Sebastian Walz 9f7b02e1cd
Tohu vaBohu
2023-04-03 14:38:02 +02:00

2675 lines
86 KiB
TeX

\csname CFloadonce\endcsname
\let\CFloadonce\endinput
%
\ifdefined\CFfromsty\else
\immediate\write -1 {%
Package: \CFname\space\CFdate\space\space v\CFver\space\space
Draw molecule with an easy syntax (CT)}%
\fi
%
\begingroup
\def\X#1{\catcode\number`#1=\number\catcode`#1\relax}
\xdef\CFrestorecatcode{\X\[\X\]\X\:\X\(\X\)\X\,\X\-\X\=\X\~\X\!\X\?\X\<\X\>\X\;\X\*\X\|\X\@\X\ \X\_}%
\endgroup
\catcode`\[12 \catcode`\]12 \catcode`\:12 \catcode`\(12
\catcode`\)12 \catcode`\,12 \catcode`\-12 \catcode`\=12
\catcode`\~12 \catcode`\!12 \catcode`\?12 \catcode`\<12
\catcode`\>12 \catcode`\;12 \catcode`\*12 \catcode`\|12
\catcode`\@12 \catcode`\#6 \catcode`\ 10 \catcode`\_11
%
\def\CF_error#1{\errmessage{Package \CFname\space Error: #1.}}
\def\CF_warning#1{\immediate\write-1{Package \CFname\space Warning: #1^^J}}
\def\CF_checkprimitive#1#2{%
\begingroup
\edef\__tempa{\meaning#1}\edef\__tempb{\string#1}\expandafter
\endgroup
\ifx\__tempa\__tempb\else
\CF_error{#2}%
\def\CF_temp{\CFrestorecatcode\endinput}%
\expandafter\CF_temp
\fi
}
\CF_checkprimitive\eTeXversion{You are not using an eTeX engine, \CFname\space cannot work.}
\CF_checkprimitive\expanded{the \string\expanded\space primitive is not provided by your TeX engine, \CFname\space cannot work.}
%
\input simplekv.tex
%
\unless\ifdefined\tikzpicture
\begingroup\def\CFtemp{\endgroup\input tikz.tex\relax}%
\expandafter\CFtemp
\fi
\usetikzlibrary{arrows.meta}
%
\newcount\CF_cntatomgroup
\newcount\CF_cntgroup
\newcount\CF_cntatom
\newcount\CF_cntcycle
\newcount\CF_cntcyclebonds
\newcount\CF_cntcompound
\newif\ifCF_incycle
\newif\ifCF_cyclearc
\newif\ifCF_definesubmol
\newif\ifCF_adjustnamedp
\newif\ifCF_macrofixedbondlength
\newif\ifCF_compound_is_chemfig
\newdimen\CF_dim
\newdimen\CF_arrowsize
\newdimen\CF_zero \CF_zero=0pt
\newbox\CF_box
\newbox\CF_boxstuff
\newbox\CF_testbox
\newbox\CF_chargebox
\newtoks\CF_substtoks
%
\let\CF_begintikzpicture\tikzpicture
\let\CF_endtikzpicture \endtikzpicture
\def\CF_quark{\CF_quark}
\def\CF_execfirst#1#2{#1}
\def\CF_execsecond#1#2{#2}
\def\CF_id#1{#1}
\def\CF_gobarg#1{}
\def\CF_gobtwoargs#1#2{}
\def\CF_firsttonil#1#2\_nil{#1}
\def\CF_sanitizelastitem#1,\empty#2\_nil{#1}
\def\CF_gobtikzinstruction#1;{}
\def\CF_makeother#1{\catcode`#1=12\relax}
\def\CF_lettoken#1#2{\let#1= #2}\CF_lettoken\CF_sptoken{ }
\def\CF_ifx#1#2{\ifx#1#2\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi}
\def\CF_ifempty#1{\ifx\empty#1\empty\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi}
\def\CF_ifnum#1{\ifnum#1\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi}
\def\CF_ifinsidetikz{\ifdefined\pgfpictureid\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi}
\def\CF_ifzerodim#1{%
\setbox\CF_testbox\hbox{\pgfinterruptpicture\printatom{#1}\endpgfinterruptpicture}%
\CF_ifnum{1\ifdim\wd\CF_testbox=\CF_zero0\fi\ifdim\ht\CF_testbox=\CF_zero0\fi\ifdim\dp\CF_testbox=\CF_zero0\fi=1000 }
}
\def\CF_doifempty#1{\ifx\empty#1\empty\expandafter\CF_id\else\expandafter\CF_gobarg\fi}
\def\CF_doifnotempty#1{\ifx\empty#1\empty\expandafter\CF_gobarg\else\expandafter\CF_id\fi}
\def\CF_gobtonil#1\_nil{}
\def\CF_striplastsp#1{%
\long\def\CF_stripsp##1##2{\expanded{\CF_stripsp_i\_marksp##1\__nil\_marksp#1\_marksp\_nil{##2}}}%
\long\def\CF_stripsp_i##1\_marksp#1##2\_marksp##3\_nil{\CF_stripsp_ii##3##1##2\__nil#1\__nil\_nil}%
\long\def\CF_stripsp_ii##1#1\__nil##2\_nil{\CF_stripsp_iii##1##2\_nil}%
\long\def\CF_stripsp_iii##1##2\__nil##3\_nil##4{\unexpanded{##4{##2}}}%
\long\def\CF_striplastsp##1##2{\expanded{\CF_striplastsp_i\_marksp##1\__nil#1\__nil\_nil{##2}}}%
\long\def\CF_striplastsp_i##1#1\__nil##2\_nil{\CF_stripsp_iii##1\__nil\_nil}%
}\CF_striplastsp{ }
\edef\CFhash{\string#}
\begingroup
\catcode`\_8
\expandafter\gdef\csname CF\string_underscore\endcsname{_}
\endgroup
\def\CF_threeea{\expandafter\expandafter\expandafter}
\def\CF_exptwomacroargs#1#2#3{\CF_expsecond{\CF_expsecond#1{#2}}{#3}}
\def\CF_expthreemacroargs#1#2#3#4{\CF_expsecond{\CF_exptwomacroargs#1{#2}{#3}}{#4}}
\def\CF_swaparg#1#2{#2{#1}}
\def\CF_expsecond#1#2{\expandafter\CF_swaparg\expandafter{#2}{#1}}%
\def\CF_eexpsecond#1#2{\expandafter\expandafter\expandafter\CF_swaparg\expandafter\expandafter\expandafter{#2}{#1}}%
\def\CF_swapunbrace#1#2{#2#1}
\def\CF_expafter#1#2{\expandafter\CF_swapunbrace\expandafter{#2}{#1}}%
\def\CF_eexpafter#1#2{\expandafter\expandafter\expandafter\CF_swapunbrace\expandafter\expandafter\expandafter{#2}{#1}}%
\def\CF_addtomacro#1#2{\CF_expsecond{\def#1}{#1#2}}
\def\CF_eaddtomacro#1#2{\CF_expsecond{\CF_addtomacro#1}{#2}}
\def\CF_preaddtomacro#1#2{\CF_expsecond{\CF_preaddtomacroa#1{#2}}#1}
\def\CF_preaddtomacroa#1#2#3{\def#1{#2#3}}
\def\CF_addtotoks#1#2{#1\expandafter{\the#1#2}}
\def\CF_eaddtotoks#1#2{\expandafter\CF_addtotoks\expandafter#1\expandafter{#2}}
\def\CF_assigntonil#1#2\_nil{\def#1{#2}}
\def\CF_edefaddtomacro#1#2{\CF_expsecond{\CF_addtomacro#1}{\expanded{#2}}}
\def\CF_ifnextchar#1#2#3{%
\let\CF_ifnextchartok=#1%
\def\CF_ifnextcharcodetrue{#2}%
\def\CF_ifnextcharcodefalse{#3}%
\futurelet\CF_temptok\CF_ifnextchara
}
\def\CF_ifnextchara{%
\CF_ifx\CF_temptok\CF_sptoken
{\CF_ifnextcharb
}
{\CF_ifx\CF_temptok\CF_ifnextchartok
\CF_ifnextcharcodetrue
\CF_ifnextcharcodefalse
}%
}
\expandafter\def\expandafter\CF_ifnextcharb\space{\futurelet\CF_temptok\CF_ifnextchara}
\def\CF_ifstar#1{\CF_ifnextchar*{\CF_execfirst{#1}}}
\def\CF_testopt#1#2{\CF_ifnextchar[{#1}{#1[{#2}]}}
\def\CF_ifinteger#1{%
\begingroup
\afterassignment\CF_afterinteger
\CF_cntcyclebonds0#1\relax
}
\def\CF_afterinteger#1\relax{%
\endgroup
\CF_ifempty{#1}%
}
\def\CF_iffirsttokmatch#1#2{%
\futurelet\CF_toksa\CF_gobtonil#1\relax\_nil
\futurelet\CF_toksb\CF_gobtonil#2\relax\_nil
\CF_ifx\CF_toksa\CF_toksb
}
\def\CF_iffirsttokin#1{%
\futurelet\CF_toksa\CF_gobtonil#1\relax\_nil
\CF_iffirsttokina
}
\def\CF_iffirsttokina#1{%
\CF_ifempty{#1}
{\CF_execsecond
}
{\futurelet\CF_toksb\CF_gobtonil#1\relax\_nil
\CF_ifx\CF_toksa\CF_toksb
{\CF_execfirst}
{\CF_expsecond\CF_iffirsttokina{\CF_gobarg#1}}%
}%
}
\def\CF_ifinstr#1#2{%
\def\CF_ifinstra##1#2##2\_nil{%
\ifx\empty##2\empty
\expandafter\CF_execsecond
\else
\expandafter\CF_execfirst
\fi}%
\CF_ifinstra#1\__nil#2\_nil
}
\def\CF_afterspace#1 #2\_nil{#2}
%
\def\CF_ifstartwith#1#2{%
\CF_ifempty{#1}%
{\CF_execsecond
}
{\def\CF_startwithcode{#1}%
\def\CF_startwithpattern{#2}%
\CF_ifstartwitha
}%
}
\def\CF_ifstartwitha{%
\CF_grabfirstarg\CF_startwithcode\CF_firstargcode
\CF_grabfirstarg\CF_startwithpattern\CF_firstargpattern
\CF_ifx\CF_firstargcode\CF_firstargpattern
{\CF_expsecond\CF_ifempty\CF_startwithpattern
{\CF_execfirst
}
{\CF_expsecond\CF_ifempty\CF_startwithcode
\CF_execsecond
\CF_ifstartwitha
}%
}
{\CF_execsecond
}%
}
\def\CF_grabfirstarg#1#2{%
\CF_ifx#1\empty
{\let#2\empty
}
{\def\CF_grabmacro{#2}%
\CF_expsecond\CF_ifbracefirst#1%
{\expandafter\CF_grabbracearg#1\_nil#1}
{\CF_expafter{\futurelet\CF_nexttok\CF_grabfirstarga}#1\_nil#1}%
}%
}
\def\CF_grabfirstarga{%
\CF_ifx\CF_nexttok\CF_sptoken
\CF_grabspacearg
\CF_grabnormalarg
}
\def\CF_grabbracearg#1{%
\expandafter\def\CF_grabmacro{{#1}}%
\CF_grabargassigntonil\relax
}
\expandafter\def\expandafter\CF_grabspacearg\space{%
\expandafter\def\CF_grabmacro{ }%
\CF_grabargassigntonil\relax
}
\def\CF_grabnormalarg#1{%
\expandafter\def\CF_grabmacro{#1}%
\CF_grabargassigntonil\relax
}
\def\CF_grabargassigntonil#1\_nil#2{\CF_expsecond{\def#2}{\CF_gobarg#1}}
\def\CF_ifbracefirst#1{\CF_ifnum{\catcode\CF_threeea`\expandafter\CF_firsttonil\detokenize{#1.}\_nil=1 }}
\def\CF_substonly#1#2{%
\def\CF_atendsubstitute{\edef#2{\the\CF_substtoks}}%
\let\CF_substnogroups\CF_substnogrouponly
\CF_ifnum{#1>0 }
{\let\CF_testifx\empty
\foreach\CF_x in {1,...,#1}
{\xdef\CF_testifx{\unexpanded\expandafter{\CF_testifx}\unexpanded\expandafter{\expandafter\ifx\CF_x\CF_nexttok1\fi}}}%
\let\CF_testif\empty
\foreach\CF_x in {1,...,#1}
{\xdef\CF_testif{\unexpanded\expandafter{\CF_testif}\unexpanded\expandafter{\expandafter\if\CF_x\CF_nexttok1\fi}}}%
\CF_expsecond\CF_substi#2%
}
{\CF_substall#2%
}%
}
\def\CF_substnogrouponly{%
\CF_exptwomacroargs\CF_ifstartwith\CF_substcode\CF_substsubst
{\CF_grabfirstarg\CF_substcode\CF_temp
\CF_expafter{\futurelet\CF_nexttok\CF_gobtonil}\CF_substcode\relax\_nil
\CF_ifnum{0\CF_testifx=1 }%
{\edef\CF_nexttok{\CF_threeea\CF_firsttonil\expandafter\string\CF_substcode\_nil}%
\CF_ifnum{0\CF_testif=1 }
{\CF_eaddtotoks\CF_substtoks\CF_temp
\CF_grabfirstarg\CF_substcode\CF_temp
\CF_eaddtotoks\CF_substtoks\CF_temp
}
{\CF_eaddtotoks\CF_substtoks\CF_substpattern
}%
}
{\CF_eaddtotoks\CF_substtoks\CF_substpattern
}%
\CF_substgroups
}
{\CF_expsecond\CF_ifempty\CF_substcode
{\CF_atendsubstitute
}
{\CF_grabfirstarg\CF_substcode\CF_substauxarg
\CF_eaddtotoks\CF_substtoks\CF_substauxarg
\CF_substgroups
}%
}%
}
\def\CF_substall#1{%
\def\CF_atendsubstitute{\edef#1{\the\CF_substtoks}}%
\let\CF_substnogroups\CF_substnogroupall
\CF_expsecond\CF_substi#1%
}
\def\CF_substnogroupall{%
\CF_exptwomacroargs\CF_ifstartwith\CF_substcode\CF_substsubst
{\CF_eaddtotoks\CF_substtoks\CF_substpattern
\CF_grabfirstarg\CF_substcode\CF_temp
\CF_substgroups
}
{\CF_expsecond\CF_ifempty\CF_substcode
{\CF_atendsubstitute
}
{\CF_grabfirstarg\CF_substcode\CF_substauxarg
\CF_eaddtotoks\CF_substtoks\CF_substauxarg
\CF_substgroups
}%
}%
}
\def\CF_substi#1#2#3{%
\def\CF_substcode{#1}\def\CF_substsubst{#2}\def\CF_substpattern{#3}%
\CF_substtoks={}%
\CF_substgroups
}
\def\CF_substgroups{%
\CF_expsecond\CF_ifbracefirst\CF_substcode
{\CF_grabfirstarg\CF_substcode\CF_substauxarg
\begingroup
\def\CF_atendsubstitute{%
\expandafter\endgroup\expandafter\CF_addtotoks\expandafter\CF_substtoks\expandafter{\expandafter{\the\CF_substtoks}}%
\CF_substgroups
}%
\CF_substtoks{}%
\expandafter\def\expandafter\CF_substcode\CF_substauxarg
\CF_substgroups
}%
{\CF_substnogroups
}%
}
%
\def\CF_defifempty#1#2#3{\CF_ifempty{#2}{\def#1{#3}}{\def#1{#2}}}
\defKV[chemfig]{%
atom style = \def\CF_atomstyle {#1},
chemfig style = \def\CF_chemfigstyle {#1},
cram width = \CF_defifempty\CF_crambasewidth {#1}{1.5ex},
cram dash width = \CF_defifempty\CF_cramdashlength {#1}{1pt},
cram dash sep = \CF_defifempty\CF_cramdashsep {#1}{2pt},
atom sep = \CF_defifempty\CF_atomsep {#1}{3em},
bond offset = \CF_defifempty\CF_bondoffset {#1}{2pt},
double bond sep = \CF_defifempty\CF_doublesep {#1}{2pt},
angle increment = \CF_defifempty\CF_angleincrement {#1}{45},
node style = \def\CF_nodestyle {#1},
bond style = \def\CF_bondstyle {#1},
cycle radius coeff = \CF_defifempty\CF_cycleradiuscoeff {#1}{0.75},
stack sep = \CF_defifempty\CF_stacksep {#1}{1.5pt},
compound style = \def\CF_defaultcompoundstyle {#1},
compound sep = \CF_defifempty\CF_compoundsep {#1}{5em},
arrow offset = \CF_defifempty\CF_arrowoffset {#1}{1em},
arrow angle = \CF_defifempty\CF_arrowangle {#1}{0},
arrow coeff = \CF_defifempty\CF_arrowlength {#1}{1},
arrow style = \def\CF_defaultarrowstyle {#1},
arrow double sep = \CF_defifempty\CF_arrowdoublesep {#1}{2pt},
arrow double coeff = \CF_defifempty\CF_arrowdoubleposstart{#1}{0.6},
arrow label sep = \CF_defifempty\CF_arrowlabelsep {#1}{3pt},
arrow head = \CF_defifempty\CF_arrowhead {#1}{-CF},
+ sep left = \CF_defifempty\CF_signspaceante {#1}{0.5em},
+ sep right = \CF_defifempty\CF_signspacepost {#1}{0.5em},
+ vshift = \CF_defifempty\CF_signvshift {#1}{0pt}
}
\def\setchemfig{\setKV[chemfig]}
\def\resetchemfig{\restoreKV[chemfig]}
\setKVdefault[chemfig]{%
atom style = {},%
chemfig style = {},%
bond join = false,
fixed length = false,
cram rectangle = false,
cram width = 1.5ex,
cram dash width = 1pt,
cram dash sep = 2pt,
atom sep = 3em,
bond offset = 2pt,
double bond sep = 2pt,
angle increment = 45,
node style = {},
bond style = {},
cycle radius coeff = 0.75,
stack sep = 1.5pt,
autoreset cntcycle = true,
show cntcycle = false,
debug =false,
scheme debug = false,
compound style = {},
compound sep = 5em,
arrow offset = 1em,
arrow angle = 0,
arrow coeff = 1,
arrow style = {},
arrow double sep = 2pt,
arrow double coeff = 0.6,
arrow double harpoon= true,
arrow label sep = 3pt,
arrow head = -CF,
+ sep left = 0.5em,
+ sep right = 0.5em,
+ vshift = 0pt,
}%
%
%
%
\def\CF_sanitizecatcode{%
\CF_makeother\[\CF_makeother\]\CF_makeother\:\CF_makeother\(\CF_makeother\)%
\CF_makeother\,\CF_makeother\-\CF_makeother\=\CF_makeother\~\CF_makeother\!%
\CF_makeother\?\CF_makeother\<\CF_makeother\>\CF_makeother\;\CF_makeother\*%
\CF_makeother\|\CF_makeother\#\CF_makeother\@%
}
\def\printatom#1{\ifmmode\rm#1\else$\rm#1$\fi}
\def\CF_nodecontent{\CF_expsecond\printatom{\csname atom_\number\CF_cntatom\endcsname\CF_nodestrut}}
\def\chemskipalign{%
\CF_doifempty\CF_bondoutcontentsaved%
{\global\let\CF_bondoutcontentsaved\CF_bondoutcontent}%
\let\CF_nodestrut\empty
}
\def\definesubmol{\CF_definesubmoltrue\def_submol}
\def\redefinesubmol{\CF_definesubmolfalse\def_submol}
\def\def_submol#1{%
\CF_cntatomgroup=0 %
\def\CF_temp{#1}%
\futurelet\CF_toksa\CF_submoltestnxttok
}
\def\CF_submoltestnxttok{%
\if[\noexpand\CF_toksa\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi
{\begingroup\CF_sanitizecatcode\CF_expsecond\CF_submolgrabopt{\CF_temp}%
}
{\afterassignment\CF_submoltestnxttoka%
\CF_cntatomgroup=0%
}%
}
\def\CF_submoltestnxttoka{\futurelet\CF_toksa\CF_submoltestnxttokb}
\def\CF_submoltestnxttokb{%
\if[\noexpand\CF_toksa\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi
{\begingroup\CF_sanitizecatcode\CF_expsecond\CF_submolgrabopt{\CF_temp}}
{\CF_expsecond{\def_submola}\CF_temp{}}%
}
\def\CF_submolgrabopt#1[#2]#{\endgroup\def_submola{#1}{#2}}
\def\def_submola#1{%
\CF_ifnum{0\CF_ifnum{\CF_cntatomgroup<0 }1{\CF_ifnum{\CF_cntatomgroup>9 }10}>0 }
{\CF_error{Invalid number of arguments in submol \detokenize\expandafter{\string#1}. Defining it with 0 argument}%
\CF_cntatomgroup=0
}
{}%
\ifcat\relax\expandafter\noexpand\CF_firsttonil#1\_nil\expandafter\CF_execfirst\else\expandafter\CF_execsecond\fi%
{\expandafter\ifdefined\CF_firsttonil#1\_nil
\ifCF_definesubmol
\CF_warning{the submol \expandafter\string\CF_firsttonil#1\_nil\space is already defined, the previous definition is lost}%
\fi
\fi
\begingroup
\CF_sanitizecatcode
\def_submolb{#1}%
}
{\ifcsname CF__#1\endcsname
\ifCF_definesubmol
\CF_warning{the submol "#1" is already defined, the previous definition is lost}%
\fi
\fi
\begingroup
\CF_sanitizecatcode
\expandafter\def_submolb\csname CF__#1\endcsname
}%
}
\def\def_submolb#1#2#3{%
\def\CF_tempa{#2}\CF_doifnotempty{#2}{\CF_expsecond{\CF_expsecond\CF_substonly{\number\CF_cntatomgroup}\CF_tempa}{\CFhash}{\CFhash}}%
\def\CF_tempb{#3}\CF_expsecond{\CF_expsecond\CF_substonly{\number\CF_cntatomgroup}\CF_tempb}{\CFhash}{\CFhash}%
\CF_expsecond{\CF_expsecond{\def_submolc{#1}}\CF_tempa}\CF_tempb
}
\def\def_submolc#1#2#3{%
\endgroup
\begingroup
\global\toks0{\gdef\CFthesubmol}%
\CF_ifnum{\CF_cntatomgroup>0 }
{\foreach\CF_x in {1,...,\CF_cntatomgroup}{%
\global\toks0\expandafter{\expanded{\the\toks0\CFhash\CF_x}}%
}%
}
{}%
\CF_sanitizecatcode \catcode`\#6 \endlinechar-1 \everyeof{\noexpand}%
\CF_ifempty{#2}%
{\scantokens\expandafter{\the\toks0{\empty#3}}%
}%
{\scantokens\expandafter{%
\the\toks0{%
\expanded{%
\csname CF_exec%
\ifdim\csname CF_currentangle\endcsname pt>90pt
\ifdim\csname CF_currentangle\endcsname pt<270pt
first%
\else
second%
\fi
\else
second%
\fi
\endcsname
{\unexpanded{#2}}{\unexpanded{#3}}%
}%
}%
}%
}%
\endgroup
\let#1\CFthesubmol
}
\def\CF_seeknode#1#2#3{%
\let#2\empty
\def#3{#1}%
\CF_iffirsttokmatch{#1}{ }%
{\CF_expsecond\CF_seeknodea{\romannumeral-`\.\noexpand#1}#2#3}%
{\CF_seeknodea{#1}#2#3}%
}
\def\CF_seeknodea#1#2#3{%
\CF_ifempty{#1}%
{\let#3\empty
}
{\futurelet\CF_toksa\CF_gobtonil#1\relax\_nil
\CF_ifx\CF_toksa\CF_sptoken
{\CF_addtomacro#2{ }%
\CF_expsecond\CF_seeknodea{\CF_afterspace#1\_nil}#2#3%
}%
{\CF_ifx\CF_toksa\bgroup
{\CF_eaddtomacro#2{\expandafter{\CF_firsttonil#1\_nil}}%
\CF_expsecond\CF_seeknodea{\CF_gobarg#1}#2#3%
}%
{\CF_ifx!\CF_toksa%
{\def\CF_seeksubmloltemp{#1}%
\CF_seeksubmola
\CF_expsecond\CF_seeknodea\CF_seeksubmloltemp#2#3%
}
{\CF_iffirsttokina{-=(*<>~}%
{\def#3{#1}%
}%
{\CF_eaddtomacro#2{\CF_firsttonil#1\_nil}%
\CF_expsecond\CF_seeknodea{\CF_gobarg#1}#2#3%
}%
}
}%
}%
}%
}
%
%
\def\CF_assignbondcode#1#2{%
\futurelet\CF_toksa\CF_gobtonil#1\_nil
\edef#2{%
\ifx-\CF_toksa1\else
\ifx=\CF_toksa2\else
\ifx~\CF_toksa3\else
\ifx>\CF_toksa4\else
\ifx<\CF_toksa5\else0%
\fi\fi\fi\fi\fi}%
\ifnum#2>3 %
\CF_expafter{\futurelet\CF_toksa\CF_gobtonil}{\CF_gobarg#1\_nil}%
\CF_ifx:\CF_toksa
{\edef#2{\number\numexpr#2+2}%
}%
{\CF_ifx|\CF_toksa%
{\edef#2{\number\numexpr#2+4}}
{}%
}%
\fi
}
\def\CF_grabbondoffseta#1,#2\_nil{%
\def\CF_startoffset{#1}\def\CF_endoffset{#2}%
}
\def\CF_grabbondoffset#1(#2)#3\_nil{%
\CF_doifnotempty{#2}%
{\CF_ifinstr{#2},%
{\CF_grabbondoffseta#2\_nil}%
{\def\CF_startoffset{#2}}%
}%
\def\CF_remainafterbond{#3}%
}
\def\CF_analysebond#1#2{%
\CF_assignbondcode{#1}#2%
\CF_expsecond{\def\CF_remainafterbond}{\CF_gobarg#1}%
\let\CF_doublebondtype\CF_zero
\ifnum#2=2 %
\CF_expafter{\futurelet\CF_toksa\CF_gobtonil}{\CF_gobarg#1\_nil}%
\CF_ifx^\CF_toksa
{\def\CF_doublebondtype{1}%
\CF_expsecond{\def\CF_remainafterbond}{\CF_gobtwoargs#1}%
}
{\expandafter\ifx\CF_underscore\CF_toksa
\def\CF_doublebondtype{2}%
\CF_expsecond{\def\CF_remainafterbond}{\CF_gobtwoargs#1}%
\fi
}%
\else
\ifnum#2>5 %
\CF_expsecond{\def\CF_remainafterbond}{\CF_gobtwoargs#1}%
\fi
\fi
\CF_expsecond\CF_iffirsttokmatch\CF_remainafterbond\CFhash
{\CF_eexpsecond\CF_iffirsttokmatch{\expandafter\CF_gobarg\CF_remainafterbond.}(%
{\expandafter\CF_grabbondoffset\CF_remainafterbond\_nil}
{}%
}%
{}%
\CF_expsecond\CF_iffirsttokmatch\CF_remainafterbond @%
{\expandafter\CF_grabmovearg\CF_remainafterbond\_nil}%
{}%
\CF_expsecond\CF_iffirsttokmatch{\CF_remainafterbond}[%
{\expandafter\CF_analyseoptarg\CF_remainafterbond\_nil\CF_remainafterbond
}%
{\let\CF_currentstringangle\CF_defaultstringangle
\let\CF_currentlength\CF_defaultlength
\let\CF_currentfromatom\CF_defaultfromatom
\let\CF_currenttoatom\CF_defaulttoatom
\let\CF_currenttikz\CF_defaulttikz
\let\CF_movebondname\empty
}%
\ifCF_incycle
\pgfmathsetmacro\CF_cycleincrementangle{360/\CF_cyclenum+\CF_initcycleangle}%
\edef\CF_currentstringangle{::+\CF_cycleincrementangle}%
\def\CF_initcycleangle{0}%
\let\CF_currentlength\CF_defaultlength%
\fi
\CF_expsecond\CF_setbondangle{\CF_currentstringangle}\CF_currentangle
}
\def\CF_setbondangle#1#2{%
\CF_ifempty{#1}%
{\let#2\CF_defaultangle
}
{\if:\expandafter\noexpand\CF_firsttonil#1\_nil
\if:\CF_threeea\noexpand\expandafter\CF_firsttonil\CF_gobarg#1\_nil
\pgfmathsetmacro#2{\CF_previousangle+\expandafter\CF_gobarg\CF_gobarg#1}%
\else
\pgfmathsetmacro#2{\CF_gobarg#1}%
\fi
\else
\pgfmathsetmacro#2{#1*\CF_angleincrement}%
\fi%
\ifdim\ifdim#2pt<0pt -\fi#2pt>360pt
\pgfmathsetmacro#2{#2-360*floor(#2/360)}%
\fi%
\ifdim#2pt<0pt
\pgfmathsetmacro#2{#2+360}%
\fi
}%
}
\def\CF_analysemovearg#1,#2\_nil#3{%
\def#3{#1}\def\CF_movebondcoeff{#2}%
}
%
%
\def\CF_grabmovearg @#1#2\_nil{%
\CF_ifinstr{#1},%
{\CF_analysemovearg#1\_nil\CF_movebondname}%
{\def\CF_movebondname{#1}\def\CF_movebondcoeff{0.5}}%
\def\CF_remainoptarg{#2}%
}
\def\CF_testemptyandassign#1#2#3{%
\CF_ifempty{#2}
{\let#1#3}
{\def#1{#2}}%
}
\def\CF_parseoptlist#1,#2,#3,#4,#5\_nil{%
\CF_testemptyandassign\CF_currentstringangle{#1}\CF_defaultstringangle
\CF_testemptyandassign\CF_currentlength {#2}\CF_defaultlength
\CF_testemptyandassign\CF_currentfromatom {#3}\CF_defaultfromatom
\CF_testemptyandassign\CF_currenttoatom {#4}\CF_defaulttoatom
\CF_expsecond{\CF_testemptyandassign\CF_currenttikz}{\CF_sanitizelastitem#5,\empty\_nil}\CF_defaulttikz
}%
\def\CF_analyseoptarg[#1]{%
\CF_doifnotempty{#1}%
{\CF_iffirsttokmatch{#1}{@}%
{\CF_grabmovearg#1\_nil
}
{\let\CF_movebondname\empty
\def\CF_remainoptarg{#1}%
}%
\expandafter\CF_parseoptlist\CF_remainoptarg,\empty,\empty,\empty,\empty\_nil
}%
\CF_analyseoptarga\relax
}
\def\CF_analyseoptarga#1\_nil#2{%
\CF_expsecond{\def#2}{\CF_gobarg#1}%
}
\def\CF_seeksubmol#1#2{%
\def\CF_seeksubmloltemp{#1}%
\CF_seeksubmola
\let#2\CF_seeksubmloltemp
}
\def\CF_seeksubmola{%
\CF_expsecond{\def\CF_seeksubmloltemp}{\romannumeral-`\.\expandafter\noexpand\CF_seeksubmloltemp}%
\CF_expsecond\CF_iffirsttokmatch{\CF_seeksubmloltemp}!%
{\CF_eexpsecond{\def\CF_seeksubmloltemp}{\expandafter\CF_gobarg\CF_seeksubmloltemp}%
\CF_ifx\empty\CF_seeksubmloltemp
{\CF_error{no submol name found after "!"}}
{}%
\ifcat\relax\CF_threeea\noexpand\expandafter\CF_firsttonil\CF_seeksubmloltemp*\_nil
\expandafter\CF_seeksubmolb\CF_seeksubmloltemp\_nil
\else
\expandafter\CF_seeksubmolc\CF_seeksubmloltemp\_nil
\fi
\CF_seeksubmola
}%
{}%
}
\def\CF_seeksubmolb#1{\CF_seeksubmold#1\relax}
\def\CF_seeksubmolc#1{\expandafter\CF_seeksubmold\csname CF__#1\endcsname\relax}%
\def\CF_seeksubmold#1#2\_nil{%
\CF_expsecond{\CF_eexpsecond{\def\CF_seeksubmloltemp}}{\expandafter#1\CF_gobarg#2}%
}
\def\CF_insertemptygroup#1{%
\CF_expsecond{\def#1}{\expandafter{\expandafter}#1}%
}
\def\chemfig{\CF_testopt\CF_chemfiga{}}
\def\CF_chemfiga[#1]{%
\begingroup
\CF_sanitizecatcode
\CF_exptwomacroargs\CF_chemfigb\CF_begintikzpicture\CF_endtikzpicture[#1]%
}
\def\CF_chemfigb#1#2[#3]#4{%
\endgroup
\begingroup
\setchemfig{#3}%
\CF_ifinsidetikz
{\pgfinterruptpicture
\let\CF_atendofchemfig\endpgfinterruptpicture
}
{\let\CF_atendofchemfig\relax
}%
\expanded{%
\unexpanded{#1}[%
remember picture,%
every node/.style={%
anchor=base,%
inner sep=0pt,%
outer sep=0pt,%
minimum size=0pt,%
\unexpanded\expandafter{\CF_atomstyle}%
},%
baseline,%
\unexpanded\expandafter{\CF_chemfigstyle}%
]%
}%
\begingroup%
\let\CF_hooklist\empty
\ifboolKV[chemfig]{fixed length}
{\CF_macrofixedbondlengthtrue}
{\CF_macrofixedbondlengthfalse}%
\ifboolKV[chemfig]{bond join}
{\let\CF_drawaxisbond\CF_drawaxisbondjoin}
{\let\CF_drawaxisbond\CF_drawaxisbondnojoin}%
\ifboolKV[chemfig]{cram rectangle}
{\let\CF_clipcramornot\CF_gobtikzinstruction}
{\let\CF_clipcramornot\clip}%
\CF_incyclefalse
\CF_cntgroup0
\ifboolKV[chemfig]{autoreset cntcycle}
{\global\CF_cntcycle0 }
{}%
\let\CF_lastaction\CF_zero%
\let\CF_startoffset\empty
\let\CF_endoffset\empty
\let\CF_bondoutcontentsaved\empty
\def\CF_cycleanglecorrection{180/\CF_cyclenum}%
\def\CF_defaultangle{0}%
\def\CF_defaultstringangle{:0}%
\def\CF_defaultlength{1}%
\let\CF_defaultfromatom\empty%
\let\CF_defaulttoatom\empty%
\let\CF_defaulttikz\empty
\let\CF_previousbondangle\empty
\let\CF_joinbond\CF_zero
\let\CF_previoustikz\empty
\everyeof{\_nil}\endlinechar-1
\CF_sanitizecatcode
\expandafter\CF_assigntonil\expandafter\CF_molecule\scantokens{#4}%
\CF_expsecond{\CF_substall\CF_molecule}\CFhash\CFhash
\CF_expsecond\CF_chemfigc{\CF_molecule}%
%
#2%
\CF_atendofchemfig
\endgroup
\let\CF_flipstate\CF_zero
}
\def\CF_chemfigc#1{%
\ifnum\CF_lastaction=3
\ifCF_incycle
\def\CF_defaultangle{0}%
\else
\ifnum\CF_cntcyclebonds=0 %
\pgfmathsetmacro\CF_defaultangle{\CF_previousangle+180+\CF_cycleanglecorrection}%
\else
\pgfmathsetmacro\CF_defaultangle{\CF_previousangle-90+180/\CF_cyclenum}%
\fi
\fi
\let\CF_defaultstringangle\empty
\fi
\let\CF_currentangle\CF_defaultangle
\def\CF_molecule{#1}%
\CF_expsecond\CF_seeksubmol\CF_molecule\CF_molecule%
\if[\CF_threeea\noexpand\expandafter\CF_firsttonil\CF_molecule\_nil
\expandafter\CF_analyseoptarg\CF_molecule\_nil\CF_molecule
\CF_expsecond\CF_setbondangle{\CF_currentstringangle}\CF_currentangle
\let\CF_defaultangle\CF_currentangle
\let\CF_previousangle\CF_currentangle
\CF_doifnotempty\CF_currentstringangle{\let\CF_defaultangle\CF_currentangle}%
\CF_doifnotempty\CF_currentlength {\let\CF_defaultlength\CF_currentlength}%
\CF_doifnotempty\CF_currentfromatom {\let\CF_defaultfromatom\CF_currentfromatom}%
\CF_doifnotempty\CF_currenttoatom {\let\CF_defaulttoatom\CF_currenttoatom}%
\CF_doifnotempty\CF_currenttikz {\let\CF_defaulttikz\CF_currenttikz}%
\CF_expsecond\CF_seeksubmol\CF_molecule\CF_molecule
\fi
\edef\CF_defaultstringangle{:\CF_defaultangle}%
\let\CF_currentlength\CF_defaultlength
\let\CF_currentfromatom\CF_defaultfromatom
\let\CF_currenttoatom\CF_defaulttoatom
\let\CF_currenttikz\CF_defaulttikz
\ifCF_incycle%
\let\CF_currentangle\CF_previousangle
\pgfmathsetmacro\CF_cyclearcinitangle{\CF_currentangle+\CF_initcycleangle+180/\CF_cyclenum+90}%
\pgfmathsetmacro\CF_centeroffset{\CF_currentlength*\CF_atomsep/(2*sin(180/\CF_cyclenum))}%
\node[at=(\CF_bondoutnode),shift=(\CF_cyclearcinitangle:\CF_centeroffset pt),anchor=center](cyclecenter\number\CF_cntcycle){};%
\ifboolKV[chemfig]{show cntcycle}
{\node[at=(cyclecenter\number\CF_cntcycle),anchor=center,overlay]{\tiny\number\CF_cntcycle};}
{}%
\ifCF_cyclearc%
\pgfmathsetmacro\CF_cyclearcradius{\CF_cycleradiuscoeff*\CF_currentlength*\CF_atomsep/(2*tan(180/\CF_cyclenum))}%
\node[at=(cyclecenter\number\CF_cntcycle),shift=(\CF_cyclearcstartangle:\CF_cyclearcradius pt)](initarc){};%
\CF_expafter{\draw[}\CF_cyclearcdirecttikz](initarc) arc (\CF_cyclearcstartangle:\CF_cyclearcendangle:\CF_cyclearcradius pt);%
\fi
\else
\let\CF_currentangle\CF_defaultangle
\fi
\ifnum\CF_lastaction=0
\let\CF_previousangle\CF_defaultangle
\node(CF_node){};
\CF_expsecond\CF_iffirsttokin{\CF_molecule}{-=(*~?<>}%
{\CF_insertemptygroup\CF_molecule}%
{}%
\fi
\CF_chemfigd
}
\def\CF_chemfigd{%
\let\CF_nextaction\CF_chemfigd%
\CF_ifx\CF_molecule\empty
{\let\CF_nextaction\endgroup
}
{\CF_expsecond\CF_seeknode{\CF_molecule}\CF_currentatomgroup\CF_molecule
\CF_ifx\empty\CF_currentatomgroup%
{\def\CF_bondoutnode{%
n\CF_lastgroupnumber-%
\ifx\CF_currentfromatom\empty
\ifdim\CF_currentangle pt<90pt
\number\CF_cntatomgroup
\else
\ifdim\CF_currentangle pt>270pt
\number\CF_cntatomgroup
\else
1%
\fi
\fi
\else
\CF_currentfromatom
\fi}%
\CF_expafter{\futurelet\CF_toksa\CF_gobtonil}{\CF_molecule\relax\_nil}%
\CF_iffirsttokina{-=<>~}%
{\ifnum\CF_lastaction=2 %
\CF_insertemptygroup\CF_molecule%
\edef\CF_bondoutnode{\CF_bondoutnode}%
\else
\ifCF_incycle
\advance\CF_cntcyclebonds1
\fi
\CF_expsecond\CF_analysebond{\CF_molecule}\CF_bondtype
\edef\CF_bondoutnode{\CF_bondoutnode}%
\let\CF_molecule\CF_remainafterbond
\ifCF_incycle
\ifnum\CF_cntcyclebonds=\CF_cyclenum\relax
\CF_threeea\CF_execfirst
\else
\ifnum\CF_cntcyclebonds=1
\let\CF_cyclefirsttikz\CF_currenttikz
\CF_doifnotempty\CF_startoffset{\let\CF_cyclejoinlast\CF_zero}%
\fi
\CF_threeea\CF_execsecond
\fi
\else
\expandafter\CF_execsecond
\fi
{\let\CF_nextaction\endgroup
\CF_drawbond\CF_bondtype{\CF_bondoutnode}{\CF_hookcycle}\CF_previousatomgroup\CF_hookatomgroup
}%
{\node[at=(\CF_bondoutnode\ifCF_incycle\else\ifCF_macrofixedbondlength.\CF_currentangle\fi\fi),shift=(\ifcase\CF_flipstate\or180-\or-\fi\CF_currentangle:\CF_currentlength*\CF_atomsep)](CF_node){};
\let\CF_previousangle\CF_currentangle
\def\CF_lastaction{2}%
}%
\fi
\ifcat\relax\detokenize\expandafter{\romannumeral-`\.\expandafter\noexpand\CF_molecule}\relax
%
\CF_insertemptygroup\CF_molecule
\fi
}%
{\edef\CF_bondoutnode{\CF_bondoutnode}%
\CF_ifx(\CF_toksa%
{\ifnum\CF_lastaction=2 %
\CF_insertemptygroup\CF_molecule
\else
\CF_expsecond\CF_grabsubmol{\CF_molecule}%
\begingroup
\ifCF_incycle\def\CF_lastaction{3}\fi%
\CF_incyclefalse
\aftergroup\CF_chemfigd
\def\CF_nextaction{\CF_expsecond\CF_chemfigc{\CF_molinparen}}%
\fi
}%
{\CF_ifx\CF_molecule\empty
{\let\CF_nextaction\endgroup
}
{%
\CF_ifx*\CF_toksa%
{\ifnum\CF_lastaction=2
\CF_insertemptygroup\CF_molecule%
\else
\ifCF_incycle
\def\CF_lastaction{3}%
\fi%
\ifnum\CF_lastaction=3
\let\CF_lastcyclenum\CF_cyclenum
\fi
\CF_eexpsecond\CF_iffirsttokmatch{\expandafter\CF_gobarg\CF_molecule}*%
{\CF_eexpsecond{\def\CF_molecule}{\expandafter\CF_gobarg\CF_molecule}%
\CF_eexpsecond\CF_iffirsttokmatch{\expandafter\CF_gobarg\CF_molecule}[%
{\expandafter\CF_cycleparsepreamblewithoptarg\CF_molecule\_nil%
}%
{\def\CF_cyclearcstartangle{0}\def\CF_cyclearcendangle{360}%
\let\CF_cyclearcdirecttikz\empty
\expandafter\CF_cycleparsepreamble\CF_molecule\_nil%
}%
\CF_cyclearctrue
}%
{\expandafter\CF_cycleparsepreamble\CF_molecule\_nil%
\CF_cyclearcfalse
}%
\CF_cntcyclebonds0
\edef\CF_hookcycle{\CF_bondoutnode}%
\let\CF_hookatomgroup\CF_previousatomgroup
\CF_ifzerodim\CF_hookatomgroup
{\def\CF_cyclejoinlast{1}}%
{\def\CF_cyclejoinlast{0}}%
\CF_incycletrue
\global\advance\CF_cntcycle1
\ifnum\CF_lastaction=3
\pgfmathsetmacro\CF_initcycleangle{360/\CF_lastcyclenum-180}%
\else
\pgfmathsetmacro\CF_initcycleangle{-180/\CF_cyclenum-90+\CF_cycleanglecorrection}%
\fi
\aftergroup\CF_chemfigd
\def\CF_nextaction{\CF_expsecond\CF_chemfigc{\CF_molinparen}}%
\fi
}%
{\CF_error{something went wrong here: \detokenize\expandafter{\CF_molecule}^^JIf you think it's a bug, please, send a Minimal Example to the author}%
}%
}%
}%
}%
}%
{\CF_expthreemacroargs\CF_drawatomgroup\CF_currentangle\CF_currenttoatom\CF_currentatomgroup
}%
}%
\CF_nextaction
}
\def\CF_cycleparsepreamble*#1#2\_nil{%
\ifnum#1<3
\CF_error{a cycle must be at least a triangle.^^JThe number following "*" must be 3 or more}%
\fi
\def\CF_molecule{#2}%
\CF_expsecond\CF_grabsubmol{\CF_molecule}%
\begingroup
\def\CF_cyclenum{#1}%
}
\def\CF_cycleparsepreamblewithoptarg*[#1]#2#3\_nil{%
\CF_cycleparseoptarg#1,\empty,\empty,\empty\_nil
\CF_cycleparsepreamble*#2#3\_nil
}
\def\CF_cycleparseoptarg#1,#2,#3\_nil{%
\CF_ifempty{#1}
{\def\CF_cyclearcstartangle{0}}
{\def\CF_cyclearcstartangle{#1}}%
\CF_ifempty{#2}
{\def\CF_cyclearcendangle{360}}
{\def\CF_cyclearcendangle{#2}}%
\CF_expsecond{\def\CF_cyclearcdirecttikz}{\CF_sanitizelastitem#3,\empty\_nil}%
}
\def\CF_grabsubmol#1{%
\begingroup
\catcode`(1 \catcode`)2
\CF_threeea
\endgroup
\expandafter\CF_grabsubmola\scantokens{\relax#1}%
}
\def\CF_grabsubmola#1\_nil{%
\expandafter\CF_assigntonil\expandafter\CF_molecule\scantokens\CF_threeea{\expandafter\CF_gobarg \CF_gobarg#1}%
\expandafter\CF_assigntonil\expandafter\CF_molinparen\scantokens\CF_threeea{\expandafter\CF_firsttonil\CF_gobarg#1\_nil}%
}
\def\CF_ifcarisupperletter#1{%
\ifcat\relax\noexpand#1%
\let\CF_next\CF_execsecond%
\else
\ifnum`#1<`A
\let\CF_next\CF_execsecond
\else
\ifnum`#1>`Z
\let\CF_next\CF_execsecond
\else
\let\CF_next\CF_execfirst
\fi
\fi
\fi
\CF_next
}
%
%
\def\CF_createnormnodes#1#2#3#4{%
\CF_doifnotempty{#3}
{\node[shape=coordinate,at=(#1),xshift=#3*\CF_normx,yshift=#3*\CF_normy](#11){};
\node[shape=coordinate,at=(#1),xshift=-#3*\CF_normx,yshift=-#3*\CF_normy](#12){};
}%
\CF_doifnotempty{#4}
{\node[shape=coordinate,at=(#2),xshift=#4*\CF_normx,yshift=#4*\CF_normy](#21){};
\node[shape=coordinate,at=(#2),xshift=-#4*\CF_normx,yshift=-#4*\CF_normy](#22){};
}%
}
\def\CF_distancebetweenpoints#1#2#3#4#5{%
\pgfextractx\CF_dim{\pgfpointanchor{#1}{#2}}\edef\CF_dimax{\the\CF_dim}%
\pgfextracty\CF_dim{\pgfpointanchor{#1}{#2}}\edef\CF_dimay{\the\CF_dim}%
\pgfextractx\CF_dim{\pgfpointanchor{#3}{#4}}\edef\CF_dimbx{\the\CF_dim}%
\pgfextracty\CF_dim{\pgfpointanchor{#3}{#4}}\edef\CF_dimby{\the\CF_dim}%
\pgfmathsetmacro#5{veclen(\CF_dimbx-\CF_dimax,\CF_dimby-\CF_dimay)}%
}
\def\CF_computenodevect#1#2{%
\CF_distancebetweenpoints{#1}{center}{#2}{center}\CF_vectorlen
\pgfmathsetmacro\CF_normx{(\CF_dimay-\CF_dimby)/\CF_vectorlen}%
\pgfmathsetmacro\CF_normy{(\CF_dimbx-\CF_dimax)/\CF_vectorlen}%
}
\def\CF_setoffset#1#2{%
\CF_doifempty#1{%
\CF_ifzerodim{#2}
{\def#1{0pt}}
{\edef#1{\CF_bondoffset}}%
}%
}
\def\CF_drawbond#1#2#3#4#5{%
\CF_setoffset\CF_startoffset#4%
\CF_setoffset\CF_endoffset#5%
\let\CF_currentbondstyle\CF_bondstyle
\CF_doifnotempty\CF_currenttikz{\CF_eaddtomacro\CF_currentbondstyle{\expandafter,\CF_currenttikz}}%
\path(#2)--(#3)coordinate[pos=0](#2@)coordinate[pos=1](#3@);%
\CF_computenodevect{#2@}{#3@}%
\pgfmathsetmacro\CF_startcoeff{\CF_startoffset/\CF_vectorlen}%
\pgfmathsetmacro\CF_endcoeff{1-\CF_endoffset/\CF_vectorlen}%
\path(#2@)--(#3@)coordinate[pos=\CF_startcoeff](#2@@)coordinate[pos=\CF_endcoeff](#3@@);%
\CF_doifnotempty\CF_movebondname%
{\path(#2@@)--(#3@@)coordinate[overlay,pos=\CF_movebondcoeff](\CF_movebondname);
\let\CF_movebondname\empty
}%
\ifcase#1\relax
\CF_error{unknown bond type, this error should not occur^^JIf you think it's a bug, send a Minimal Example to the author}%
\or%
\CF_drawaxisbond{#2}{#3}%
\or%
\ifCF_incycle
\ifnum\CF_doublebondtype=0
\def\CF_doublebondtype{1}%
\fi
\ifnum\CF_flipstate>0
\def\CF_doublebondtype{2}%
\fi
\pgfmathsetmacro\CF_doublebondlengthcorrection{\CF_doublesep*tan(180/\CF_cyclenum)}%
\fi
\ifcase\CF_doublebondtype
\CF_createnormnodes{#2@@}{#3@@}{\CF_doublesep/2}{\CF_doublesep/2}%
\CF_drawbonda(#2@@1)--(#3@@1);
\CF_drawbonda(#2@@2)--(#3@@2);
\let\CF_joinbond\CF_zero
\or
\CF_createnormnodes{#2@@}{#3@@}\CF_doublesep\CF_doublesep
\CF_drawaxisbond{#2}{#3}%
\begingroup%
\ifCF_incycle
\ifdim\CF_startoffset=0pt
\CF_edefaddtomacro\CF_currentbondstyle{,shorten <=\CF_doublebondlengthcorrection pt}%
\fi
\ifdim\CF_endoffset=0pt
\CF_edefaddtomacro\CF_currentbondstyle{,shorten >=\CF_doublebondlengthcorrection pt}%
\fi
\fi
\CF_drawbonda(#2@@1)--(#3@@1);
\endgroup
\or
\CF_createnormnodes{#2@@}{#3@@}\CF_doublesep\CF_doublesep
\CF_drawaxisbond{#2}{#3}%
\begingroup%
\ifCF_incycle
\ifdim\CF_startoffset=0pt
\CF_edefaddtomacro\CF_currentbondstyle{,shorten \ifnum\CF_flipstate=0 <=-\else>=\fi\CF_doublebondlengthcorrection pt}%
\fi
\ifdim\CF_endoffset=0pt
\CF_edefaddtomacro\CF_currentbondstyle{,shorten \ifnum\CF_flipstate=0 >=-\else<=\fi\CF_doublebondlengthcorrection pt}%
\fi
\fi
\CF_drawbonda(#2@@2)--(#3@@2);
\endgroup
\fi
\or%
\CF_createnormnodes{#2@@}{#3@@}\CF_doublesep\CF_doublesep
\CF_drawaxisbond{#2}{#3}%
\CF_drawbonda(#2@@1)--(#3@@1);
\CF_drawbonda(#2@@2)--(#3@@2);
\or%
\CF_createnormnodes{#2@@}{#3@@}{\CF_crambasewidth/2}{}%
\CF_expafter{\filldraw[}\CF_currentbondstyle,line join=bevel](#2@@1)--(#2@@2)--(#3@@)--cycle;
\let\CF_joinbond\CF_zero
\or%
\CF_createnormnodes{#3@@}{#2@@}{\CF_crambasewidth/2}{}%
\CF_expafter{\filldraw[}\CF_currentbondstyle,line join=bevel](#3@@1)--(#3@@2)--(#2@@)--cycle;
\let\CF_joinbond\CF_zero
\or%
\scope
\CF_createnormnodes{#2@@}{#3@@}{\CF_crambasewidth/2}{}%
\CF_clipcramornot(#2@@1)--(#2@@2)--(#3@@)--(#2@@1);
\CF_expafter{\draw[}\CF_currentbondstyle,dash pattern=on \CF_cramdashlength off \CF_cramdashsep,line width=\CF_crambasewidth](#2@@)--(#3@@);
\endscope
\let\CF_joinbond\CF_zero
\or%
\scope
\CF_createnormnodes{#3@@}{#2@@}{\CF_crambasewidth/2}{}%
\CF_clipcramornot(#3@@1)--(#3@@2)--(#2@@)--(#3@@1);
\CF_expafter{\draw[}\CF_currentbondstyle,dash pattern=on \CF_cramdashlength off \CF_cramdashsep,line width=\CF_crambasewidth](#3@@)--(#2@@);
\endscope
\let\CF_joinbond\CF_zero
\or%
\CF_createnormnodes{#2@@}{#3@@}{\CF_crambasewidth/2}{}%
\CF_expafter{\draw[}\CF_currentbondstyle,line join=bevel](#2@@1)--(#2@@2)--(#3@@)--cycle;
\let\CF_joinbond\CF_zero
\or%
\CF_createnormnodes{#3@@}{#2@@}{\CF_crambasewidth/2}{}%
\CF_expafter{\draw[}\CF_currentbondstyle,line join=bevel](#3@@1)--(#3@@2)--(#2@@)--cycle;
\let\CF_joinbond\CF_zero
\else
\CF_error{unknown bond type, this error should not occur^^JIf you think it's a bug, send a Minimal Example to the author}%
\fi
\let\CF_startoffset\empty
\let\CF_endoffset\empty
\let\CF_previoustikz\CF_currenttikz
\let\CF_previousbondangle\CF_previousangle
\def\CF_previousbond{#1}%
}
\def\CF_drawaxisbondnojoin#1#2{\CF_drawbonda(#1@@)--(#2@@);}
\def\CF_drawaxisbondjoin#1#2{%
\ifCF_incycle\ifnum\CF_cntcyclebonds=\CF_cyclenum\relax
\let\CF_nexttikz\CF_cyclefirsttikz
\fi\fi
\ifnum\CF_joinbond=0
\ifCF_incycle
\ifnum\CF_cntcyclebonds=\CF_cyclenum\relax
\ifnum\CF_cyclejoinlast=1
\CF_drawbonda(#1@@)--(#2@@)--%
([shift=(\CF_previousbondangle+2*\CF_cycleincrementangle:.5\pgflinewidth)]#2@@);
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
\def\CF_joinbond{1}%
\else
\CF_ifx\CF_previoustikz\CF_currenttikz
{\def\CF_joinbond{1}%
\CF_ifzerodim\CF_previousatomgroup
{\CF_ifx\CF_previousbondangle\empty%
{\CF_drawbonda(#1@@)--(#2@@);
}
{\ifdim\CF_startoffset=0pt
\ifCF_incycle
\ifnum\CF_cntcyclebonds=\CF_cyclenum\relax
\ifnum\CF_cyclejoinlast=1
\CF_ifx\CF_cyclefirsttikz\CF_currenttikz
{\CF_drawbonda([shift=(\CF_previousbondangle:-.5\pgflinewidth)]#1@@)--(#1@@)--(#2@@)--%
([shift=(\CF_previousbondangle+2*\CF_cycleincrementangle:.5\pgflinewidth)]#2@@);
}
{\CF_drawbonda([shift=(\CF_previousbondangle:-.5\pgflinewidth)]#1@@)--(#1@@)--(#2@@);
}%
\else
\CF_drawbonda([shift=(\CF_previousbondangle:-.5\pgflinewidth)]#1@@)--(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda([shift=(\CF_previousbondangle:-.5\pgflinewidth)]#1@@)--(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda([shift=(\CF_previousbondangle:-.5\pgflinewidth)]#1@@)--(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
}%
}
{\CF_drawbonda(#1@@)--(#2@@);}%
}
{\ifCF_incycle
\ifnum\CF_cntcyclebonds=\CF_cyclenum\relax
\ifnum\CF_cyclejoinlast=1
\CF_ifx\CF_nexttikz\CF_currenttikz
{\CF_drawbonda(#1@@)--(#2@@)--([shift=(\CF_previousbondangle+2*\CF_cycleincrementangle:.5\pgflinewidth)]#2@@);}%
{\CF_drawbonda(#1@@)--(#2@@);}%
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
\else
\CF_drawbonda(#1@@)--(#2@@);
\fi
}%
\fi
\ifdim\CF_endoffset=0pt \else
\let\CF_joinbond\CF_zero
\fi
}
\def\CF_drawbonda{\CF_expafter{\draw[}\CF_currentbondstyle]}
\def\CF_hookdrawall{%
\CF_doifnotempty\CF_hookdrawlist
{\expandafter\CF_hookdrawfirst\CF_hookdrawlist\_nil%
\CF_hookdrawall
}%
}
\def\CF_hookdrawfirst[#1,#2,#3]#4#5#6#7#8\_nil{%
\def\CF_hookdrawlist{#8}%
\begingroup
\let\CF_joinbond\CF_zero
\def\CF_currenttikz{#3}%
\def\CF_hookstartcontent{#6}\def\CF_hookendcontent{#7}%
\CF_ifinteger{#2}%
{\CF_drawbond{#2}{#4}{#5}\CF_hookstartcontent\CF_hookendcontent
}%
{\CF_assignbondcode{#2}\CF_bondcurrentnum
\CF_drawbond\CF_bondcurrentnum{#4}{#5}\CF_hookstartcontent\CF_hookendcontent
}%
\endgroup
}
\def\CF_extractatom#1-#2\_nil{#2}%
\def\CF_gobblemovearg @#1#2\_nil#3{%
\expandafter\def\csname atom_\number\CF_cntatom\endcsname{#2}%
\CF_ifinstr{#1},%
{\CF_analysemovearg#1\_nil#3\let\CF_movebondcoeff\empty}%
{\def#3{#1}}%
\CF_doifempty{#2}{\let\CF_nodestrut\empty}%
}%
\def\hflipnext{\def\CF_flipstate{1}}
\def\vflipnext{\def\CF_flipstate{2}}
\let\CF_flipstate\CF_zero
\def\CF_drawatomgroup#1#2#3{%
\expandafter\let\expandafter\CF_bondoutcontent%
\csname
\ifdefined\CF_bondoutnode
atom_\expandafter\CF_extractatom\CF_bondoutnode\_nil
\else
empty%
\fi
\endcsname
\global\advance\CF_cntgroup1
\let\CF_currentatom\empty
\global\let\CF_hookdrawlist\empty
\CF_cntatomgroup0 %
\CF_iffirsttokmatch{#3}?
{\CF_drawatomgroupa{{}#3}}
{\CF_drawatomgroupa{#3}}%
\def\CF_currentatomgroup{#3}%
\CF_removemovearg\CF_currentatomgroup%
\CF_ifinstr{#3}?%
{\CF_removehook\CF_currentatomgroup
\ifcat\relax\detokenize\expandafter{\romannumeral-`\.\expandafter\noexpand\CF_currentatomgroup}\relax
\let\CF_currentatomgroup\empty
\fi
}%
{}%
\CF_doifnotempty{#2}
{\ifnum#2<1
\CF_warning{no atom found at position #2, pershaps you mispelled the optional argument of the bond.}%
\else
\ifnum#2>\CF_cntatomgroup
\CF_error{no atom found at position #2, pershaps you mispelled the optional argument of the bond.}%
\fi
\fi
}%
\edef\CF_hookatomnumber{%
\CF_ifempty{#2}
{\ifdim#1pt>90pt
\ifdim#1pt<270pt
\number\CF_cntatomgroup
\else
1%
\fi
\else
1%
\fi
}
{#2%
}%
}%
\CF_cntatom\CF_hookatomnumber
\CF_ifzerodim\CF_currentatomgroup
{\let\CF_nodestrut\empty
}
{\CF_ifx\empty\CF_bondoutcontentsaved
{\def\CF_nodestrut{\vphantom\CF_bondoutcontent}}%
{\def\CF_nodestrut{\vphantom\CF_bondoutcontentsaved}}%
}%
\edef\CF_optstring{anchor=\ifnum\CF_lastaction=0 base\else\ifCF_incycle center\else\ifCF_macrofixedbondlength 180+#1\else center\fi\fi\fi,at=(CF_node),\CF_nodestyle}%
\loop
\unless\ifnum\CF_cntatom>\CF_cntatomgroup
\CF_eexpafter
{\futurelet\CF_toksa}
{\expandafter\expandafter\expandafter\CF_gobtonil\csname atom_\number\CF_cntatom\endcsname\_nil}%
\CF_ifx @\CF_toksa%
{\CF_threeea\CF_gobblemovearg\csname atom_\number\CF_cntatom\endcsname\_nil\CF_moveatomname
\CF_expafter{\node[}\CF_optstring,overlay](\CF_moveatomname){\phantom{\CF_nodecontent}};%
\let\CF_moveatomname\empty
}
{}%
\ifboolKV[chemfig]{debug}
{\CF_expafter{\node[}\CF_optstring,draw=gray](n\number\CF_cntgroup-\number\CF_cntatom){\CF_nodecontent};%
\CF_show_debug_atom
}
{\CF_expafter{\node[}\CF_optstring](n\number\CF_cntgroup-\number\CF_cntatom){\CF_nodecontent};%
}%
\let\CF_nodestrut\empty
\advance\CF_cntatom1
\edef\CF_optstring{anchor=base \ifnum\CF_flipstate=1 east\else west\fi,at=(n\number\CF_cntgroup-\number\numexpr\CF_cntatom-1.base \ifnum\CF_flipstate=1 west\else east\fi),\CF_nodestyle}%
\repeat
\CF_cntatom\CF_hookatomnumber
\ifnum\CF_lastaction=2 %
\gdef\CF_cycleanglecorrection{0}%
\CF_drawbond\CF_bondtype{\CF_bondoutnode}{n\number\CF_cntgroup-\number\CF_cntatom}\CF_previousatomgroup\CF_currentatomgroup
\fi
\def\CF_lastaction{1}%
\loop
\ifnum\CF_cntatom>1
\advance\CF_cntatom-1
\edef\CF_optstring{anchor=base \ifnum\CF_flipstate=1 west\else east\fi,at=(n\number\CF_cntgroup-\number\numexpr\CF_cntatom+1.base \ifnum\CF_flipstate=1 east\else west\fi),\CF_nodestyle}%
\CF_eexpafter
{\futurelet\CF_toksa}
{\expandafter\expandafter\expandafter\CF_gobtonil\csname atom_\number\CF_cntatom\endcsname\_nil}%
\CF_ifx @\CF_toksa%
{\CF_threeea\CF_gobblemovearg\csname atom_\number\CF_cntatom\endcsname\_nil\CF_moveatomname
\CF_expafter{\node[}\CF_optstring,overlay](\CF_moveatomname){\phantom{\CF_nodecontent}};%
\let\CF_moveatomname\empty
}
{}%
\ifboolKV[chemfig]{debug}
{\CF_expafter{\node[}\CF_optstring,draw=gray](n\number\CF_cntgroup-\number\CF_cntatom){\CF_nodecontent};%
\CF_show_debug_atom
}
{\CF_expafter{\node[}\CF_optstring](n\number\CF_cntgroup-\number\CF_cntatom){\CF_nodecontent};%
}%
\repeat
\ifboolKV[chemfig]{debug}
\CF_show_debug_atomgroup
{}%
\CF_hookdrawall
\edef\CF_lastgroupnumber{\number\CF_cntgroup}%
\let\CF_previousatomgroup\CF_currentatomgroup
}
\def\CF_show_debug_atom{%
\node[at=(n\number\CF_cntgroup-\number\CF_cntatom.south),anchor=north,outer sep=1pt,overlay]{$\scriptscriptstyle\color{gray}\number\CF_cntatom$};%
}
\def\CF_show_debug_atomgroup{%
\draw[red,overlay] ([xshift=-.5pt,yshift=.5pt]n\number\CF_cntgroup-1.north west) rectangle ([xshift=.5pt,yshift=-.5pt]n\number\CF_cntgroup-\number\CF_cntatomgroup.south east);%
\path (n\number\CF_cntgroup-1.north west) -- (n\number\CF_cntgroup-\number\CF_cntatomgroup.north east)
node [midway,yshift=1pt,overlay] {$\scriptscriptstyle\color{red}\number\CF_cntgroup$};
}
\def\CF_keepmovearg @#1#2\_nil{\def\CF_currentatom{@{#1}}}
\def\CF_drawatomgroupa#1{%
\CF_ifempty{#1}
{\expandafter\let\csname atom_\number\CF_cntatomgroup\endcsname\CF_currentatom
}
{\advance\CF_cntatomgroup1
\futurelet\CF_toksa\CF_gobtonil#1\_nil
\CF_ifx @\CF_toksa
{\CF_keepmovearg#1\_nil
\CF_removemovearga#1\_nil\CF_aftermovearg
\CF_expsecond\CF_drawatomgroupb{\CF_aftermovearg}%
}%
{\let\CF_currentatom\empty
\CF_drawatomgroupb{#1}%
}%
}%
}
\def\CF_drawatomgroupb#1{%
\CF_ifempty{#1}
{\expandafter\let\csname atom_\number\CF_cntatomgroup\endcsname\CF_currentatom
}
{\futurelet\CF_toksa\CF_gobtonil#1\_nil
\CF_ifx\bgroup\CF_toksa
{\CF_eaddtomacro\CF_currentatom{\expandafter{\CF_firsttonil#1\_nil}}%
\CF_expsecond\CF_drawatomgroupba{\CF_gobarg#1}%
}%
{\CF_ifx\CF_sptoken\CF_toksa
{\CF_addtomacro\CF_currentatom{ }%
\CF_expsecond\CF_drawatomgroupba{\CF_afterspace#1\_nil}%
}%
{\CF_eaddtomacro\CF_currentatom{\CF_firsttonil#1\_nil}%
\CF_expsecond\CF_drawatomgroupba{\CF_gobarg#1}%
}%
}%
}%
}
%
\def\CF_removemovearg#1{%
\CF_expsecond\CF_ifinstr{#1}@%
{\expandafter\CF_removemovearga#1\_nil#1%
\CF_removemovearg#1%
}%
{}%
}
%
\def\CF_removemovearga#1\_nil#2{%
\def\CF_removemoveargb##1@{%
\CF_expsecond{\def#2}{\CF_gobarg##1}%
\CF_removemoveargc\relax
}%
\def\CF_removemoveargc##1\_nil{\CF_eaddtomacro#2{\CF_gobtwoargs##1}}%
\CF_removemoveargb\relax#1\_nil
}
\def\CF_drawatomgroupba#1{%
\CF_ifempty{#1}
{\expandafter\let\csname atom_\number\CF_cntatomgroup\endcsname\CF_currentatom
\let\CF_currentatom\empty
}
{\futurelet\CF_toksa\CF_gobtonil#1\_nil
\CF_ifx @\CF_toksa
{\expandafter\let\csname atom_\number\CF_cntatomgroup\endcsname\CF_currentatom
\let\CF_currentatom\empty
\CF_drawatomgroupa{#1}%
}%
{\CF_ifx|\CF_toksa
{\expandafter\let\csname atom_\number\CF_cntatomgroup\endcsname\CF_currentatom
\let\CF_currentatom\empty
\CF_expsecond\CF_drawatomgroupa{\CF_gobarg#1}%
}%
{\CF_ifx\CF_sptoken\CF_toksa
{\CF_addtomacro\CF_currentatom{ }%
\CF_expsecond\CF_drawatomgroupba{\CF_afterspace#1\_nil}%
}%
{\CF_ifx\bgroup\CF_toksa
{\CF_eaddtomacro\CF_currentatom{\expandafter{\CF_firsttonil#1\_nil}}%
\CF_expsecond\CF_drawatomgroupba{\CF_gobarg#1}%
}%
{\CF_expsecond\CF_ifcarisupperletter{\CF_firsttonil#1\_nil}%
{\expandafter\let\csname atom_\number\CF_cntatomgroup\endcsname\CF_currentatom
\let\CF_currentatom\empty
\CF_drawatomgroupa{#1}%
}%
{\CF_ifx?\CF_toksa
{\CF_expsecond\CF_iffirsttokmatch{\CF_gobarg#1}[%
{\expandafter\CF_graboptarg\CF_gobarg#1\_nil\CF_afterhook}%
{\CF_expafter{\CF_graboptarg[]}{\CF_gobarg#1}\_nil\CF_afterhook}%
\CF_exptwomacroargs\CF_ifinstr{\CF_hooklist}{\expandafter(\CF_hookcurrentname)}%
{\CF_expsecond\CF_hookparselist{\CF_hookcurrentname}%
\CF_edefaddtomacro\CF_hookdrawlist{%
[\CF_hookcurrentname,\CF_hookcurrentlink,\CF_hookcurrenttikz]{\CF_hooksavedcoord}{n\number\CF_cntgroup-\number\CF_cntatomgroup}}%
\CF_eaddtomacro\CF_hookdrawlist{\expandafter{\CF_hooksavedcontent}}%
\CF_eaddtomacro\CF_hookdrawlist{\expandafter{\CF_currentatom}}%
\global\let\CF_hookdrawlist\CF_hookdrawlist
}%
{\CF_edefaddtomacro\CF_hooklist{(\CF_hookcurrentname)|n\number\CF_cntgroup-\number\CF_cntatomgroup|}%
\CF_eaddtomacro\CF_hooklist{\CF_currentatom|}%
\global\let\CF_hooklist\CF_hooklist
}%
\CF_expsecond\CF_drawatomgroupba{\CF_afterhook}%
}%
{\CF_eaddtomacro\CF_currentatom{\CF_firsttonil#1\_nil}%
\CF_expsecond\CF_drawatomgroupba{\CF_gobarg#1}%
}%
}%
}%
}%
}%
}%
}%
}
\def\CF_kookdefaultname{a}
\def\CF_hookdefaultlink{-}
\def\CF_hookdefaulttikz{}
\def\CF_hookparseoptarg#1,#2,#3\_nil{%
\CF_testemptyandassign\CF_hookcurrentname{#1}\CF_kookdefaultname
\CF_testemptyandassign\CF_hookcurrentlink{#2}\CF_hookdefaultlink
\CF_testemptyandassign\CF_hookcurrenttikz{#3}\CF_hookdefaulttikz
}
\def\CF_graboptarg[#1]#2\_nil#3{%
\CF_hookparseoptarg#1,,\_nil
\def#3{#2}%
}
\def\CF_hookparselist#1{%
\def\CF_hookparselista##1(#1)|##2|##3|##4\_nil{\def\CF_hooksavedcoord{##2}\def\CF_hooksavedcontent{##3}}%
\expandafter\CF_hookparselista\CF_hooklist\_nil
}
\def\CF_removehook#1{%
\CF_expsecond\CF_ifinstr{#1}?%
{\CF_expafter{\CF_removehooka\relax}#1\_nil#1%
\CF_removehook#1%
}
{}%
}
\def\CF_removehooka#1?#2\_nil#3{%
\CF_iffirsttokmatch{#2}[%
{\CF_removehookb#1?#2\_nil#3}
{\CF_expsecond{\def#3}{\CF_gobarg#1#2}}%
}
\def\CF_removehookb#1?[#2]#3\_nil#4{\CF_expsecond{\def#4}{\CF_gobarg#1#3}}
\defKV[charge]{%
.radius = \CF_defifempty\CF_dotradius {#1}{0.15ex},
:sep = \CF_defifempty\CF_dotsep {#1}{0.3em},
.style = \CF_defifempty\CF_dotstyle {#1}{fill=black},
"length = \CF_defifempty\CF_rectlength{#1}{1.5ex},
"width = \CF_defifempty\CF_rectwidth {#1}{.3ex}
}
\def\setcharge#{\setKV[charge]}
\def\resetcharge{\restoreKV[charge]}
\setKVdefault[charge]{%
debug = false,%
macro atom = \printatom,%
circle = false,%
macro charge = ,%
extra sep = 1.5pt,%
overlay = true,%
shortcuts = true,%
lewisautorot = true,%
.radius = 0.15ex,%
:sep = 0.3em,%
.style = {fill=black},%
"length = 1.5ex,%
"width = .3ex,%
"style = {black,line width=0.4pt},%
|style = {black,line width=0.4pt},%
}%
\def\chargedot{\CF_testopt\chargedot_a{}}
\def\chargedot_a[#1]{%
\begingroup
\setKV[charge]{#1}%
\CF_expafter{\tikz\draw[}{\CF_dotstyle}](0,0)circle(\CF_dotradius);%
\endgroup
}
\def\chargeddot{\CF_testopt\chargeddot_a{}}
\def\chargeddot_a[#1]{%
\begingroup
\setKV[charge]{#1}%
\ifboolKV[charge]{lewisautorot}
{\pgfmathsetmacro\CF_lewisrot{90+\chargeangle}}
{\def\CF_lewisrot{0}}%
\pgfmathsetmacro\CF_halfsep{\CF_dotsep/2}%
\tikzpicture[anchor=center,rotate=\CF_lewisrot]%
\CF_expafter{\draw[}{\CF_dotstyle}]%
(-\CF_halfsep pt,0)circle(\CF_dotradius)%
(\CF_halfsep pt,0)circle(\CF_dotradius);%
\endtikzpicture
\endgroup
}
\def\chargerect{\CF_testopt\chargerect_a{}}
\def\chargerect_a[#1]{%
\begingroup
\setKV[charge]{#1}%
\ifboolKV[charge]{lewisautorot}
{\pgfmathsetmacro\CF_lewisrot{90+\chargeangle}}
{\def\CF_lewisrot{0}}%
\pgfmathsetmacro\CF_halfwidth{\CF_rectwidth/2}%
\pgfmathsetmacro\CF_halflength{\CF_rectlength/2}%
\tikzpicture[anchor=center,rotate=\CF_lewisrot]%
\CF_eexpafter{\draw[}{\useKV[charge]{"style}}](-\CF_halflength pt,-\CF_halfwidth pt)rectangle(\CF_halflength pt,\CF_halfwidth pt);%
\endtikzpicture
\endgroup
}
\def\chargeline{\CF_testopt\chargeline_a{}}
\def\chargeline_a[#1]{%
\begingroup
\setKV[charge]{#1}%
\ifboolKV[charge]{lewisautorot}
{\pgfmathsetmacro\CF_lewisrot{90+\chargeangle}}
{\def\CF_lewisrot{0}}%
\pgfmathsetmacro\CF_halflength{\CF_rectlength/2}%
\tikzpicture[anchor=center,rotate=\CF_lewisrot]%
\CF_eexpafter{\draw[}{\useKV[charge]{|style}}](-\CF_halflength pt,0)--(\CF_halflength pt,0);%
\endtikzpicture
\endgroup
}
\def\CF_enableshortcuts{%
\let\CF_saveddot \.\let\.\chargedot
\let\CF_savedddot\:\let\:\chargeddot
\let\CF_savedrect\"\let\"\chargerect
\let\CF_savedline\|\let\|\chargeline
\let\enableshortcuts\relax
\let\disableshortcuts\CF_disableshortcuts
}
\def\CF_disableshortcuts{%
\let\.\CF_saveddot
\let\:\CF_savedddot
\let\"\CF_savedrect
\let\|\CF_savedline
\let\enableshortcuts\CF_enableshortcuts
\let\disableshortcuts\relax
}
\def\charge{%
\begingroup
\catcode`\: 12
\charge_a{true}%
}
\def\Charge{%
\begingroup
\catcode`\: 12
\charge_a{false}%
}
\def\charge_a#1#2{%
\CF_testopt{\charge_b{#1}}{}#2\_nil
}
\def\charge_b#1[#2]#3\_nil{%
\charge_c{#1}[#2]{#3}%
}
\def\charge_c#1[#2]#3#4{%
\setcharge{overlay=#1,#2}%
\setbox\CF_chargebox\hbox{\useKV[charge]{macro atom}{#4}}%
\CF_ifinsidetikz
{\pgfinterruptpicture
\let\CF_atendofcharge\endpgfinterruptpicture
}
{\let\CF_atendofcharge\relax
}%
\expanded{\noexpand
\tikzpicture[every node/.style={%
\ifboolKV[charge]{debug}{draw=red,}{}%
anchor=base,%
inner sep=0pt,%
outer sep=0pt,%
minimum size=0pt},%
baseline]}%
\expanded{\noexpand
\node[%
\ifboolKV[charge]{circle}{circle,}{}%
\ifboolKV[charge]{debug}{draw=green,}{}%
anchor=base%
]}%
(atombox)at(0,0)%
{\copy\CF_chargebox};%
\expanded{\noexpand
\node[%
\ifboolKV[charge]{circle}{circle,}{}%
\ifboolKV[charge]{debug}{draw=blue,}{}%
anchor=base,%
inner sep=\useKV[charge]{extra sep},%
overlay%
]}%
(atom)at(0,0){%
\vrule width0pt height\ht\CF_chargebox depth\dp\CF_chargebox
\vrule width\wd\CF_chargebox height\CF_zero depth\CF_zero};%
\let\enableshortcuts\relax
\let\disableshortcuts\relax
\ifboolKV[charge]{shortcuts}\CF_enableshortcuts{}%
\charge_d#3,\CF_quark=%
\endtikzpicture
\CF_atendofcharge
\endgroup
}
\def\charge_d#1={%
\CF_ifx\CF_quark{#1}%
{}
{\CF_striplastsp{#1}\charge_e=}%
}
\def\charge_e#1={%
\CF_ifinstr{#1}[
{\charge_f#1=}
{\charge_f#1[]=}%
}
\def\charge_f#1[#2]={%
\CF_ifinstr{#1}:
{\charge_g#1[#2]=}
{\charge_g#1:0pt[#2]=}%
}
\def\charge_g#1:#2[#3]=#4,{%
\CF_stripsp{#1}\CF_ifinteger
{\pgfmathsetmacro\chargeangle{mod(#1,360)}%
}
{\pgfmathanglebetweenpoints{\pgfpointanchor{atom}{center}}{\CF_stripsp{#1}{\pgfpointanchor{atom}}}%
\let\chargeangle\pgfmathresult%
}%
\edef\CF_offset{\the\dimexpr#2+0pt}%
\CF_stripsp{#1}{\CF_distancebetweenpoints{atom}{center}{atom}}\CF_chargedistance
\CF_eexpafter{\node[anchor=center,}{\ifboolKV[charge]{overlay}{overlay,}{}}#3]%
at([shift=(\chargeangle:\CF_chargedistance pt+\CF_offset)]atom.center){\useKV[charge]{macro charge}{#4}};%
\charge_d
}
\def\Chembelow{\begingroup\let\CF_temp\CF_gobarg\CF_chembelowa}
\def\chembelow{\begingroup\let\CF_temp\CF_id\CF_chembelowa}
\def\CF_chembelowa{\CF_testopt\CF_chembelowb\CF_stacksep}
\def\CF_chembelowb[#1]#2#3{%
\setbox\CF_box\hbox{\printatom{#2}}%
\expandafter\vtop\CF_temp{to\ht\CF_box}{%
\offinterlineskip
\hbox{\printatom{#2}}%
\kern#1\relax
\hbox to\wd\CF_box{\hss\printatom{#3}\hss}%
\CF_temp\vss
}%
\endgroup
}
\def\Chemabove{\begingroup\let\CF_temp\CF_gobarg\CF_chemabovea}
\def\chemabove{\begingroup\let\CF_temp\CF_id\CF_chemabovea}
\def\CF_chemabovea{\CF_testopt\CF_chemaboveb\CF_stacksep}
\def\CF_chemaboveb[#1]#2#3{%
\setbox\CF_box\hbox{\printatom{#2}}%
\expandafter\vbox\CF_temp{to\ht\CF_box}{%
\offinterlineskip
\CF_temp\vss
\hbox to\wd\CF_box{\hss\printatom{#3}\hss}%
\kern#1\relax
\hbox{\printatom{#2}}%
}%
\endgroup
}
\def\chemmove{\CF_testopt\CF_chemmove{}}
\def\CF_chemmove[#1]#2{%
\CF_doifnotempty{#2}%
{\expandafter\tikzpicture\expanded{[overlay,remember picture,-CF\CF_ifempty{#1}{}{,\unexpanded{#1}}]}%
#2%
\endtikzpicture
}%
}
\def\chemnameinit#1{%
\setbox\CF_boxstuff\hbox{#1}%
\xdef\CF_dpmax{\the\dp\CF_boxstuff}%
}
\let\CF_dpmax\CF_zero
\def\CF_parsemolname#1\\#2\_nil{%
\hbox to\CF_wdstuffbox{\hss#1\hss}%
\CF_doifnotempty{#2}{\CF_parsemolname#2\_nil}%
}
\def\chemname{%
\CF_ifstar
{\CF_adjustnamedpfalse\CF_chemnamea}
{\CF_adjustnamedptrue \CF_chemnamea}%
}
\def\CF_chemnamea{\CF_testopt\CF_chemnameb{1.5ex}}
\def\CF_chemnameb[#1]#2#3{%
\setbox\CF_boxstuff\hbox{#2}%
\edef\CF_wdstuffbox{\the\wd\CF_boxstuff}\edef\CF_dpstuffbox{\the\dp\CF_boxstuff}%
\leavevmode
\ifdim\CF_dpmax<\CF_dpstuffbox\global\let\CF_dpmax\CF_dpstuffbox\fi
\vtop{%
\box\CF_boxstuff
\nointerlineskip
\kern\dimexpr#1\ifCF_adjustnamedp+\CF_dpmax-\CF_dpstuffbox\fi\relax
\CF_parsemolname#3\\\_nil
}%
}
%
%
%
\let\CF_schemenest\CF_zero
\def\CF_subscheme{\CF_testopt\CF_subschemea{}}
\def\CF_subschemea[#1]{\CF_testopt{\CF_subschemeb[#1]}{text}}
\def\CF_subschemeb[#1][#2]#3{\schemestart[#1][#2]#3\schemestop}
\def\chemleft#1#2\chemright#3{%
\leavevmode
\begingroup
\setbox0\hbox{$\vcenter{\hbox{}}$}\edef\CF_delimmathht{\the\ht0}%
\setbox0\hbox{#2}\edef\CF_delimdim{\the\dimexpr(\ht0+\dp0)/2}%
\edef\CF_delimshift{\the\dimexpr(\ht0-\dp0)/2-\CF_delimmathht}%
\raise\CF_delimshift\hbox{$\left#1\vrule height\CF_delimdim depth\CF_delimdim width0pt\right.$}\box0
\raise\CF_delimshift\hbox{$\left.\vrule height\CF_delimdim depth\CF_delimdim width0pt\right#3$}%
\endgroup
}
\def\chemright#1{%
\CF_warning{"\string\chemright\string#1" ignored! No \string\chemleft\space previously found.}%
}
\def\chemup#1#2\chemdown#3{%
\begingroup
\setbox0\hbox{\printatom{#2}}\edef\CF_delimdim{\the\dimexpr\wd0/2}%
\tikzpicture[every node/.style={inner sep=0pt,outer sep=0pt,minimum size=0pt},baseline]%
\node[anchor=base west](chem@stuff){\box0};%
\node[at=(chem@stuff.north),anchor=east,rotate=-90]{$\left#1\vrule height\CF_delimdim depth\CF_delimdim width0pt\right.$};%
\node[at=(chem@stuff.south),anchor=west,rotate=-90]{$\left.\vrule height\CF_delimdim depth\CF_delimdim width0pt\right#3$};%
\endtikzpicture
\endgroup
}
\def\chemdown#1{%
\CF_warning{"\string\chemdown\string#1" ignored! No \string\chemup\space previously found.}%
}
\def\CF_setstyle#1,#2,#3\_nil#4#5#6{%
\def#4{#1}\let#5\empty\let#6\empty
\CF_iffirsttokmatch\CF_quark{#2\relax}
{}%
{\def#5{#2}%
\CF_iffirsttokmatch\CF_quark{#3\relax}
{}%
{\CF_setstylea#3\_nil#6}%
}%
}
\def\CF_setstylea#1,\CF_quark#2\_nil#3{\def#3{#1}}
\def\CF_and{\futurelet\CF_toksa\CF_anda}
\def\CF_anda{%
\CF_ifx\CF_toksa\bgroup
{\CF_andb}
{\CF_andb{}}%
}
\def\CF_andb#1{%
\CF_setstyle#1,\CF_quark,\CF_quark\_nil\CF_signspaceante_\CF_signspacepost_\CF_signvshift_
\CF_doifnotempty\CF_signspaceante_{\let\CF_signspaceante\CF_signspaceante_}%
\CF_doifnotempty\CF_signspacepost_{\let\CF_signspacepost\CF_signspacepost_}%
\CF_doifnotempty\CF_signvshift_{\let\CF_signvshift\CF_signvshift_}%
\raise\CF_signvshift\hbox{\kern\CF_signspaceante$+$\kern\CF_signspacepost}%
}
\def\schemestart{%
\begingroup
\xdef\CF_schemenest{\number\numexpr\CF_schemenest+1}%
\CF_testopt\CF_schemestarta{}%
}
\def\CF_schemestarta[#1]{%
\CF_setstyle#1,\CF_quark,\CF_quark\_nil\CF_arrowangle_\CF_arrowlength_\CF_arrowstyle_
\CF_doifnotempty\CF_arrowangle_{\let\CF_arrowangle\CF_arrowangle_}%
\CF_doifnotempty\CF_arrowlength_{\let\CF_arrowlength\CF_arrowlength_}%
\CF_eexpsecond{\def\CF_arrowtip}{\expandafter\CF_gobarg\CF_arrowhead}%
\CF_expsecond{\CF_preaddtomacro\CF_defaultarrowstyle}{\CF_arrowhead,}%
\let\CF_arrowstyle\CF_defaultarrowstyle
\CF_doifnotempty\CF_arrowstyle_{\CF_eaddtomacro\CF_arrowstyle{\expandafter,\CF_arrowstyle_}}%
\pgfmathsetmacro\CF_arrowdoublesep{\CF_arrowdoublesep/2}%
\pgfmathsetmacro\CF_arrowdoubleposstart{(1-\CF_arrowdoubleposstart)/2}%
\pgfmathsetmacro\CF_arrowdoubleposend{1-\CF_arrowdoubleposstart}%
\ifboolKV[chemfig]{scheme debug}
{\tikzpicture[every node/.style={draw,anchor=base,inner sep=0pt,outer sep=0pt,minimum size=1.5pt},baseline,remember picture]}
{\tikzpicture[every node/.style={anchor=base,inner sep=0pt,outer sep=0pt,minimum size=0pt},baseline,remember picture]}%
\let\merge\CF_merge
\expandafter\let\csname+\endcsname\CF_and
\let\arrow\CF_arrow
\let\schemestop\CF_schemestop
\let\subscheme\CF_subscheme
\CF_testopt{\CF_schemestartb}{text}%
}
\def\CF_schemestartb[#1]{%
\ifnum\CF_schemenest=1 %
\CF_cntcompound0
\fi
\edef\CF_currentnodename{c\number\CF_cntcompound}%
\let\CF_nextnodename\empty
\let\CF_nextnodestyle\empty
\let\CF_directarrowlist\empty
\ifboolKV[chemfig]{scheme debug}
{\node[fill,green](\CF_currentnodename){};}
{\node(\CF_currentnodename){};}%
\def\CF_nextnodeanchor{#1}%
\CF_doifempty\CF_nextnodeanchor{\def\CF_nextnodeanchor{text}}%
\let\CF_compound\empty
\CF_schemestartc
}
\def\CF_schemestartc{%
\futurelet\CF_toksa\CF_schemestarte
}
\expandafter\def\expandafter\CF_schemestartd\space{\futurelet\CF_toksa\CF_schemestarte}
\def\CF_schemestarte{%
\CF_iffirsttokina{\arrow\schemestop\merge}%
{}
{\CF_ifx\CF_toksa\bgroup
{\ifCF_compound_is_chemfig%
\edef\CF_restore_hashcatcode{\catcode\number`\#=\number\catcode`\# \relax}%
\catcode`\#12 %
\fi
\CF_addnextarg
}
{\CF_ifx\CF_toksa\CF_sptoken
{\CF_addtomacro\CF_compound{ }%
\CF_schemestartd
}
{\CF_ifx\CF_toksa\chemfig
\CF_compound_is_chemfigtrue%
{}%
\afterassignment\CF_schemestartc
\CF_addtomacro\CF_compound
}%
}%
}%
}
\def\CF_addnextarg#1{%
\CF_addtomacro\CF_compound{{#1}}%
\ifCF_compound_is_chemfig%
\CF_restore_hashcatcode
\CF_compound_is_chemfigfalse%
\fi
\CF_schemestartc
}
\def\CF_displaycompound#1#2{%
\CF_doifnotempty\CF_compound
{\global\advance\CF_cntcompound1
\CF_ifx\CF_defaultcompoundstyle\empty
{\let\CF_currentnodestyle\empty}
{\CF_expsecond{\def\CF_currentnodestyle}{\CF_defaultcompoundstyle,}}%
\CF_addtomacro\CF_currentnodestyle{anchor=\CF_nextnodeanchor,at=(\CF_currentnodename)}%
\CF_ifempty{#2}%
{\CF_doifnotempty\CF_nextnodestyle
{\CF_eaddtomacro\CF_currentnodestyle{\expandafter,\CF_nextnodestyle}}%
}
{\CF_doifnotempty\CF_nextnodestyle
{\CF_warning{two styles for the same node, first style "\CF_nextnodestyle" ignored}%
}%
\CF_addtomacro\CF_currentnodestyle{,#2}%
}%
\CF_ifempty{#1}
{\edef\CF_temp{%
\CF_ifempty\CF_nextnodename
{c\number\CF_cntcompound}
{\CF_nextnodename}%
}%
}
{\CF_doifnotempty\CF_nextnodename
{\CF_warning{two names for the same node, first name "\CF_nextnodename" ignored}%
}%
\edef\CF_temp{#1}%
}%
\CF_expafter{\node[}\CF_currentnodestyle](\CF_temp){\CF_compound};%
\ifboolKV[chemfig]{scheme debug}%
{\node[draw=none,anchor=270,at=(\CF_temp.90),fill=green!60,overlay,opacity=0.5]{\scriptsize\bfseries\CF_temp};%
}
{}%
\let\CF_currentnodename\CF_temp
}%
}
\def\CF_schemestop{%
\CF_displaycompound{}{}%
\CF_directarrowlist
\endtikzpicture
\xdef\CF_schemenest{\number\numexpr\CF_schemenest-1}%
\endgroup
}
\def\CF_analysearrowarg#1{\CF_analysearrowarga#1[]\_nil}
\def\CF_analysearrowarga#1[#2]#3\_nil{%
\CF_ifinstr{#1}.
{\CF_addtomacro\CF_temp{#1[#2]}}
{\CF_addtomacro\CF_temp{#1.[#2]}}%
}
\def\CF_arrow{%
\CF_ifnextchar(%
{\CF_arrowa
}
{\CF_ifnextchar\bgroup
{\CF_arrowb(.[]--.[])}
{\CF_arrowb(.[]--.[]){}}%
}%
}
\def\CF_arrowa(#1--#2){%
\def\CF_temp{(}%
\CF_analysearrowarg{#1}%
\CF_addtomacro\CF_temp{--}%
\CF_analysearrowarg{#2}%
\CF_addtomacro\CF_temp)%
\CF_ifnextchar\bgroup
{\expandafter\CF_arrowb\CF_temp}
{\expandafter\CF_arrowb\CF_temp{}}%
}
\def\CF_arrowb(#1.#2[#3]--#4.#5[#6])#7{%
\def\CF_currentarrowtype{#7}%
\CF_doifempty\CF_currentarrowtype{\def\CF_currentarrowtype{->}}%
\CF_testopt{\CF_arrowc(#1.#2[#3]--#4.#5[#6])}{}%
}
\def\CF_arrowc(#1.#2[#3]--#4.#5[#6])[#7]{%
\def\CF_temp{\CF_arrowe(#1.#2[#3]--#4.#5[#6])}%
\CF_arrowd#7,\empty,\empty\_nil
}
\def\CF_arrowd#1,#2,#3\_nil{%
\CF_addtomacro\CF_temp{{#1}}%
\CF_eaddtomacro\CF_temp{\expandafter{#2}}%
\expandafter\CF_eaddtomacro\expandafter\CF_temp\expandafter{\expandafter\expandafter\expandafter{\expandafter\CF_sanitizelastitem#3,\empty\_nil}}%
\CF_temp
}
%
%
\def\CF_arrowe(#1.#2[#3]--#4.#5[#6])#7#8#9{%
\let\CF_arrowcurrentstyle\CF_arrowstyle
\if @\expandafter\CF_firsttonil\detokenize{#1.}\_nil%
\if @\expandafter\CF_firsttonil\detokenize{#4.}\_nil
\CF_eaddtomacro\CF_directarrowlist{\expandafter\CF_directarrow\expandafter{\CF_currentarrowtype}{#1}{#2}{#4}{#5}{#9}}%
\let\CF_nextaction\CF_schemestartc
\else
\CF_doifnotempty\CF_arrowcurrentstyle{\CF_addtomacro\CF_arrowcurrentstyle,}%
\CF_doifnotempty{#9}{\CF_addtomacro\CF_arrowcurrentstyle{#9,}}%
\CF_displaycompound{}{#3}%
\def\CF_nextnodename{#4}%
\CF_expsecond{\def\CF_currentnodename}{\CF_gobarg#1}%
\let\CF_arrowstartname\CF_currentnodename
\let\CF_arrowendname\CF_nextnodename
\CF_arrowf{#7}{#8}{#2}{#5}%
\def\CF_nextnodestyle{#6}%
\fi
\else
\CF_doifnotempty\CF_arrowcurrentstyle{\CF_addtomacro\CF_arrowcurrentstyle,}%
\CF_doifnotempty{#9}{\CF_addtomacro\CF_arrowcurrentstyle{#9,}}%
\if @\expandafter\CF_firsttonil\detokenize{#2.}\_nil
\CF_error{syntax "(<name>--@<name>)" is not allowed}%
\else
\CF_displaycompound{#1}{#3}%
\edef\CF_arrowstartname{%
\CF_ifempty{#1}
\CF_currentnodename
{#1}%
\CF_doifnotempty{#2}{.#2}%
}%
\CF_arrowf{#7}{#8}{#2}{#5}%
\def\CF_nextnodename{#4}%
\def\CF_nextnodestyle{#6}%
\fi
\fi
\CF_arrowgobspaces%
}
\def\CF_arrowgobspaces{\futurelet\CF_toksa\CF_arrowgobspacesa}
\def\CF_arrowgobspacesa{%
\CF_ifx\CF_sptoken\CF_toksa
\CF_arrowgobspacesb
\CF_nextaction
}
\expandafter\def\expandafter\CF_arrowgobspacesb\space{\futurelet\CF_toksa\CF_arrowgobspacesa}
\def\CF_arrowf#1#2#3#4{%
\def\CF_nextaction{\let\CF_compound\empty\CF_schemestartc}%
\def\CF_arrowcurrentangle{#1}\CF_doifempty\CF_arrowcurrentangle{\let\CF_arrowcurrentangle\CF_arrowangle}%
\def\CF_currentarrowlength{#2}\CF_doifempty\CF_currentarrowlength{\let\CF_currentarrowlength\CF_arrowlength}%
\node[at=(\CF_currentnodename.\CF_ifempty{#3}\CF_arrowcurrentangle{#3}),shift=(\CF_arrowcurrentangle:\CF_currentarrowlength*\CF_compoundsep),cyan,fill](end@arrow@i@\number\CF_schemenest){};%
\edef\CF_arrowendname{end@arrow@i@\number\CF_schemenest\CF_doifnotempty{#4}{.#4}}%
\ifboolKV[chemfig]{scheme debug}
{\node[at=(\CF_currentnodename.\CF_ifempty{#3}\CF_arrowcurrentangle{#3}),shift=(\CF_arrowcurrentangle:\CF_arrowoffset),red,fill](start@arrow){};%
\node[at=(\CF_currentnodename.\CF_ifempty{#3}\CF_arrowcurrentangle{#3}),shift=(\CF_arrowcurrentangle:\CF_currentarrowlength*\CF_compoundsep-\CF_arrowoffset),red,fill](end@arrow){};%
}
{\node[at=(\CF_currentnodename.\CF_ifempty{#3}\CF_arrowcurrentangle{#3}),shift=(\CF_arrowcurrentangle:\CF_arrowoffset)](start@arrow){};%
\node[at=(\CF_currentnodename.\CF_ifempty{#3}\CF_arrowcurrentangle{#3}),shift=(\CF_arrowcurrentangle:\CF_currentarrowlength*\CF_compoundsep-\CF_arrowoffset)](end@arrow){};%
}%
\def\CF_arrowstartnode{start@arrow}\def\CF_arrowendnode{end@arrow}%
\csname\expandafter\CF_grabarrowname\CF_currentarrowtype[\_nil\CF_threeea\endcsname
\expandafter\CF_grabarrowargs\CF_currentarrowtype[]\_nil[][][][][][][][]\_nil
\def\CF_currentnodename{end@arrow@i@\number\CF_schemenest}%
\edef\CF_nextnodeanchor{\CF_ifempty{#4}{180+\CF_arrowcurrentangle}{#4}}%
}
%
%
\def\CF_directarrow#1#2#3#4#5#6{%
\CF_expsecond{\def\CF_arrowstartname}{\CF_gobarg#2}%
\CF_expsecond{\def\CF_arrowendname}{\CF_gobarg#4}%
\path[sloped,allow upside down](\CF_gobarg#2\ifx\empty#3\empty\else.#3\fi)--(\CF_gobarg#4\ifx\empty#5\empty\else.#5\fi)%
coordinate[pos=0,xshift=\CF_arrowoffset](start@direct@arrow)%
coordinate[pos=1,xshift=-\CF_arrowoffset](end@direct@arrow);%
\def\CF_arrowstartnode{start@direct@arrow}%
\def\CF_arrowendnode{end@direct@arrow}%
\pgfmathanglebetweenpoints
{\pgfpointanchor{\CF_gobarg#2}{\ifx\empty#3\empty center\else#3\fi}}%
{\pgfpointanchor{\CF_gobarg#4}{\ifx\empty#5\empty center\else#5\fi}}%
\let\CF_arrowcurrentangle\pgfmathresult
\CF_doifnotempty{#6}{\CF_addtomacro\CF_arrowcurrentstyle{#6,}}%
\csname\CF_grabarrowname#1[]\_nil\expandafter\endcsname\CF_grabarrowargs#1[]\_nil[][][][][][][][]\_nil
}
\def\CF_mergegrabchardir#1[#2][#3]#4\_nil{%
\CF_expafter{\futurelet\CF_toksa\CF_gobtonil}{\CF_firsttonil#1>\_nil}\_nil
\ifx>\CF_toksa
\def\CF_mergeangle{0}\def\CF_mergeextreme{xmax}\def\CF_mergesign{+}%
\else
\ifx<\CF_toksa
\def\CF_mergeangle{180}\def\CF_mergeextreme{xmin}\def\CF_mergesign{-}%
\else
\ifx^\CF_toksa
\def\CF_mergeangle{90}\def\CF_mergeextreme{ymax}\def\CF_mergesign{+}%
\else
\ifx v\CF_toksa
\def\CF_mergeangle{-90}\def\CF_mergeextreme{ymin}\def\CF_mergesign{-}%
\fi\fi\fi\fi
\def\CF_mergelabelup{#2}\def\CF_mergelabeldo{#3}%
}
\def\CF_merge#1({%
\CF_mergegrabchardir#1[][]\_nil
\CF_mergea(%
}
\def\CF_mergea#1--(#2){\CF_testopt{\CF_mergeb#1--(#2)}{}}
\def\CF_mergeb#1--(#2)[#3]{%
\CF_displaycompound{}{}%
\CF_parsemergeopt#3,\CF_quark,\CF_quark,\CF_quark\_nil
\def\CF_mergexmax{-16383.99999pt}\let\CF_mergeymax\CF_mergexmax
\def\CF_mergexmin{16383.99999pt}\let\CF_mergeymin\CF_mergexmin
\CF_mergeparsenodelist#1(\relax)%
\pgfmathsetmacro\CF_mergeextremeresult{\csname CF_merge\CF_mergeextreme\endcsname\CF_mergesign\CF_mergefromcoeff*\CF_compoundsep}%
\CF_mergec#1(\relax)%
\CF_expsecond{\def\CF_temp}{\expandafter[\CF_mergestyle,shorten <=0,shorten >=0,-]}%
\if x\expandafter\CF_firsttonil\CF_mergeextreme\_nil
\CF_addtomacro\CF_temp{(\CF_mergeextremeresult pt,\CF_mergeymax)--(\CF_mergeextremeresult pt,\CF_mergeymin)}%
\else
\CF_addtomacro\CF_temp{(\CF_mergexmin,\CF_mergeextremeresult pt)--(\CF_mergexmax,\CF_mergeextremeresult pt)}%
\fi
\expandafter\draw\CF_temp node[pos=\CF_mergesplitcoeff](merge@point){}%
node[at=(merge@point),shift=(\CF_mergeangle:\CF_compoundsep*\CF_mergetocoeff-\CF_arrowoffset)](end@merge){}%
node[at=(merge@point),shift=(\CF_mergeangle:\CF_compoundsep*\CF_mergetocoeff)](end@merge@i){};%
\let\CF_arrowcurrentangle\CF_mergeangle
\CF_expafter{\draw[}\CF_mergestyle,shorten <=0](merge@point)--(end@merge)%
\expandafter\CF_arrowdisplaylabela\expandafter{\CF_mergelabelup}{.5}+\expandafter\CF_arrowdisplaylabela\expandafter{\CF_mergelabeldo}{.5}-;%
\def\CF_currentnodename{end@merge@i}%
\let\CF_temp\empty
\CF_analysearrowarg{#2}%
\expandafter\CF_merged\CF_temp\_nil
}
\def\CF_mergec(#1){%
\if\relax\expandafter\noexpand\CF_firsttonil#1\_nil
\else
\CF_ifdot{#1}%
{\edef\merge_currentnodename{\CF_beforedot#1\_nil}%
\edef\merge_currentanchor{\CF_afterdot#1\_nil}%
}%
{\def\merge_currentnodename{#1}%
\let\merge_currentanchor\CF_mergeangle
}%
\if x\expandafter\CF_firsttonil\CF_mergeextreme\_nil
\pgfextracty\CF_dim{\pgfpointanchor\merge_currentnodename\merge_currentanchor}%
\CF_expafter{\draw[}\CF_mergestyle,shorten >=0,-]([shift=(\CF_mergeangle:\CF_arrowoffset)]\merge_currentnodename.\merge_currentanchor)--(\CF_mergeextremeresult pt,\CF_dim);%
\else
\pgfextractx\CF_dim{\pgfpointanchor\merge_currentnodename\merge_currentanchor}%
\CF_expafter{\draw[}\CF_mergestyle,shorten >=0,-]([shift=(\CF_mergeangle:\CF_arrowoffset)]\merge_currentnodename.\merge_currentanchor)--(\CF_dim,\CF_mergeextremeresult pt);%
\fi
\expandafter\CF_mergec
\fi
}
\def\CF_merged#1.#2[#3]\_nil{%
\def\CF_nextnodename{#1}%
\edef\CF_nextnodeanchor{%
\CF_ifempty{#2}
{180+\CF_mergeangle}
{#2}%
}%
\def\CF_nextnodestyle{#3}%
\let\CF_compound\empty
\CF_schemestartc
}
\def\CF_parsemergeopt#1,#2,#3,#4\_nil{%
\CF_ifempty{#1}
{\def\CF_mergefromcoeff{0.5}}
{\def\CF_mergefromcoeff{#1}}%
\def\CF_mergetocoeff{0.5}%
\def\CF_mergesplitcoeff{0.5}%
\CF_expsecond{\def\CF_mergestyle}{\CF_arrowhead}%
\CF_iffirsttokmatch\CF_quark{#2\relax}
{}
{\CF_ifempty{#2}
{\def\CF_mergetocoeff{0.5}}
{\def\CF_mergetocoeff{#2}}%
\CF_iffirsttokmatch\CF_quark{#3\relax}
{}
{\CF_ifempty{#3}
{\def\CF_mergesplitcoeff{0.5}}
{\def\CF_mergesplitcoeff{#3}}%
\CF_iffirsttokmatch\CF_quark{#4\relax}
{}
{\CF_parsemergeopta#4\_nil}%
}%
}%
}
\def\CF_parsemergeopta#1,\CF_quark#2\_nil{%
\CF_ifempty{#1}
{}
{\CF_addtomacro\CF_mergestyle{,#1}}%
}
\def\CF_mergeparsenodelist(#1){%
\if\relax\expandafter\noexpand\CF_firsttonil#1\_nil
\else
\CF_ifdot{#1}%
{\edef\merge_currentnodename{\CF_beforedot#1\_nil}\edef\merge_currentanchor{\CF_afterdot#1\_nil}}%
{\def\merge_currentnodename{#1}\let\merge_currentanchor\CF_mergeangle}%
\pgfextractx\CF_dim{\pgfpointanchor\merge_currentnodename\merge_currentanchor}%
\ifdim\CF_dim>\CF_mergexmax
\edef\CF_mergexmax{\the\CF_dim}%
\fi
\ifdim\CF_dim<\CF_mergexmin
\edef\CF_mergexmin{\the\CF_dim}%
\fi
\pgfextracty\CF_dim{\pgfpointanchor\merge_currentnodename\merge_currentanchor}%
\ifdim\CF_dim>\CF_mergeymax
\edef\CF_mergeymax{\the\CF_dim}%
\fi
\ifdim\CF_dim<\CF_mergeymin
\edef\CF_mergeymin{\the\CF_dim}%
\fi
\expandafter\CF_mergeparsenodelist
\fi
}
\def\CF_grabarrowname#1[#2\_nil{\detokenize{CF_arrow(#1)}}
\def\CF_grabarrowargs#1[#2\_nil{[#2}
\def\CF_makeparametertext#1{%
\toks0{}%
\CF_cntgroup#1\relax
\CF_makeparametertexta1%
}
\def\CF_makeparametertexta#1{%
\unless\ifnum#1>\CF_cntgroup
\toks0\expandafter{\the\toks0[###1]}%
\expandafter\CF_makeparametertexta\expandafter{\number\numexpr#1+1\expandafter}%
\fi
}
%
\def\definearrow#1#2#3{%
\begingroup
\CF_makeparametertext{#1}%
\expandafter\endgroup
\expandafter\def\csname\detokenize{CF_arrow(#2)}\expandafter\endcsname\the\toks0{#3\CF_gobtonil}%
}
\def\CF_ifdot#1{\CF_ifdota#1.\_nil}
\def\CF_ifdota#1.#2\_nil{\ifx\empty#2\empty\expandafter\CF_execsecond\else\expandafter\CF_execfirst\fi}
\def\CF_beforedot#1.#2\_nil{#1}
\def\CF_afterdot#1.#2\_nil{#2}
\def\CF_rotatenode*#1#2\_nil{%
\CF_ifdot{#1}
{\CF_beforedot#1\_nil}
{#1}%
}
\def\CF_anchornode*#1#2\_nil#3{%
\CF_ifdot{#1}
{\CF_afterdot#1\_nil}
{\CF_arrowcurrentangle-#390-#1}%
}
%
%
\def\CF_arrowdisplaylabel#1#2#3#4#5#6#7#8{%
\CF_doifnotempty{#1#5}
{\path(#4)--(#8)\CF_arrowdisplaylabela{#1}{#2}{#3}\CF_arrowdisplaylabela{#5}{#6}{#7};}%
}
\def\CF_arrowdisplaylabela#1#2#3{%
\CF_doifnotempty{#1}
{\if*\expandafter\CF_firsttonil\detokenize{#1}\_nil
\ifboolKV[chemfig]{scheme debug}
{node[pos=#2,sloped,yshift=#3\CF_arrowlabelsep,draw,fill,cyan](shifted@node){}%
node[draw,rotate=\CF_rotatenode#1\_nil,anchor=\CF_anchornode#1\_nil#3,at=(shifted@node)]{\expandafter\CF_gobarg\CF_gobarg#1}%
}
{node[pos=#2,sloped,yshift=#3\CF_arrowlabelsep](shifted@node){}%
node[rotate=\CF_rotatenode#1\_nil,anchor=\CF_anchornode#1\_nil#3,at=(shifted@node)]{\expandafter\CF_gobarg\CF_gobarg#1}%
}%
\else
\ifboolKV[chemfig]{scheme debug}
{node[pos=#2,sloped,yshift=#3\CF_arrowlabelsep,draw,fill,cyan](shifted@node){}%
node[draw,pos=#2,anchor=-#390,sloped,yshift=#3\CF_arrowlabelsep]{#1}%
}
{node[pos=#2,anchor=-#390,sloped,yshift=#3\CF_arrowlabelsep]{#1}%
}
\fi
}%
}
%
\def\CF_arrowshiftnodes#1{%
\unless\ifdim\CF_ifempty{#1}\CF_zero{#1}=0pt
\expanded{%
\noexpand\path(\CF_arrowstartnode)--(\CF_arrowendnode)%
node[pos=0,sloped,yshift=#1](\CF_arrowstartnode1){}node[pos=1,sloped,yshift=#1](\CF_arrowendnode1){};}%
\edef\CF_arrowstartnode{\CF_arrowstartnode1}\edef\CF_arrowendnode{\CF_arrowendnode1}%
\fi
}
\definearrow3{->}{%
\CF_arrowshiftnodes{#3}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode)--(\CF_arrowendnode);%
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode
}
\definearrow3{<-}{%
\CF_arrowshiftnodes{#3}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowendnode)--(\CF_arrowstartnode);%
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode
}
\definearrow5{-/>}{%
\CF_arrowshiftnodes{#3}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode)--(\CF_arrowendnode)%
coordinate[midway,shift=(\CF_arrowcurrentangle:-1pt)](midway@i)%
coordinate[midway,shift=(\CF_arrowcurrentangle:1pt)](midway@ii)%
coordinate[at=(midway@i),shift=(\CF_ifempty{#4}{225}{#4+180}+\CF_arrowcurrentangle:\CF_ifempty{#5}{5pt}{#5})](line@start)%
coordinate[at=(midway@i),shift=(\CF_ifempty{#4}{45}{#4}+\CF_arrowcurrentangle:\CF_ifempty{#5}{5pt}{#5})](line@end)%
coordinate[at=(midway@ii),shift=(\CF_ifempty{#4}{225}{#4+180}+\CF_arrowcurrentangle:\CF_ifempty{#5}{5pt}{#5})](line@start@i)%
coordinate[at=(midway@ii),shift=(\CF_ifempty{#4}{45}{#4}+\CF_arrowcurrentangle:\CF_ifempty{#5}{5pt}{#5})](line@end@i);
\draw(line@start)--(line@end);%
\draw(line@start@i)--(line@end@i);%
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode
}
\definearrow3{<->}{%
\CF_arrowshiftnodes{#3}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle,\CF_arrowtip-\CF_arrowtip](\CF_arrowstartnode)--(\CF_arrowendnode);%
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode
}
\definearrow3{<=>}{%
\CF_arrowshiftnodes{#3}%
\path[allow upside down](\CF_arrowstartnode)--(\CF_arrowendnode)%
node[pos=0,sloped,yshift=\CF_arrowdoublesep](\CF_arrowstartnode @u0){}%
node[pos=0,sloped,yshift=-\CF_arrowdoublesep](\CF_arrowstartnode @d0){}%
node[pos=1,sloped,yshift=\CF_arrowdoublesep](\CF_arrowstartnode @u1){}%
node[pos=1,sloped,yshift=-\CF_arrowdoublesep](\CF_arrowstartnode @d1){};%
\begingroup
\ifboolKV[chemfig]{arrow double harpoon}
{\pgfarrowharpoontrue}
{}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode @u0)--(\CF_arrowstartnode @u1);%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode @d1)--(\CF_arrowstartnode @d0);%
\endgroup
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode%
}
\definearrow3{<->>}{%
\CF_arrowshiftnodes{#3}%
\path[allow upside down](\CF_arrowstartnode)--(\CF_arrowendnode)%
node[pos=0,sloped,yshift=1pt](\CF_arrowstartnode @u0){}%
node[pos=\CF_arrowdoubleposstart,sloped,yshift=-1pt](\CF_arrowstartnode @d0){}%
node[pos=1,sloped,yshift=1pt](\CF_arrowstartnode @u1){}%
node[pos=\CF_arrowdoubleposend,sloped,yshift=-1pt](\CF_arrowstartnode @d1){};%
\begingroup
\ifboolKV[chemfig]{arrow double harpoon}
{\pgfarrowharpoontrue}
{}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode @u0)--(\CF_arrowstartnode @u1);%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode @d1)--(\CF_arrowstartnode @d0);%
\endgroup
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode%
}
\definearrow3{<<->}{%
\path[allow upside down](\CF_arrowstartnode)--(\CF_arrowendnode)%
node[pos=\CF_arrowdoubleposstart,sloped,yshift=1pt](\CF_arrowstartnode @u0){}%
node[pos=0,sloped,yshift=-1pt](\CF_arrowstartnode @d0){}%
node[pos=\CF_arrowdoubleposend,sloped,yshift=1pt](\CF_arrowstartnode @u1){}%
node[pos=1,sloped,yshift=-1pt](\CF_arrowstartnode @d1){};%
\begingroup
\ifboolKV[chemfig]{arrow double harpoon}
{\pgfarrowharpoontrue}
{}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode @u0)--(\CF_arrowstartnode @u1);%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode @d1)--(\CF_arrowstartnode @d0);%
\endgroup
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode
}
\definearrow30{%
\CF_arrowshiftnodes{#3}%
\CF_arrowdisplaylabel{#1}{0.5}+\CF_arrowstartnode{#2}{0.5}-\CF_arrowendnode
}
\definearrow5{-U>}{%
\CF_arrowshiftnodes{#3}%
\CF_expafter{\draw[}\CF_arrowcurrentstyle](\CF_arrowstartnode)--(\CF_arrowendnode)node[midway](Uarrow@arctangent){};%
\CF_ifempty{#4}
{\def\CF_Uarrowradius{0.333}}
{\def\CF_Uarrowradius{#4}}%
\CF_ifempty{#5}%
{\def\CF_Uarrowabsangle{60}}
{\pgfmathsetmacro\CF_Uarrowabsangle{abs(#5)}}%
\expandafter\draw\expanded{[\CF_ifempty{#1}{draw=none}{\unexpanded\expandafter{\CF_arrowcurrentstyle}},-]}(Uarrow@arctangent)%
arc[radius=\CF_compoundsep*\CF_currentarrowlength*\CF_Uarrowradius,start angle=\CF_arrowcurrentangle-90,delta angle=-\CF_Uarrowabsangle]node(Uarrow@start){};
\expandafter\draw\expanded{[\CF_ifempty{#2}{draw=none}{\unexpanded\expandafter{\CF_arrowcurrentstyle}}]}(Uarrow@arctangent)%
arc[radius=\CF_compoundsep*\CF_currentarrowlength*\CF_Uarrowradius,start angle=\CF_arrowcurrentangle-90,delta angle=\CF_Uarrowabsangle]node(Uarrow@end){};
\pgfmathsetmacro\CF_temp{\CF_Uarrowradius*cos(\CF_arrowcurrentangle)<0?"-":"+"}%
\ifdim\CF_Uarrowradius pt>0pt
\CF_arrowdisplaylabel{#1}{0}\CF_temp{Uarrow@start}{#2}{1}\CF_temp{Uarrow@end}%
\else
\CF_arrowdisplaylabel{#2}{0}\CF_temp{Uarrow@start}{#1}{1}\CF_temp{Uarrow@end}%
\fi
}
\def\CF_grabdelim#1#2#3\_CFnil{\def\CF_leftdelim{#1}\def\CF_rightdelim{#2}}
\defKV[CFdelimiters]{%
delimiters = \CF_grabdelim#1()\_CFnil,
height = \def\CF_delimheight{#1},
depth = \CF_expsecond{\CF_defifempty\CF_delimdepth{#1}}{\CF_delimheight},
open xshift = \edef\CF_leftdelimxshift{\the\dimexpr#1},
close xshift = \edef\CF_rightdelimxshift{\CF_ifempty{#1}{-\CF_leftdelimxshift}{-\the\dimexpr#1}}
}
\setKVdefault[CFdelimiters]{%
delimiters = (),
height = 10pt,
depth = ,
open xshift = 0pt,
close xshift = ,
h align = true,
auto rotate = false,
rotate = 0,
indice = n
}%
\def\polymerdelim{\CF_ifnextchar[{\CF_polymerdelima}{\CF_polymerdelima[]}}
\def\CF_polymerdelima[#1]#2#3{%
\restoreKV[CFdelimiters]%
\CF_doifnotempty{#1}{\setKV[CFdelimiters]{#1}}%
\edef\CF_delimhalfdim{\the\dimexpr(\CF_delimheight+\CF_delimdepth)/2}%
\edef\CF_delimvshift {\the\dimexpr(\CF_delimheight-\CF_delimdepth)/2}%
\chemmove{%
\nulldelimiterspace0pt
\pgfextractx\CF_dim{\pgfpointanchor{#2}{center}}\edef\CF_leftdelimx{\the\CF_dim}%
\pgfextracty\CF_dim{\pgfpointanchor{#2}{center}}\edef\CF_leftdelimy{\the\CF_dim}%
\pgfextractx\CF_dim{\pgfpointanchor{#3}{center}}\edef\CF_rightdelimx{\the\CF_dim}%
\pgfextracty\CF_dim{\pgfpointanchor{#3}{center}}\edef\CF_rightdelimy{\the\CF_dim}%
\def\CF_autorotate{0}%
\ifboolKV[CFdelimiters]{h align}
{\let\CF_rightdelimy\CF_leftdelimy
}
{%
\ifboolKV[CFdelimiters]{auto rotate}
{\pgfmathatantwo{\CF_rightdelimy-\CF_leftdelimy}{\CF_rightdelimx-\CF_leftdelimx}%
\let\CF_autorotate\pgfmathresult
}
{\CF_eexpsecond\CF_ifempty{\useKV[CFdelimiters]{rotate}}
{}
{\edef\CF_autorotate{\useKV[CFdelimiters]{rotate}}}%
}%
}%
\node[at={(\CF_leftdelimx+\CF_leftdelimxshift,\CF_leftdelimy+\CF_delimvshift)},rotate=\CF_autorotate]
{$\left\CF_leftdelim\vrule height\CF_delimhalfdim depth\CF_delimhalfdim width0pt\right.$};%
\node[at={(\CF_rightdelimx+\CF_rightdelimxshift,\CF_rightdelimy+\CF_delimvshift)},rotate=\CF_autorotate]
{$\left.\vrule height\CF_delimhalfdim depth\CF_delimhalfdim width0pt\right\CF_rightdelim
\CF_eexpsecond\CF_doifnotempty{\useKV[CFdelimiters]{indice}}
{\CF_underscore{\rlap{$\scriptstyle\useKV[CFdelimiters]{indice}$}}}
$};
}%
}
\catcode`\@11
\pgfdeclarearrow{%
name = CF,%
defaults = {%
length = 3pt 5 1,%
width' = 0pt .8,%
inset' = 0pt .5,%
line width = 0pt 1 1,%
round%
},%
setup code = {%
%
\pgf@x\pgfarrowlength
\advance\pgf@x by-\pgfarrowinset
\pgf@x.25\pgf@x
\ifdim\pgf@x<\pgfarrowlinewidth\pgfarrowlinewidth\pgf@x\fi
%
\pgfmathdivide@{\pgf@sys@tonumber\pgfarrowlength}{\pgf@sys@tonumber\pgfarrowwidth}%
\let\pgf@temp@quot\pgfmathresult%
\pgf@x\pgfmathresult pt%
\pgf@x\pgfmathresult\pgf@x%
\pgf@x4\pgf@x%
\advance\pgf@x by1pt%
\pgfmathsqrt@{\pgf@sys@tonumber\pgf@x}%
\pgf@xc\pgfmathresult\pgfarrowlinewidth%
\pgf@xc.5\pgf@xc
\pgf@xa\pgf@temp@quot\pgfarrowlinewidth%
%
\pgf@ya.5\pgfarrowwidth%
\csname pgfmathatan2@\endcsname{\pgfmath@tonumber\pgfarrowlength}{\pgfmath@tonumber\pgf@ya}%
\pgf@yb\pgfmathresult pt%
\csname pgfmathatan2@\endcsname{\pgfmath@tonumber\pgfarrowinset}{\pgfmath@tonumber\pgf@ya}%
\pgf@ya\pgfmathresult pt%
\advance\pgf@yb by-\pgf@ya%
\pgf@yb.5\pgf@yb%
\pgfmathtan@{\pgf@sys@tonumber\pgf@yb}%
\pgfmathreciprocal@{\pgfmathresult}%
\pgf@yc\pgfmathresult\pgfarrowlinewidth%
\pgf@yc.5\pgf@yc%
\advance\pgf@ya by\pgf@yb%
\pgfmathsincos@{\pgf@sys@tonumber\pgf@ya}%
\pgf@ya\pgfmathresulty\pgf@yc%
\pgf@yb\pgfmathresultx\pgf@yc%
\ifdim\pgfarrowinset=0pt
\pgf@ya.5\pgfarrowlinewidth%
\fi
%
\pgfmathdivide@{\pgf@sys@tonumber\pgfarrowinset}{\pgf@sys@tonumber\pgfarrowwidth}%
\let\pgf@temp@quot\pgfmathresult%
\pgf@x\pgfmathresult pt%
\pgf@x\pgfmathresult\pgf@x%
\pgf@x4\pgf@x%
\advance\pgf@x by1pt%
\pgfmathsqrt@{\pgf@sys@tonumber\pgf@x}%
\pgf@yc\pgfmathresult\pgfarrowlinewidth%
\pgf@yc.5\pgf@yc%
%
\pgfutil@tempdima\pgfarrowlength%
\advance\pgfutil@tempdima by-\pgf@xc%
\advance\pgfutil@tempdima by-\pgf@ya%
\pgfutil@tempdimb.5\pgfarrowwidth%
\advance\pgfutil@tempdimb by-\pgf@yb%
%
\ifpgfarrowroundjoin
\pgfarrowssetbackend{\pgf@ya\advance\pgf@x by-.5\pgfarrowlinewidth}%
\else
\pgfarrowssetbackend{0pt}
\fi
\ifpgfarrowharpoon
\pgfarrowssetlineend{\pgfarrowinset\advance\pgf@x by\pgf@yc\advance\pgf@x by.5\pgfarrowlinewidth}%
\else
\pgfarrowssetlineend{\pgfarrowinset\advance\pgf@x by\pgf@yc\advance\pgf@x by-.25\pgfarrowlinewidth}%
\ifpgfarrowreversed
\ifdim\pgfinnerlinewidth>0pt
\pgfarrowssetlineend{\pgfarrowinset}%
\else
\pgfarrowssetlineend{\pgfutil@tempdima\advance\pgf@x by\pgf@ya\advance\pgf@x by-.25\pgfarrowlinewidth}%
\fi
\fi
\fi
\ifpgfarrowroundjoin
\pgfarrowssettipend{\pgfutil@tempdima\advance\pgf@x by\pgf@ya\advance\pgf@x by.5\pgfarrowlinewidth}%
\else
\pgfarrowssettipend{\pgfarrowlength\ifpgfarrowharpoon\advance\pgf@x by\pgf@xa\fi}%
\fi
%
\pgfarrowshullpoint{\pgfarrowlength\ifpgfarrowroundjoin\else\ifpgfarrowharpoon\advance\pgf@x by\pgf@xa\fi\fi}{\ifpgfarrowharpoon-.5\pgfarrowlinewidth\else0pt\fi}%
\pgfarrowsupperhullpoint{0pt}{.5\pgfarrowwidth}%
\pgfarrowshullpoint{\pgfarrowinset}{\ifpgfarrowharpoon-.5\pgfarrowlinewidth\else 0pt\fi}%
%
\pgfarrowssetvisualbackend{\pgfarrowinset}%
\advance\pgfarrowinset by\pgf@yc%
%
\pgfarrowssavethe\pgfutil@tempdima
\pgfarrowssavethe\pgfutil@tempdimb
\pgfarrowssavethe\pgfarrowlinewidth
\pgfarrowssavethe\pgf@ya
\pgfarrowssavethe\pgfarrowinset
},%
drawing code = {%
\pgfsetdash{}{0pt}%
\ifpgfarrowroundjoin\pgfsetroundjoin\else\pgfsetmiterjoin\fi
\ifdim\pgfarrowlinewidth=\pgflinewidth\else\pgfsetlinewidth{\pgfarrowlinewidth}\fi
\pgfpathmoveto{\pgfqpoint{\pgfutil@tempdima\advance\pgf@x by\pgf@ya}{0pt}}%
\pgfpathlineto{\pgfqpoint{\pgf@ya}{\pgfutil@tempdimb}}%
\pgfpathlineto{\pgfqpoint{\pgfarrowinset}{0pt}}%
\ifpgfarrowharpoon \else
\pgfpathlineto{\pgfqpoint{\pgf@ya}{-\pgfutil@tempdimb}}%
\fi
\pgfpathclose
\ifpgfarrowopen\pgfusepathqstroke\else\ifdim\pgfarrowlinewidth>0pt \pgfusepathqfillstroke\else\pgfusepathqfill\fi\fi
},%
parameters = {%
\the\pgfarrowlinewidth,%
\the\pgfarrowlength,%
\the\pgfarrowwidth,%
\the\pgfarrowinset,%
\ifpgfarrowharpoon h\fi%
\ifpgfarrowopen o\fi%
\ifpgfarrowroundjoin j\fi%
}%
}
\CFrestorecatcode
\endinput