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authorKarl Berry <karl@freefriends.org>2014-01-26 22:14:21 +0000
committerKarl Berry <karl@freefriends.org>2014-01-26 22:14:21 +0000
commitf743052d85acf7d676d00e1903db1806032ac9f6 (patch)
tree09ad4bdf5a9a5607a4727be3a8e7adcd23fe2662 /Master/texmf-dist/source/latex/hobby/hobby.dtx
parentfc11ec42903196eb886eff26e3c251aa47fdd8fb (diff)
hobby
git-svn-id: svn://tug.org/texlive/trunk@32795 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/source/latex/hobby/hobby.dtx')
-rw-r--r--Master/texmf-dist/source/latex/hobby/hobby.dtx242
1 files changed, 195 insertions, 47 deletions
diff --git a/Master/texmf-dist/source/latex/hobby/hobby.dtx b/Master/texmf-dist/source/latex/hobby/hobby.dtx
index c41e8f8d9fc..74ad06c13dd 100644
--- a/Master/texmf-dist/source/latex/hobby/hobby.dtx
+++ b/Master/texmf-dist/source/latex/hobby/hobby.dtx
@@ -110,7 +110,7 @@ and the derived files hobby.code.tex
%</driver>
% \fi
%
-% \CheckSum{3002}
+% \CheckSum{3304}
%
% \CharacterTable
% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
@@ -135,6 +135,7 @@ and the derived files hobby.code.tex
% \providecommand*{\url}{\texttt}
% \title{The \textsf{Hobby} package: code}
% \author{Andrew Stacey \\ \url{stacey@math.ntnu.no}}
+% \date{\hobbyVersion\ from\ \hobbyDate}
% \maketitle
%
%
@@ -165,17 +166,42 @@ and the derived files hobby.code.tex
%
% We declare all our variables.
%
+% Start with version and date, together with a check to see if we've been loaded twice (fail gracefully if so).
+%
+% \begin{macrocode}
+\tl_clear:N \l_tmpa_tl
+\tl_if_exist:NT \g__hobby_version
+{
+ \tl_set:Nn \l_tmpa_tl {
+ \ExplSyntaxOff
+ \tl_clear:N \l_tmpa_tl
+ \endinput
+ }
+}
+\tl_use:N \l_tmpa_tl
+
+\tl_new:N \g__hobby_version
+\tl_new:N \g__hobby_date
+\tl_set:Nn \g__hobby_version {1.4}
+\tl_set:Nn \g__hobby_date {2014-01-21}
+\DeclareDocumentCommand \hobbyVersion {}
+{
+ \tl_use:N \g__hobby_version
+}
+\DeclareDocumentCommand \hobbyDate {}
+{
+ \tl_use:N \g__hobby_date
+}
+% \end{macrocode}
+%
% The function for computing the lengths of the control points depends on three parameters.
% These are set to \(a = \sqrt{2}\), \(b = 1/16\), and \(c = \frac{3 - \sqrt{5}}{2}\).
% \begin{macrocode}
\fp_new:N \g_hobby_parama_fp
\fp_new:N \g_hobby_paramb_fp
\fp_new:N \g_hobby_paramc_fp
-
\fp_gset:Nn \g_hobby_parama_fp {2^.5}
-
\fp_gset:Nn \g_hobby_paramb_fp {1/16}
-
\fp_gset:Nn \g_hobby_paramc_fp {(3-5^.5)/2}
% \end{macrocode}
%
@@ -195,6 +221,18 @@ and the derived files hobby.code.tex
% \end{macrocode}
% \end{macro}
%
+% \begin{macro}{\l_hobby_save_aux_bool}
+% \Verb+\l_hobby_save_aux_bool+ is \Verb+true+ if when saving paths then they should be saved to the \Verb+aux+ file.
+% \begin{macrocode}
+\bool_new:N \l_hobby_save_aux_bool
+\bool_set_true:N \l_hobby_save_aux_bool
+\DeclareDocumentCommand \HobbyDisableAux {}
+{
+ \bool_set_false:N \l_hobby_save_aux_bool
+}
+% \end{macrocode}
+% \end{macro}
+%
% \begin{macro}{\l_hobby_points_array}
% \Verb+\l_hobby_points_array+ is an array holding the specified points on the path.
% In the \LaTeX3 code, a ``point'' is a token list of the form \Verb+x = <number>, y = <number>+.
@@ -568,7 +606,7 @@ and the derived files hobby.code.tex
(\array_get:Nn \l_hobby_points_y_array {#1 + 1})
- (\array_get:Nn \l_hobby_points_y_array {#1})}
- \fp_atantwo:NNN \l_hobby_tempc_fp \l_hobby_tempb_fp \l_hobby_tempa_fp
+ \fp_set:Nn \l_hobby_tempc_fp { atan ( \l_hobby_tempb_fp, \l_hobby_tempa_fp ) }
\fp_veclen:NVV \l_hobby_tempd_fp \l_hobby_tempa_fp \l_hobby_tempb_fp
\array_push:Nx \l_hobby_angles_array {\fp_to_tl:N \l_hobby_tempc_fp}
@@ -577,19 +615,6 @@ and the derived files hobby.code.tex
% \end{macrocode}
% \end{macro}
%
-%
-% \begin{macro}{\fp_atantwo:NNN}
-% Computes the angle of the point specified by the latter two arguments, storing the answer in the first.
-% The inverse tangent function is not yet implemented in \LaTeX3 so for now we use the \Verb+pgfmath+ function.
-% When this is implemented in \LaTeX3 this should be replaced.
-% \begin{macrocode}
-\cs_new:Nn \fp_atantwo:NNN {
- \pgfmathparse{rad(atan2(\fp_use:N #3,\fp_use:N #2))}
- \exp_args:NNo \fp_set:Nn #1 {\pgfmathresult}
-}
-% \end{macrocode}
-% \end{macro}
-%
% \begin{macro}{\fp_veclen:NVV}
% Computes the length of the vector specified by the latter two arguments, storing the answer in the first.
% \begin{macrocode}
@@ -720,7 +745,7 @@ and the derived files hobby.code.tex
\fp_if_undefined:NF \l_hobby_out_angle_fp
{
\fp_set:Nn \l_hobby_tempa_fp { \l_hobby_out_angle_fp
- - \array_get:Nn \l_hobby_angles_array {0} }
+ - \array_get:Nn \l_hobby_angles_array {0}}
% \end{macrocode}
% We want to ensure that these angles lie in the range \((-\pi,\pi]\).
% So if the angle is bigger than \(\pi\), we subtract \(2 \pi\).
@@ -819,21 +844,12 @@ and the derived files hobby.code.tex
% \end{macrocode}
% Similarly, we check to see if the angle is less than \(-\pi\).
% \begin{macrocode}
- \fp_compare:nTF {\l_hobby_tempa_fp < -\c_pi_fp }
+ \fp_compare:nTF {\l_hobby_tempa_fp <= -\c_pi_fp }
{
\fp_add:Nn \l_hobby_tempa_fp {2 * \c_pi_fp}
}
{}
% \end{macrocode}
-% At the moment, the mixing of \Verb+pgfmath+ and \LaTeX3 that goes into computing the differences means that we can never get \Verb+\c_pi_fp+ so testing for equality is meaningless.
-% However, when \Verb+atan2+ is implemented in \LaTeX3 then this might make sense again.
-%
-%^^A \fp_compare:nTF {\l_hobby_tempa_fp = -\c_pi_fp }
-%^^A {
-%^^A \fp_add:Nn \l_hobby_tempa_fp {2 * \c_pi_fp}
-%^^A }
-%^^A {}
-%
% The wrapping routine might not get it right at the edges so we add in the override.
% \begin{macrocode}
\array_get:NnNTF \l_hobby_excess_angle_array {##1} \l_tmpa_tl {
@@ -997,7 +1013,7 @@ and the derived files hobby.code.tex
\array_put:Nnn \l_hobby_matrix_b_array {0} {1}
\array_put:Nnn \l_hobby_matrix_c_array {0} {0}
\fp_set:Nn \l_hobby_tempa_fp { \l_hobby_out_angle_fp
- - \array_get:Nn \l_hobby_angles_array {0} }
+ - \array_get:Nn \l_hobby_angles_array {0}}
% \end{macrocode}
% We want to ensure that these angles lie in the range \((-\pi,\pi]\).
% So if the angle is bigger than \(\pi\), we subtract \(2 \pi\).
@@ -1370,8 +1386,14 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
% The path-generation code doesn't know what to actually do with the path so the initialisation code will set some macros to do that.
% This is an auxiliary command that sets these macros.
% \begin{macrocode}
+\cs_new:Npn \hobby_moveto:nnn #1#2#3 {}
+\cs_new:Npn \hobby_curveto:nnn #1#2#3 {}
+\cs_new:Npn \hobby_close:n #1 {}
+\cs_generate_variant:Nn \hobby_moveto:nnn {VVV,nnV}
+\cs_generate_variant:Nn \hobby_curveto:nnn {VVV}
+\cs_generate_variant:Nn \hobby_close:n {V}
\cs_new:Nn \hobby_set_cmds:nnn {
- \cs_gset_eq:NN \hobby_moveto:n #1
+ \cs_gset_eq:NN \hobby_moveto:nnn #1
\cs_gset_eq:NN \hobby_curveto:nnn #2
\cs_gset_eq:NN \hobby_close:n #3
}
@@ -1498,7 +1520,7 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\cs_new:Nn \hobby_use_path: {
\bool_if:NT \l_hobby_disjoint_bool {
\array_get:NnN \l_hobby_points_array {0} \l_tmpa_tl
- \exp_args:No \hobby_moveto:n {\l_tmpa_tl}
+ \hobby_moveto:nnV {} {} \l_tmpa_tl
}
\int_step_inline:nnnn {1} {1} {\l_hobby_npoints_int} {
\array_get:NnN \l_hobby_controla_array {##1} \l_tmpa_tl
@@ -1506,20 +1528,20 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\array_get:NnN \l_hobby_points_array {##1} \l_tmpc_tl
\array_get:NnN \l_hobby_actions_array {##1} \l_tmpd_tl
\int_compare:nNnTF {\tl_item:Nn \l_tmpd_tl {1}} = {\l_hobby_draw_int} {
- \exp_args:Nooo \hobby_curveto:nnn {\l_tmpa_tl} {\l_tmpb_tl} {\l_tmpc_tl}
+ \hobby_curveto:VVV \l_tmpa_tl \l_tmpb_tl \l_tmpc_tl
}{
\bool_gset_false:N \l_hobby_closed_bool
- \exp_args:No \hobby_moveto:n {\l_tmpc_tl}
+ \hobby_moveto:VVV \l_tmpa_tl \l_tmpb_tl \l_tmpc_tl
}
\tl_if_eq:xnTF {\tl_item:Nn \l_tmpd_tl {2}} {1} {
\bool_gset_false:N \l_hobby_closed_bool
- \exp_args:No \hobby_moveto:n {\l_tmpc_tl}
+ \hobby_moveto:VVV \l_tmpa_tl \l_tmpb_tl \l_tmpc_tl
}{}
}
\bool_if:NT \l_hobby_closed_bool {
\array_get:NnN \l_hobby_points_array {0} \l_tmpa_tl
- \exp_args:No \hobby_close:n {\l_tmpa_tl}
- }
+ \hobby_close:V \l_tmpa_tl
+ }
}
% \end{macrocode}
% \end{macro}
@@ -1582,6 +1604,8 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\tl_if_exist_p:c {g_hobby_#1_path}
&&
! \tl_if_exist_p:c {g_hobby_#1_path_saved}
+ &&
+ \l_hobby_save_aux_bool
}
{
\tl_clear:N \l_tmpa_tl
@@ -1673,6 +1697,24 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
}
% \end{macrocode}
%
+% \begin{macro}{hobbyatan2}
+% The original PGF version of \Verb+atan2+ had the arguments the wrong way around.
+% This was fixed in the CVS version in July 2013, but as old versions are likely to be in use for some time, we define a wrapper function that ensures that the arguments are correct.
+% \begin{macrocode}
+\pgfmathparse{atan2(0,1)}
+\def\hobby@temp{0.0}
+\ifx\pgfmathresult\hobby@temp
+ \pgfmathdeclarefunction{hobbyatan2}{2}{%
+ \pgfmathatantwo@{#1}{#2}%
+ }
+\else
+ \pgfmathdeclarefunction{hobbyatan2}{2}{%
+ \pgfmathatantwo@{#2}{#1}%
+ }
+\fi
+% \end{macrocode}
+% \end{macro}
+%
% \begin{macro}{\hobby@curveto}
% This is passed to the path-generation code to translate the path into a PGF path.
% \begin{macrocode}
@@ -1685,8 +1727,8 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
% \begin{macro}{\hobby@moveto}
% This is passed to the path-generation code to translate the path into a PGF path.
% \begin{macrocode}
-\def\hobby@moveto#1{%
- \pgfpathmoveto{\hobby@topgf{#1}}%
+\def\hobby@moveto#1#2#3{%
+ \pgfpathmoveto{\hobby@topgf{#3}}%
}
% \end{macrocode}
% \end{macro}
@@ -1896,7 +1938,7 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\advance\pgf@xb by -\pgf@xa
\advance\pgf@yb by -\pgf@ya
\pgfmathsetmacro\hobby@done{sqrt((\pgf@xb/\hobby@sf)^2 + (\pgf@yb/\hobby@sf)^2)}%
- \pgfmathsetmacro\hobby@omegaone{rad(atan2(\pgf@xb,\pgf@yb))}%
+ \pgfmathsetmacro\hobby@omegaone{rad(hobbyatan2(\pgf@yb,\pgf@xb))}%
% \end{macrocode}
% Now we do the same with the vector from the zeroth to the first point.
% \begin{macrocode}
@@ -1904,7 +1946,7 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\advance\pgf@xa by -\pgf@x
\advance\pgf@ya by -\pgf@y
\pgfmathsetmacro\hobby@dzero{sqrt((\pgf@xa/\hobby@sf)^2 + (\pgf@ya/\hobby@sf)^2)}%
- \pgfmathsetmacro\hobby@omegazero{rad(atan2(\pgf@xa,\pgf@ya))}%
+ \pgfmathsetmacro\hobby@omegazero{rad(hobbyatan2(\pgf@ya,\pgf@xa))}%
% \end{macrocode}
% \Verb+\hobby@psi+ is the angle subtended at the midpoint.
% We adjust to ensure that it is in the right range.
@@ -2021,7 +2063,6 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
% \end{macrocode}
% \end{macro}
%
-%
% \iffalse
%</pgflibrary>
% \fi
@@ -2141,12 +2182,14 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
},
restore Hobby path/.code={%
\pgfextra{%
- \hobbyinit\hobby@moveto\hobby@curveto\hobby@close
+ \hobbyinit\hobby@tikz@moveto\hobby@tikz@curveto\hobby@tikz@close
+ \global\let\hobby@collected@onpath\pgfutil@empty
\hobbyrestorepath{#1}}
},
restore and use Hobby path/.code 2 args={%
\pgfextra{%
- \hobbyinit\hobby@moveto\hobby@curveto\hobby@close
+ \hobbyinit\hobby@tikz@moveto\hobby@tikz@curveto\hobby@tikz@close
+ \global\let\hobby@collected@onpath\pgfutil@empty
\hobbyrestorepath{#1}%
\hobbyusepath{#2}%
}
@@ -2164,12 +2207,107 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
Hobby externalize/.is if=hobby@externalise
}
% \end{macrocode}
+%
+% \begin{macro}{\hobby@tikz@curveto}
+% This is passed to the path-generation code to translate the path into a PGF path.
+% \begin{macrocode}
+\def\hobby@tikz@curveto#1#2#3{%
+ \pgfutil@ifundefined{tikz@timer@start}{%
+ \expandafter\hobby@topgf\expandafter{\hobby@initial@pt}%
+ \edef\tikz@timer@start{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ }{}%
+ \hobby@topgf{#1}%
+ \edef\tikz@timer@cont@one{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \hobby@topgf{#2}%
+ \edef\tikz@timer@cont@two{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \hobby@topgf{#3}%
+ \let\tikz@timer=\tikz@timer@curve
+ \edef\tikz@timer@end{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \ifx\hobby@collected@onpath\pgfutil@empty
+ \else
+ \expandafter\hobby@nodes@onpath\hobby@collected@onpath\relax\relax
+ \fi
+ \pgfpathcurveto{\hobby@topgf{#1}}{\hobby@topgf{#2}}{\hobby@topgf{#3}}%
+ \hobby@topgf{#3}%
+ \edef\tikz@timer@start{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\hobby@tikz@moveto}
+% This is passed to the path-generation code to translate the path into a PGF path.
+% \begin{macrocode}
+\def\hobby@tikz@moveto#1#2#3{%
+ \pgfutil@ifundefined{tikz@timer@start}{%
+ \expandafter\hobby@topgf\expandafter{\hobby@initial@pt}%
+ \edef\tikz@timer@start{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ }{}%
+ \hobby@topgf{#3}%
+ \edef\tikz@timer@end{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \def\pgf@temp{#1}%
+ \ifx\pgf@temp\pgfutil@empty
+ \let\tikz@timer=\tikz@timer@line
+ \else
+ \hobby@topgf{#1}%
+ \edef\tikz@timer@cont@one{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \hobby@topgf{#2}%
+ \edef\tikz@timer@cont@two{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \let\tikz@timer=\tikz@timer@curve
+ \fi
+ \ifx\hobby@collected@onpath\pgfutil@empty
+ \else
+ \expandafter\hobby@nodes@onpath\hobby@collected@onpath\relax\relax
+ \fi
+ \pgfpathmoveto{\hobby@topgf{#3}}%
+ \hobby@topgf{#3}%
+ \edef\tikz@timer@start{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\hobby@tikz@close}
+% Closes a path.
+% \begin{macrocode}
+\def\hobby@tikz@close#1{%
+ \hobby@topgf{#1}%
+ \edef\tikz@timer@end{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
+ \let\tikz@timer=\tikz@timer@line
+ \ifx\hobby@collected@onpath\pgfutil@empty
+ \else
+ \expandafter\hobby@nodes@onpath\hobby@collected@onpath\relax\relax
+ \fi
+ \pgfpathclose
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\hobby@nodes@onpath}
+% \begin{macrocode}
+\def\hobby@nodes@onpath#1#2\relax{%
+ \gdef\hobby@collected@onpath{#2}%
+ \def\pgf@temp{#1}%
+ \ifx\pgf@temp\pgfutil@empty
+ \else
+ \def\@gtempa{\relax}
+ \ifx\pgf@temp\@gtempa
+ \else
+ \tikz@node@is@a@labeltrue
+ \tikz@scan@next@command#1\pgf@stop
+ \tikz@node@is@a@labelfalse
+ \fi
+ \fi
+}
+% \end{macrocode}
+% \end{macro}
+%
% \begin{macro}{\curvethrough}
% This is the parent command.
% We initialise the path-generation code, set any parameters, and then hand over control to the point processing macro.
% \begin{macrocode}
\newcommand\curvethrough[2][]{%
- \hobbyinit\hobby@moveto\hobby@curveto\hobby@close
+ \hobbyinit\hobby@tikz@moveto\hobby@tikz@curveto\hobby@tikz@close
+ \global\let\hobby@collected@onpath\pgfutil@empty
+ \let\hobby@initial@pt\pgfutil@empty
\hobbysetparams{#1}%
\tikzset{designated Hobby path=this}%
\global\let\hobby@this@opts=\pgfutil@empty
@@ -2191,6 +2329,9 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
#1%
\pgfmathsetmacro\hobby@x{\the\pgf@x/1cm}%
\pgfmathsetmacro\hobby@y{\the\pgf@y/1cm}%
+ \ifx\hobby@initial@pt\pgfutil@empty
+ \xdef\hobby@initial@pt{x = \hobby@x, y = \hobby@y}%
+ \fi
\expandafter\hobbyaddpoint\expandafter{\hobby@point@options,%
x = \hobby@x, y = \hobby@y}%
\def\hobby@point@options{}%
@@ -2246,9 +2387,12 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
% To ensure that the generation code is called, we add a lot of hooks to lots of TikZ commands.
% \begin{macrocode}
\def\hobby@curveto@auto{%
- \hobbyinit\hobby@moveto\hobby@curveto\hobby@close
+ \hobbyinit\hobby@tikz@moveto\hobby@tikz@curveto\hobby@tikz@close
+ \expandafter\gdef\expandafter\hobby@collected@onpath\expandafter{\expandafter{\tikz@collected@onpath} }%
+ \let\tikz@collected@onpath=\pgfutil@empty
\pgfmathsetmacro\hobby@x{\the\tikz@lastx/1cm}%
\pgfmathsetmacro\hobby@y{\the\tikz@lasty/1cm}%
+ \xdef\hobby@initial@pt{x = \hobby@x, y = \hobby@y}%
\expandafter\hobbysetparams\expandafter{\hobby@next@opts}%
\expandafter\hobbyaddpoint\expandafter{\hobby@point@options,%
x = \hobby@x, y = \hobby@y}%
@@ -2259,7 +2403,8 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\global\let\hobby@this@opts=\pgfutil@empty
\global\let\hobby@next@opts=\pgfutil@empty
\global\let\hobby@point@options=\pgfutil@empty
- \tikz@scan@one@point\hobby@addfromtikz}
+ \tikz@scan@one@point\hobby@addfromtikz%
+}
% \end{macrocode}
% \end{macro}
%
@@ -2349,6 +2494,8 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
% \begin{macro}{\hobby@midcurveto@auto}
% \begin{macrocode}
\def\hobby@midcurveto@auto{%
+ \expandafter\expandafter\expandafter\gdef\expandafter\expandafter\expandafter\hobby@collected@onpath\expandafter\expandafter\expandafter{\expandafter\hobby@collected@onpath\expandafter{\tikz@collected@onpath} }%
+ \let\tikz@collected@onpath=\pgfutil@empty
\let\tikz@scan@point@options=\pgfutil@empty
\global\let\hobby@action=\pgfutil@empty
\global\let\hobby@this@opts=\pgfutil@empty
@@ -2671,6 +2818,7 @@ sin ( (\array_get:Nn \l_hobby_angles_array {##1})
\hobby@qinit@tikz@modcmd\tikz@to
\hobby@qinit@tikz@modcmd\pgf@stop
\hobby@qinit@tikz@modcmd\tikz@decoration
+ \hobby@qinit@tikz@modcmd\tikz@@close
\global\let\hobby@curveto@delegate=\hobby@qmidcurveto@auto
}
% \end{macrocode}