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%D \module
%D [ file=meta-mat,
%D version=2013.07.19,
%D title=\METAPOST\ Graphics,
%D subtitle=Math,
%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.
%D This is just an example library not meant for production.
% A few accents:
% / for cambria
\startMPextensions
vardef math_stacker_overbracket_shape =
image (
draw
(0,OverlayOffset) --
(0,OverlayHeight-OverlayOffset) --
(OverlayWidth,OverlayHeight-OverlayOffset) --
(OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
)
enddef ;
vardef math_stacker_underbracket_shape =
math_stacker_overbracket_shape rotated 180
enddef ;
vardef math_stacker_overparent_shape =
image (
draw
(0,OverlayOffset) ...
(OverlayWidth/2,OverlayHeight-OverlayOffset) ...
(OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
)
enddef ;
vardef math_stacker_underparent_shape =
math_stacker_overparent_shape rotated 180
enddef ;
vardef math_stacker_overbrace_shape =
image (
draw
(0,OverlayOffset) ...
(OverlayWidth/4-OverlayOffset,OverlayHeight-OverlayOffset) ...
(OverlayWidth/2-OverlayOffset,OverlayHeight-OverlayOffset) ...
(OverlayWidth/2,OverlayHeight) &
(OverlayWidth/2,OverlayHeight) ...
(OverlayWidth/2+OverlayOffset,OverlayHeight-OverlayOffset) ...
(3OverlayWidth/4+OverlayOffset,OverlayHeight-OverlayOffset) ...
(OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
)
enddef ;
vardef math_stacker_underbrace_shape =
math_stacker_overbrace_shape rotated 180
enddef ;
vardef math_stacker_overbar_shape =
image (
draw
(0,OverlayOffset) -- (OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
)
enddef ;
vardef math_stacker_underbar_shape =
math_stacker_overbar_shape rotated 180
enddef ;
% arrows
vardef math_stacker_arrow_shape(expr axis, ex, em) =
image (
interim ahlength := ex/2;
drawarrow
((OverlayWidth,ex/2) -- (0,ex/2))
withcolor
OverlayLineColor ;
setbounds currentpicture to unitsquare xysized(OverlayWidth,ex) ;
)
enddef ;
vardef math_stacker_leftrightarrow_shape(expr axis, ex, em) =
image (
interim ahlength := ex/2;
drawdblarrow
((OverlayWidth,ex/2) -- (0,ex/2))
withcolor
OverlayLineColor ;
setbounds currentpicture to unitsquare xysized(OverlayWidth,ex) ;
)
enddef ;
vardef math_stacker_rightoverleftarrow_shape(expr axis, ex, em) =
image (
interim ahlength := ex/2;
drawdoublearrows
((OverlayWidth,ex/2) -- (0,ex/2))
withcolor
OverlayLineColor ;
setbounds currentpicture to unitsquare xysized(OverlayWidth,ex) ;
)
enddef ;
vardef math_stacker_leftarrow_shape(expr axis, ex, em) =
math_stacker_arrow_shape(axis,ex,em)
enddef ;
vardef math_stacker_rightarrow_shape(expr axis, ex, em) =
math_stacker_arrow_shape(axis,ex,em) rotated 180
enddef ;
% main handler
def math_stacker_draw_accent(expr p) =
draw p withpen pencircle scaled OverlayLineWidth xyscaled (2,3) rotated 45 ;
enddef ;
def math_stacker_draw_arrow(expr p) =
draw p withpen pencircle scaled OverlayLineWidth ;
enddef ;
\stopMPextensions
\startuniqueMPgraphic{math:stacker:\number"FE3B4}{axis,ex,em}
math_stacker_draw_accent(math_stacker_overbracket_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE3B5}{axis,ex,em}
math_stacker_draw_accent(math_stacker_underbracket_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE3DC}{axis,ex,em}
math_stacker_draw_accent(math_stacker_overparent_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE3DD}{axis,ex,em}
math_stacker_draw_accent(math_stacker_underparent_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE3DE}{axis,ex,em}
math_stacker_draw_accent(math_stacker_overbrace_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE3DF}{axis,ex,em}
math_stacker_draw_accent(math_stacker_underbrace_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE33E}{axis,ex,em}
math_stacker_draw_accent(math_stacker_overbar_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"FE33F}{axis,ex,em}
math_stacker_draw_accent(math_stacker_underbar_shape) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"2190}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_leftarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em})) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"2192}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_rightarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em})) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"2194}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_leftrightarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em})) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"27F7}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_leftrightarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em})) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{math:stacker:\number"21C4}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_rightoverleftarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em})) ;
\stopuniqueMPgraphic
%D Radicals:
\startMPextensions
vardef math_radical_simple(expr w,h,d,o) =
(-h/2-o,h/2-o) --
(-h/4-o,-d-o) --
(-o,h+o) --
(w+o,h+o) --
(w+o,h-h/10+o)
enddef ;
\stopMPextensions
\startuniqueMPgraphic{math:radical:default}{axis,ex,em}
draw
math_radical_simple(OverlayWidth,OverlayHeight,OverlayDepth,OverlayOffset)
withpen pencircle xscaled (2OverlayLineWidth) yscaled (3OverlayLineWidth/4) rotated 30
% dashed evenly
withcolor OverlayLineColor ;
\stopuniqueMPgraphic
% \setupmathstackers
% [vfenced]
% [color=darkred,
% alternative=mp]
\endinput
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