metapost/context/base/mpiv/mp-figs.mpiv


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%D \module
%D   [       file=mp-figs.mpiv,
%D        version=2003.01.15,
%D          title=\CONTEXT\ \METAPOST\ graphics,
%D       subtitle=figures,
%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 licen-en.pdf for
%C details.

if known context_figs : endinput ; fi ;

boolean context_figs ; context_figs := true ;

% todo: check defined

def registerfigure(expr name,width,height) =
    begingroup ;
    save s ; string s ; s := cleanstring(name) ;
    scantokens( s & "_width  := " & decimal(width )) ;
    scantokens( s & "_height := " & decimal(height)) ;
    endgroup ;
enddef ;

vardef figuresize(expr name) =
    save s, p ; string s ; pair p ;
    s := cleanstring(name) ;
    scantokens( "p := " & "(" & s & "_width" & "," & s & "_height" & ")" ) ;
    p
enddef ;

vardef figurewidth(expr name) =
    xpart figuresize(name)
enddef ;

vardef figureheight(expr name) =
    ypart figuresize(name)
enddef ;

let figuredimensions = figuresize ; % for old times sake

def naturalfigure(expr name) =
    externalfigure name xyscaled(figuresize(name))
enddef ;