-- This font is under active development so we don't want to tweek it too much
-- before all issues are sorted out.

local common  = fonts.goodies.load("common-math.lfg")
local presets = common.mathematics.tweaks.presets

return {
    name = "erewhon-math",
    version = "1.00",
    comment = "Goodies that complement erewhon math.",
    author = "Hans Hagen & Mikael Sundqvist",
    copyright = "ConTeXt development team",
    mathematics = {
        parameters = {
            AccentBaseDepth                   =  60,
            DelimiterPercent                  =  85,
            DelimiterShortfall                = 400,
            DelimiterDisplayPercent           =  90,
            DelimiterDisplayShortfall         = 400,
            SubscriptShiftDown                = 200, -- 220 in font
            SuperscriptShiftUp                = 400, -- 400 in font
            SubscriptShiftDownWithSuperscript = "1.2*SubscriptShiftDown", -- unclear original value, trial and error
            PrimeShiftUp                      = "1*SuperscriptShiftUp",
            PrimeShiftUpCramped               = "1*SuperscriptShiftUp",
            PrimeBaselineDropMax              = "0.5*SuperscriptBaselineDropMax",
            RadicalDisplayStyleVerticalGap    = "RadicalVerticalGap", --170, 69
            -- RadicalDisplayStyleVerticalGap    = 55,--"RadicalVerticalGap", --170, 69
            -- RadicalVerticalGap                = 55,
        },
        tweaks = {
            aftercopying = {
                {
                    tweak    = "fontname",
                    expected = "Erewhon-Math",
                    abort    = true,
                },
                {
                    tweak  = "fixprimes",
                    factor = 0.94  ,
                    fake   = 0.85, -- replace multiples with this width proportion
                },
                {
                    tweak = "addmirrors",
                },
                {
                    tweak = "addcomposites",
                },
             -- {
             --     tweak   = "dimensions",
             --     comment = "no longer needed",
             --     list    = {
             --         ["0x222B.variants.*"] = { axis = .15 },
             --     },
             -- },
                {
                    tweak = "fixintegrals",
                },
                presets.scripttocalligraphic { },
                presets.rsfstoscript         { },
                presets.rsfsuprighttoscript  { },
                presets.moderntocalligraphic { },
                presets.eulertocalligraphic  { },
                presets.xitsarabic           { rscale  = 0.90 },
                presets.fallbacks            { },
                presets.moveitalics          { correct = true },
                presets.moveitalics          { correct = true, letters = true },
                presets.moveintegrals        { factor = 1.5 },
                presets.wipeitalics          { },
                {
                    tweak = "checkaccents",
                },
                {
                    tweak = "kerns",
                    list  = {
                        [0x002F]                = { topleft  = -0.15, bottomright = -0.15 },
                        ["0x7D.parts.top"]      = { topright = -0.15,                     }, -- right brace top
                        ["0x7D.parts.bottom"]   = {                   bottomright = -0.15 }, -- right brace bottom
                        ["0x7D.variants.*"]     = { topright = -0.05, bottomright = -0.05 }, -- right brace variants
                        ["0x29.parts.top"]      = { topright = -0.1,                      }, -- right parenthesis top
                        ["0x29.parts.bottom"]   = {                   bottomright = -0.1  }, -- right parenthesis bottom
                        ["0x29.variants.*"]     = { topright = -0.1,  bottomright = -0.1  }, -- right parenthesis variants
                        ["0x221A.parts.top"]    = { topright =  0.2,                      }, -- right radical top
                        ["0x221A.parts.bottom"] = {                   bottomright =  0.2  }, -- right radical bottom
                        ["0x221A.variants.*"]   = { topright =  0.2,  bottomright =  0.2  }, -- right radical variants
                        [0x27E9]                = { topright = -0.1,  bottomright = -0.1  }, -- angle
                        ["0x27E9.variants.*"]   = { topright = -0.2,  bottomright = -0.2  },
                        [0x27EB]                = { topright = -0.1,  bottomright = -0.1  },
                        ["0x27EB.variants.*"]   = { topright = -0.2,  bottomright = -0.2  },
                        [0x00393]               = {                   bottomright = -0.3  }, -- upright Gamma
                    },
                },
                {
                    tweak = "flattenaccents",
                },
                {
                    tweak   = "radicaldegreeanchors",
                    list = {
                        ["0x221A.parts.bottom"] = { location = "left", hfactor  = .1, vfactor  = 1.025 },
                    }
                },
                {
                    tweak = "checkspacing",
                },
                {
                    tweak = "addscripts",
                },
                {
                    tweak = "accentdimensions",
                },
                {
                    tweak = "addrules",
                },
{
    tweak    = "replacerules",
    -- minus = {
    --     height      = 0.188,
    --     yoffset     = 0.812,
    --     leftoffset  = 0.2,
    --     rightoffset = 0.2,
    -- },
    fraction = {
        height  = .188,
        yoffset = .812,
    },
    radical = {
        height      = .188,
        yoffset     = .812,
        leftoffset  = 0.12,
        rightoffset = 0.12,
    },
    stacker = {
        height  = .188,
        yoffset = .812,
    },
},
                {
                    tweak = "addactuarian",
                },
                {
                    tweak = "addequals",
                },
                {
                    tweak = "addfourier",
                    variant = 2,
                },
                {
                    tweak = "addprimed",
                },
                {
                    tweak = "setoptions",
                },
            },
        },
        bigslots = {
            1, 2, 3, 4
        },
    },

}
