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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.
% A few accents:
%
% / for cambria
%D We need this for Alan, who nests math in \METAPOST:
\unprotect
\setupmathstackers
[\c!mp=minifun::math:stacker:\number\scratchunicode]
\protect
\startMPextensions
vardef math_stacker_bracket_shape(expr delta, rotate) =
image (
draw
(0,OverlayOffset) --
(0,delta-OverlayOffset) --
(OverlayWidth,delta-OverlayOffset) --
(OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
vardef math_stacker_parent_shape(expr delta, rotate) =
image (
draw
(0,OverlayOffset) ...
(OverlayWidth/2,delta-OverlayOffset) ...
(OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
vardef math_stacker_brace_shape(expr delta, rotate) =
image (
draw
(0,OverlayOffset) ...
(OverlayWidth/4-OverlayOffset,delta-OverlayOffset) ...
(OverlayWidth/2-OverlayOffset,delta-OverlayOffset) ...
(OverlayWidth/2,delta) &
(OverlayWidth/2,delta) ...
(OverlayWidth/2+OverlayOffset,delta-OverlayOffset) ...
(3OverlayWidth/4+OverlayOffset,delta-OverlayOffset) ...
(OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
vardef math_stacker_bar_shape(expr rotate) =
image (
draw
(0,OverlayOffset) -- (OverlayWidth,OverlayOffset)
withcolor
OverlayLineColor ;
setbounds currentpicture to boundingbox currentpicture bottomenlarged OverlayOffset ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
% arrows
vardef math_stacker_arrow_shape(expr axis, ex, em, rotate) =
image (
interim ahlength := ex/2;
drawarrow
((OverlayWidth,ex/2) -- (0,ex/2))
withcolor
OverlayLineColor ;
setbounds currentpicture to unitsquare xysized(OverlayWidth,ex) ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
vardef math_stacker_leftrightarrow_shape(expr axis, ex, em, rotate) =
image (
interim ahlength := ex/2;
drawdblarrow
((OverlayWidth,ex/2) -- (0,ex/2))
withcolor
OverlayLineColor ;
setbounds currentpicture to unitsquare xysized(OverlayWidth,ex) ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
vardef math_stacker_rightoverleftarrow_shape(expr axis, ex, em, rotate) =
image (
interim ahlength := ex/2;
drawdoublearrows
((OverlayWidth,ex/2) -- (0,ex/2))
withcolor
OverlayLineColor ;
setbounds currentpicture to unitsquare xysized(OverlayWidth,ex) ;
if rotate :
currentpicture := currentpicture rotated 180 ;
fi ;
)
enddef ;
% main handler
def math_stacker_draw_accent(expr p) =
% draw p withpen pencircle scaled OverlayLineWidth xyscaled (2,3) rotated 45 ;
% draw p withpen pencircle xscaled (2OverlayLineWidth) yscaled (3OverlayLineWidth/4) rotated 45 ;
draw p withpen pencircle scaled OverlayLineWidth ;
enddef ;
def math_stacker_draw_arrow(expr p) =
draw p withpen pencircle scaled OverlayLineWidth ;
enddef ;
\stopMPextensions
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE3B4\else23B4\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_bracket_shape(OverlayHeight,false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE3B5\else23B5\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_bracket_shape(OverlayDepth,true)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE3DC\else23DC\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_parent_shape(OverlayHeight,false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE3DD\else23DD\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_parent_shape(OverlayDepth,true)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE3DE\else23DE\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_brace_shape(OverlayHeight,false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE3DF\else23DF\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_brace_shape(OverlayDepth,true)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE33E\else203E\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_bar_shape(false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"\ifcase\contextlmtxmode FE33F\else203F\fi}{axis,ex,em}
math_stacker_draw_accent(math_stacker_bar_shape(true)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"2190}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_arrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em},false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"2192}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_arrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em},true)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"2194}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_leftrightarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em},false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"27F7}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_leftrightarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em},false)) ;
\stopuniqueMPgraphic
\startuniqueMPgraphic{minifun::math:stacker:\number"21C4}{axis,ex,em}
math_stacker_draw_arrow(math_stacker_rightoverleftarrow_shape(\MPvar{axis},\MPvar{ex},\MPvar{em},false)) ;
\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{minifun::math:radical:default}{axis,ex,em}
draw
math_radical_simple(OverlayWidth,OverlayHeight,OverlayDepth,OverlayOffset)
% withpen pencircle xscaled (2OverlayLineWidth) yscaled (3OverlayLineWidth/4) rotated 30
withpen pencircle scaled OverlayLineWidth
% dashed evenly
withcolor OverlayLineColor ;
\stopuniqueMPgraphic
% already setup:
%
% definemathradical [sqrt] [mp=minifun::math:radical:default]
\continueifinputfile{meta-imp-mat.mkiv}
\setupmathstackers [both] [color=darkred,alternative=mp]
\setupmathstackers [top] [color=darkred,alternative=mp]
\setupmathstackers [bottom] [color=darkred,alternative=mp]
\startTEXpage[offset=10pt]
$
\overbracket {a+b+c+d} \quad
\underbracket {a+b+c+d} \quad
\doublebracket {a+b+c+d}
$
\blank[2*big]
$
\overparent {a+b+c+d} \quad
\underparent {a+b+c+d} \quad
\doubleparent {a+b+c+d}
$
\blank[2*big]
$
\overbrace {a+b+c+d} \quad
\underbrace {a+b+c+d} \quad
\doublebrace {a+b+c+d}
$
\blank[2*big]
$
\overbar {a+b+c+d} \quad
\underbar {a+b+c+d} \quad
\doublebar {a+b+c+d}
$
\blank[2*big]
$
\overleftarrow {a+b+c+d} \quad
\overrightarrow {a+b+c+d}
$
\blank[2*big]
$
\underleftarrow {a+b+c+d} \quad
\underrightarrow {a+b+c+d}
$
\blank[2*big]
\setupmathradical[sqrt][alternative=mp,color=darkgreen]
$
\sqrt[2]{a+b+c+d} \quad
$
\stopTEXpage
|
