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authorKarl Berry <karl@freefriends.org>2011-03-22 23:33:58 +0000
committerKarl Berry <karl@freefriends.org>2011-03-22 23:33:58 +0000
commit33fd01046b3caf36764e935001a4b42fb974555c (patch)
treea0b830d3be69b933b61e9798e572f1e253ea4a7a /Master/texmf-dist/tex
parent75cb2e1817d690a7047d0fc8e9506872b16d6fc2 (diff)
mychemistry 1.2 (22mar11)
git-svn-id: svn://tug.org/texlive/trunk@21804 c570f23f-e606-0410-a88d-b1316a301751
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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% ------------------------------------------------------------------------------------- %
+% - myChemistry - mychemistry.sty ----------------------------------------------------- %
+% - Creating reaction schemes with LaTeX and ChemFig ---------------------------------- %
+% ------------------------------------------------------------------------------------- %
+% - Clemens Niederberger -------------------------------------------------------------- %
+% - 2011/03/20 ------------------------------------------------------------------------ %
+% ------------------------------------------------------------------------------------- %
+% - http://www.niederberger-berlin.net/2011/02/latex-mychemistry/ --------------------- %
+% - kontakt@niederberger-berlin.net --------------------------------------------------- %
+% ------------------------------------------------------------------------------------- %
+% - If you have any ideas, questions, suggestions or bugs to report, please feel free - %
+% - to contact me. -------------------------------------------------------------------- %
+% ------------------------------------------------------------------------------------- %
+% - Copyright 2011 Clemens Niederberger - %
+% - - %
+% - This work may be distributed and/or modified under the - %
+% - conditions of the LaTeX Project Public License, either version 1.3 - %
+% - of this license or (at your option) any later version. - %
+% - The latest version of this license is in - %
+% - http://www.latex-project.org/lppl.txt - %
+% - and version 1.3 or later is part of all distributions of LaTeX - %
+% - version 2005/12/01 or later. - %
+% - - %
+% - This work has the LPPL maintenance status `maintained'. - %
+% - - %
+% - The Current Maintainer of this work is Clemens Niederberger. - %
+% - - %
+% - This work consists of the files mychemistry.sty, mychemistry_de.tex and - %
+% - mychemistry_en.tex - %
+% ------------------------------------------------------------------------------------- %
+% - 2011/02/24 version 1.0 - %
+% ------------------------------------------------------------------------------------- %
+% - 2011/03/01 version 1.1 - %
+% - package option `english' added - %
+% - package key `placement' added - %
+% - rxnscheme key `placement' added - %
+% - package key `shade=boolean' changed into package option `shade' - %
+% - package option `nochemexec' added, will prevent mC from loading chemexec - %
+% - 2011/03/20 version 1.2 - %
+% - license changed into LPPL 1.3 or later - %
+% - package option `nocompounds' added, will prevent mC from loading chemcompounds - %
+% - package option `chemstyle' added, will load chemstyle - %
+% - package option `nomhchem' added, will prevent mC from loading mhchem - %
+% - if chemexec isn't loaded either - %
+% - package option `nopackages' added, will prevent mC from loading any - %
+% - chemistry package except chemfig - %
+% - some small issues resolved - %
+% - bug in arrow type <=> resolved - %
+% - arrow argument placement rewritten; two new keys for arrow: `aboveshift' - %
+% - and `belowshift' (causing new problems with alignment, though) - %
+% - wrong arrow alignment (due to last change) mainly resolved (NEEDS pgf v2.10!) - %
+% - => solved wrong branch alignment as well - %
+% - `inner sep' set to 0, arrow, transition & mesomeric adjusted - %
+% - bug in arrow type -|> resolved - %
+% - commands \makevisible / \makeinvisible added - %
+% - arrow key `both' added - %
+% - rxn has now keys instead of an option - %
+% - commands \setrcndist, \setrxnalign, \setschemealign added - %
+% - rxn-, rxnscheme-key align added - %
+% ------------------------------------------------------------------------------------- %
+% - TODO - %
+% - make the arrow type {-|>} look nicer - %
+% - work on how chemistry-packages are automatically loaded; - %
+% - add ui for easy handling this issue? (via \mCsetup ?) - %
+% - add rotate=<winkel> for diagonal arrows? - %
+% - add \mCdefault or sim. to restore all default settings? - %
+% ------------------------------------------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\@mc@version{v1.2}
+\def\@mc@date@de{20. M\"arz 2011}
+\def\@mc@date@en{March 20th 2011}
+\ProvidesPackage{mychemistry}[2011/03/20]
+\typeout{myChemistry \@mc@version}
+\typeout{2011/03/20 Clemens Niederberger}
+\typeout{}
+\RequirePackage{ifthen,calc,float}
+\RequirePackage{xkeyval}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Optionen, z.T. auch an chemexec weitergeben
+\newcommand{\@mc@exec@color}{black}
+\newcommand{\@mc@exec@shade}{false}
+\newif\if@usecolor\@usecolorfalse
+% wenn key color, dann Farbe und Option shade=true an chemexec weitergeben
+\define@key[MC]{mychemistry.sty}%
+ {color}{
+ \@usecolortrue
+ \renewcommand{\@mc@exec@color}{#1}
+ \renewcommand{\@mc@exec@shade}{true}
+ }
+% sonst nicht:
+\DeclareOptionX[MC]{nocolor}{
+ \@usecolortrue
+ \renewcommand{\@mc@exec@color}{black}
+ \renewcommand{\@mc@exec@shade}{false}
+}
+% shade separat (de-)aktivieren
+\DeclareOptionX[MC]{shade}{%
+ \renewcommand{\@mc@exec@shade}{true}
+}
+% chemexec abschalten
+\newcommand{\@mc@exec@true}{true}
+\DeclareOptionX[MC]{nochemexec}{%
+ \renewcommand{\@mc@exec@true}{false}
+}
+% mhchem abschalten
+\newcommand{\@mc@mhchem@true}{true}
+\DeclareOptionX[MC]{nomhchem}{%
+ \renewcommand{\@mc@mhchem@true}{false}
+}
+% chemcompounds abschalten
+\newcommand{\@mc@compound@true}{true}
+\DeclareOptionX[MC]{nocompounds}{%
+ \renewcommand{\@mc@compound@true}{false}
+}
+% chemstyle einschalten
+\newcommand{\@mc@chemstyle@true}{false}
+\DeclareOptionX[MC]{chemstyle}{%
+ \renewcommand{\@mc@chemstyle@true}{true}
+}
+% nur `chemfig' laden
+\DeclareOptionX[MC]{nopackages}{%
+ \renewcommand{\@mc@exec@true}{false}
+ \renewcommand{\@mc@mhchem@true}{false}
+ \renewcommand{\@mc@compound@true}{false}
+ \renewcommand{\@mc@chemstyle@true}{false}
+}
+% englische Version von chemexec, englische Variante von myChemistry
+\newcommand{\@mc@exec@english}{}
+\newcommand{\@mc@rs@name}{Reaktionsschema}
+\DeclareOptionX[MC]{english}{
+ \renewcommand{\@mc@exec@english}{,english}
+ \renewcommand{\@mc@rs@name}{Reaction scheme}
+}
+\newcommand{\@mc@rs@placement}{H}
+\newcommand{\@mc@rs@currentplacement}{\@mc@rs@placement}
+\define@key[MC]{mychemistry.sty}{placement}{
+ \renewcommand{\@mc@rs@placement}{#1}
+}
+\ProcessOptionsX[MC]
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% chemstyle laden, falls verfügbar und Option aktiv
+\IfFileExists{chemstyle.sty}{%
+ \ifthenelse{\equal{\@mc@chemstyle@true}{true}}{
+ \@ifpackageloaded{chemstyle}{}{
+ \RequirePackage[varioref=false,floats=float]{chemstyle}
+ \PackageInfo{mychemistry}{You loaded `chemstyle' with options `varioref=false' and `floats=float'. Please be aware, that you might need to restyle the float `table'. Take a look at the `chemstyle' documentation for further information.}
+ }
+ }{}
+}{}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% chemcompounds laden, falls verfügbar
+\IfFileExists{chemcompounds.sty}{%
+ \ifthenelse{\equal{\@mc@compound@true}{true}}{
+ \@ifpackageloaded{chemcompounds}{}{
+ \RequirePackage{chemcompounds}
+ }
+ }{}
+}{
+ \typeout{`chemcompounds' is not installed.}
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% chemfig laden, falls verfügbar
+\IfFileExists{chemfig.sty}{%
+ \@ifpackageloaded{chemfig}{}{
+ \RequirePackage{chemfig}
+ }
+ \usetikzlibrary{arrows,positioning,decorations.pathmorphing,shapes,calc,matrix,chains,scopes}
+}{% sonst Fehlermeldung
+ \PackageError{mychemistry}{`ChemFig' is not installed! `mychemistry' can't work without it!}
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% chemexec laden, falls verfügbar, falls nicht, dann wenigstens mhchem laden
+\IfFileExists{chemexec.sty}{% mit den Default-Optionen color=black, shade=false,exercise,exersize=large
+ \ifthenelse{\equal{\@mc@exec@true}{true}}{
+ \ifthenelse{\equal{\@mc@mhchem@true}{true}}{}{
+ \PackageWarning{mychemistry}{You used the option `nomhchem' but not `nochemexec'. Please be aware that `mhchem' is loaded by `chemexec' anyway.}
+ }
+ \@ifpackageloaded{chemexec}{}{
+ \RequirePackage[color=\@mc@exec@color,shade=\@mc@exec@shade,exercise,exersize=large\@mc@exec@english]{chemexec}
+ }
+ }{}
+}{
+ \typeout{`chemexec' ist not installed.}
+ \IfFileExists{mhchem.sty}{
+ \ifthenelse{\equal{\@mc@mhchem@true}{true}}{
+ \@ifpackageloaded{mhchem}{}{
+ \RequirePackage[version=3]{mhchem}
+ }
+ }{}
+ }{
+ \typeout{`mhchem' ist not installed.}
+ }
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% NEUE BEFEHLE: %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\providecommand{\mCversion}{\@mc@version}
+\providecommand{\mCdate}[1]{
+ \ifthenelse{\equal{#1}{de}}{\@mc@date@de}{}
+ \ifthenelse{\equal{#1}{en}}{\@mc@date@en}{}
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% PFEILE ------------------------------------------------------------------------------ %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% interne Befehle, Voreinstellungen --------------------------------------------------- %
+\newcommand{\@arrow@above}{above} % oben
+\newcommand{\@arrow@currentabove}{\@arrow@above} %
+\newcommand{\@arrow@below}{below} % unten
+\newcommand{\@arrow@currentbelow}{\@arrow@below} %
+\newcommand{\@arrow@direction}{right} % Richtung
+\newcommand{\@arrow@currentdirection}{\@arrow@direction}
+\newcommand{\@arrow@currentlength}{\@arrow@length}
+\newlength{\@arrow@length@actual}
+\newcommand{\@arrow@rotate}{}
+\newcommand{\@arrow@argument@angle}{}
+\newcommand{\@arrow@argument@shift}{2pt}
+\newcommand{\@arrow@argument@anchor}{}
+\newcommand{\@arrow@argument@both}{}
+%\newcommand{\@arrow@argument@size}{}
+\newcommand{\@arrow@above@anchor}{}
+\newcommand{\@arrow@below@anchor}{}
+\newcommand{\@arrow@type}{->} % Pfeiltyp
+\newcommand{\@arrow@currenttype}{\@arrow@type} %
+\newcommand{\@arrow@start@up}{0,0.05} % Verschiebung für Glgw-Pfeil
+\newcommand{\@arrow@start@down}{0,-0.05} %
+\newcommand{\@arrow@placement}{on chain=going \@arrow@currentdirection} % wohin?
+\newcommand{\@arrow@currentplacement}{\@arrow@placement}
+\newcommand{\@arrow@cross@base@x}{} % Befehle für durchgestrichenen Pfeil
+\newcommand{\@arrow@cross@base@y}{} %
+\newcommand{\@arrow@cross@angle}{} %
+\newcommand{\@arrow@cross@length}{} %
+\newcommand{\@arrow@cross@draw}{} %
+
+% Laengenfaktor ----------------------------------------------------------------------- %
+\newcommand{\@arrow@length}{1.0} % Längenfaktor
+\newcommand{\@arrow@length@factor}{1.0} % Default-Faktor
+\newcommand{\@arrow@end}{\@arrow@length@actual,0} % Pfeilende
+\define@key{arrow}{length}[\@arrow@length]{% %
+ \renewcommand{\@arrow@currentlength}{#1}}% %
+\newlength{\@arrow@length@default} %
+\setlength{\@arrow@length@default}{5em} % Default-Laenge
+\newcommand{\arrowlength}[1]{\setlength{\@arrow@length@default}{#1}}
+
+% Beschriftungen ---------------------------------------------------------------------- %
+\newlength{\@arrow@argument@aboveshift} % Verschieben der Beschriftung
+\newlength{\@arrow@argument@belowshift} % Verschieben der Beschriftung
+\define@key{arrow}{aboveshift}[2pt]{%
+ \setlength{\@arrow@argument@aboveshift}{#1}}
+\define@key{arrow}{belowshift}[2pt]{%
+ \setlength{\@arrow@argument@belowshift}{#1}}
+\define@key{arrow}{both}[]{
+ \renewcommand{\@arrow@argument@both}{true}
+}
+
+% Anker ------------------------------------------------------------------------------- %
+\newcommand{\@arrow@name}{} % Anker
+\newcommand{\@arrow@currentname}{\@arrow@name} %
+\define@key{arrow}{name}[\@arrow@name]{% %
+ \renewcommand{\@arrow@currentname}{#1}}% %
+
+% Richtung ---------------------------------------------------------------------------- %
+\define@key{arrow}{direction}[\@arrow@direction]{%
+ \renewcommand{\@arrow@currentdirection}{#1} %
+ \ifthenelse{\equal{#1}{right}}{% nach rechts, Einstellungen:
+ \renewcommand{\@arrow@end}{\@arrow@length@actual,0}
+ \renewcommand{\@arrow@currentabove}{above}
+ \renewcommand{\@arrow@currentbelow}{below}
+ \renewcommand{\@arrow@above@anchor}{south}
+ \renewcommand{\@arrow@below@anchor}{north}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.east)+(.5\@arrow@length@actual+\@rxn@node@distance,0)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{0}
+ \renewcommand{\@arrow@rotate}{0}
+ \renewcommand{\@arrow@start@up}{0,0.03}
+ \renewcommand{\@arrow@start@down}{0,-0.03}
+ \renewcommand{\@arrow@cross@base@x}{.15em}
+ \renewcommand{\@arrow@cross@base@y}{0}
+ \renewcommand{\@arrow@cross@angle}{60}
+ \renewcommand{\@arrow@cross@length}{.5em}
+ }{
+ \ifthenelse{\equal{#1}{above right}}{% nach oben rechts, Einstellungen:
+ \renewcommand{\@arrow@end}{\@arrow@length@actual,\@arrow@length@actual}
+ \renewcommand{\@arrow@currentabove}{above left}
+ \renewcommand{\@arrow@currentbelow}{below right}
+ \renewcommand{\@arrow@above@anchor}{south}
+ \renewcommand{\@arrow@below@anchor}{north}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.north east)+(.5\@arrow@length@actual+.707\@rxn@node@distance,.5\@arrow@length@actual+.707\@rxn@node@distance)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{45}
+ \renewcommand{\@arrow@rotate}{45}
+ \renewcommand{\@arrow@start@up}{-0.02,0.02}
+ \renewcommand{\@arrow@start@down}{0.02,-0.02}
+ \renewcommand{\@arrow@cross@base@x}{.1em}
+ \renewcommand{\@arrow@cross@base@y}{.1em}
+ \renewcommand{\@arrow@cross@angle}{-15}
+ \renewcommand{\@arrow@cross@length}{.7em}
+ }{
+ \ifthenelse{\equal{#1}{above}}{% nach oben, Einstellungen:
+ \renewcommand{\@arrow@end}{0,\@arrow@length@actual}
+ \renewcommand{\@arrow@currentabove}{left}
+ \renewcommand{\@arrow@currentbelow}{right}
+ \renewcommand{\@arrow@above@anchor}{east}
+ \renewcommand{\@arrow@below@anchor}{west}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.north)+(0,.5\@arrow@length@actual+\@rxn@node@distance)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{90}
+ \renewcommand{\@arrow@rotate}{0}
+ \renewcommand{\@arrow@start@up}{-0.03,0}
+ \renewcommand{\@arrow@start@down}{0.03,0}
+ \renewcommand{\@arrow@cross@base@x}{0}
+ \renewcommand{\@arrow@cross@base@y}{.15em}
+ \renewcommand{\@arrow@cross@angle}{30}
+ \renewcommand{\@arrow@cross@length}{.5em}
+ }{
+ \ifthenelse{\equal{#1}{above left}}{% nach oben links, Einstellungen:
+ \renewcommand{\@arrow@end}{-\@arrow@length@actual,\@arrow@length@actual}
+ \renewcommand{\@arrow@currentabove}{above right}
+ \renewcommand{\@arrow@currentbelow}{below left}
+ \renewcommand{\@arrow@above@anchor}{south}
+ \renewcommand{\@arrow@below@anchor}{north}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.north west)+(-.5\@arrow@length@actual-.707\@rxn@node@distance,.5\@arrow@length@actual+.707\@rxn@node@distance)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{-45}
+ \renewcommand{\@arrow@rotate}{-45}
+ \renewcommand{\@arrow@start@up}{-0.02,-0.02}
+ \renewcommand{\@arrow@start@down}{0.02,0.02}
+ \renewcommand{\@arrow@cross@base@x}{-.1em}
+ \renewcommand{\@arrow@cross@base@y}{.1em}
+ \renewcommand{\@arrow@cross@angle}{15}
+ \renewcommand{\@arrow@cross@length}{.7em}
+ }{
+ \ifthenelse{\equal{#1}{left}}{% nach links, Einstellungen:
+ \renewcommand{\@arrow@end}{-\@arrow@length@actual,0}
+ \renewcommand{\@arrow@currentabove}{above}
+ \renewcommand{\@arrow@currentbelow}{below}
+ \renewcommand{\@arrow@above@anchor}{south}
+ \renewcommand{\@arrow@below@anchor}{north}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.west)+(-.5\@arrow@length@actual-\@rxn@node@distance,0)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{0}
+ \renewcommand{\@arrow@rotate}{0}
+ \renewcommand{\@arrow@start@up}{0,-0.03}
+ \renewcommand{\@arrow@start@down}{0,0.03}
+ \renewcommand{\@arrow@cross@base@x}{.15em}
+ \renewcommand{\@arrow@cross@base@y}{0}
+ \renewcommand{\@arrow@cross@angle}{60}
+ \renewcommand{\@arrow@cross@length}{.5em}
+ }{
+ \ifthenelse{\equal{#1}{below left}}{% nach unten links, Einstellungen:
+ \renewcommand{\@arrow@end}{-\@arrow@length@actual,-\@arrow@length@actual}
+ \renewcommand{\@arrow@currentabove}{above left}
+ \renewcommand{\@arrow@currentbelow}{below right}
+ \renewcommand{\@arrow@above@anchor}{south}
+ \renewcommand{\@arrow@below@anchor}{north}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.south west)+(-.5\@arrow@length@actual-.707\@rxn@node@distance,-.5\@arrow@length@actual-.707\@rxn@node@distance)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{45}
+ \renewcommand{\@arrow@rotate}{45}
+ \renewcommand{\@arrow@start@up}{0.02,-0.02}
+ \renewcommand{\@arrow@start@down}{-0.02,0.02}
+ \renewcommand{\@arrow@cross@base@x}{.1em}
+ \renewcommand{\@arrow@cross@base@y}{.1em}
+ \renewcommand{\@arrow@cross@angle}{-15}
+ \renewcommand{\@arrow@cross@length}{.7em}
+ }{
+ \ifthenelse{\equal{#1}{below}}{% nach unten, Einstellungen:
+ \renewcommand{\@arrow@end}{0,-\@arrow@length@actual}
+ \renewcommand{\@arrow@currentabove}{left}
+ \renewcommand{\@arrow@currentbelow}{right}
+ \renewcommand{\@arrow@above@anchor}{east}
+ \renewcommand{\@arrow@below@anchor}{west}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.south)+(0,-.5\@arrow@length@actual-\@rxn@node@distance)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{90}
+ \renewcommand{\@arrow@rotate}{0}
+ \renewcommand{\@arrow@start@up}{0.03,0}
+ \renewcommand{\@arrow@start@down}{-0.03,0}
+ \renewcommand{\@arrow@cross@base@x}{0}
+ \renewcommand{\@arrow@cross@base@y}{.15em}
+ \renewcommand{\@arrow@cross@angle}{30}
+ \renewcommand{\@arrow@cross@length}{.5em}
+ }{
+ \ifthenelse{\equal{#1}{below right}}{% nach unten rechts, Einstellungen:
+ \renewcommand{\@arrow@end}{\@arrow@length@actual,-\@arrow@length@actual}
+ \renewcommand{\@arrow@currentabove}{above right}
+ \renewcommand{\@arrow@currentbelow}{below left}
+ \renewcommand{\@arrow@above@anchor}{south}
+ \renewcommand{\@arrow@below@anchor}{north}
+ \renewcommand{\@arrow@argument@anchor}{
+ \node(@arrow@center) at ($(\tikzchainprevious.south east)+(.5\@arrow@length@actual+.707\@rxn@node@distance,-.5\@arrow@length@actual-.707\@rxn@node@distance)$) {};
+ }
+ \renewcommand{\@arrow@argument@angle}{-45}
+ \renewcommand{\@arrow@rotate}{-45}
+ \renewcommand{\@arrow@start@up}{0.02,0.02}
+ \renewcommand{\@arrow@start@down}{-0.02,-0.02}
+ \renewcommand{\@arrow@cross@base@x}{-.1em}
+ \renewcommand{\@arrow@cross@base@y}{.1em}
+ \renewcommand{\@arrow@cross@angle}{15}
+ \renewcommand{\@arrow@cross@length}{.7em}
+ }{
+ \PackageError{mychemistry}{Unknown arrow direction}% oder Fehler
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+% Pfeiltyp ---------------------------------------------------------------------------- %
+\newcommand{\@arrow@drawing}{}
+\define@key{arrow}{type}[\@arrow@type]{%
+ \renewcommand{\@arrow@currenttype}{#1}
+ \ifthenelse{\equal{#1}{->}}{
+ \renewcommand{\@arrow@drawing}{\draw[->,thick,text height=0] (0,0) -- node[pos=.5](@arrow@center){} ++(\@arrow@end);}
+ }{
+ \ifthenelse{\equal{#1}{<->}}{
+ \renewcommand{\@arrow@drawing}{\draw[<->,thick,text height=0] (0,0) -- node[pos=.5](@arrow@center){} ++(\@arrow@end);}
+ }{
+ \ifthenelse{\equal{#1}{<-}}{
+ \renewcommand{\@arrow@drawing}{\draw[<-,thick,text height=0] (0,0) -- node[pos=.5](@arrow@center){} ++(\@arrow@end);}
+ }{
+ \ifthenelse{\equal{#1}{<=>}}{
+ \renewcommand{\@arrow@drawing}{\draw[-left to,thick,text height=0] (\@arrow@start@up) -- ++(\@arrow@end);\draw[left to-,thick,text height=0] (\@arrow@start@down) -- ++(\@arrow@end);\draw[draw=none] (0,0) -- node[pos=.5](@arrow@center){} ++(\@arrow@end);}
+ }{
+ \ifthenelse{\equal{#1}{-|>}}{
+ \setlength{\@arrow@argument@aboveshift}{.75em}
+ \setlength{\@arrow@argument@belowshift}{.75em}
+ \renewcommand{\@arrow@cross@draw}{\draw[thick] ($(@arrow@center.base) + (\@arrow@cross@base@x,\@arrow@cross@base@y) + (\@arrow@cross@angle:\@arrow@cross@length)$) -- ($(@arrow@center.base) + (\@arrow@cross@base@x,\@arrow@cross@base@y) + (\@arrow@cross@angle-180:\@arrow@cross@length)$);\draw[thick] ($(@arrow@center.base) + (-\@arrow@cross@base@x,-\@arrow@cross@base@y) + (\@arrow@cross@angle:\@arrow@cross@length)$) -- ($(@arrow@center.base) + (-\@arrow@cross@base@x,-\@arrow@cross@base@y) + (\@arrow@cross@angle-180:\@arrow@cross@length)$);}
+ \renewcommand{\@arrow@drawing}{\draw[->,thick,text height=0] (0,0) -- node[pos=.5](@arrow@center){} ++(\@arrow@end);\@arrow@cross@draw}
+ }{
+ \PackageError{mychemistry}{Unknown arrow type}% oder Fehler
+ }
+ }
+ }
+ }
+ }
+}%
+% ------------------------------------------------------------------------------------- %
+% Maße der Nodes der Pfeilargumente bestimmen, größere später an Pfeil weitergeben
+\newlength{\@mc@height@A}
+\newlength{\@mc@height@B}
+\newlength{\@arrow@argument@height}
+\newlength{\@mc@width@A}
+\newlength{\@mc@width@B}
+\newlength{\@arrow@argument@width}
+\newcommand{\@mc@savenode}{%
+ \global\let\@mc@minx=\pgfpositionnodelaterminx%
+ \global\let\@mc@maxx=\pgfpositionnodelatermaxx%
+ \global\let\@mc@miny=\pgfpositionnodelaterminy%
+ \global\let\@mc@maxy=\pgfpositionnodelatermaxy%
+}%
+% der nächste Befehl benötigt pgf v2.10!
+\newcommand{\@mc@largernode}[2]{
+ \@ifundefined{pgfpositionnodelater}{
+ \PackageError{mychemistry}{The command \string\pgfpositionnodelater is undefined. Make sure, you have installed the latest version of pgf.}
+ }{}
+ {\pgfpositionnodelater{\@mc@savenode}
+ \node{#1};
+ \setlength{\@mc@width@A}{\@mc@maxx}%
+ \addtolength{\@mc@width@A}{-\@mc@minx}
+ \setlength{\@mc@height@A}{\@mc@maxy}%
+ \addtolength{\@mc@height@A}{-\@mc@miny}
+ \node{#2};
+ \setlength{\@mc@width@B}{\@mc@maxx}%
+ \addtolength{\@mc@width@B}{-\@mc@minx}
+ \setlength{\@mc@height@B}{\@mc@maxy}%
+ \addtolength{\@mc@height@B}{-\@mc@miny}
+ \pgfmathsetlength{\@arrow@argument@width}{max(\@mc@width@A,\@mc@width@B)}
+ \pgfmathsetlength{\@arrow@argument@height}{max(\@mc@height@A,\@mc@height@B)}
+ \global\@arrow@argument@width=\@arrow@argument@width
+ \global\@arrow@argument@height=\@arrow@argument@height
+ }
+}
+
+% Pfeil zeichnen ---------------------------------------------------------------------- %
+\newcommand{\@arrow}[3][]{
+ \renewcommand{\@arrow@length@factor}{\@arrow@currentlength}
+ \setlength{\@arrow@length@actual}{\@arrow@currentlength\@arrow@length@default}
+ \ifthenelse{\equal{\@arrow@argument@both}{true}}{
+ \@mc@largernode{#2}{#3}
+ }{
+ \setlength{\@arrow@argument@width}{0pt}
+ \setlength{\@arrow@argument@height}{0pt}
+ }
+ \draw node[on chain=going \@arrow@currentdirection](\@arrow@currentname) {\tikz{
+ \@arrow@drawing
+ }
+ };
+ \@arrow@argument@anchor
+ \draw node[anchor=\@arrow@above@anchor,rotate=\@arrow@rotate,minimum width=\@arrow@argument@width, minimum height=\@arrow@argument@height]
+ at ($(@arrow@center.base)+(90+\@arrow@argument@angle:\@arrow@argument@aboveshift)$) {#2};
+ \draw node[anchor=\@arrow@below@anchor,rotate=\@arrow@rotate,minimum width=\@arrow@argument@width, minimum height=\@arrow@argument@height]
+ at ($(@arrow@center.base)+(-90+\@arrow@argument@angle:\@arrow@argument@belowshift)$) {#3};
+ \setlength{\@arrow@argument@aboveshift}{2pt}
+ \setlength{\@arrow@argument@belowshift}{2pt}
+}
+
+% Voreinstellungen:
+\presetkeys%
+ {arrow}
+ {direction=\@arrow@direction,length=\@arrow@length,type=\@arrow@type,aboveshift=\@arrow@argument@shift,belowshift=\@arrow@argument@shift}
+ {}
+
+% Eigentlicher Befehl:
+\providecommand{\arrow}[3][]{
+ \setkeys{arrow}{#1}
+ \@arrow{#2}{#3}
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% MERGE ------------------------------------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newcommand{\@merge@direction}{below}
+\newcommand{\@merge@to}{}
+\newcommand{\@merge@from@one}{}
+\newcommand{\@merge@from@two}{}
+\newcommand{\@merge}[3]{
+ \renewcommand{\@merge@to}{#1}
+ \renewcommand{\@merge@from@one}{#2}
+ \renewcommand{\@merge@from@two}{#3}
+}
+% Basisbefehle ------------------------------------------------------------------------ %
+\newcommand{\@merge@right}{
+ \draw[stealth-,thick] ($(\@merge@to.west)+(-1em,0)$) -- ($(\@merge@to.west)+(-4em,0)$) node(crossing) {};
+ \draw[thick] ($(\@merge@from@one.east)+(1em,0)$) -| (crossing.base);
+ \draw[thick] ($(\@merge@from@two.east)+(1em,0)$) -| (crossing.base);
+}
+\newcommand{\@merge@above}{
+ \draw[stealth-,thick] ($(\@merge@to.south)+(0,-1em)$) -- ($(\@merge@to.south)+(0,-4em)$) node(crossing) {};
+ \draw[thick] (crossing.base) -| ($(\@merge@from@one.north)+(0,1em)$);
+ \draw[thick] (crossing.base) -| ($(\@merge@from@two.north)+(0,1em)$);
+}
+\newcommand{\@merge@left}{
+ \draw[stealth-,thick] ($(\@merge@to.east)+(1em,0)$) -- ($(\@merge@to.east)+(4em,0)$) node(crossing) {};
+ \draw[thick] ($(\@merge@from@one.west)+(-1em,0)$) -| (crossing.base);
+ \draw[thick] ($(\@merge@from@two.west)+(-1em,0)$) -| (crossing.base);;
+}
+\newcommand{\@merge@below}[3]{
+ \draw[stealth-,thick] ($(\@merge@to.north)+(0,1em)$) -- ($(\@merge@to.north)+(0,4em)$) node(crossing) {};
+ \draw[thick] (crossing.base) -| ($(\@merge@from@one.south)+(0,-1em)$);
+ \draw[thick] (crossing.base) -| ($(\@merge@from@two.south)+(0,-1em)$);
+}
+% key zur Auswahl --------------------------------------------------------------------- %
+\define@choicekey{merge}{direction}[\val\nr]{right,above,left,below}[below]{
+ \ifcase\nr\relax
+ \@merge@right
+ \or
+ \@merge@above
+ \or
+ \@merge@left
+ \or
+ \@merge@below
+ \fi
+}
+% Voreinstellung ---------------------------------------------------------------------- %
+\presetkeys%
+ {merge}
+ {direction=below}
+ {}
+% eigentlicher Befehl ----------------------------------------------------------------- %
+\newcommand{\merge}[4][]{
+ \@merge{#2}{#3}{#4}
+ \setkeys{merge}{#1}
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% REAKTIONSSCHEMA --------------------------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newlength{\@rxn@node@distance}
+\setlength{\@rxn@node@distance}{1em}
+\providecommand{\setrcndist}[1]{
+ \ifthenelse{\equal{#1}{}}{
+ \setlength{\@rxn@node@distance}{1em}
+ }{
+ \setlength{\@rxn@node@distance}{#1}
+ }
+}
+% ------------------------------------------------------------------------------------- %
+% Schema ------------------------------------------------------------------------------ %
+% ------------------------------------------------------------------------------------- %
+\newcommand{\@mc@rs@scale}{1.0} % Default-Skalierung
+\newcommand{\@mc@rs@currentscale}{\@mc@rs@scale} %
+\providecommand{\setschemename}[1]{\renewcommand{\@mc@rs@name}{#1}}
+\newcommand{\@mc@rs@caption}{} % Beschriftung
+\newcommand{\@mc@rs@label}{} % Label
+\newcommand{\@mc@rs@currentlabel}{\@mc@rs@label} %
+\define@key{rxnscheme}{label}{% %
+ \ifthenelse{\equal{#1}{}}{}{ %
+ \renewcommand{\@mc@rs@currentlabel}{#1} %
+ } %
+} %
+\define@key{rxnscheme}{scale}[1.0]{ % Skalierung
+ \renewcommand{\@mc@rs@currentscale}{#1} %
+} %
+\define@key{rxnscheme}{name}{ % Name
+ \renewcommand{\@mc@rs@name}{#1} %
+} %
+\define@key{rxnscheme}{placement}{ % Float-Platzierung
+ \renewcommand{\@mc@rs@currentplacement}{#1} %
+} %
+\newcommand{\@mc@rs@align}{center} %
+\newcommand{\@mc@rs@right}{right} %
+\newcommand{\@mc@rs@center}{center} %
+\newcommand{\@mc@rs@left}{left} %
+\providecommand{\setschemealign}[1]{ %
+ \ifthenelse{\equal{#1}{}}{ %
+ \renewcommand{\@mc@rs@align}{center} %
+ }{ %
+ \renewcommand{\@mc@rs@align}{#1} %
+ } %
+} %
+\define@key{rxnscheme}{align}{ % Alignment
+ \renewcommand{\@mc@rs@align}{#1}
+}
+% Voreinstellungen:
+%\presetkeys%
+% {rxnscheme}
+% {scale=\@mc@rs@scale,align=\@mc@rs@align,label=\@mc@rs@label}
+% {}
+% Gleitumgebung
+\floatstyle{ruled}
+\newfloat{rxnfloat}{\@mc@rs@currentplacement}{rxnscheme}
+\floatname{rxnfloat}{\@mc@rs@name} % Name ändern
+% eigentliche Umgebung:
+\newenvironment{rxnscheme}[2][]{%
+ \setkeys{rxnscheme}{#1}
+ \renewcommand\@mc@rs@caption{#2}
+ \begin{rxnfloat}
+ %\centering
+ \ifx\@mc@rs@align\@mc@rs@center \centering \fi
+ \ifx\@mc@rs@align\@mc@rs@left \raggedright \fi
+ \ifx\@mc@rs@align\@mc@rs@right \raggedleft \fi
+ \@mc@atomsize\@mc@bondlength\@mc@bondshape
+ \begin{tikzpicture}[every picture/.style={scale=\@mc@rs@currentscale},start chain,node distance=\@rxn@node@distance,inner sep=0pt]
+}{%
+ \end{tikzpicture}%
+ \caption{\@mc@rs@caption}
+ \ifthenelse{\equal{\@mc@rs@currentlabel}{}}{}{\label{\@mc@rs@currentlabel}}
+ \end{rxnfloat}
+}
+
+% ------------------------------------------------------------------------------------- %
+% einfache Reaktion ------------------------------------------------------------------- %
+% ------------------------------------------------------------------------------------- %
+\newcommand{\@mc@reaction@scale}{1.0}
+\newcommand{\@mc@reaction@align}{center}
+\providecommand{\setrxnalign}[1]{
+ \ifthenelse{\equal{#1}{}}{
+ \renewcommand{\@mc@reaction@align}{center}
+ }{
+ \renewcommand{\@mc@reaction@align}{#1}
+ }
+}
+\newcommand{\@mc@reaction@right}{right}
+\newcommand{\@mc@reaction@center}{center}
+\newcommand{\@mc@reaction@left}{left}
+\define@key{rxn}{scale}{
+ \renewcommand{\@mc@reaction@scale}{#1}}
+\define@key{rxn}{align}{
+ \renewcommand{\@mc@reaction@align}{#1}}
+% Voreinstellungen:
+%\presetkeys%
+% {rxn}
+% {scale=\@mc@reaction@scale,align=\@mc@reaction@align}
+% {}
+\newenvironment{rxn}[1][]{%
+ \setkeys{rxn}{#1}
+ \ifx\@mc@reaction@align\@mc@reaction@center
+ \begin{center}
+ \fi
+ \ifx\@mc@reaction@align\@mc@reaction@left
+ \begin{flushleft}
+ \fi
+ \ifx\@mc@reaction@align\@mc@reaction@right
+ \begin{flushright}
+ \fi
+ \@mc@bondlength\@mc@bondshape\@mc@atomsize
+ \begin{tikzpicture}[every picture/.style={scale=\@mc@reaction@scale},start chain,node distance=\@rxn@node@distance,inner sep=0pt]
+}{%
+ \end{tikzpicture}%
+ \ifx\@mc@reaction@align\@mc@reaction@center
+ \end{center}
+ \fi
+ \ifx\@mc@reaction@align\@mc@reaction@left
+ \end{flushleft}
+ \fi
+ \ifx\@mc@reaction@align\@mc@reaction@right
+ \end{flushright}
+ \fi
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% REAKTANDEN -------------------------------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Standardreaktand -------------------------------------------------------------------- %
+\newcommand{\@mc@reactand}[3][]{\draw node[on chain=going #1](#3) {#2};}
+\providecommand{\reactand}[3][right]{\@mc@reactand[#1]{#2}{#3}}
+
+% Mesomerie --------------------------------------------------------------------------- %
+\newcommand{\@mc@mesomeric}[3][]{\draw node[inner sep=1pt,on chain=going #1,left delimiter={[},right delimiter={]}](#3) {#2};}
+\providecommand{\mesomeric}[3][right]{\@mc@mesomeric[#1]{\begin{tikzpicture}[start branch]#2\end{tikzpicture}}{#3}}
+\providecommand{\marrow}[1][right]{\arrow[type=<->,length=.5,direction=#1]{}{}}
+\providecommand{\dummy}[1][]{\draw node[on chain,xshift=-\@rxn@node@distance](#1) {};}
+
+% Uebergangszustand ------------------------------------------------------------------- %
+\newcommand\@mc@transition@name{}
+\newcommand{\@mc@transition}[3][]{
+ \ifthenelse{\equal{#3}{}}{\renewcommand\@mc@transition@name{a}}{\renewcommand\@mc@transition@name{#3}}
+ \draw node[inner sep=1pt,on chain=going #1,left delimiter={[},right delimiter={]}](\@mc@transition@name) {#2} node at ($(\@mc@transition@name.north east)+(.25,0)$) {$\ddagger$};
+}
+\providecommand{\transition}[3][right]{\@mc@transition[#1]{\begin{tikzpicture}[start branch]#2\end{tikzpicture}}{#3}}
+
+% Abzweigung -------------------------------------------------------------------------- %
+\newcommand{\@mc@branch}[3][]{\node[#1] (#3) {#2};}
+\providecommand{\branch}[3][on chain=going right]{\@mc@branch[#1]{\begin{tikzpicture}[start branch]#2\end{tikzpicture}}{#3}}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Sonstiges --------------------------------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Elektronenverschiebungspfeile ------------------------------------------------------- %
+\providecommand{\elmove}[5][->,red,shorten <=3pt,shorten >=1pt]{\chemmove{\draw[#1](#2).. controls +(#3) and +(#5)..(#4);}}
+% Bindungslänge ----------------------------------------------------------------------- %
+\newcommand{\@mc@bondlength}{\setatomsep{1.8em}}
+\providecommand{\bondlength}[1]{
+ \ifthenelse{\equal{#1}{}}{
+ \renewcommand{\@mc@bondlength}{\setatomsep{1.8em}}
+ }{
+ \renewcommand{\@mc@bondlength}{\setatomsep{#1}}
+ }
+}
+% Keilbindungen ----------------------------------------------------------------------- %
+\newcommand{\@mc@bondshape@one}{3pt}
+\newcommand{\@mc@bondshape@two}{.5pt}
+\newcommand{\@mc@bondshape@three}{1pt}
+\providecommand{\bondshape}[3]{
+ \ifthenelse{\equal{#1}{}}{
+ \renewcommand{\@mc@bondshape@one}{3pt}
+ }{
+ \renewcommand{\@mc@bondshape@one}{#1}
+ }
+ \ifthenelse{\equal{#2}{}}{
+ \renewcommand{\@mc@bondshape@two}{.5pt}
+ }{
+ \renewcommand{\@mc@bondshape@two}{#2}
+ }
+ \ifthenelse{\equal{#3}{}}{
+ \renewcommand{\@mc@bondshape@three}{1pt}
+ }{
+ \renewcommand{\@mc@bondshape@three}{#3}
+ }
+}
+\newcommand{\@mc@bondshape}{\setcrambond{\@mc@bondshape@one}{\@mc@bondshape@two}{\@mc@bondshape@three}}
+% Atomgröße --------------------------------------------------------------------------- %
+\newcommand{\@mc@atomsize}{\small}
+\providecommand{\atomsize}[1]{
+ \ifthenelse{\equal{#1}{}}{
+ \renewcommand{\@mc@atomsize}{\small}
+ }{
+ \renewcommand{\@mc@atomsize}{#1}
+ }
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% NODES SICHTBAR/UNSICHTBAR MACHEN ---------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newcommand\makevisible{
+ \renewcommand{\@mc@branch}[3][]{\node[draw=purple,dotted,##1] (##3) {##2};}
+ \renewcommand{\@mc@reactand}[3][]{\draw node[draw=red!60,solid,on chain=going ##1](##3) {##2};}
+ \renewcommand{\@mc@mesomeric}[3][]{\draw node[draw=red!60,solid,on chain=going ##1,left delimiter={[},right delimiter={]}](##3) {##2};}
+ \renewcommand{\@arrow}[3][]{
+ \renewcommand{\@arrow@length@factor}{\@arrow@currentlength}
+ \setlength{\@arrow@length@actual}{\@arrow@currentlength\@arrow@length@default}
+ \ifthenelse{\equal{\@arrow@argument@both}{true}}{
+ \@mc@largernode{##2}{##3}
+ }{
+ \setlength{\@arrow@argument@width}{0pt}
+ \setlength{\@arrow@argument@height}{0pt}
+ }
+ \draw node[solid,on chain=going \@arrow@currentdirection](\@arrow@currentname) {\tikz{
+ \@arrow@drawing
+ }
+ };
+ \@arrow@argument@anchor
+ \draw node[draw=green!60,solid,anchor=\@arrow@above@anchor,rotate=\@arrow@rotate,minimum width=\@arrow@argument@width, minimum height=\@arrow@argument@height]
+ at ($(@arrow@center.base)+(90+\@arrow@argument@angle:\@arrow@argument@aboveshift)$) {##2};
+ \draw node[draw=blue!60,solid,anchor=\@arrow@below@anchor,rotate=\@arrow@rotate,minimum width=\@arrow@argument@width, minimum height=\@arrow@argument@height]
+ at ($(@arrow@center.base)+(-90+\@arrow@argument@angle:\@arrow@argument@belowshift)$) {##3};
+ \setlength{\@arrow@argument@aboveshift}{2pt}
+ \setlength{\@arrow@argument@belowshift}{2pt}
+ }
+}
+
+\newcommand\makeinvisible{
+ \renewcommand{\@mc@reactand}[3][]{\draw node[on chain=going ##1](##3) {##2};}
+ \renewcommand{\@mc@mesomeric}[3][]{\draw node[on chain=going ##1,left delimiter={[},right delimiter={]}](##3) {##2};}
+ \renewcommand{\@mc@branch}[3][]{\node[##1] (##3) {##2};}
+ \renewcommand{\@arrow}[3][]{
+ \renewcommand{\@arrow@length@factor}{\@arrow@currentlength}
+ \setlength{\@arrow@length@actual}{\@arrow@currentlength\@arrow@length@default}
+ \ifthenelse{\equal{\@arrow@argument@both}{true}}{
+ \@mc@largernode{##2}{##3}
+ }{
+ \setlength{\@arrow@argument@width}{0pt}
+ \setlength{\@arrow@argument@height}{0pt}
+ }
+ \draw node[on chain=going \@arrow@currentdirection](\@arrow@currentname) {\tikz{
+ \@arrow@drawing
+ }
+ };
+ \@arrow@argument@anchor
+ \draw node[anchor=\@arrow@above@anchor,rotate=\@arrow@rotate,minimum width=\@arrow@argument@width, minimum height=\@arrow@argument@height]
+ at ($(@arrow@center.base)+(90+\@arrow@argument@angle:\@arrow@argument@aboveshift)$) {##2};
+ \draw node[anchor=\@arrow@below@anchor,rotate=\@arrow@rotate,minimum width=\@arrow@argument@width, minimum height=\@arrow@argument@height]
+ at ($(@arrow@center.base)+(-90+\@arrow@argument@angle:\@arrow@argument@belowshift)$) {##3};
+ \setlength{\@arrow@argument@aboveshift}{2pt}
+ \setlength{\@arrow@argument@belowshift}{2pt}
+ }
+}
+% ------------------------------------------------------------------------------------- %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \ No newline at end of file