%D \module
%D   [       file=meta-scn,
%D        version=2019.07.19,
%D          title=\METAPOST\ Graphics,
%D       subtitle=LMTX support,
%D         author=Hans Hagen,
%D           date=\ currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

\unprotect

\unexpanded\def\defineMPparameterset[#1]{\clf_lmt_parameters_define{#1}}
\unexpanded\def\presetMPparameters  [#1]{\clf_lmt_parameters_preset{#1}}
\unexpanded\def\resetMPparameters   [#1]{\clf_lmt_parameters_reset {#1}}

% \unexpanded\def\useMPgraphic
%   {\doifnextoptionalelse\meta_use_MP_graphic_yes\meta_use_MP_graphic_nop}

% \def\meta_use_MP_graphic_nop
%   {\dodoublegroupempty\meta_use_graphic}

% \def\meta_use_MP_graphic_yes
%   {\dodoubleempty\meta_use_graphic_new}

% \def\meta_use_graphic_new[#1][#2]%
%   {\begingroup
%    % If really needed weh can use grouplevel but normally these graphics are
%    % not nested.
%    \clf_lmt_parameters_preset{#1}[#2]%
%    \meta_use_graphic{#1}{}%
%    \clf_lmt_parameters_reset{#1}%
%    \endgroup}

\unexpanded\def\useMPmacro
  {\dotripleempty\meta_use_macro}

\def\meta_use_macro[#1][#2][#3]%
  {\ifthirdargument
     \meta_begin_graphic_group{#1}%
     \meta_enable_include
     \clf_lmt_parameters_preset{#2}[#3]%
     \meta_process_graphic{lmt_#2;}%
     \clf_lmt_parameters_reset{#2}%
     \meta_end_graphic_group
   \else\ifsecondargument
     \doifelseassignment{#2}
       {\let\currentMPinstance\defaultMPinstance
        \meta_enable_include
        \clf_lmt_parameters_preset{#1}[#2]%
        \meta_process_graphic{lmt_#1;}%
        \clf_lmt_parameters_reset{#1}}%
       {\meta_begin_graphic_group{#1}%
        \meta_enable_include
        \meta_process_graphic{lmt_#1;}%
        \meta_end_graphic_group}%
   \else
     \let\currentMPinstance\defaultMPinstance
     \meta_enable_include
     \meta_process_graphic{lmt_#1;}%
   \fi\fi}

\protect