diff options
Diffstat (limited to 'tex/context/base/mkxl/font-imp-quality.lmt')
| -rw-r--r-- | tex/context/base/mkxl/font-imp-quality.lmt | 99 |
1 files changed, 96 insertions, 3 deletions
diff --git a/tex/context/base/mkxl/font-imp-quality.lmt b/tex/context/base/mkxl/font-imp-quality.lmt index 93ec1b653..9c57613ee 100644 --- a/tex/context/base/mkxl/font-imp-quality.lmt +++ b/tex/context/base/mkxl/font-imp-quality.lmt @@ -124,6 +124,9 @@ vectors['default'] = { vectors['quality'] = vectors['default'] -- metatable ? +-- Compression is new and used for a math experiment. Musical timestamp(s): November +-- 2022, a cluster of live performances: RPWL (5), PT (7, yes!) and xPropaganda (10). + local function initialize(tfmdata,value) if value then local class, vector = get_class_and_vector(tfmdata,value,"expansions") @@ -159,9 +162,23 @@ local function initialize(tfmdata,value) end end end - if v and v ~= 0 then - chr.expansion = v*factor - else -- can be option + -- So, factor influences all shapes but we now obey zero when set! + if v then + if type(v) == "table" then + local e = v[1] + local c = v[2] or 0 + if e ~= 0 then + chr.expansion = e*factor + end + if c ~= 0 then + chr.compression = c*factor + end + elseif v == 0 then + -- chr.expansion = 0 + else + chr.expansion = v*factor + end + elseif factor ~= 1 then -- test is new chr.expansion = factor end end @@ -194,6 +211,82 @@ implement { actions = function(class,settings) getparameters(classes,class,'preset',settings) end } +-- special version for math 7/11/22 + +classes.math = { + stretch = 2, + shrink = 2, + step = .5, + vector = 'math', + factor = 1, +} + +vectors.math = { + [0x002B] = { 4, 0 }, -- + + [0x2212] = { 4, 0 }, -- - + [0x003C] = { 8, 0 }, -- < + [0x003D] = { 8, 0 }, -- = + [0x003E] = { 8, 0 }, -- > + [0x002F] = { 2, 0 }, -- / + [0x0028] = { 2, 0 }, -- ( + [0x0029] = { 2, 0 }, -- ) + [0x005B] = { 2, 0 }, -- [ + [0x005D] = { 2, 0 }, -- ] +} + +local function initialize(tfmdata,value) + if value then + local class, vector = get_class_and_vector(tfmdata,value,"expansions") + if class then + if vector then + local stretch = class.stretch or 0 + local shrink = class.shrink or 0 + local step = class.step or 0 + local factor = class.factor or 1 + if trace_expansion then + report_expansions("setting class %a, vector %a, factor %a, stretch %a, shrink %a, step %a", + value,class.vector,factor,stretch,shrink,step) + end + tfmdata.parameters.expansion = { + stretch = 10 * stretch, + shrink = 10 * shrink, + step = 10 * step, + factor = factor, + } + local characters = tfmdata.characters + for u, v in next, vector do + local chr = characters[u] + if type(v) == "table" then + local e = v[1] + local c = v[2] or 0 + if e ~= 0 then + chr.expansion = e*factor + end + if c ~= 0 then + chr.compression = c*factor + end + elseif v ~= 0 then + chr.expansion = v*factor + end + end + elseif trace_expansion then + report_expansions("unknown vector %a in class %a",class.vector,value) + end + elseif trace_expansion then + report_expansions("unknown class %a",value) + end + end +end + +registerotffeature { + name = "mathexpansion", + description = "apply hz optimization to math", + initializers = { + base = initialize, + node = initialize, + } +} + -- -- -- -- -- -- -- protrusion -- -- -- -- -- -- |