries and you can use this library
- directly.
- \item The library |circuits.logic.IEC| also defines symbol graphics
- for logical gates, but it uses rectangular gates rather that the
- round US-gates. This library can coexist peacefully with the above
- library, you can change which symbol graphics are used ``on the
- fly.''
- \end{itemize}
-\item The \tikzname-library |cirucits.ee| defines keys for symbols
- from electrical engineering like resistors or capacitors. Again,
- sublibraries define the actual symbol graphics.
- \begin{itemize}
- \item The library |circuits.ee.IEC| defines symbol shapes that
- follow the IEC norm.
- \end{itemize}
-\item The \pgfname-libraries |shapes.gates.*| define (circuit) symbol
- shapes. However, you normally do not use these shapes directly,
- rather you use a style that uses an appropriate symbol graphic,
- which in turn uses one of these shapes.
+ \item The \tikzname-library |circuits| defines general keys for creating
+ circuits. Mostly, these keys are useful for defining more specialized
+ libraries.
+
+ You normally do not use this library directly since it does not define
+ any symbol graphics.
+ \item The \tikzname-library |circuits.logic| defines keys for creating
+ logical gates like and-gates or xor-gates. However, this library also
+ does not actually define any symbol graphics; this is done by two
+ sublibraries:
+ %
+ \begin{itemize}
+ \item The library |circuits.logic.US| defines symbol graphics that
+ cause the logical gates to be rendered in the ``US-style''. It
+ includes all of the above libraries and you can use this
+ library directly.
+ \item The library |circuits.logic.IEC| also defines symbol graphics
+ for logical gates, but it uses rectangular gates rather that
+ the round US-gates. This library can coexist peacefully with
+ the above library, you can change which symbol graphics are
+ used ``on the fly''.
+ \end{itemize}
+ \item The \tikzname-library |cirucits.ee| defines keys for symbols from
+ electrical engineering like resistors or capacitors. Again,
+ sublibraries define the actual symbol graphics.
+ %
+ \begin{itemize}
+ \item The library |circuits.ee.IEC| defines symbol shapes that
+ follow the IEC norm.
+ \end{itemize}
+ \item The \pgfname-libraries |shapes.gates.*| define (circuit) symbol
+ shapes. However, you normally do not use these shapes directly, rather
+ you use a style that uses an appropriate symbol graphic, which in turn
+ uses one of these shapes.
\end{itemize}
-Let us have a look at a simple example. Suppose we wish to create a
-logical circuit. Then we first have to decide which symbol graphics we
-would like to use. Suppose we wish to use the US-style, then we would
-include the library |circuits.logic.US|. If you wish to use IEC-style
-symbols, use |circuits.logic.IEC|. If you cannot decide, include both:
+Let us have a look at a simple example. Suppose we wish to create a logical
+circuit. Then we first have to decide which symbol graphics we would like to
+use. Suppose we wish to use the US-style, then we would include the library
+|circuits.logic.US|. If you wish to use IEC-style symbols, use
+|circuits.logic.IEC|. If you cannot decide, include both:
+%
\begin{codeexample}[code only]
\usetikzlibrary{circuits.logic.US,circuits.logic.IEC}
\end{codeexample}
-To create a picture that contains a US-style circuit you can now use
-the option |circuit logic US|. This will set up keys like |and gate| to
-create use an appropriate symbol graphic for rendering an |and gate|. Using the |circuit logic IEC| instead will set up |and gate| to
-use another symbol graphic.
-
+%
+To create a picture that contains a US-style circuit you can now use the option
+|circuit logic US|. This will set up keys like |and gate| to create use an
+appropriate symbol graphic for rendering an |and gate|. Using the
+|circuit logic IEC| instead will set up |and gate| to use another symbol
+graphic.
+%
\begin{codeexample}[]
\begin{tikzpicture}[circuit logic US]
\matrix[column sep=7mm]
@@ -220,7 +223,6 @@ use another symbol graphic.
\end{tikzpicture}
\end{codeexample}
-
\begin{codeexample}[]
\begin{tikzpicture}[circuit logic IEC]
\matrix[column sep=7mm]
@@ -242,19 +244,17 @@ use another symbol graphic.
\end{codeexample}
-
\subsubsection{Annotations}
-An \emph{annotation} is a little extra drawing that can be added to a
-symbol. For instance, when you add two little parallel arrows pointing
-away from some electrical element, this usually means that the element
-is light emitting.
-
-Instead of having one symbol for ``diode'' and another for ``light
-emitting diode,'' there is just one |diode| symbol, but you can add
-the |light emitting| annotation to it. This is done by passing the
-annotation as a parameter to the symbol as in the following example:
+An \emph{annotation} is a little extra drawing that can be added to a symbol.
+For instance, when you add two little parallel arrows pointing away from some
+electrical element, this usually means that the element is light emitting.
+Instead of having one symbol for ``diode'' and another for ``light emitting
+diode'', there is just one |diode| symbol, but you can add the |light emitting|
+annotation to it. This is done by passing the annotation as a parameter to the
+symbol as in the following example:
+%
\begin{codeexample}[]
\tikz [circuit ee IEC]
\draw (0,0) to [diode={light emitting}] (3,0)
@@ -262,37 +262,34 @@ annotation as a parameter to the symbol as in the following example:
\end{codeexample}
-
\subsection{The Base Circuit Library}
\begin{tikzlibrary}{circuits}
- This library is a base library that is included by other circuit
- libraries. You do not include it directly, but you will typically
- use some of the general keys, described below.
+ This library is a base library that is included by other circuit libraries.
+ You do not include it directly, but you will typically use some of the
+ general keys, described below.
\end{tikzlibrary}
\begin{key}{/tikz/circuits}
- This key should be passed as an option to a picture or a scope that
- contains a circuit. It will do some internal setups. This key is
- normally called by more specialized keys like |circuit ee IEC|.
+ This key should be passed as an option to a picture or a scope that contains
+ a circuit. It will do some internal setups. This key is normally called by
+ more specialized keys like |circuit ee IEC|.
\end{key}
-
-
\subsubsection{Symbol Size}
\begin{key}{/tikz/circuit symbol unit=\meta{dimension} (initially 7pt)}
- This dimension is a ``unit'' for the size of symbols. The libraries
- generally define the sizes of symbols relative to this
- dimension. For instance, the longer side of an inductor is, by
- default, in the IEC library equal to five times this
- \meta{dimension}. When you change this \meta{dimension}, the size of
- all symbols will automatically change accordingly.
-
- Note, that it is still possible to overwrite the size of any
- particular symbol. These settings apply only to the default sizes.
+ This dimension is a ``unit'' for the size of symbols. The libraries
+ generally define the sizes of symbols relative to this dimension. For
+ instance, the longer side of an inductor is, by default, in the IEC library
+ equal to five times this \meta{dimension}. When you change this
+ \meta{dimension}, the size of all symbols will automatically change
+ accordingly.
+ Note, that it is still possible to overwrite the size of any particular
+ symbol. These settings apply only to the default sizes.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC]
\draw (0,1) to [resistor] (3.5,1);
@@ -300,32 +297,35 @@ annotation as a parameter to the symbol as in the following example:
(0,0) to [resistor] (3.5,0);
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
\begin{stylekey}{/tikz/huge circuit symbols}
- This style sets the default circuit symbol unit to |10pt|.
+ This style sets the default circuit symbol unit to |10pt|.
\end{stylekey}
+%
\begin{stylekey}{/tikz/large circuit symbols}
- This style sets the default circuit symbol unit to |8pt|.
+ This style sets the default circuit symbol unit to |8pt|.
\end{stylekey}
+%
\begin{stylekey}{/tikz/medium circuit symbols}
- This style sets the default circuit symbol unit to |7pt|.
+ This style sets the default circuit symbol unit to |7pt|.
\end{stylekey}
+%
\begin{stylekey}{/tikz/small circuit symbols}
- This style sets the default circuit symbol unit to |6pt|.
+ This style sets the default circuit symbol unit to |6pt|.
\end{stylekey}
+%
\begin{stylekey}{/tikz/tiny circuit symbols}
- This style sets the default circuit symbol unit to |5pt|.
+ This style sets the default circuit symbol unit to |5pt|.
\end{stylekey}
-\begin{key}{/tikz/circuit symbol size=|width| \meta{width} |height|
- \meta{height}}
- This key sets |minimum height| to \meta{height} times the current
- value of the circuit symbol unit and the |minimum width| to
- \meta{width} times this value. Thus, this option can be used with a
- node command to set the size of the node as a multiple of the
- circuit symbol unit.
-
+\begin{key}{/tikz/circuit symbol size=|width| \meta{width} |height| \meta{height}}
+ This key sets |minimum height| to \meta{height} times the current value of
+ the circuit symbol unit and the |minimum width| to \meta{width} times this
+ value. Thus, this option can be used with a node command to set the size of
+ the node as a multiple of the circuit symbol unit.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC]
\draw (0,1) to [resistor] (2,1) to[inductor] (4,1);
@@ -336,41 +336,43 @@ annotation as a parameter to the symbol as in the following example:
\end{scope}
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
-
\subsubsection{Declaring New Symbols}
-
\begin{key}{/tikz/circuit declare symbol=\meta{name}}
- This key is used to declare a symbol. It does not cause this symbol
- to be shown nor does it set a graphic to be used for the symbol, it
- simply ``prepares'' several keys that can later be used to draw a
- symbol and to configure it.
-
- In detail, the first key that is defined is just called
- \meta{name}. This key should be given as an option to a |node| or on
- a |to| path, as explained below. The key will take options, which
- can be used to influence the way the symbol graphic is rendered.
-
- Let us have a look at an example. Suppose we want to define a symbol
- called |foo|, which just looks like a simple rectangle. We could
- then say
+ This key is used to declare a symbol. It does not cause this symbol to be
+ shown nor does it set a graphic to be used for the symbol, it simply
+ ``prepares'' several keys that can later be used to draw a symbol and to
+ configure it.
+
+ In detail, the first key that is defined is just called \meta{name}. This
+ key should be given as an option to a |node| or on a |to| path, as
+ explained below. The key will take options, which can be used to influence
+ the way the symbol graphic is rendered.
+
+ Let us have a look at an example. Suppose we want to define a symbol called
+ |foo|, which just looks like a simple rectangle. We could then say
+ %
\begin{codeexample}[code only]
\tikzset{circuit declare symbol=foo}
\end{codeexample}
- The symbol could now be used like this:
+ %
+ The symbol could now be used like this:
+ %
\begin{codeexample}[code only]
\node [foo] at (1,1) {};
\node [foo={red}] at (2,1) {};
\end{codeexample}
- However, in the above example we would not actually see anything
- since we have not yet set up the graphic to be used by |foo|. For
- this, we must use a key called |set foo graphic| or, generally,
- |set| \meta{name} |graphic|. This key gets graphic options as parameter
- that will be set when a symbol |foo| should be shown:
+ However, in the above example we would not actually see anything since we
+ have not yet set up the graphic to be used by |foo|. For this, we must use
+ a key called |set foo graphic| or, generally, |set| \meta{name} |graphic|.
+ This key gets graphic options as parameter that will be set when a symbol
+ |foo| should be shown:
+ %
\begin{codeexample}[]
\begin{tikzpicture}
[circuit declare symbol=foo,
@@ -381,302 +383,317 @@ annotation as a parameter to the symbol as in the following example:
\end{tikzpicture}
\end{codeexample}
- In detail, when you use the key \meta{name}=\meta{options} with a
- node, the following happens:
- \begin{enumerate}
- \item The |inner sep| is set to |0.5pt|.
- \item The following style is executed:
- \begin{stylekey}{/tikz/every circuit symbol}
- Use this style to set up things in general.
- \end{stylekey}
- \item The graphic options that have been set using
- |set| \meta{name} |graphic| are set.
- \item The style |every |\meta{name} is executed. You can use it to
- configure the symbol further.
- \item The \meta{options} are executed.
+ In detail, when you use the key \meta{name}=\meta{options} with a node, the
+ following happens:
+ %
+ \begin{enumerate}
+ \item The |inner sep| is set to |0.5pt|.
+ \item The following style is executed:
+ %
+ \begin{stylekey}{/tikz/every circuit symbol}
+ Use this style to set up things in general.
+ \end{stylekey}
+ \item The graphic options that have been set using |set| \meta{name}
+ |graphic| are set.
+ \item The style |every |\meta{name} is executed. You can use it to
+ configure the symbol further.
+ \item The \meta{options} are executed.
\end{enumerate}
- The key \meta{name} will have a different effect when it is used on
- a |to| path command inside a |circuit| environment (the |circuit|
- environment sets up |to| paths in such a way that the use of a key
- declared using |circuit declare symbol| is automatically detected).
- When \meta{name} is used on a |to| path, the above actions also
- happen (setting the inner separation, using the symbol graphic, and
- so on), but they are passed to the key |circuit handle symbol|,
- which is explained next.
+ The key \meta{name} will have a different effect when it is used on a |to|
+ path command inside a |circuit| environment (the |circuit| environment sets
+ up |to| paths in such a way that the use of a key declared using
+ |circuit declare symbol| is automatically detected). When \meta{name} is
+ used on a |to| path, the above actions also happen (setting the inner
+ separation, using the symbol graphic, and so on), but they are passed to
+ the key |circuit handle symbol|, which is explained next.
\end{key}
-
\begin{key}{/tikz/circuit handle symbol=\meta{options}}
- This key is mostly used internally. Its purpose is to render a
- symbol. The effect of this key differs, depending on whether it is
- used as the optional argument of a |to| path command or elsewhere.
-
- If the key is not used as an argument of a |to| path command, the
- \meta{options} are simply executed.
-
- The more interesting case happens when the key is given on a |to|
- path command. In this case, several things happen:
- \begin{enumerate}
- \item The |to| path is locally changed and set to an internal
- path (which you should not try to change) that consists mostly of
- a single straight line.
- \item The \meta{options} are tentatively executed with filtering
- switched on. Everything is filtered out, except for the key |pos|
- and also the styles |at start|, |very near start|, |near start|,
- |midway|, |near end|, |very near end|, and |at end|. If none of
- them is found, |midway| is used.
- \item The filtered option is used to determine a position for the
- symbol on the path. At the given position (with |pos=0|
- representing the start and |pos=1| representing the end), a node
- will be added to the path (in a manner to be described presently).
- \item This node gets \meta{options} as its option list.
- \item The node is added by virtue of a special |markings|
- decoration. This means that a |mark| command is executed that
- causes the node to be placed as a mark on the path.
- \item The marking decoration will automatically subdivide the path
- and cause a line to be drawn from the start of the path to the
- node's border (at the position that lies on a line from the node's
- center to the start of the path) and then from the node's border
- (at a position on the other side of the node) to the end of the
- path.
- \item The marking decoration will also take care of the case that
- multiple marks are present on a path, in this case the lines from
- and to the borders of the nodes are only between consecutive
- nodes.
- \item The marking decoration will also rotate the coordinate system
- in such a way that the $x$-axis points along the path. Thus, if
- you use the |transform shape| option, the node will ``point
- along'' the path.
- \item In case a node is at |pos=0| or at |pos=1| some special code
- will suppress the superfluous lines to the start or end of the
- path.
- \end{enumerate}
-
- The net effect of all of the above is that a node will be placed
- ``on the path'' and the path will have a ``gap'' just large enough
- to encompass the node. Another effect is that you can use this key
- multiple times on a path to add several node to a path, provided
- they do not overlap.
+ This key is mostly used internally. Its purpose is to render a symbol. The
+ effect of this key differs, depending on whether it is used as the optional
+ argument of a |to| path command or elsewhere.
+
+ If the key is not used as an argument of a |to| path command, the
+ \meta{options} are simply executed.
+
+ The more interesting case happens when the key is given on a |to| path
+ command. In this case, several things happen:
+ %
+ \begin{enumerate}
+ \item The |to| path is locally changed and set to an internal path
+ (which you should not try to change) that consists mostly of a
+ single straight line.
+ \item The \meta{options} are tentatively executed with filtering
+ switched on. Everything is filtered out, except for the key |pos|
+ and also the styles |at start|, |very near start|, |near start|,
+ |midway|, |near end|, |very near end|, and |at end|. If none of
+ them is found, |midway| is used.
+ \item The filtered option is used to determine a position for the
+ symbol on the path. At the given position (with |pos=0|
+ representing the start and |pos=1| representing the end), a node
+ will be added to the path (in a manner to be described presently).
+ \item This node gets \meta{options} as its option list.
+ \item The node is added by virtue of a special |markings| decoration.
+ This means that a |mark| command is executed that causes the node
+ to be placed as a mark on the path.
+ \item The marking decoration will automatically subdivide the path and
+ cause a line to be drawn from the start of the path to the node's
+ border (at the position that lies on a line from the node's center
+ to the start of the path) and then from the node's border (at a
+ position on the other side of the node) to the end of the path.
+ \item The marking decoration will also take care of the case that
+ multiple marks are present on a path, in this case the lines from
+ and to the borders of the nodes are only between consecutive nodes.
+ \item The marking decoration will also rotate the coordinate system in
+ such a way that the $x$-axis points along the path. Thus, if you
+ use the |transform shape| option, the node will ``point along'' the
+ path.
+ \item In case a node is at |pos=0| or at |pos=1| some special code will
+ suppress the superfluous lines to the start or end of the path.
+ \end{enumerate}
+
+ The net effect of all of the above is that a node will be placed ``on the
+ path'' and the path will have a ``gap'' just large enough to encompass the
+ node. Another effect is that you can use this key multiple times on a path
+ to add several node to a path, provided they do not overlap.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit]
\draw (0,0) to [circuit handle symbol={draw,shape=rectangle,near start},
circuit handle symbol={draw,shape=circle,near end}] (3,2);
\end{tikzpicture}
\end{codeexample}
+ %
\begin{codeexample}[]
\begin{tikzpicture}[transform shape,circuit]
\draw (0,0) to [circuit handle symbol={draw,shape=rectangle,at start},
circuit handle symbol={draw,shape=circle,near end}] (3,2);
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
-
\subsubsection{Pointing Symbols in the Right Direction}
-Unlike normal nodes, which generally should not be rotated since this
-will make their text hard to read, symbols often need to be
-rotated. There are two ways of achieving such rotations:
-
+Unlike normal nodes, which generally should not be rotated since this will make
+their text hard to read, symbols often need to be rotated. There are two ways
+of achieving such rotations:
+%
\begin{enumerate}
-\item When you place a symbol on a |to| path, the graphic symbol is
- automatically rotated such that it ``points along the path.'' Here
- is an examples that shows how the inductor shape (which looks,
- unrotated, like this: \tikz[circuit ee IEC]\node[inductor]{};) is
- automatically rotated around:
+ \item When you place a symbol on a |to| path, the graphic symbol is
+ automatically rotated such that it ``points along the path''. Here is
+ an examples that shows how the inductor shape (which looks, unrotated,
+ like this: \tikz[circuit ee IEC]\node[inductor]{};) is automatically
+ rotated around:
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
\draw (3,0) to[inductor] (1,0) to[inductor] (0,2);
\end{codeexample}
-\item Many shapes cannot be placed ``on'' a path in this way, namely
- whenever there are more than two possible inputs. Also, you may wish
- to place the nodes first, possibly using a matrix, and connect them
- afterwards. In this case, you can simply add rotations like
- |rotate=90| to the shapes to rotate them. The following four keys
- make this slightly more convenient:
- \begin{key}{/tikz/point up}
- This is the same as |rotate=90|.
+ %
+ \item Many shapes cannot be placed ``on'' a path in this way, namely
+ whenever there are more than two possible inputs. Also, you may wish to
+ place the nodes first, possibly using a matrix, and connect them
+ afterwards. In this case, you can simply add rotations like |rotate=90|
+ to the shapes to rotate them. The following four keys make this
+ slightly more convenient:
+ %
+ \begin{key}{/tikz/point up}
+ This is the same as |rotate=90|.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \node [diode,point up] {};
\end{codeexample}
- \end{key}
- \begin{key}{/tikz/point down}
- This is the same as |rotate=-90|.
+ \end{key}
+ %
+ \begin{key}{/tikz/point down}
+ This is the same as |rotate=-90|.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \node [diode,point down] {};
\end{codeexample}
- \end{key}
- \begin{key}{/tikz/point left}
- This is the same as |rotate=-180|.
+ \end{key}
+ %
+ \begin{key}{/tikz/point left}
+ This is the same as |rotate=-180|.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \node [diode,point left] {};
\end{codeexample}
- \end{key}
- \begin{key}{/tikz/point right}
- This key has no effect.
+ \end{key}
+ %
+ \begin{key}{/tikz/point right}
+ This key has no effect.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \node [diode,point right] {};
\end{codeexample}
- \end{key}
+ \end{key}
\end{enumerate}
\subsubsection{Info Labels}
-Info labels are used to add text to a circuit symbol. Unlike normal
-nodes like a rectangle, circuit symbols typically do not have text
-``on'' them, but the text is placed next to them (like the text
-``$3\,\Omega$'' next to a resistor).
+Info labels are used to add text to a circuit symbol. Unlike normal nodes like
+a rectangle, circuit symbols typically do not have text ``on'' them, but the
+text is placed next to them (like the text ``$3\,\Omega$'' next to a resistor).
-\tikzname\ already provides the |label| option for this purpose. The
-|info| option is built on top of this option, but it comes in some
-predefined variants that are especially useful in conjunction with
-circuits.
+\tikzname\ already provides the |label| option for this purpose. The |info|
+option is built on top of this option, but it comes in some predefined variants
+that are especially useful in conjunction with circuits.
\begin{key}{/tikz/info=\opt{|[|\meta{options}|]|\meta{angle}|:|}\meta{text}}
- This key has nearly the same effect as the |label| key, only the
- following style is used additionally automatically:
- \begin{stylekey}{/tikz/every info}
- Set this style to configure the styling of info labels. Since this
- key is \emph{not} used with normal labels, it provides an easy way
- of changing the way info labels look without changing other
- labels.
- \end{stylekey}
- The \meta{options} and \meta{angle} are passed directly to the
- |label| command.
+ This key has nearly the same effect as the |label| key, only the following
+ style is used additionally automatically:
+ %
+ \begin{stylekey}{/tikz/every info}
+ Set this style to configure the styling of info labels. Since this
+ key is \emph{not} used with normal labels, it provides an easy way
+ of changing the way info labels look without changing other
+ labels.
+ \end{stylekey}
+ %
+ The \meta{options} and \meta{angle} are passed directly to the |label|
+ command.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC,every info/.style=red]
\node [resistor,info=$3\Omega$] {};
\end{tikzpicture}
\end{codeexample}
- You will find a detailed discussion of the |label| option on
- page~\pageref{label-option}.
+ You will find a detailed discussion of the |label| option on
+ page~\pageref{label-option}.
- Hint: To place some text \emph{on} the main node, use |center| as
- the \meta{angle}:
+ Hint: To place some text \emph{on} the main node, use |center| as the
+ \meta{angle}:
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC,every info/.style=red]
\node [resistor,info=center:$3\Omega$] {};
\node [resistor,point up,info=center:$R_1$] at (2,0) {};
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
\begin{key}{/tikz/info'=\opt{|[|\meta{options}|]|\meta{angle}|:|}\meta{text}}
- This key works exactly like the |info| key, only in case the
- \meta{angle} is missing, it defaults to |below| instead of the
- current value of |label position|, which is usually |above|. This
- means that when you use |info|, you get a label above the node,
- while when you use the |info'| key you get a label below the
- node. In case the node has been rotated, the positions of the info
- nodes are rotated accordingly.
+ This key works exactly like the |info| key, only in case the \meta{angle}
+ is missing, it defaults to |below| instead of the current value of
+ |label position|, which is usually |above|. This means that when you use
+ |info|, you get a label above the node, while when you use the |info'| key
+ you get a label below the node. In case the node has been rotated, the
+ positions of the info nodes are rotated accordingly.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC,every info/.style=red]
\draw (0,0) to[resistor={info={$3\Omega$},info'={$R_1$}}] (3,0)
to[resistor={info={$4\Omega$},info'={$R_2$}}] (3,2);
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
\begin{key}{/tikz/info sloped=\opt{|[|\meta{options}|]|\meta{angle}|:|}\meta{text}}
- This key works like |info|, only the |transform shape| option is set
- when the label is drawn, causing it to follow the sloping of the
- main node.
+ This key works like |info|, only the |transform shape| option is set when
+ the label is drawn, causing it to follow the sloping of the main node.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC,every info/.style=red]
\draw (0,0) to[resistor={info sloped={$3\Omega$}}] (3,0)
to[resistor={info sloped={$4\Omega$}}] (3,2);
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
\begin{key}{/tikz/info' sloped=}
- This is a combination of |info'| and |info sloped|.
+ This is a combination of |info'| and |info sloped|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC,every info/.style=red]
\draw (0,0) to[resistor={info' sloped={$3\Omega$}}] (3,0)
to[resistor={info' sloped={$4\Omega$}}] (3,2);
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
\begin{key}{/tikz/circuit declare unit=\marg{name}\marg{unit}}
- This key is used to declare keys that make it easy to attach
- physical units to nodes. The idea is that instead of
- |info=$3\Omega$| you can write |ohm=3| or instead of
- |info'=$5\mathrm{S}$| you can write |siemens'=5|.
-
- In detail, four keys are defined, namely |/tikz/|\meta{name},
- |/tikz/|\meta{name}|'|, |/tikz/|\meta{name} |sloped|, and
- |/tikz/|\meta{name}|'| |sloped|. The arguments of all of these keys
- are of the form
- \opt{|[|\meta{options}|]|\meta{angle}|:|}\meta{value} and it is
- passed (slightly modified) to the corresponding key |info|, |info'|,
- |info| |sloped|, or |info'| |sloped|. The ``slight modification'' is the
- following: The text that is passed to the, say, |info| key is not
- \meta{value}, but rather |$\mathrm{|\meta{value}\meta{unit}|}$|
-
- This means that after you said |circuit declare unit={ohm}{\Omega}|,
- then |ohm=5k| will have the same effect as
- |info={[every ohm]$\mathrm{5k\Omega}$}|. Here, |every ohm| is a
- style that allows you to configure the appearance of this unit.
- Since the |info| key is used internally, by changing the
- |every info| style, you can change the appearance of all units
- infos.
+ This key is used to declare keys that make it easy to attach physical units
+ to nodes. The idea is that instead of |info=$3\Omega$| you can write
+ |ohm=3| or instead of |info'=$5\mathrm{S}$| you can write |siemens'=5|.
+
+ In detail, four keys are defined, namely |/tikz/|\meta{name},
+ |/tikz/|\meta{name}|'|, |/tikz/|\meta{name} |sloped|, and
+ |/tikz/|\meta{name}|'| |sloped|. The arguments of all of these keys are of
+ the form \opt{|[|\meta{options}|]|\meta{angle}|:|}\meta{value} and it is
+ passed (slightly modified) to the corresponding key |info|, |info'|, |info|
+ |sloped|, or |info'| |sloped|. The ``slight modification'' is the
+ following: The text that is passed to the, say, |info| key is not
+ \meta{value}, but rather |$\mathrm{|\meta{value}\meta{unit}|}$|
+
+ This means that after you said |circuit declare unit={ohm}{\Omega}|, then
+ |ohm=5k| will have the same effect as
+ |info={[every ohm]$\mathrm{5k\Omega}$}|. Here, |every ohm| is a style that
+ allows you to configure the appearance of this unit. Since the |info| key
+ is used internally, by changing the |every info| style, you can change the
+ appearance of all units infos.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC,circuit declare unit={my ohm}{O}]
\draw (0,0) to[resistor={my ohm' sloped=3}] (3,2);
\end{tikzpicture}
\end{codeexample}
+ %
\end{key}
\subsubsection{Declaring and Using Annotations}
-Annotations are quite similar to info labels. The main difference is
-that they generally cause something to be drawn by default rather than
-some text to be added (although an annotation might also add some
-text).
+Annotations are quite similar to info labels. The main difference is that they
+generally cause something to be drawn by default rather than some text to be
+added (although an annotation might also add some text).
Annotations can be declared using the following key:
\begin{key}{/tikz/circuit declare annotation=\marg{name}\marg{distance}\marg{path}}
- This key is used to declare an annotation named \meta{name}. Once
- declared, it can be used as an argument of a symbol and will add the
- drawing in \meta{path} to the symbol. In detail, the following
- happens:
-
- \textbf{The Main Keys.}
- Two keys called \meta{name} and \meta{name}|'| are
- defined. The second causes the annotation to be ``mirrored and
- placed on the other side'' of the symbol. Both of these keys may
- also take further keys as parameter like |info| keys.
- Whenever the \meta{name} key is used, a local scope is opened and in
- this scope the following things are done:
- \begin{enumerate}
- \item The style |every| \meta{name} is executed.
- \item The following style is executed and then |arrows=->|:
- \begin{stylekey}{/tikz/annotation arrow}
- This style should set the |>| key to some desirable arrow tip.
- \end{stylekey}
- \item The coordinate system is shifted such that the origin is at
- the north anchor of the symbol. (For the \meta{name}|'| key the
- coordinate system is flipped and shifted such that the origin is
- at the south anchor of the symbol.)
- \item The |label distance| is locally set to \meta{distance}.
- \item The parameter options given to the \meta{name} key are
- executed.
- \item The \meta{path} is executed.
- \end{enumerate}
-
- \textbf{Usage.}
- What all of the above amounts to is best explained by an
- example. Suppose we wish to create an annotation that looks like a
- little circular arrow (like \tikz \draw [->] (0,0) arc
- (-270:80:1ex);). We could then say:
+ This key is used to declare an annotation named \meta{name}. Once declared,
+ it can be used as an argument of a symbol and will add the drawing in
+ \meta{path} to the symbol. In detail, the following happens:
+
+
+ \textbf{The Main Keys.}
+ Two keys called \meta{name} and \meta{name}|'| are defined. The second
+ causes the annotation to be ``mirrored and placed on the other side'' of
+ the symbol. Both of these keys may also take further keys as parameter like
+ |info| keys. Whenever the \meta{name} key is used, a local scope is opened
+ and in this scope the following things are done:
+ %
+ \begin{enumerate}
+ \item The style |every| \meta{name} is executed.
+ \item The following style is executed and then |arrows=->|:
+ %
+ \begin{stylekey}{/tikz/annotation arrow}
+ This style should set the |>| key to some desirable arrow tip.
+ \end{stylekey}
+ \item The coordinate system is shifted such that the origin is at the
+ north anchor of the symbol. (For the \meta{name}|'| key the
+ coordinate system is flipped and shifted such that the origin is at
+ the south anchor of the symbol.)
+ \item The |label distance| is locally set to \meta{distance}.
+ \item The parameter options given to the \meta{name} key are executed.
+ \item The \meta{path} is executed.
+ \end{enumerate}
+
+
+ \textbf{Usage.}
+ What all of the above amounts to is best explained by an example. Suppose
+ we wish to create an annotation that looks like a little circular arrow
+ (like \tikz \draw [->] (0,0) arc (-270:80:1ex);). We could then say:
+ %
\begin{codeexample}[code only]
\tikzset{circuit declare annotation=
{circular annotation}
@@ -684,7 +701,9 @@ Annotations can be declared using the following key:
{(0pt,8pt) arc (-270:80:3.5pt)}
}
\end{codeexample}
- We can then use it like this:
+ %
+ We can then use it like this:
+ %
\tikzset{circuit declare annotation=
{circular annotation}
{8pt}
@@ -694,11 +713,12 @@ Annotations can be declared using the following key:
\tikz[circuit ee IEC]
\draw (0,0) to [resistor={circular annotation}] (3,0);
\end{codeexample}
- Well, not very impressive since we do not see anything. This is due to
- the fact that the \meta{path} becomes part of a path that contains
- the symbol node an nothing else. This path is not drawn or filled,
- so we do not see anything. What we must do is to use an |edge| path
- operation:
+ %
+ Well, not very impressive since we do not see anything. This is due to the
+ fact that the \meta{path} becomes part of a path that contains the symbol
+ node an nothing else. This path is not drawn or filled, so we do not see
+ anything. What we must do is to use an |edge| path operation:
+ %
\begin{codeexample}[]
\tikzset{circuit declare annotation={circular annotation}{9pt}
{(0pt,8pt) edge[to path={arc(-270:80:3.5pt)}] ()}
@@ -707,13 +727,14 @@ Annotations can be declared using the following key:
\draw (0,0) to [resistor={circular annotation}] (3,0)
to [capacitor={circular annotation'}] (3,2);
\end{codeexample}
- The \meta{distance} is important for the correct placement of
- additional |info| labels. When an annotation is present, the info
- labels may need to be moved further away from the symbol, but not
- always. For this reason, an annotation defines an additional
- \meta{distance} that is applied to all info labels given
- as parameters to the annotation. Here is an example, that shows the
- difference:
+ %
+ The \meta{distance} is important for the correct placement of additional
+ |info| labels. When an annotation is present, the info labels may need to
+ be moved further away from the symbol, but not always. For this reason, an
+ annotation defines an additional \meta{distance} that is applied to all
+ info labels given as parameters to the annotation. Here is an example, that
+ shows the difference:
+ %
\tikzset{circuit declare annotation={circular annotation}{9pt}
{(0pt,8pt) edge[to path={arc (-270:80:3.5pt)}] ()}
}
@@ -722,28 +743,28 @@ Annotations can be declared using the following key:
\draw (0,0) to [resistor={circular annotation,ohm=5}] (2,0)
to [resistor={circular annotation={ohm=5}}] (4,0);
\end{codeexample}
+ %
\end{key}
\subsubsection{Theming Symbols}
\label{section-theming-symbols}
-For each symbol, a certain graphical representation is chosen to
-actually show the symbol. You can modify this graphical representation
-in several ways:
+For each symbol, a certain graphical representation is chosen to actually show
+the symbol. You can modify this graphical representation in several ways:
+%
\begin{itemize}
-\item You can select a different library and use a different
- |circuit ...| key. This will change all graphics used for the
- symbols.
-\item You can generally change the size of graphic symbols by setting
- |circuit size unit| to a different value or using a key like
- |small circuit symbols|.
-\item
- You can add options to the graphics used by symbols either globally
- by setting the |every circuit| |symbol| style or locally by setting the
- |every| \meta{name} style, where \meta{name} is the name of a
- symbol. For instance, in the following picture the symbols are
- ridiculously thick and resistors are red.
+ \item You can select a different library and use a different |circuit ...|
+ key. This will change all graphics used for the symbols.
+ \item You can generally change the size of graphic symbols by setting
+ |circuit size unit| to a different value or using a key like
+ |small circuit symbols|.
+ \item You can add options to the graphics used by symbols either globally
+ by setting the |every circuit| |symbol| style or locally by setting the
+ |every| \meta{name} style, where \meta{name} is the name of a symbol.
+ For instance, in the following picture the symbols are ridiculously
+ thick and resistors are red.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
[circuit ee IEC,
@@ -753,66 +774,78 @@ in several ways:
\draw (0,0) to [inductor] ++(right:3) to [resistor] ++(up:2);
\end{tikzpicture}
\end{codeexample}
-\item You can selectively change the graphic used for a symbol
- by saying |set resistor graphic=|.
-\item You can change one or more of the following styles:
- \begin{stylekey}{/tikz/circuit symbol open (initially draw)}
- This style is used with symbols that consist of lines that
- surround some area. For instance, the IEC version of a resistor is
- an open symbol.
+ %
+ \item You can selectively change the graphic used for a symbol by saying
+ |set resistor graphic=|.
+ \item You can change one or more of the following styles:
+ %
+ \begin{stylekey}{/tikz/circuit symbol open (initially draw)}
+ This style is used with symbols that consist of lines that surround
+ some area. For instance, the IEC version of a resistor is an open
+ symbol.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC,
circuit symbol open/.style={thick,draw,fill=yellow}]
\draw (0,0) to [inductor] ++(right:3) to [resistor] ++(up:2);
\end{codeexample}
- \end{stylekey}
- \begin{stylekey}{/tikz/circuit symbol filled (initially {draw,fill=black})}
- This style is used with symbols that are completely filled. For
- instance, the variant IEC version of an inductor is a filled,
- black rectangle.
- \end{stylekey}
- \begin{stylekey}{/tikz/circuit symbol lines (initially draw)}
- This style is used with symbols that consist only of lines that do
- not surround anything. Examples are a capacitor.
+ \end{stylekey}
+ %
+ \begin{stylekey}{/tikz/circuit symbol filled (initially {draw,fill=black})}
+ This style is used with symbols that are completely filled. For
+ instance, the variant IEC version of an inductor is a filled, black
+ rectangle.
+ \end{stylekey}
+ %
+ \begin{stylekey}{/tikz/circuit symbol lines (initially draw)}
+ This style is used with symbols that consist only of lines that do
+ not surround anything. Examples are a capacitor.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC,
circuit symbol lines/.style={thick,draw=red}]
\draw (0,0) to [capacitor] ++(right:3) to [resistor] ++(up:2);
\end{codeexample}
- \end{stylekey}
- \begin{stylekey}{/tikz/circuit symbol wires (initially draw)}
- This style is used for symbols that consist only of ``wires.'' The
- difference to the previous style is that a symbol consisting of
- wires will look strange when the lines are thicker than the lines
- of normal wires, while for symbols consisting of lines (but not
- wires) it may look nice to make them thicker. An example is the
- |make contact| symbol.
+ \end{stylekey}
+ %
+ \begin{stylekey}{/tikz/circuit symbol wires (initially draw)}
+ This style is used for symbols that consist only of ``wires''. The
+ difference to the previous style is that a symbol consisting of
+ wires will look strange when the lines are thicker than the lines
+ of normal wires, while for symbols consisting of lines (but not
+ wires) it may look nice to make them thicker. An example is the
+ |make contact| symbol.
- Compare
+ Compare
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC,circuit symbol lines/.style={draw,very thick}]
\draw (0,0) to [capacitor={near start},
make contact={near end}] (3,0);
\end{codeexample}
- to
+ %
+ to
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC,circuit symbol wires/.style={draw,very thick}]
\draw (0,0) to [capacitor={near start},
make contact={near end}] (3,0);
\end{codeexample}
- \end{stylekey}
+ \end{stylekey}
\end{itemize}
-All circuit environments like |circuit logic IEC| mainly use options
-like |set and gate graphic=...| to set up the graphics used for a certain
-symbol. It turns out that graphic hidden in the ``|...|'' part is also
-always available as a separate style, whose name contains the
-library's initials. For instance, the |circuit logic IEC| option
-actually contains the following command:
+All circuit environments like |circuit logic IEC| mainly use options like
+|set and gate graphic=...| to set up the graphics used for a certain symbol. It
+turns out that graphic hidden in the ``|...|'' part is also always available as
+a separate style, whose name contains the library's initials. For instance, the
+|circuit logic IEC| option actually contains the following command:
+%
\begin{codeexample}[code only]
set and gate graphic = and gate IEC graphic,
\end{codeexample}
+%
The |and gate IEC graphic| style, in turn, is defined as follows:
+%
\begin{codeexample}[code only]
\tikzset{and gate IEC graphic/.style=
{
@@ -824,14 +857,13 @@ The |and gate IEC graphic| style, in turn, is defined as follows:
}
\end{codeexample}
-Normally, you do not need to worry about this, since you will not need
-to access a style like |and gate IEC graphic| directly; you will only
-use the |and gate| key. However, sometimes libraries define
-\emph{variants} of a graphic; for instance, there are two variants for
-the resistor graphic in the IEC library. In this case you can set the
-graphic for the resistor to this variant (or back to the original) by
-saying |set resistor graphic| yourself:
-
+Normally, you do not need to worry about this, since you will not need to
+access a style like |and gate IEC graphic| directly; you will only use the
+|and gate| key. However, sometimes libraries define \emph{variants} of a
+graphic; for instance, there are two variants for the resistor graphic in the
+IEC library. In this case you can set the graphic for the resistor to this
+variant (or back to the original) by saying |set resistor graphic| yourself:
+%
\begin{codeexample}[]
\begin{tikzpicture}[circuit ee IEC]
% Standard resistor
@@ -849,65 +881,63 @@ saying |set resistor graphic| yourself:
\end{codeexample}
-
\subsection{Logical Circuits}
-
\subsubsection{Overview}
-A \emph{logical circuit} is a circuit that contains what we call
-\emph{logical gates} like an |and gate| or an |xor gate|. The logical
-libraries are intended to make it easy to draw such circuits.
+A \emph{logical circuit} is a circuit that contains what we call \emph{logical
+gates} like an |and gate| or an |xor gate|. The logical libraries are intended
+to make it easy to draw such circuits.
-In the following, we first have a look at the different libraries that
-can be used in principle and how the symbols look like. Then we have a
-more detailed look at how the symbols are used. Finally, we discuss
-the implementation details.
+In the following, we first have a look at the different libraries that can be
+used in principle and how the symbols look like. Then we have a more detailed
+look at how the symbols are used. Finally, we discuss the implementation
+details.
-There are different ways of depicting logical gates, which is why there
-are different (sub-)libraries for drawing them. They provide the
-necessary graphical representations of the symbols declared in the
-following library:
+There are different ways of depicting logical gates, which is why there are
+different (sub-)libraries for drawing them. They provide the necessary
+graphical representations of the symbols declared in the following library:
\begin{tikzlibrary}{circuits.logic}
- This library declares the logical gate symbols, but does not
- provide the symbol graphics.
- The library also defines the following key which, however, is also
- only used indirectly, namely by other libraries:
- \begin{key}{/tikz/circuit logic}
- This style calls the keys |circuit| (which internally calls
- |every circuit|, then it defines the |inputs| key and it calls the
- |every circuit logic| key.
- \begin{key}{/tikz/inputs=\meta{inputs}}
- This key is defined only inside the scope of a
- |circuit logic|. There, it has the same effect as
- |logic gate inputs|, described on
- page~\pageref{logic-gate-inputs}.
+ This library declares the logical gate symbols, but does not provide the
+ symbol graphics. The library also defines the following key which, however,
+ is also only used indirectly, namely by other libraries:
+ %
+ \begin{key}{/tikz/circuit logic}
+ This style calls the keys |circuit| (which internally calls
+ |every circuit|, then it defines the |inputs| key and it calls the
+ |every circuit logic| key.
+ %
+ \begin{key}{/tikz/inputs=\meta{inputs}}
+ This key is defined only inside the scope of a |circuit logic|.
+ There, it has the same effect as |logic gate inputs|, described on
+ page~\pageref{logic-gate-inputs}.
+ \end{key}
+ %
+ \begin{stylekey}{/tikz/every circuit logic}
+ Use this key to configure the appearance of logical circuits.
+ \end{stylekey}
\end{key}
- \begin{stylekey}{/tikz/every circuit logic}
- Use this key to configure the appearance of logical circuits.
- \end{stylekey}
- \end{key}
\end{tikzlibrary}
-Since the |circuit.logic| library does not define any actual graphics,
-you need to use one of the following libraries, instead:
+Since the |circuit.logic| library does not define any actual graphics, you need
+to use one of the following libraries, instead:
\begin{pgflibrary}{circuits.logic.IEC}
- This library provides graphics based on gates
- recommended by the International Electrotechnical Commission. When
- you include this library, you can use the following key to
- set up a scope that contains a logical circuit where the gates are
- shown in this style.
+ This library provides graphics based on gates recommended by the
+ International Electrotechnical Commission. When you include this library,
+ you can use the following key to set up a scope that contains a logical
+ circuit where the gates are shown in this style.
- \begin{key}{/tikz/circuit logic IEC}
- This key calls |circuit logic| and installs the IEC-like
- graphics for the logical symbols like |and gate|.
+ \begin{key}{/tikz/circuit logic IEC}
+ This key calls |circuit logic| and installs the IEC-like graphics for
+ the logical symbols like |and gate|.
- As explained in Section~\ref{section-theming-symbols}, for each
- graphic symbol of the library there is also a style that stores this
- particular appearance. These keys are called |and gate IEC graphic|,
- |or gate IEC graphic|, and so on.
+ As explained in Section~\ref{section-theming-symbols}, for each graphic
+ symbol of the library there is also a style that stores this particular
+ appearance. These keys are called |and gate IEC graphic|,
+ |or gate IEC graphic|, and so on.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit logic IEC,
every circuit symbol/.style={
@@ -930,21 +960,23 @@ you need to use one of the following libraries, instead:
\draw (o.output) -- ++(right:3mm);
\end{tikzpicture}
\end{codeexample}
- \end{key}
+ \end{key}
\end{pgflibrary}
\begin{pgflibrary}{circuits.logic.US}
- This library provides graphics showing ``American'' logic
- gates. It defines the following key:
+ This library provides graphics showing ``American'' logic gates. It defines
+ the following key:
- \begin{key}{/tikz/circuit logic US}
- This style calls |circuit logic| and installs US-like graphics
- for the logical symbols like |and gate|. For instance, it says
- \begin{codeexample}[code only]
+ \begin{key}{/tikz/circuit logic US}
+ This style calls |circuit logic| and installs US-like graphics for the
+ logical symbols like |and gate|. For instance, it says
+ %
+\begin{codeexample}[code only]
set and gate graphic = and gate US graphic
- \end{codeexample}
+\end{codeexample}
- Here is an example:
+ Here is an example:
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit logic CDH,
tiny circuit symbols,
@@ -967,37 +999,36 @@ set and gate graphic = and gate US graphic
\draw (o.output) -- ++(right:3mm);
\end{tikzpicture}
\end{codeexample}
- \end{key}
+ \end{key}
\end{pgflibrary}
\begin{pgflibrary}{circuits.logic.CDH}
- This library provides graphics based on the logic symbols used in
- A. Croft, R. Davidson, and M. Hargreaves (1992), \emph{Engineering
- Mathematics}, Addison-Wesley, 82--95. They are identical to the
- US-style symbols, except for the and- and nand-gates.
-
- \begin{key}{/tikz/circuit logic CDH}
- This key calls |circuit logic US| and installs the two special
- and- and nand-gates, that is, it uses |set and gate graphic| with
- |and gate CDH graphic| and likewise for nand-gates.
- \end{key}
+ This library provides graphics based on the logic symbols used in A. Croft,
+ R. Davidson, and M. Hargreaves (1992), \emph{Engineering Mathematics},
+ Addison-Wesley, 82--95. They are identical to the US-style symbols, except
+ for the and- and nand-gates.
+
+ \begin{key}{/tikz/circuit logic CDH}
+ This key calls |circuit logic US| and installs the two special and- and
+ nand-gates, that is, it uses |set and gate graphic| with
+ |and gate CDH graphic| and likewise for nand-gates.
+ \end{key}
\end{pgflibrary}
-
Inside |circuit logic XYZ| scopes, you can now use the keys shown in
-Section~\ref{section-logic-symbols}. We have a more detailed look at
-one of them, all the other work the same way:
+Section~\ref{section-logic-symbols}. We have a more detailed look at one of
+them, all the other work the same way:
\begin{key}{/tikz/and gate}
- This key should be passed to a |node| command. It will cause the
- node to ``look like'' an |and gate|, where the exact appearance of the
- gate is dictated by the which circuit environment is used. To
- further configure the appearance of the |and gate|, see
- Section~\ref{section-theming-symbols}.
-
+ This key should be passed to a |node| command. It will cause the node to
+ ``look like'' an |and gate|, where the exact appearance of the gate is
+ dictated by the which circuit environment is used. To further configure the
+ appearance of the |and gate|, see Section~\ref{section-theming-symbols}.
+ %
\begin{codeexample}[]
\tikz [circuit logic IEC] \node [and gate] {$A$};
\end{codeexample}
+ %
\begin{codeexample}[]
\tikz [circuit logic US]
{
@@ -1006,24 +1037,24 @@ one of them, all the other work the same way:
}
\end{codeexample}
- \medskip\textbf{Inputs.}
- Multiple inputs can be specified for a logic gate (provided they
- support multiple inputs: a not gate---also known as an
- inverter---does not). However, there is an upper limit for the
- number of inputs which has been set to 1024, which should be \emph{way}
- more than would ever be needed.
+ \medskip\textbf{Inputs.}
+ Multiple inputs can be specified for a logic gate (provided they support
+ multiple inputs: a not gate -- also known as an inverter -- does not).
+ However, there is an upper limit for the number of inputs which has been
+ set to 1024, which should be \emph{way} more than would ever be needed.
- The following key is used to configure the inputs. It is available
- only inside a |circuit logic| environment.
+ The following key is used to configure the inputs. It is available only
+ inside a |circuit logic| environment.
- \begin{key}{/tikz/inputs=\meta{input list} (initially \char`\{normal,normal\char`\})}
- If a gate has $n$ inputs, the \meta{input list} should consists of
- $n$ letters, each being |i| for ``inverted'' or |n| for
- ``normal.'' Inverted gates will be indicated by a little
- circle. In any case the anchors for the inputs will be set
- up appropriately, numbered from top to bottom |input 1|, |input 2|,
- \ldots and so on. If the gate only supports one input the anchor
- is simply called |input| with no numerical index.
+ \begin{key}{/tikz/inputs=\meta{input list} (initially \char`\{normal,normal\char`\})}
+ If a gate has $n$ inputs, the \meta{input list} should consists of $n$
+ letters, each being |i| for ``inverted'' or |n| for ``normal''.
+ Inverted gates will be indicated by a little circle. In any case the
+ anchors for the inputs will be set up appropriately, numbered from top
+ to bottom |input 1|, |input 2|, \ldots and so on. If the gate only
+ supports one input the anchor is simply called |input| with no
+ numerical index.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[circuit logic IEC]
\node[and gate,inputs={inini}] (A) {};
@@ -1032,26 +1063,23 @@ one of them, all the other work the same way:
\draw (A.output) -- ++(right:5mm);
\end{tikzpicture}
\end{codeexample}
- \end{key}
+ \end{key}
- (This key is just a shorthand for |logic gate inputs|, described
- in detail on page~\pageref{logic-gate-inputs}. There you will also
- find descriptions of how to configure the size of the inverted
- circles and the way the symbol size increases when there are too
- many inputs.)
+ (This key is just a shorthand for |logic gate inputs|, described in detail
+ on page~\pageref{logic-gate-inputs}. There you will also find descriptions
+ of how to configure the size of the inverted circles and the way the symbol
+ size increases when there are too many inputs.)
- \textbf{Output.}
- Every logic gate has one anchor called |output|.
+ \textbf{Output.}
+ Every logic gate has one anchor called |output|.
\end{key}
\subsubsection{Symbols: The Gates}
-
\label{section-logic-symbols}
The following table shows which symbols are declared by the main
-|circuits.logic| library and their appearance in the different
-sublibraries.
+|circuits.logic| library and their appearance in the different sublibraries.
\medskip
\def\gateexamples#1{%
@@ -1077,37 +1105,34 @@ sublibraries.
\subsubsection{Implementation: The Logic Gates Shape Library}
-The previous sections described the \tikzname\ interface for creating
-logical circuits. In this section we take a closer look at the
-underlying \pgfname\ libraries.
+The previous sections described the \tikzname\ interface for creating logical
+circuits. In this section we take a closer look at the underlying \pgfname\
+libraries.
Just as there are several \tikzname\ circuit libraries, there are two
-underlying \pgfname\ shape libraries, one for creating US-style gates
-and one for IEC-style gates. These libraries define \emph{shapes}
-only. It is the job of the circuit libraries to ``theme'' them so that
-they ``look nice.'' However, in principle, you can also use these
-shapes directly.
+underlying \pgfname\ shape libraries, one for creating US-style gates and one
+for IEC-style gates. These libraries define \emph{shapes} only. It is the job
+of the circuit libraries to ``theme'' them so that they ``look nice''. However,
+in principle, you can also use these shapes directly.
-Let us begin with the base library that defines the handling of
-inputs.
+Let us begin with the base library that defines the handling of inputs.
\begin{pgflibrary}{shapes.gates.logic}
- This library defines common keys used by all logical gate shapes.
-
-\begin{key}{/pgf/logic gate inputs=\meta{input list} (initially \char`\{normal,normal\char`\})}
- \label{logic-gate-inputs}%
- Specify the inputs for the logic gate. The keyword |inverted|
- indicates an inverted input which will mean \pgfname{} will draw a
- circle attached to the main shape of the logic gate. Any keyword
- that is not |inverted| will be treated as a ``normal'' or
- ``non-inverted'' input (however, for readability, you may wish to
- use |normal| or |non-inverted|), and \pgfname{} will not draw the
- circle.
- In both cases the anchors for the inputs will be set
- up appropriately, numbered from top to bottom |input 1|, |input 2|,
- \ldots and so on. If the gate only supports one input the anchor
- is simply called |input| with no numerical index.
-
+ This library defines common keys used by all logical gate shapes.
+
+ \begin{key}{/pgf/logic gate inputs=\meta{input list} (initially \char`\{normal,normal\char`\})}
+ \label{logic-gate-inputs}%
+ Specify the inputs for the logic gate. The keyword |inverted| indicates
+ an inverted input which will mean \pgfname{} will draw a circle
+ attached to the main shape of the logic gate. Any keyword that is not
+ |inverted| will be treated as a ``normal'' or ``non-inverted'' input
+ (however, for readability, you may wish to use |normal| or
+ |non-inverted|), and \pgfname{} will not draw the circle. In both cases
+ the anchors for the inputs will be set up appropriately, numbered from
+ top to bottom |input 1|, |input 2|, \ldots and so on. If the gate only
+ supports one input the anchor is simply called |input| with no
+ numerical index.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[minimum height=0.75cm]
\node[and gate IEC, draw, logic gate inputs={inverted, normal, inverted}]
@@ -1118,13 +1143,13 @@ inputs.
\end{tikzpicture}
\end{codeexample}
- For multiple inputs it may be somewhat unwieldy to specify a long
- list, thus, the following ``shorthand'' is permitted (this is an
- extension of ideas due to Juergen Werber and Christoph Bartoschek):
- Using |i| for inverted and |n| for normal inputs, \meta{input list}
- can be specified \emph{without the commas}. So, for example,
- |ini| is equivalent to |inverted, normal, inverted|.
-
+ For multiple inputs it may be somewhat unwieldy to specify a long list,
+ thus, the following ``shorthand'' is permitted (this is an extension of
+ ideas due to Jürgen Werber and Christoph Bartoschek): Using |i| for
+ inverted and |n| for normal inputs, \meta{input list} can be specified
+ \emph{without the commas}. So, for example, |ini| is equivalent to
+ |inverted, normal, inverted|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[minimum height=0.75cm]
\node[or gate US, draw,logic gate inputs=inini] (A) {};
@@ -1133,27 +1158,24 @@ inputs.
\draw (A.output) -- ([xshift=0.5cm]A.output);
\end{tikzpicture}
\end{codeexample}
+ \end{key}
-\end{key}
-
-The height of the gate may be increased to accommodate the number
-of inputs. In fact, it depends on three variables:
-$n$, the number of inputs, $r$, the radius of the circle used
-to indicate an inverted input and $s$, the distance between
-the centers of the inputs.
-The default height is then calculated according to the expression
-$(n+1)\times\max(2r,s)$. This then may
-be increased to accommodate the node contents or any
-minimum size specifications.
-
-The radius of the inverted input circle and the distance between the
-centers of the inputs can be customized using the following keys:
+ The height of the gate may be increased to accommodate the number of
+ inputs. In fact, it depends on three variables: $n$, the number of inputs,
+ $r$, the radius of the circle used to indicate an inverted input and $s$,
+ the distance between the centers of the inputs. The default height is then
+ calculated according to the expression $(n+1)\times\max(2r,s)$. This then
+ may be increased to accommodate the node contents or any minimum size
+ specifications.
-\begin{key}{/pgf/logic gate inverted radius=\meta{length} (initially 2pt)}
- Set the radius of the circle that is used to indicate inverted
- inputs. This is also the radius of the circle used for the inverted
- output of the |nand|, |nor|, |xnor| and |not| gates.
+ The radius of the inverted input circle and the distance between the
+ centers of the inputs can be customized using the following keys:
+ \begin{key}{/pgf/logic gate inverted radius=\meta{length} (initially 2pt)}
+ Set the radius of the circle that is used to indicate inverted inputs.
+ This is also the radius of the circle used for the inverted output of
+ the |nand|, |nor|, |xnor| and |not| gates.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[minimum height=0.75cm]
\tikzset{every node/.style={shape=nand gate CDH, draw, logic gate inputs=ii}}
@@ -1161,12 +1183,13 @@ centers of the inputs can be customized using the following keys:
\node[logic gate inverted radius=4pt] at (0,-1) {B};
\end{tikzpicture}
\end{codeexample}
-\end{key}
-
-\begin{key}{/pgf/logic gate input sep=\meta{length} (initially .125cm)}
- Set the distance between the \emph{centers} of the inputs to the
- logic gate.
+ %
+ \end{key}
+ \begin{key}{/pgf/logic gate input sep=\meta{length} (initially .125cm)}
+ Set the distance between the \emph{centers} of the inputs to the logic
+ gate.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[minimum size=0.75cm]
\draw [help lines] grid (3,2);
@@ -1178,44 +1201,40 @@ centers of the inputs can be customized using the following keys:
(B.input \a -| 2,0) -- (B.input \a);
\end{tikzpicture}
\end{codeexample}
-\end{key}
-
- \pgfname{} will increase the size of the
- logic gate to accommodate the number of inputs, and the size
- of the inverted radius and the separation between the inputs.
- However with all shapes in this library, any increase in size
- (including any minimum size requirements) will be applied so that
- the default aspect ratio is unaltered. This means that changing
- the height will change the width and vice versa.
+ %
+ \end{key}
+ \pgfname{} will increase the size of the logic gate to accommodate the
+ number of inputs, and the size of the inverted radius and the separation
+ between the inputs. However with all shapes in this library, any increase
+ in size (including any minimum size requirements) will be applied so that
+ the default aspect ratio is unaltered. This means that changing the height
+ will change the width and vice versa.
\end{pgflibrary}
\subsubsection{Implementation: The US-Style Logic Gates Shape Library}
\begin{pgflibrary}{shapes.gates.logic.US}
- This library provides ``American'' logic gate shapes whose names are
- suffixed with the identifier |US|. Additionally,
- alternative |and| and |nand| gates are provided which are based on the
- logic symbols used in A. Croft, R. Davidson, and M. Hargreaves (1992),
- \emph{Engineering Mathematics}, Addison-Wesley, 82--95. These two
- shapes are suffixed with |CDH|.
-
- The ``compass point'' anchors apply to the main part of the shape
- and do not include any inverted inputs or outputs. This library
- provides an additional feature to facilitate the relative positioning
- of logic gates:
-
-\begin{key}{/pgf/logic gate anchors use bounding box=\meta{boolean} (initially false)}
- When set to |true| this key will ensure that the
- compass point anchors use the bounding rectangle of the
- main shape, which, ignore any inverted inputs or outputs, but
- includes any |outer sep|.
- This \emph{only} affects the compass point anchors
- and is not set on a shape by shape basis: whether the bounding
- box is used is determined by value of this key when the anchor
- is accessed.
-
+ This library provides ``American'' logic gate shapes whose names are
+ suffixed with the identifier |US|. Additionally, alternative |and| and
+ |nand| gates are provided which are based on the logic symbols used in A.
+ Croft, R. Davidson, and M. Hargreaves (1992), \emph{Engineering
+ Mathematics}, Addison-Wesley, 82--95. These two shapes are suffixed with
+ |CDH|.
+
+ The ``compass point'' anchors apply to the main part of the shape and do
+ not include any inverted inputs or outputs. This library provides an
+ additional feature to facilitate the relative positioning of logic gates:
+
+ \begin{key}{/pgf/logic gate anchors use bounding box=\meta{boolean} (initially false)}
+ When set to |true| this key will ensure that the compass point anchors
+ use the bounding rectangle of the main shape, which, ignore any
+ inverted inputs or outputs, but includes any |outer sep|. This
+ \emph{only} affects the compass point anchors and is not set on a shape
+ by shape basis: whether the bounding box is used is determined by value
+ of this key when the anchor is accessed.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[minimum height=1.5cm]
\node[xnor gate US, draw, gray!50,line width=2pt] (A) {};
@@ -1226,35 +1245,35 @@ centers of the inputs can be customized using the following keys:
(A.\a) circle(\z);
\end{tikzpicture}
\end{codeexample}
+ %
+ \end{key}
-\end{key}
-
- The library defines a number of shapes. For each shape the allowed
- number of inputs is also shown:
- \begin{itemize}
- \item |and gate US|, two or more inputs
- \item |and gate CDH|, two or more inputs
- \item |nand gate US|, two or more inputs
- \item |nand gate CDH|, two or more inputs
- \item |or gate US|, two or more inputs
- \item |nor gate US|, two or more Inputs
- \item |xor gate US|, two inputs
- \item |xnor gate US|, two inputs
- \item |not gate US|, one input
- \item |buffer gate US|, one input
- \end{itemize}
-
- In the following, we only have a detailed look at the anchors
- defined by one of them. We choose the |nand gate US| because it
- shows all the ``interesting'' anchors.
-
- \begin{shape}{nand gate US}
- This shape is a nand gate, which supports two or more inputs. If
- less than two inputs are specified an error will result.
- The anchors for this gate with two
- non-inverted inputs (using the normal compass point anchors) are
- shown below. Anchor |30| is an example of a border anchor.
-
+ The library defines a number of shapes. For each shape the allowed number
+ of inputs is also shown:
+ %
+ \begin{itemize}
+ \item |and gate US|, two or more inputs
+ \item |and gate CDH|, two or more inputs
+ \item |nand gate US|, two or more inputs
+ \item |nand gate CDH|, two or more inputs
+ \item |or gate US|, two or more inputs
+ \item |nor gate US|, two or more Inputs
+ \item |xor gate US|, two inputs
+ \item |xnor gate US|, two inputs
+ \item |not gate US|, one input
+ \item |buffer gate US|, one input
+ \end{itemize}
+
+ In the following, we only have a detailed look at the anchors defined by
+ one of them. We choose the |nand gate US| because it shows all the
+ ``interesting'' anchors.
+
+ \begin{shape}{nand gate US}
+ This shape is a nand gate, which supports two or more inputs. If less
+ than two inputs are specified an error will result. The anchors for
+ this gate with two non-inverted inputs (using the normal compass point
+ anchors) are shown below. Anchor |30| is an example of a border anchor.
+ %
\begin{codeexample}[]
\Huge
\begin{tikzpicture}
@@ -1273,97 +1292,93 @@ centers of the inputs can be customized using the following keys:
\end{tikzpicture}
\end{codeexample}
- (For the definition of the |shape example| style, see
- Section~\ref{section-libs-shapes}.)
- \end{shape}
+ (For the definition of the |shape example| style, see
+ Section~\ref{section-libs-shapes}.)
+ \end{shape}
\end{pgflibrary}
-
\subsubsection{Implementation: The IEC-Style Logic Gates Shape Library}
\begin{pgflibrary}{shapes.gates.logic.IEC}
- This library provides rectangular logic gate shapes. These shapes
- are suffixed with |IEC| as they are based on gates recommended by
- the International Electrotechnical Commission.
-
- By default each gate is drawn with a symbol, $\char`\&$ for |and| and
- |nand| gates, $\geq1$ for |or| and |nor| gates, $1$ for |not| and
- |buffer| gates, and $=1$ for |xor| and |xnor| gates. These symbols
- are drawn automatically (internally they are drawn using the
- ``foreground'' path), and are not strictly speaking part of the node
- contents. However, the gate is enlarged to make sure the symbols are
- within the border of the node.
- It is possible to change
- the symbols and their position within the node using the following
- keys:
-
-\begin{key}{/pgf/and gate IEC symbol=\meta{text} (initially \char`\\char\char`\`\char`\\\char`\&)}
- Set the symbol for the |and gate|. Note that if the node is filled,
- this color will be used for the symbol, making it invisible, so
- it will be necessary set \meta{text} to something like
- |\color{black}\char`\&|. Alternatively, the
- |logic gate IEC symbol color| key can be used to set the color
- of all symbols simultaneously.
-
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |and gate symbol|.
-\end{key}
-
-\begin{key}{/pgf/nand gate IEC symbol=\meta{text} (initially \char`\\char\char`\`\char`\\\char`\&)}
- Set the symbol for the |nand gate|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |nand gate symbol|.
-\end{key}
+ This library provides rectangular logic gate shapes. These shapes are
+ suffixed with |IEC| as they are based on gates recommended by the
+ International Electrotechnical Commission.
+
+ By default each gate is drawn with a symbol, $\char`\&$ for |and| and
+ |nand| gates, $\geq1$ for |or| and |nor| gates, $1$ for |not| and |buffer|
+ gates, and $=1$ for |xor| and |xnor| gates. These symbols are drawn
+ automatically (internally they are drawn using the ``foreground'' path),
+ and are not strictly speaking part of the node contents. However, the gate
+ is enlarged to make sure the symbols are within the border of the node. It
+ is possible to change the symbols and their position within the node using
+ the following keys:
+
+ \begin{key}{/pgf/and gate IEC symbol=\meta{text} (initially \char`\\char\char`\`\char`\\\char`\&)}
+ Set the symbol for the |and gate|. Note that if the node is filled,
+ this color will be used for the symbol, making it invisible, so it will
+ be necessary set \meta{text} to something like |\color{black}\char`\&|.
+ Alternatively, the |logic gate IEC symbol color| key can be used to set
+ the color of all symbols simultaneously.
+
+ In \tikzname, when the |use IEC style logic gates| key has been used,
+ this key can be replaced by |and gate symbol|.
+ \end{key}
-\begin{key}{/pgf/or gate IEC symbol=\meta{text} (initially \char`\$\char`\\geq1\char`\$)}
- Set the symbol for the |or gate|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |or gate symbol|.
-\end{key}
+ \begin{key}{/pgf/nand gate IEC symbol=\meta{text} (initially \char`\\char\char`\`\char`\\\char`\&)}
+ Set the symbol for the |nand gate|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |nand gate symbol|.
+ \end{key}
-\begin{key}{/pgf/nor gate IEC symbol=\meta{text} (initially \char`\$\char`\\geq1\char`\$)}
- Set the symbol for the |nor gate|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |nor gate symbol|.
-\end{key}
+ \begin{key}{/pgf/or gate IEC symbol=\meta{text} (initially \char`\$\char`\\geq1\char`\$)}
+ Set the symbol for the |or gate|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |or gate symbol|.
+ \end{key}
-\begin{key}{/pgf/xor gate IEC symbol=\meta{text} (initially \char`\{\char`\$=1\char`\$\char`\})}
- Set the symbol for the |xor gate|. Note the necessity for braces,
- as the symbol contains |=|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |xor gate symbol|.
-\end{key}
+ \begin{key}{/pgf/nor gate IEC symbol=\meta{text} (initially \char`\$\char`\\geq1\char`\$)}
+ Set the symbol for the |nor gate|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |nor gate symbol|.
+ \end{key}
-\begin{key}{/pgf/xnor gate IEC symbol=\meta{text} (initially \char`\{\char`\$=1\char`\$\char`\})}
- Set the symbol for the |xnor gate|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |xnor gate symbol|.
-\end{key}
+ \begin{key}{/pgf/xor gate IEC symbol=\meta{text} (initially \char`\{\char`\$=1\char`\$\char`\})}
+ Set the symbol for the |xor gate|. Note the necessity for braces, as
+ the symbol contains |=|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |xor gate symbol|.
+ \end{key}
-\begin{key}{/pgf/not gate IEC symbol=\meta{text} (initially 1)}
- Set the symbol for the |not gate|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |not gate symbol|.
-\end{key}
+ \begin{key}{/pgf/xnor gate IEC symbol=\meta{text} (initially \char`\{\char`\$=1\char`\$\char`\})}
+ Set the symbol for the |xnor gate|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |xnor gate symbol|.
+ \end{key}
-\begin{key}{/pgf/buffer gate IEC symbol=\meta{text} (initially 1)}
- Set the symbol for the |buffer gate|.
- In \tikzname, when the |use IEC style logic gates| key has been
- used, this key can be replaced by |buffer gate symbol|.
-\end{key}
+ \begin{key}{/pgf/not gate IEC symbol=\meta{text} (initially 1)}
+ Set the symbol for the |not gate|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |not gate symbol|.
+ \end{key}
-\begin{key}{/pgf/logic gate IEC symbol align=\meta{align} (initially top)}
- Set the alignment of the logic gate symbol (in \tikzname, when the
- |use IEC style logic gates| key has been used, |IEC| can be omitted.
- The specification in \meta{align} is a comma separated list from
- |top|, |bottom|, |left| or |right|. The distance between the border
- of the node and the outer edge of the symbol is determined by the values
- of the |inner xsep| and |inner ysep|.
+ \begin{key}{/pgf/buffer gate IEC symbol=\meta{text} (initially 1)}
+ Set the symbol for the |buffer gate|. In \tikzname, when the
+ |use IEC style logic gates| key has been used, this key can be replaced
+ by |buffer gate symbol|.
+ \end{key}
+ \begin{key}{/pgf/logic gate IEC symbol align=\meta{align} (initially top)}
+ Set the alignment of the logic gate symbol (in \tikzname, when the
+ |use IEC style logic gates| key has been used, |IEC| can be omitted).
+ The specification in \meta{align} is a comma separated list from |top|,
+ |bottom|, |left| or |right|. The distance between the border of the
+ node and the outer edge of the symbol is determined by the values of
+ the |inner xsep| and |inner ysep|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}[minimum size=1cm, use IEC style logic gates]
- \tikzset{every node/.style={nor gate, draw}}
+ \tikzset{every node/.style={nor gate, draw}}
\node (A) at (0,1.5) {};
\node [logic gate symbol align={bottom, right}] (B) at (0,0) {};
\foreach \g in {A, B}{
@@ -1373,37 +1388,36 @@ centers of the inputs can be customized using the following keys:
}
\end{tikzpicture}
\end{codeexample}
+ %
+ \end{key}
-\end{key}
-
-
-\begin{key}{/pgf/logic gate IEC symbol color=\meta{color}}
- This key sets the color for all symbols simultaneously. This color
- can be overridden on a case by case basis by specifying a color
- when setting the symbol text.
-\end{key}
-
- The library defines the following shapes:
- \begin{itemize}
- \item |and gate IEC|, two or more inputs
- \item |nand gate IEC|, two or more inputs
- \item |or gate IEC|, two or more inputs
- \item |nor gate IEC|, two or more inputs
- \item |xor gate IEC|, two inputs
- \item |xnor gate IEC|, two inputs
- \item |not gate IEC|, one input
- \item |buffer gate IEC|, one input
- \end{itemize}
-
- Again, we only have a look at the nand-gate in more detail:
-
-\begin{shape}{nand gate IEC}
- This shape is a nand gate. It supports two or more inputs.
- If less than two inputs are specified an error will result.
- The anchors for this gate with two
- inverted inputs are
- shown below. Anchor |30| is an example of a border anchor.
+ \begin{key}{/pgf/logic gate IEC symbol color=\meta{color}}
+ This key sets the color for all symbols simultaneously. This color can
+ be overridden on a case by case basis by specifying a color when
+ setting the symbol text.
+ \end{key}
+ The library defines the following shapes:
+ %
+ \begin{itemize}
+ \item |and gate IEC|, two or more inputs
+ \item |nand gate IEC|, two or more inputs
+ \item |or gate IEC|, two or more inputs
+ \item |nor gate IEC|, two or more inputs
+ \item |xor gate IEC|, two inputs
+ \item |xnor gate IEC|, two inputs
+ \item |not gate IEC|, one input
+ \item |buffer gate IEC|, one input
+ \end{itemize}
+
+ Again, we only have a look at the nand-gate in more detail:
+
+ \begin{shape}{nand gate IEC}
+ This shape is a nand gate. It supports two or more inputs. If less than
+ two inputs are specified an error will result. The anchors for this
+ gate with two inverted inputs are shown below. Anchor |30| is an
+ example of a border anchor.
+ %
\begin{codeexample}[]
\Huge
\begin{tikzpicture}
@@ -1423,100 +1437,100 @@ centers of the inputs can be customized using the following keys:
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
-\end{shape}
+ \end{shape}
\end{pgflibrary}
-
-
\subsection{Electrical Engineering Circuits}
\subsubsection{Overview}
-An \emph{electrical engineering circuit} contains symbols like
-resistors or capacitors or voltage sources and annotations like the
-two arrows pointing toward an element whose behaviour is light
-dependent. The electrical engineering libraries, abbreviated
-ee-libraries, provide such symbols and annotations.
+An \emph{electrical engineering circuit} contains symbols like resistors or
+capacitors or voltage sources and annotations like the two arrows pointing
+toward an element whose behaviour is light dependent. The electrical
+engineering libraries, abbreviated ee-libraries, provide such symbols and
+annotations.
-Just as for logical gates, there are different ways of drawing
-ee-symbols. Currently, there is one main library for drawing circuits,
-which uses the graphics from the International Electrotechnical
-Commission, but you can add your own libs. This is why, just as for
-logical gates, there is a base library and more specific libraries.
+Just as for logical gates, there are different ways of drawing ee-symbols.
+Currently, there is one main library for drawing circuits, which uses the
+graphics from the International Electrotechnical Commission, but you can add
+your own libs. This is why, just as for logical gates, there is a base library
+and more specific libraries.
\begin{tikzlibrary}{circuits.ee}
- This library declares the ee symbols, but (mostly) does not
- provide the symbol graphics, which is left to the sublibraries.
- Just like the logical gates library, a key is defined that is
- normally only used internally:
- \begin{key}{/tikz/circuit ee}
- This style calls the keys |circuit| (which internally calls
- |every circuit| and the following style:
- \begin{stylekey}{/tikz/every circuit ee}
- Use this key to configure the appearance of logical circuits.
- \end{stylekey}
- \end{key}
+ This library declares the ee symbols, but (mostly) does not provide the
+ symbol graphics, which is left to the sublibraries. Just like the logical
+ gates library, a key is defined that is normally only used internally:
+ %
+ \begin{key}{/tikz/circuit ee}
+ This style calls the keys |circuit| (which internally calls
+ |every circuit| and the following style:
+ %
+ \begin{stylekey}{/tikz/every circuit ee}
+ Use this key to configure the appearance of logical circuits.
+ \end{stylekey}
+ \end{key}
- The library also declares some standard annotations and units.
+ The library also declares some standard annotations and units.
\end{tikzlibrary}
-As for logical circuits, to draw a circuit the first step is to
-include a library containing the symbols graphics. Currently, you have to
-include |circuits.ee.IEC|.
+As for logical circuits, to draw a circuit the first step is to include a
+library containing the symbols graphics. Currently, you have to include
+|circuits.ee.IEC|.
\begin{tikzlibrary}{circuit.ee.IEC}
- When this library is loaded, you can use the following style:
- \begin{key}{/tikz/circuit ee IEC}
- This style calls |circuit ee| and installs the IEC-like
- graphics for the logical symbols like |resistor|.
- \end{key}
+ When this library is loaded, you can use the following style:
+ %
+ \begin{key}{/tikz/circuit ee IEC}
+ This style calls |circuit ee| and installs the IEC-like graphics for
+ the logical symbols like |resistor|.
+ \end{key}
\end{tikzlibrary}
-Inside the |circuit ee IEC| scope, you can now use the keys for
-symbols, units, and annotations listed in the later sections. We have
-a more detailed look at one of each of them, all the others work the
-same way.
+Inside the |circuit ee IEC| scope, you can now use the keys for symbols, units,
+and annotations listed in the later sections. We have a more detailed look at
+one of each of them, all the others work the same way.
-Let us start with an example of a symbol: the resistor symbol. The
-other predefined symbols are listed in
-Section~\ref{section-circuits-ee-symbols} and later sections.
+Let us start with an example of a symbol: the resistor symbol. The other
+predefined symbols are listed in Section~\ref{section-circuits-ee-symbols} and
+later sections.
\begin{key}{/tikz/resistor=\opt{\meta{options}}}
- This key should be used with a |node| path command or with the |to|
- path command.
+ This key should be used with a |node| path command or with the |to| path
+ command.
- \medskip\textbf{Using the Key with Normal Nodes.}
- When used with a node, it will cause this node to
- ``look like'' a resistor (by default, in the IEC library, this is
- just a simple rectangle).
+ \medskip\textbf{Using the Key with Normal Nodes.}
+ When used with a node, it will cause this node to ``look like'' a resistor
+ (by default, in the IEC library, this is just a simple rectangle).
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
\node [resistor] {};
\end{codeexample}
- Unlike normal nodes, a resistor node generally should not take any
- text (as in |node [resistor] {foo}|). Instead, the labeling of
- resistors should be done using the |label|, |info| and |ohm|
- options.
+ Unlike normal nodes, a resistor node generally should not take any text (as
+ in |node [resistor] {foo}|). Instead, the labeling of resistors should be
+ done using the |label|, |info| and |ohm| options.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
\node [resistor,ohm=5] {};
\end{codeexample}
- The \meta{options} make no real sense when the |resistor| option is
- used with a normal node, you can just as well given them to the
- |node| itself. Thus, the following has the same effect as the above
- example:
+ The \meta{options} make no real sense when the |resistor| option is used
+ with a normal node, you can just as well given them to the |node| itself.
+ Thus, the following has the same effect as the above example:
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
\node [resistor={ohm=5}] {};
\end{codeexample}
- In a circuit, you will often wish to rotate elements. For this, the
- options |point up|, |point down|, |point left| or |point right| may
- be especially useful. They are just shorthands for appropriate
- rotations like |rotate=90|.
+ In a circuit, you will often wish to rotate elements. For this, the options
+ |point up|, |point down|, |point left| or |point right| may be especially
+ useful. They are just shorthands for appropriate rotations like
+ |rotate=90|.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] {
\node (R1) [resistor,point up,ohm=5] at (3,1) {};
@@ -1525,107 +1539,111 @@ Section~\ref{section-circuits-ee-symbols} and later sections.
}
\end{codeexample}
- \medskip\textbf{Using the Key on a To Path.}
- When the |resistor| key is used on a |to| path inside a
- |circuit ee IEC|, the |circuit handle symbol| key is called
- internally. This has a whole bunch of effects:
- \begin{enumerate}
- \item The path currently being constructed is cut up to make place
- for a node.
- \item This node will be a |resistor node| that is rotated so that it
- points ``along'' the path (unless an option like |shift only| or
- an extra rotation is used to change this).
- \item The \meta{options} passed to the |resistor| key are passed on
- to the node.
- \item The \meta{options} are pre-parsed to identify a |pos| key or
- a key like |at start| or |midway|. These keys are used to
- determine where on the |to| path the node will lie.
- \end{enumerate}
-
- Since the \meta{options} of the |resistor| key are passed on to the
- resistor node on the path, you can use it to add labels to the
- node. Here is a simple example:
-
+ \medskip\textbf{Using the Key on a To Path.}
+ When the |resistor| key is used on a |to| path inside a |circuit ee IEC|,
+ the |circuit handle symbol| key is called internally. This has a whole
+ bunch of effects:
+ %
+ \begin{enumerate}
+ \item The path currently being constructed is cut up to make place for
+ a node.
+ \item This node will be a |resistor node| that is rotated so that it
+ points ``along'' the path (unless an option like |shift only| or an
+ extra rotation is used to change this).
+ \item The \meta{options} passed to the |resistor| key are passed on to
+ the node.
+ \item The \meta{options} are pre-parsed to identify a |pos| key or a
+ key like |at start| or |midway|. These keys are used to determine
+ where on the |to| path the node will lie.
+ \end{enumerate}
+
+ Since the \meta{options} of the |resistor| key are passed on to the
+ resistor node on the path, you can use it to add labels to the node. Here
+ is a simple example:
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
\draw (0,0) to [resistor=red] (3,0)
to [resistor={ohm=2\mu}] (3,2);
\end{codeexample}
- You can add multiple labels to a resistor and you can have multiple
- resistors (or other elements) on a single path.
+ You can add multiple labels to a resistor and you can have multiple
+ resistors (or other elements) on a single path.
- \medskip\textbf{Inputs, Outputs, and Anchors.}
- Like the logical gates, all ee-symbols have an |input|
- and an |output| anchor. Special-purpose-nodes may have even more
- anchors of this type. Furthermore, the ee-symbols-nodes also have four
- standard compass direction anchors.
+ \medskip\textbf{Inputs, Outputs, and Anchors.}
+ Like the logical gates, all ee-symbols have an |input| and an |output|
+ anchor. Special-purpose-nodes may have even more anchors of this type.
+ Furthermore, the ee-symbols-nodes also have four standard compass direction
+ anchors.
- \medskip\textbf{Changing the Appearance.}
- To configure the appearance of all |resistor|s, see
- Section~\ref{section-theming-symbols}. You can use the
- \meta{options} to locally change the appearance of a single
- resistor.
+ \medskip\textbf{Changing the Appearance.}
+ To configure the appearance of all |resistor|s, see
+ Section~\ref{section-theming-symbols}. You can use the \meta{options} to
+ locally change the appearance of a single resistor.
\end{key}
-Let us now have a look at an example of a unit: the Ohm unit. The
-other predefined units are listed in Section~\ref{section-circuits-units}.
+Let us now have a look at an example of a unit: the Ohm unit. The other
+predefined units are listed in Section~\ref{section-circuits-units}.
\begin{key}{/tikz/ohm=\meta{value}}
- This key is used to add an |info| label to a node with a special
- text: |$\mathrm{|\meta{value}|\Omega}$|. In other words, the |ohm|
- key can only be used with the options of a node and, when used, it
- will cause the \meta{value} to be placed next to the node, followed
- by $\Omega$. Since the \meta{value} is typeset inside a |\mathrm|
- command, when you write |ohm=5k| you get $\mathrm{5k\Omega}$,
- |ohm=5p| yields $\mathrm{5p\Omega}$, and |ohm=5.6\cdot 10^{2}\mu|
- yields $\mathrm{5.6\cdot 10^{2}\mu\Omega}$.
+ This key is used to add an |info| label to a node with a special text:
+ |$\mathrm{|\meta{value}|\Omega}$|. In other words, the |ohm| key can only
+ be used with the options of a node and, when used, it will cause the
+ \meta{value} to be placed next to the node, followed by $\Omega$. Since the
+ \meta{value} is typeset inside a |\mathrm| command, when you write |ohm=5k|
+ you get $\mathrm{5k\Omega}$, |ohm=5p| yields $\mathrm{5p\Omega}$, and
+ |ohm=5.6\cdot 10^{2}\mu| yields $\mathrm{5.6\cdot 10^{2}\mu\Omega}$.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \draw (0,0) to [resistor={ohm=5M}] (0,2);
\end{codeexample}
- Instead of |ohm| you can also use |ohm'|, which places the label on
- the other side.
+ Instead of |ohm| you can also use |ohm'|, which places the label on the
+ other side.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \draw (0,0) to [resistor={ohm'=5M}] (0,2);
\end{codeexample}
- Finally, there are also keys |ohm sloped| and |ohm' sloped| for
- having the info label rotate together with the main node.
+ Finally, there are also keys |ohm sloped| and |ohm' sloped| for having the
+ info label rotate together with the main node.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
\draw (0,0) to [resistor={ohm sloped=5M}] (0,2)
(2,0) to [resistor={ohm' sloped=6f}] (2,2);
\end{codeexample}
- You can configure the appearance of an Ohm info label using the key
- |every ohm|.
+ You can configure the appearance of an Ohm info label using the key
+ |every ohm|.
\end{key}
-Finally, let us have a look at an annotation: the |light emitting|
-annotation. The other predefined units are listed in
+Finally, let us have a look at an annotation: the |light emitting| annotation.
+The other predefined units are listed in
Section~\ref{section-circuits-annotations}.
\begin{key}{/tikz/light emitting=\opt{\meta{options}}}
- Like a unit, an annotation should be given as an additional option
- to a node. It causes some drawings (in this case, two parallel
- lines) to be placed next to the node.
-
+ Like a unit, an annotation should be given as an additional option to a
+ node. It causes some drawings (in this case, two parallel lines) to be
+ placed next to the node.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC] \draw (0,0) to [diode=light emitting] (2,0);
\end{codeexample}
- The \meta{options} can be used for three different things:
- \begin{enumerate}
- \item You can use keys like |red| to change the appearance of this
- annotation, locally.
- \item You can use keys like |<-| or |-latex| to change the
- direction and kinds of arrows used in the annotation.
- \item You can use info labels like |ohm=5| or |info=foo| inside the
- \meta{options}. These info labels will be added to the main node
- (not to the annotation itself), but the label distance will have
- been changed to accommodate for the space taken up by the
- annotation.
+ The \meta{options} can be used for three different things:
+ %
+ \begin{enumerate}
+ \item You can use keys like |red| to change the appearance of this
+ annotation, locally.
+ \item You can use keys like |<-| or |-latex| to change the direction
+ and kinds of arrows used in the annotation.
+ \item You can use info labels like |ohm=5| or |info=foo| inside the
+ \meta{options}. These info labels will be added to the main node
+ (not to the annotation itself), but the label distance will have
+ been changed to accommodate for the space taken up by the
+ annotation.
+ %
\begin{codeexample}[]
\tikz [circuit ee IEC]
{
@@ -1634,27 +1652,25 @@ Section~\ref{section-circuits-annotations}.
info'=also good}] (2,0);
}
\end{codeexample}
- \end{enumerate}
-
- In addition to |light emitting| there is also a key called
- |light emitting'|, which simply places the annotation on the other
- side of the node.
-
- You can configure the appearance of annotations in three ways:
- \begin{itemize}
- \item You can set the |every circuit annotation| style.
- \item You can set the |every light emitting| style.
- \item You can set the following key:
- \begin{stylekey}{/tikz/annotation arrow}
- This style should set the default |>| arrow to some nice value.
- \end{stylekey}
- \end{itemize}
+ \end{enumerate}
+
+ In addition to |light emitting| there is also a key called
+ |light emitting'|, which simply places the annotation on the other side of
+ the node.
+
+ You can configure the appearance of annotations in three ways:
+ %
+ \begin{itemize}
+ \item You can set the |every circuit annotation| style.
+ \item You can set the |every light emitting| style.
+ \item You can set the following key:
+ %
+ \begin{stylekey}{/tikz/annotation arrow}
+ This style should set the default |>| arrow to some nice value.
+ \end{stylekey}
+ \end{itemize}
\end{key}
-
-
-
-
\def\eelineexample#1#2{%
\texttt{#1}\indexkey{#1}
&
@@ -1693,19 +1709,19 @@ Section~\ref{section-circuits-annotations}.
\subsubsection{Symbols: Indicating Current Directions}
-
\label{section-ee-symbols}
\label{section-circuits-ee-symbols}
-There are two symbols for indicating current directions. These symbols
-are defined directly inside |circuit ee|.
+There \todosp{why two labels? The first doesn't seem to be used.} are two
+symbols for indicating current directions. These symbols are defined directly
+inside |circuit ee|.
\medskip
\noindent
\begin{tabular}{p{5cm}ll}
- \emph{Key} & \emph{Appearance}\\[.25em]
- \eelineexample{/tikz/current direction}{}
- \eelineexample{/tikz/current direction'}{}
+ \emph{Key} & \emph{Appearance}\\[.25em]
+ \eelineexample{/tikz/current direction}{}
+ \eelineexample{/tikz/current direction'}{}
\end{tabular}
\medskip
@@ -1716,22 +1732,21 @@ The examples have been produced by (in essence)
\subsubsection{Symbols: Basic Elements}
The following table show basic symbols as they are depicted inside the
-|circuit ee IEC| environment. To install one of alternate graphics,
-you have to say |set| \meta{symbol name} |graphic=var| \meta{symbol name}
-|IEC graphic|.
+|circuit ee IEC| environment. To install one of alternate graphics, you have to
+say |set| \meta{symbol name} |graphic=var| \meta{symbol name} |IEC graphic|.
\medskip
\noindent
\begin{tabular}{p{5cm}ll}
- \emph{Key} & \emph{Appearance} & \emph{Alternate appearance} \\[.25em]
- \eelineexample{/tikz/resistor}{resistor}
- \eelineexample{/tikz/inductor}{inductor}
- \eelineexample{/tikz/capacitor}{}
- \eelineexample{/tikz/battery}{}
- \eelineexample{/tikz/bulb}{}
- \eelineexample{/tikz/current source}{}
- \eelineexample{/tikz/voltage source}{}
- \eeendexample{/tikz/ground}{}
+ \emph{Key} & \emph{Appearance} & \emph{Alternate appearance} \\[.25em]
+ \eelineexample{/tikz/resistor}{resistor}
+ \eelineexample{/tikz/inductor}{inductor}
+ \eelineexample{/tikz/capacitor}{}
+ \eelineexample{/tikz/battery}{}
+ \eelineexample{/tikz/bulb}{}
+ \eelineexample{/tikz/current source}{}
+ \eelineexample{/tikz/voltage source}{}
+ \eeendexample{/tikz/ground}{}
\end{tabular}
@@ -1761,15 +1776,14 @@ The following table shows contacts as they are depicted inside the
\noindent
\begin{tabular}{p{5cm}ll}
- \emph{Key} & \emph{Appearance} & \emph{Alternate appearance} \\[.25em]
- \eelineexample{/tikz/contact}{}
- \eelineexample{/tikz/make contact}{make contact}
- \eelineexample{/tikz/break contact}{}
+ \emph{Key} & \emph{Appearance} & \emph{Alternate appearance} \\[.25em]
+ \eelineexample{/tikz/contact}{}
+ \eelineexample{/tikz/make contact}{make contact}
+ \eelineexample{/tikz/break contact}{}
\end{tabular}
\subsubsection{Units}
-
\label{section-circuits-units}
The |circuit.ee| library predefines the following unit keys:
@@ -1777,23 +1791,21 @@ The |circuit.ee| library predefines the following unit keys:
\noindent
\begin{tabular}{p{5cm}c}
- \emph{Key} & \emph{Appearance of $1$ unit} \\[.25em]
- \unitexample{/tikz/ampere}
- \unitexample{/tikz/volt}
- \unitexample{/tikz/ohm}
- \unitexample{/tikz/siemens}
- \unitexample{/tikz/henry}
- \unitexample{/tikz/farad}
- \unitexample{/tikz/coulomb}
- \unitexample{/tikz/voltampere}
- \unitexample{/tikz/watt}
- \unitexample{/tikz/hertz}
+ \emph{Key} & \emph{Appearance of $1$ unit} \\[.25em]
+ \unitexample{/tikz/ampere}
+ \unitexample{/tikz/volt}
+ \unitexample{/tikz/ohm}
+ \unitexample{/tikz/siemens}
+ \unitexample{/tikz/henry}
+ \unitexample{/tikz/farad}
+ \unitexample{/tikz/coulomb}
+ \unitexample{/tikz/voltampere}
+ \unitexample{/tikz/watt}
+ \unitexample{/tikz/hertz}
\end{tabular}
-
\subsubsection{Annotations}
-
\label{section-circuits-annotations}
The |circuit.ee.IEC| library defines the following annotations:
@@ -1801,99 +1813,101 @@ The |circuit.ee.IEC| library defines the following annotations:
\noindent
\begin{tabular}{p{5cm}ll}
- \emph{Key} & \emph{Appearance} \\[.25em]
- \annotationexample{/tikz/light emitting}
- \annotationexample{/tikz/light dependent}
- \annotationexample{/tikz/direction info}
- \annotationexample{/tikz/adjustable}
+ \emph{Key} & \emph{Appearance} \\[.25em]
+ \annotationexample{/tikz/light emitting}
+ \annotationexample{/tikz/light dependent}
+ \annotationexample{/tikz/direction info}
+ \annotationexample{/tikz/adjustable}
\end{tabular}
\medskip
The lines have been produced using, in essence,
+%
\begin{codeexample}[code only]
\draw (0,0) to [resistor=light emitting] (2,0) to [diode=light emitting'] (4,0);
\end{codeexample}
+%
and similarly for the other annotations.
\subsubsection{Implementation: The EE-Symbols Shape Library}
-The \tikzname\ libraries depend on two shape libraries, which are
-included automatically. Usually, you will not need to use these shapes
-directly.
+The \tikzname\ libraries depend on two shape libraries, which are included
+automatically. Usually, you will not need to use these shapes directly.
\begin{pgflibrary}{shapes.gates.ee}
- This library defines basic shapes that can be used by all ee-circuit
- libraries. Currently, it defines the following shapes:
- \begin{itemize}
- \item |rectangle ee|
- \item |circle ee|
- \item |direction ee|
- \end{itemize}
- Additionally, the library defines the following arrow tip:
- The |direction ee| arrow tip is basically the same as a |triangle 45|
- arrow tip with rounded joins.
-
- \begin{tabular}{ll}
- \symarrow{direction ee}
- \end{tabular}
-
- However, unlike normal arrow tips, its size does \emph{not} depend on
- the current line width. Rather, it depends on the value of its
- arrow options, which should be set to the desired size. Thus, you
- should say something like |\pgfsetarrowoptions{direction ee}{5pt}| to
- set the size of the arrow.
+ This library defines basic shapes that can be used by all ee-circuit
+ libraries. Currently, it defines the following shapes:
+ %
+ \begin{itemize}
+ \item |rectangle ee|
+ \item |circle ee|
+ \item |direction ee|
+ \end{itemize}
+ %
+ Additionally, the library defines the following arrow tip: The
+ |direction ee| arrow tip is basically the same as a |triangle 45| arrow tip
+ with rounded joins.
+
+ \begin{tabular}{ll}
+ \symarrow{direction ee}
+ \end{tabular}
+
+ However, unlike normal arrow tips, its size does \emph{not} depend on the
+ current line width. Rather, it depends on the value of its arrow options,
+ which should be set to the desired size. Thus, you should say something
+ like |\pgfsetarrowoptions{direction ee}{5pt}| to set the size of the arrow.
\end{pgflibrary}
\begin{shape}{rectangle ee}
- This shape is completely identical to a normal |rectangle|, only
- there are two additional anchors: The |input| anchor is an alias for
- the |west| anchor, while the |output| anchor is an alias for the
- |east| anchor.
+ This shape is completely identical to a normal |rectangle|, only there are
+ two additional anchors: The |input| anchor is an alias for the |west|
+ anchor, while the |output| anchor is an alias for the |east| anchor.
\end{shape}
\begin{shape}{circle ee}
- Like the |rectangle ee| shape, only for circles.
+ Like the |rectangle ee| shape, only for circles.
\end{shape}
\begin{shape}{direction ee}
- This shape is rather special. It is intended to be used to ``turn an
- arrow tip into a shape.'' First, you should set the following key to
- the name of an arrow tip:
- \begin{key}{/pgf/direction ee arrow=\meta{right arrow tip name}}
- The value of this key will be used for the arrow tip depicted in
- an |direction ee| shape.
- \end{key}
- When a node of shape |direction ee| is created, several things
- happen:
- \begin{enumerate}
- \item The size of the shape is computed according to the following
- rules: The width of the shape is set up so that the left border of
- the shape is at the left end of the arrow tip and the right border
- is at the right end of the arrow tip. These left and right
- ``ends'' of the arrow are the tip end and the back end specified
- by the arrow itself (see Section~\ref{section-arrow-terminology}
- for details). You usually need not worry about this width
- setting.
-
- By comparison, the height of the arrow is given by the current
- setting of |minimum height|. Thus, this key must have been set up
- correctly to reflect the ``real'' height of the arrow tip. The
- reason is that the height of an arrow is not specified when arrows
- are declared and is, thus, not available, here.
-
- Possibly, the height computation will change in the future to
- reflect the real height of the arrow, so you should generally
- set up the |minimum height| to be the same as the real height.
- \item A straight line from left to right inside the shape's
- boundaries is added to the background path.
- \item The arrow tip, pointing right, is drawn before the background
- path.
- \end{enumerate}
- The anchors of this shape are just the compass anchors, which lie on
- a rectangle whose width and height are the above-computed height and
- width.
-
+ This shape is rather special. It is intended to be used to ``turn an arrow
+ tip into a shape''. First, you should set the following key to the name of
+ an arrow tip:
+ %
+ \begin{key}{/pgf/direction ee arrow=\meta{right arrow tip name}}
+ The value of this key will be used for the arrow tip depicted in an
+ |direction ee| shape.
+ \end{key}
+ %
+ When a node of shape |direction ee| is created, several things happen:
+ %
+ \begin{enumerate}
+ \item The size of the shape is computed according to the following
+ rules: The width of the shape is set up so that the left border of
+ the shape is at the left end of the arrow tip and the right border
+ is at the right end of the arrow tip. These left and right ``ends''
+ of the arrow are the tip end and the back end specified by the
+ arrow itself (see Section~\ref{section-arrow-terminology} for
+ details). You usually need not worry about this width setting.
+
+ By comparison, the height of the arrow is given by the current
+ setting of |minimum height|. Thus, this key must have been set up
+ correctly to reflect the ``real'' height of the arrow tip. The
+ reason is that the height of an arrow is not specified when arrows
+ are declared and is, thus, not available, here.
+
+ Possibly, the height computation will change in the future to
+ reflect the real height of the arrow, so you should generally set
+ up the |minimum height| to be the same as the real height.
+ \item A straight line from left to right inside the shape's boundaries
+ is added to the background path.
+ \item The arrow tip, pointing right, is drawn before the background
+ path.
+ \end{enumerate}
+ %
+ The anchors of this shape are just the compass anchors, which lie on a
+ rectangle whose width and height are the above-computed height and width.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\pgfsetarrowoptions{direction ee}{6cm}
@@ -1917,38 +1931,40 @@ directly.
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
+ %
\end{shape}
\subsubsection{Implementation: The IEC-Style EE-Symbols Shape Library}
\begin{pgflibrary}{shapes.gates.ee.IEC}
- This library defines shapes for depicting ee symbols according to
- the IEC recommendations. These shapes will typically be
- used in conjunction with the graphic mechanism detailed earlier, but
- you can also used them directly.
+ This library defines shapes for depicting ee symbols according to the IEC
+ recommendations. These shapes will typically be used in conjunction with
+ the graphic mechanism detailed earlier, but you can also used them
+ directly.
\end{pgflibrary}
\begin{shape}{generic circle IEC}
- This shape inherits from |circle ee|, which in turn is just a normal
- |circle| with additional |input| and |output| anchors at the left
- and right ends. However, additionally, this shape allows you to
- specify a path that should be added before the background path using
- the following key:
- \begin{key}{/pgf/generic circle IEC/before background=\meta{code}}
- When a node of shape |generic circle IEC| is created, the current
- setting of this key is used as the ``before background path.''
- This means that after the circle's background has been
- drawn/filled/whatever, the \meta{code} is executed.
-
- When the \meta{code} is executed, the coordinate system will have
- been transformed in such a way that the point
- $(1\mathrm{pt},0\mathrm{pt})$ lies at the right end of the circle
- and $(0\mathrm{pt},1\mathrm{pt})$ lies at the top of the
- circle. (More precisely, these points will lie exactly on the
- middle of the radial line.)
- \end{key}
- Here is an examples of how to use this shape:
+ This shape inherits from |circle ee|, which in turn is just a normal
+ |circle| with additional |input| and |output| anchors at the left and right
+ ends. However, additionally, this shape allows you to specify a path that
+ should be added before the background path using the following key:
+ %
+ \begin{key}{/pgf/generic circle IEC/before background=\meta{code}}
+ When a node of shape |generic circle IEC| is created, the current
+ setting of this key is used as the ``before background path''. This
+ means that after the circle's background has been
+ drawn/filled/whatever, the \meta{code} is executed.
+
+ When the \meta{code} is executed, the coordinate system will have been
+ transformed in such a way that the point $(1\mathrm{pt},0\mathrm{pt})$
+ lies at the right end of the circle and $(0\mathrm{pt},1\mathrm{pt})$
+ lies at the top of the circle. (More precisely, these points will lie
+ exactly on the middle of the radial line.)
+ \end{key}
+ %
+ Here is an examples of how to use this shape:
+ %
\begin{codeexample}[]
\tikz \node [generic circle IEC,
/pgf/generic circle IEC/before background={
@@ -1960,15 +1976,15 @@ directly.
},
draw] {Hello world};
\end{codeexample}
+ %
\end{shape}
-
\begin{shape}{generic diode IEC}
- This shape is used to depict diodes. The main shape is taken up by a
- ``right pointing'' triangle. The anchors are positioned on the border of
- a rectangle around the diode, see the below example. The
- diode's size is based on the current settings of |minimum width| and
- |minimum height|.
+ This shape is used to depict diodes. The main shape is taken up by a
+ ``right pointing'' triangle. The anchors are positioned on the border of a
+ rectangle around the diode, see the below example. The diode's size is
+ based on the current settings of |minimum width| and |minimum height|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\node[name=s,shape=generic diode IEC,shape example,minimum size=6cm] {};
@@ -1982,22 +1998,23 @@ directly.
\end{tikzpicture}
\end{codeexample}
- This shape, like the |generic circle IEC| shape, is generic in the
- sense that there is a special key that is used for the before
- background drawings:
- \begin{key}{/pgf/generic diode IEC/before background=\meta{code}}
- Similarly to the |generic circle IEC| shape, when a node of shape
- |generic diode IEC| is created, the current setting of this key is
- used as the ``before background path.''
- When the \meta{code} is executed, the coordinate system will have
- been transformed in such a way that the origin is at the ``tip''
- of the diode's triangle, the point $(0\mathrm{pt},1\mathrm{pt})$
- is exactly half the diode's height above this origin, and
- the point $(1\mathrm{pt},0\mathrm{pt})$ is half the diode's height
- to the right of the origin.
-
- The idea is that you use this key to draw different kinds of diode
- endings.
+ This shape, like the |generic circle IEC| shape, is generic in the sense
+ that there is a special key that is used for the before background
+ drawings:
+ %
+ \begin{key}{/pgf/generic diode IEC/before background=\meta{code}}
+ Similarly to the |generic circle IEC| shape, when a node of shape
+ |generic diode IEC| is created, the current setting of this key is used
+ as the ``before background path''. When the \meta{code} is executed,
+ the coordinate system will have been transformed in such a way that the
+ origin is at the ``tip'' of the diode's triangle, the point
+ $(0\mathrm{pt},1\mathrm{pt})$ is exactly half the diode's height above
+ this origin, and the point $(1\mathrm{pt},0\mathrm{pt})$ is half the
+ diode's height to the right of the origin.
+
+ The idea is that you use this key to draw different kinds of diode
+ endings.
+ %
\begin{codeexample}[]
\tikz \node [minimum size=1cm,generic diode IEC,
/pgf/generic diode IEC/before background={
@@ -2011,15 +2028,14 @@ directly.
},
draw] {};
\end{codeexample}
- \end{key}
+ \end{key}
\end{shape}
-
-
\begin{shape}{breakdown diode IEC}
- This shape is used to depict a bidirectional breakdown diode. The
- diode's size is based on the current settings of |minimum width| and
- |minimum height|.
+ This shape is used to depict a bidirectional breakdown diode. The diode's
+ size is based on the current settings of |minimum width| and
+ |minimum height|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\node[name=s,shape=breakdown diode IEC,shape example,minimum width=6cm,minimum height=4cm] {};
@@ -2032,22 +2048,23 @@ directly.
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
+ %
\end{shape}
\begin{shape}{var resistor IEC}
- This shape is used to depict a variant version of a resistor. Its
- size is computed as for a rectangle (thus, its size depends things
- like the |minimum height|). Then, inside this rectangle, a
- background path is set up according to the following rule: Starting
- from the left end, zigzag segments are added to the path. Each
- segment consists of a line at a 45 degree angle going up to the top
- of the rectangle, then going down to the bottom, then going up to
- mid height of the node. As many segments as possible are put inside
- as possible. The last segment is then connected to the output anchor
- via a straight line.
-
- All of this means that, in general, the shape should be much wider
- than high.
+ This shape is used to depict a variant version of a resistor. Its size is
+ computed as for a rectangle (thus, its size depends things like the
+ |minimum height|). Then, inside this rectangle, a background path is set up
+ according to the following rule: Starting from the left end, zigzag
+ segments are added to the path. Each segment consists of a line at a 45
+ degree angle going up to the top of the rectangle, then going down to the
+ bottom, then going up to mid height of the node. As many segments as
+ possible are put inside as possible. The last segment is then connected to
+ the output anchor via a straight line.
+
+ All of this means that, in general, the shape should be much wider than
+ high.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\node[name=s,shape=var resistor IEC,shape example,minimum width=7cm,minimum height=1cm] {};
@@ -2060,20 +2077,20 @@ directly.
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
+ %
\end{shape}
-
\begin{shape}{inductor IEC}
- This shape is used to depict an inductor, using a bumpy line. Its
- size is computed as follows: Any text and |inner sep| are ignored
- (and should normally not be given). The |minimum height| plus
- (twice) the |outer ysep| specify the distance between the |north|
- and |south| anchors, similarly for the |minimum width| plus the
- |outer xsep| for the |east| and |west|.
- The bumpy line is drawn starting from the lower left corner to the
- lower right corner with bumps being half-circles whose height is
- exactly the |minimum height|. The |center| of the shape is just
- above the |south| anchor, at a distance of the |outer ysep|.
+ This shape is used to depict an inductor, using a bumpy line. Its size is
+ computed as follows: Any text and |inner sep| are ignored (and should
+ normally not be given). The |minimum height| plus (twice) the |outer ysep|
+ specify the distance between the |north| and |south| anchors, similarly for
+ the |minimum width| plus the |outer xsep| for the |east| and |west|. The
+ bumpy line is drawn starting from the lower left corner to the lower right
+ corner with bumps being half-circles whose height is exactly the
+ |minimum height|. The |center| of the shape is just above the |south|
+ anchor, at a distance of the |outer ysep|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\node[name=s,shape=inductor IEC,shape example,minimum width=7cm,minimum height=1cm] {};
@@ -2086,15 +2103,16 @@ directly.
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
- Just as for a |var resistor IEC|, as many bumps as possible are
- added and the last bump is connected to the output anchor via a
- straight line.
+ %
+ Just as for a |var resistor IEC|, as many bumps as possible are added and
+ the last bump is connected to the output anchor via a straight line.
\end{shape}
\begin{shape}{capacitor IEC}
- This shape is based on a |rectangle ee|. However, instead of a
- rectangle as the background path, only the ``left and right lines''
- that make up the rectangle are drawn.
+ This shape is based on a |rectangle ee|. However, instead of a rectangle as
+ the background path, only the ``left and right lines'' that make up the
+ rectangle are drawn.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\node[name=s,shape=capacitor IEC,shape example,
@@ -2108,30 +2126,36 @@ directly.
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
+ %
\end{shape}
\begin{shape}{battery IEC}
- This shape is similar to a |capacitor IEC|, however, the right line is
- only half the height of the left line.
+ This shape is similar to a |capacitor IEC|, however, the right line is only
+ half the height of the left line.
+ %
\begin{codeexample}[]
\tikz \node[shape=battery IEC,shape example,minimum size=2cm,
inner sep=0pt] {};
\end{codeexample}
+ %
\end{shape}
\begin{shape}{ground IEC}
- This shape is similar to a |batter IEC|, only three lines of
- different heights are drawn.
+ This shape is similar to a |batter IEC|, only three lines of different
+ heights are drawn.
+ %
\begin{codeexample}[]
\tikz \node[shape=ground IEC,shape example,minimum size=2cm,
inner sep=0pt] {};
\end{codeexample}
+ %
\end{shape}
\begin{shape}{make contact IEC}
- This shape consists of a line going from the lower left corner to
- the upper right corner. The size and anchors of this shape are
- computed in the same way as for an |inductor IEC|.
+ This shape consists of a line going from the lower left corner to the upper
+ right corner. The size and anchors of this shape are computed in the same
+ way as for an |inductor IEC|.
+ %
\begin{codeexample}[]
\begin{tikzpicture}
\node[name=s,shape=make contact IEC,shape example,minimum width=3cm,minimum height=1cm] {};
@@ -2144,25 +2168,28 @@ directly.
node[\placement] {\scriptsize\texttt{(s.\anchor)}};
\end{tikzpicture}
\end{codeexample}
+ %
\end{shape}
\begin{shape}{var make contact IEC}
- This shape works like |make contact IEC|, only a little circle is
- added to the path at the lower left corner. The radius of this
- circle is one twelfth of the width of the node.
+ This shape works like |make contact IEC|, only a little circle is added to
+ the path at the lower left corner. The radius of this circle is one twelfth
+ of the width of the node.
+ %
\begin{codeexample}[]
\tikz \node[shape=var make contact IEC,shape example,
minimum height=1cm,minimum width=3cm,inner sep=0pt] {};
\end{codeexample}
+ %
\end{shape}
\begin{shape}{break contact IEC}
- This shape depicts a contact that can be broken. It works like
- |make contact IEC|.
+ This shape depicts a contact that can be broken. It works like
+ |make contact IEC|.
+ %
\begin{codeexample}[]
\tikz \node[shape=break contact IEC,shape example,
minimum height=1cm,minimum width=3cm,inner sep=0pt] {};
\end{codeexample}
+ %
\end{shape}
-
-\endinput