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local nps = fonts.helpers.newprivateslot
local fake20D6 = nps("arrow fake 0x20D6")
local fake20D7 = nps("arrow fake 0x20D7")
local fake20E1 = nps("arrow fake 0x20E1")
local fake20EE = nps("arrow fake 0x20EE")
local fake20EF = nps("arrow fake 0x20EF")
local fake034D = nps("arrow fake 0x034D")
local real034D = nps("arrow real 0x034D")
return {
name = "common-math-jmn",
version = "1.00",
comment = "Goodies that complement the JMN collection.",
author = "Hans, Mikael",
copyright = "ConTeXt development team",
mathematics = {
helpers = {
addmissing = function(main)
local max = math.max
local copytable = table.copy
local slotcommand = fonts.helpers.commands.slot
local builders = fonts.handlers.vf.math.builders
local ps = fonts.helpers.privateslot
local characters = main.characters
local variables = main.goodies.mathematics and main.goodies.mathematics.variables or { }
local joinrelfactor = variables.joinrelfactor or 3
local notshiftfactor = variables.notshiftfactor or 0
local umbracepiece = ps("um brace piece")
local lmbracepiece = ps("lm brace piece")
local cmbracepiece = ps("cm brace piece")
local ulbracepiece = ps("ul brace piece")
local urbracepiece = ps("ur brace piece")
local llbracepiece = ps("ll brace piece")
local lrbracepiece = ps("lr brace piece")
builders.brace(main,0x23DE,ulbracepiece,cmbracepiece,lrbracepiece,llbracepiece,cmbracepiece,urbracepiece,"top")
builders.brace(main,0x23DF,llbracepiece,cmbracepiece,urbracepiece,ulbracepiece,cmbracepiece,lrbracepiece,"bottom")
builders.parent(main,0x23DC,ulbracepiece,umbracepiece,urbracepiece,"top")
builders.parent(main,0x23DD,llbracepiece,lmbracepiece,lrbracepiece,"bottom")
builders.dots(main,0x2026) -- ldots
builders.dots(main,0x22EE) -- vdots
builders.dots(main,0x22EF) -- cdots
builders.dots(main,0x22F1) -- ddots
builders.dots(main,0x22F0) -- udots
builders.jointwo(main,0x21A6,ps("maps to piece"),.15,0x02192) -- \mapstochar\rightarrow
local srl = ps("rule left piece")
local srm = ps("rule middle piece")
local srr = ps("rule right piece")
local drl = ps("double rule left piece")
local drm = ps("double rule middle piece")
local drr = ps("double rule right piece")
local sfl = ps("flat rule left piece")
local sfm = ps("flat rule middle piece")
local sfr = ps("flat rule right piece")
local mrl = ps("minus rule left piece")
local mrm = ps("minus rule middle piece")
local mrr = ps("minus rule right piece")
local dfl = ps("flat double rule left piece")
local dfm = ps("flat double rule middle piece")
local dfr = ps("flat double rule right piece")
local sal = ps("arrow left piece")
local sar = ps("arrow right piece")
local dal = ps("double arrow left piece")
local dar = ps("double arrow right piece")
local rad = ps("radical bar extender")
local frc = ps("fraction bar extender")
local antykwa = characters[srm]
if not antykwa then
sal = 0x02190 sar = 0x02192
dal = 0x021D0 dar = 0x021D2
srl = 0x0002D srr = 0x0002D
drl = 0x0003D drr = 0x0003D
sfl = 0x0002D srm = 0x0002D
dfl = 0x0003D drm = 0x0003D
end
if not characters[sfm] then
local csal = characters[sal] local sheight = csal.height local sdepth = csal.depth
local cdal = characters[dal] local dheight = cdal.height local ddepth = cdal.depth
local csfl = copytable(characters[srl]) characters[sfl] = csfl csfl.height = sheight csfl.depth = sdepth csfl.italic = nil
local csfm = copytable(characters[srm]) characters[sfm] = csfm csfm.height = sheight csfm.depth = sdepth csfm.italic = nil
local csfr = copytable(characters[srr]) characters[sfr] = csfr csfr.height = sheight csfr.depth = sdepth csfr.italic = nil
local cdfl = copytable(characters[drl]) characters[dfl] = cdfl cdfl.height = dheight cdfl.depth = ddepth cdfl.italic = nil
local cdfm = copytable(characters[drm]) characters[dfm] = cdfm cdfm.height = dheight cdfm.depth = ddepth cdfm.italic = nil
local cdfr = copytable(characters[drr]) characters[dfr] = cdfr cdfr.height = dheight cdfr.depth = ddepth cdfr.italic = nil
end
builders.jointwo(main,0x27F5,sal,joinrelfactor,srr)
builders.jointwo(main,0x27F6,srl,joinrelfactor,sar)
builders.jointwo(main,0x27F7,sal,joinrelfactor,sar)
builders.jointwo(main,0x27F8,dal,joinrelfactor,drr)
builders.jointwo(main,0x27F9,drl,joinrelfactor,dar)
builders.jointwo(main,0x27FA,dal,joinrelfactor,dar)
if antykwa then
builders.horibar(main,0x2212,mrm,mrl,mrr,0x2212,true,srm,srl,srr) -- minus
builders.horibar(main,0x203E,srm,srl,srr,0x2212) -- overbar underbar fraction (we take 90/91/92 too!)
builders.horibar(main,frc,srm,srl,srr,0x2212) -- fraction
builders.rootbar(main,rad,srm,srr,0x2212) -- radical
else
builders.horibar(main,0x2212,false,false,false,0x2212,true) -- minus
builders.horibar(main,0x203E,false,false,false,0x02212)
end
local ffactor = antykwa and 1 or 1 -- check MS
local mfactor = antykwa and 1 or .8
local lfactor = antykwa and 1 or .8
builders.extension(main,0x2190,sal,sfm,sfr,ffactor,mfactor,lfactor) -- \leftarrow
builders.extension(main,0x2192,sfl,sfm,sar,ffactor,mfactor,lfactor) -- \rightarrow
builders.extension(main,0x27F5,sal,sfm,sfr,ffactor,mfactor,lfactor)
builders.extension(main,0x27F6,sfl,sfm,sar,ffactor,mfactor,lfactor)
builders.extension(main,0x27F7,sal,sfm,sar,ffactor,mfactor,lfactor)
builders.extension(main,0x27F8,dal,dfm,dfr,ffactor,mfactor,lfactor)
builders.extension(main,0x27F9,dfl,dfm,dar,ffactor,mfactor,lfactor)
builders.extension(main,0x27FA,dal,dfm,dar,ffactor,mfactor,lfactor)
local tfactor = antykwa and -0.8 or -1.1 -- move up check MS
local bfactor = antykwa and 0.1 or 0.2
local tfactor = antykwa and -0.6 or -.6 -- move up check MS
local bfactor = antykwa and 0.1 or 0.2
local left = characters[0x27F5]
local right = characters[0x27F6]
local both = characters[0x27F7]
local height = max(left.height or 0,right.height or 0,both.height or 0)
local depth = max(left.depth or 0,right.depth or 0,both.depth or 0)
left .height = height ; left .depth = depth
right.height = height ; right.depth = depth
both .height = height ; both .depth = depth
-- top and bottom arrows : a real mess but now we're drawn into patching it; why are these
-- small ones shifted in the bbox; we could do a better job on top and bottom anchors; we
-- also could use the bbox as in opentype (\wideoverleftarrow etc)
local rightarrow = characters[0x20D7]
local leftarrow = copytable(rightarrow)
local doublearrow = copytable(rightarrow)
local width = rightarrow.width
local height = rightarrow.height
-- top
characters[0x20D6] = leftarrow
characters[0x20E1] = doublearrow
rightarrow.xoffset = -.2*width
leftarrow.commands = {
{ "offset", width, 0, 0x20D7, -1, 1 }
}
doublearrow.commands = {
{ "offset", antykwa and .9*width or width, 0, 0x20D7, -1, 1 },
{ "offset", antykwa and .1*width or 0, 0, 0x20D7, 1, 1 }
}
-- bottom
local rightarrow = copytable(rightarrow)
local leftarrow = copytable(leftarrow)
local doublearrow = copytable(doublearrow)
characters[0x20EE] = leftarrow
characters[0x20EF] = rightarrow
characters[0x034D] = doublearrow
local bheight = .40*height -- can be tuned to match top
local yoffset = -.65*height -- can be tuned to match top
leftarrow .height = bheight
rightarrow .height = bheight
doublearrow.height = bheight
rightarrow .yoffset = yoffset
leftarrow .yoffset = yoffset
doublearrow.yoffset = yoffset
leftarrow.commands = {
{ "offset", width, 0, 0x20D7, -1, 1 }
}
doublearrow.commands = {
{ "offset", antykwa and .9*width or width, 0, 0x20D7, -1, 1 },
{ "offset", antykwa and .1*width or 0, 0, 0x20D7, 1, 1 }
}
-- extensibles
local tl = copytable(left) ; characters[fake20D6] = tl ; characters[0x20D6].next = fake20D6 -- over
local tm = copytable(right) ; characters[fake20D7] = tm ; characters[0x20D7].next = fake20D7
local tr = copytable(both) ; characters[fake20E1] = tr ; characters[0x20E1].next = fake20E1
tl.inneryoffset = tfactor*height ; tl.innerlocation = "top" ; tl.next = nil ; tl.italic = nil
tm.inneryoffset = tfactor*height ; tm.innerlocation = "top" ; tm.next = nil ; tm.italic = nil
tr.inneryoffset = tfactor*height ; tr.innerlocation = "top" ; tr.next = nil ; tr.italic = nil
local bl = copytable(left) ; characters[fake20EE] = bl ; characters[0x20EE].next = fake20EE -- under
local bm = copytable(right) ; characters[fake20EF] = bm ; characters[0x20EF].next = fake20EF
local br = copytable(both) ; characters[fake034D] = br ; characters[0x034D].next = fake034D
bl.inneryoffset = bfactor*height bl.innerlocation = "bottom" ; bl.next = nil ; bl.italic = nil
bm.inneryoffset = bfactor*height bm.innerlocation = "bottom" ; bm.next = nil ; bm.italic = nil
br.inneryoffset = bfactor*height br.innerlocation = "bottom" ; br.next = nil ; br.italic = nil
--
local tfactor = antykwa and -15 or -15
local bfactor = antykwa and 1 or 1
local t = copytable(characters[0x203E]) characters[0x0305] = t t.inneryoffset = tfactor*t.height t.innerlocation = "top" t.next = nil t.italic = nil
local t = copytable(characters[0x203E]) characters[0x0332] = t t.inneryoffset = bfactor*t.height t.innerlocation = "bottom" t.next = nil t.italic = nil
builders.jointwo(main,0x2016,0x007C,0.20,0x007C)
builders.jointwo(main,0x2980,0x007C,0.20,0x007C,0.20,0x007C)
characters[0x007C].extensible = true
characters[0x007C].varianttemplate = 0x5B
characters[0x2016].extensible = true
characters[0x2016].varianttemplate = 0x5B
characters[0x2980].extensible = true
characters[0x2980].varianttemplate = 0x5B
-- 21CB leftrightharpoon
-- 21CC rightleftharpoon
builders.stack(main,0x2259,0x0003D,3,0x02227) -- \buildrel\wedge\over=
builders.jointwo(main,0x22C8,0x022B3,joinrelfactor,0x022B2) -- \mathrel\triangleright\joinrel\mathrel\triangleleft (4 looks better than 3)
builders.jointwo(main,0x22A7,0x0007C,joinrelfactor,0x0003D) -- \mathrel|\joinrel=
builders.overlaytwo(main,0x2260,0x00338,notshiftfactor,0x0003D) -- \not\equal
builders.overlaytwo(main,0x2284,0x00338,notshiftfactor,0x02282) -- \not\subset
builders.overlaytwo(main,0x2285,0x00338,notshiftfactor,0x02283) -- \not\supset
builders.overlaytwo(main,0x2209,0x00338,notshiftfactor,0x02208) -- \not\in
-- builders.jointwo (main,0x2254,0x03A,0,0x03D) -- :=
-- builders.jointhree(main,0x2A74,0x03A,0,0x03A,0,0x03D) -- ::=
-- builders.jointwo (main,0x2A75,0x03D,0,0x03D) -- ==
builders.repeated(main,0x222B,0x222B,1,1/2)
builders.repeated(main,0x222C,0x222B,2,1/2)
builders.repeated(main,0x222D,0x222B,3,1/2)
characters[0x02B9] = characters[0x2032] -- we're nice
-- some things are done automatically:
-- add primes
-- add equals and alike
end
}
}
}
|
