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-% --------------------------------------------------------------------------
-%
-% the CHEMMACROS package -- module: `tikz'
-%
-% --------------------------------------------------------------------------
-% Clemens Niederberger
-% --------------------------------------------------------------------------
-% https://github.org/cgnieder/chemmacros/
-% contact@mychemistry.eu
-% --------------------------------------------------------------------------
-% If you have any ideas, questions, suggestions or bugs to report, please
-% feel free to contact me.
-% --------------------------------------------------------------------------
-% Copyright 2011--2020 Clemens Niederberger
-%
-% This work may be distributed and/or modified under the
-% conditions of the LaTeX Project Public License, either version 1.3c
-% 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 2008/05/04 or later.
-%
-% This work has the LPPL maintenance status `maintained'.
-%
-% The Current Maintainer of this work is Clemens Niederberger.
-% --------------------------------------------------------------------------
-\ChemModule*{tikz}{2015/10/26 upright greek symbols}
-
-\RequirePackage{tikz}
-\usetikzlibrary{calc,decorations.pathmorphing}
-
-\ExplSyntaxOn
-
-\tl_const:Nx \c_chemmacros_other_colon_tl { \token_to_str:N : }
-
-% --------------------------------------------------------------------------
-% TikZ drawings - helper macros
-\cs_new_protected:Npn \chemmacros_tikz_picture:nn #1#2
- { \tikzpicture[{#1}] #2 \endtikzpicture }
-\cs_new_protected:Npn \chemmacros_tikz:nn #1#2 { \tikz[{#1}] {#2} }
-\cs_new_protected:Npn \chemmacros_tikz_draw:n #1 { \draw[{#1}] }
-\cs_new_protected:Npn \chemmacros_tikz_node:n #1 { \node[{#1}] }
-\cs_new_protected:Npn \chemmacros_tikz_shade:n #1 { \shade[{#1}] }
-\cs_new_protected:Npn \chemmacros_tikz_shadedraw:n #1 { \shadedraw[{#1}] }
-\cs_new_protected:Npn \chemmacros_tikz_node_in_draw:n #1 { node[{#1}] }
-
-\cs_generate_variant:Nn \chemmacros_tikz_picture:nn { xn }
-\cs_generate_variant:Nn \chemmacros_tikz_draw:n { x }
-\cs_generate_variant:Nn \chemmacros_tikz_node:n { x }
-\cs_generate_variant:Nn \chemmacros_tikz_shade:n { x }
-\cs_generate_variant:Nn \chemmacros_tikz_shadedraw:n { x }
-\cs_generate_variant:Nn \chemmacros_tikz_node_in_draw:n { x }
-
-% --------------------------------------------------------------------------
-% arrow tips for electron movement
-\dim_new:N \l__chemmacros_el_length_dim
-
-% full tip for pairs
-\pgfarrowsdeclare { el } { el }
- {
- \dim_set:Nn \l__chemmacros_el_length_dim
- { 2.5pt + 2.5\pgflinewidth }
- \pgfarrowsleftextend { -\l__chemmacros_el_length_dim }
- \pgfarrowsrightextend { .5\pgflinewidth }
- }
- {
- \dim_set:Nn \l__chemmacros_el_length_dim
- { 2.5pt + 2.5\pgflinewidth }
- \pgfsetdash {} { 0pt }
- \pgfsetroundjoin
- \pgfsetroundcap
- \pgfpathmoveto { \pgfpoint { 0pt } { 0pt } }
- \pgfpathlineto
- {
- \pgfpoint
- { -\l__chemmacros_el_length_dim }
- { .3\l__chemmacros_el_length_dim }
- }
- \pgfpathlineto
- { \pgfpoint { -.5\l__chemmacros_el_length_dim } { 0pt } }
- \pgfpathlineto
- {
- \pgfpoint
- { -\l__chemmacros_el_length_dim }
- { -.3\l__chemmacros_el_length_dim }
- }
- \pgfpathlineto { \pgfpoint { 0pt } { 0pt } }
- \pgfusepathqfillstroke
- }
-
-% half tip on the left
-\pgfarrowsdeclare { left~el } { left~el }
- {
- \dim_set:Nn \l__chemmacros_el_length_dim
- { 2.5pt + 2.5\pgflinewidth }
- \pgfarrowsleftextend { -\l__chemmacros_el_length_dim }
- \pgfarrowsrightextend { .5\pgflinewidth }
- }
- {
- \dim_set:Nn \l__chemmacros_el_length_dim
- { 2.5pt + 2.5\pgflinewidth }
- \pgfsetdash {} { 0pt }
- \pgfsetroundjoin
- \pgfsetroundcap
- \pgfpathmoveto { \pgfpoint { 0pt } { 0pt } }
- \pgfpathlineto
- {
- \pgfpoint
- { -\l__chemmacros_el_length_dim }
- { .3\l__chemmacros_el_length_dim }
- }
- \pgfpathlineto { \pgfpoint { -.5\l__chemmacros_el_length_dim } { 0pt } }
- \pgfpathlineto { \pgfpoint { 0pt } { 0pt } }
- \pgfusepathqfillstroke
- }
-
-% half tip in the right
-\pgfarrowsdeclare { right~el } { right~el }
- {
- \dim_set:Nn \l__chemmacros_el_length_dim
- { 2.5pt + 2.5\pgflinewidth }
- \pgfarrowsleftextend { -\l__chemmacros_el_length_dim }
- \pgfarrowsrightextend { .5\pgflinewidth }
- }
- {
- \dim_set:Nn \l__chemmacros_el_length_dim
- { 2.5pt + 2.5\pgflinewidth }
- \pgfsetdash {} { 0pt }
- \pgfsetroundjoin
- \pgfsetroundcap
- \pgfpathmoveto { \pgfpoint { 0pt } { 0pt } }
- \pgfpathlineto
- {
- \pgfpoint
- { -\l__chemmacros_el_length_dim }
- { -.3\l__chemmacros_el_length_dim }
- }
- \pgfpathlineto { \pgfpoint { -.5\l__chemmacros_el_length_dim } { 0pt } }
- \pgfpathlineto { \pgfpoint { 0pt } { 0pt } }
- \pgfusepathqfillstroke
- }
-% --------------------------------------------------------------------------
-% http://tex.stackexchange.com/a/25689/
-\ChemCompatibilityFrom{5.3}
-\pgfdeclaredecoration{wave}{initial}{
- \state{initial}[
- width = +0pt ,
- next~ state = sine,
- persistent~ precomputation = {
- \pgfmathsetmacro\matchinglength{
- \pgfdecoratedinputsegmentlength /
- int(\pgfdecoratedinputsegmentlength/\pgfdecorationsegmentlength)
- }
- \setlength{\pgfdecorationsegmentlength}{\matchinglength pt}
- }
- ]{}
- \state{sine}[width=\pgfdecorationsegmentlength]{
- \pgfpathsine{
- \pgfpoint
- {0.25\pgfdecorationsegmentlength}
- {0.5\pgfdecorationsegmentamplitude}
- }
- \pgfpathcosine{
- \pgfpoint
- {0.25\pgfdecorationsegmentlength}
- {-0.5\pgfdecorationsegmentamplitude}
- }
- \pgfpathsine{
- \pgfpoint
- {0.25\pgfdecorationsegmentlength}
- {-0.5\pgfdecorationsegmentamplitude}
- }
- \pgfpathcosine{
- \pgfpoint
- {0.25\pgfdecorationsegmentlength}
- {0.5\pgfdecorationsegmentamplitude}
- }
- }
- \state{final}{}
-}
-\EndChemCompatibility
-
-% --------------------------------------------------------------------------
-\file_input_stop:
-
-2015/10/26 - add decoration `wave' (complete sines)