Thanks a lot.
Tomas
______________________________________________________________
> Od: t...@elvenkind.com
> Komu: mailing list for ConTeXt users <ntg-context@ntg.nl>
> Datum: 18.04.2009 10:12
> Předmět: Re: [NTG-context] Height of square root
>
>Tomas Kisela wrote:
>> Hi everybody,
>> > There's my issue:
>> If I switch a size of body font, the height of square root doesn't adapt
>> well for letters exceeding a baseline (in my example "y"). Here is my code:
>> > starttext
>> startformula > sqrt{x^2+y^2} sqrt{x^2+a^2}
>> stopformula
>> switchtobodyfont[17pt]
>> startformula > sqrt{x^2+y^2} sqrt{x^2+a^2}
>> stopformula
>> switchtobodyfont[23pt]
>> startformula > sqrt{x^2+y^2} sqrt{x^2+a^2}
>> stopformula
>> stoptext
>> > Do you have any ideas what's the problem and how can I fix it?
>
>There is a bug in math-dim.lua: the Umathradicalvgap parameters are not
>set up properly. Attached is an improved version. Hans, can you put the
>fix in the next beta?
>
>Best wishes,
>Taco
>
>
>
>if not modules then modules = { } end modules ['math-dim'] = {
> version = 1.001,
> comment = "companion to math-ini.tex",
> author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
> copyright = "PRAGMA ADE / ConTeXt Development Team",
> license = "see context related readme files"
>}
>
>-- Beware: only Taco really understands what these dimensions do so if you
>-- run into problems ...
>
>local abs, next = math.abs, next
>
>mathematics = mathematics or { }
>
>local defaults = {
> ['axis']={
> ['default']={ "AxisHeight", "axis_height" },
> },
> ['accent_base_height']={
> ['default']={ "AccentBaseHeight", "x_height" },
> },
> ['fraction_del_size']={
> ['default']={ "0", "delim2" },
> ['cramped_display_style']={ "0", "delim1" },
> ['display_style']={ "0", "delim1" },
> },
> ['fraction_denom_down']={
> ['default']={ "FractionDenominatorShiftDown", "denom2" },
> ['cramped_display_style']={
> "FractionDenominatorDisplayStyleShiftDown", "denom1" },
> ['display_style']={ "FractionDenominatorDisplayStyleShiftDown",
> "denom1" },
> },
> ['fraction_denom_vgap']={
> ['default']={ "FractionDenominatorGapMin", "default_rule_thickness" },
> ['cramped_display_style']={ "FractionDenominatorDisplayStyleGapMin",
> "3*default_rule_thickness" },
> ['display_style']={ "FractionDenominatorDisplayStyleGapMin",
> "3*default_rule_thickness" },
> },
> ['fraction_num_up']={
> ['default']={ "FractionNumeratorShiftUp", "num2" },
> ['cramped_display_style']={ "FractionNumeratorDisplayStyleShiftUp",
> "num1" },
> ['display_style']={ "FractionNumeratorDisplayStyleShiftUp", "num1" },
> },
> ['fraction_num_vgap']={
> ['default']={ "FractionNumeratorGapMin", "default_rule_thickness" },
> ['cramped_display_style']={ "FractionNumeratorDisplayStyleGapMin",
> "3*default_rule_thickness" },
> ['display_style']={ "FractionNumeratorDisplayStyleGapMin",
> "3*default_rule_thickness" },
> },
> ['fraction_rule']={
> ['default']={ "FractionRuleThickness", "default_rule_thickness" },
> },
> ['limit_above_bgap']={
> ['default']={ "UpperLimitBaselineRiseMin", "big_op_spacing3" },
> },
> ['limit_above_kern']={
> ['default']={ "0", "big_op_spacing5" },
> },
> ['limit_above_vgap']={
> ['default']={ "UpperLimitGapMin", "big_op_spacing1" },
> },
> ['limit_below_bgap']={
> ['default']={ "LowerLimitBaselineDropMin", "big_op_spacing4" },
> },
> ['limit_below_kern']={
> ['default']={ "0", "big_op_spacing5" },
> },
> ['limit_below_vgap']={
> ['default']={ "LowerLimitGapMin", "big_op_spacing2" },
> },
>
>--~ ['....']={
>--~ ['default']={ "DisplayOperatorMinHeight", "....." },
>--~ },
>
> ['overbar_kern']={
> ['default']={ "OverbarExtraAscender", "default_rule_thickness" },
> },
> ['overbar_rule']={
> ['default']={ "OverbarRuleThickness", "default_rule_thickness" },
> },
> ['overbar_vgap']={
> ['default']={ "OverbarVerticalGap", "3*default_rule_thickness" },
> },
> ['quad']={
> ['default']={ "font_size(f)", "math_quad" },
> },
> ['radical_kern']={
> ['default']={ "RadicalExtraAscender", "default_rule_thickness" },
> },
> ['radical_rule']={
> ['default']={ "RadicalRuleThickness", "<not set>" },
> },
> ['radical_vgap']={
> ['default']={ "RadicalVerticalGap",
> "default_rule_thickness+(abs(default_rule_thickness)/4)" },
> ['display_style']={ "RadicalDisplayStyleVerticalGap",
> "default_rule_thickness+(abs(math_x_height)/4)" },
> },
> ['space_after_script']={
> ['default']={ "SpaceAfterScript", "script_space" },
> },
> ['stack_denom_down']={
> ['default']={ "StackBottomShiftDown", "denom2" },
> ['cramped_display_style']={ "StackBottomDisplayStyleShiftDown",
> "denom1" },
> ['display_style']={ "StackBottomDisplayStyleShiftDown", "denom1" },
> },
> ['stack_num_up']={
> ['default']={ "StackTopShiftUp", "num3" },
> ['cramped_display_style']={ "StackTopDisplayStyleShiftUp", "num1" },
> ['display_style']={ "StackTopDisplayStyleShiftUp", "num1" },
> },
> ['stack_vgap']={
> ['default']={ "StackGapMin", "3*default_rule_thickness" },
> ['cramped_display_style']={ "StackDisplayStyleGapMin",
> "7*default_rule_thickness" },
> ['display_style']={ "StackDisplayStyleGapMin",
> "7*default_rule_thickness" },
> },
> ['sub_shift_down']={
> ['default']={ "SubscriptShiftDown", "sub1" },
> },
> ['sub_shift_drop']={
> ['default']={ "SubscriptBaselineDropMin", "sub_drop" },
> },
> ['sub_sup_shift_down']={
> ['default']={ "SubscriptShiftDown", "sub2" },
> },
> ['sub_top_max']={
> ['default']={ "SubscriptTopMax", "abs(math_x_height*4)/5" },
> },
> ['subsup_vgap']={
> ['default']={ "SubSuperscriptGapMin", "4*default_rule_thickness" },
> },
> ['sup_bottom_min']={
> ['default']={ "SuperscriptBottomMin", "abs(math_x_height)/4" },
> },
> ['sup_shift_drop']={
> ['default']={ "SuperscriptBaselineDropMax", "sup_drop" },
> },
> ['sup_shift_up']={
> ['cramped_display_style']={ "SuperscriptShiftUpCramped", "sup3" },
> ['cramped_script_script_style']={ "SuperscriptShiftUpCramped", "sup3"
> },
> ['cramped_script_style']={ "SuperscriptShiftUpCramped", "sup3" },
> ['cramped_text_style']={ "SuperscriptShiftUpCramped", "sup3" },
> ['display_style']={ "SuperscriptShiftUp", "sup1" },
> ['script_script_style']={ "SuperscriptShiftUp", "sup2" },
> ['script_style']={ "SuperscriptShiftUp", "sup2" },
> ['text_style']={ "SuperscriptShiftUp", "sup2" },
> },
> ['sup_sub_bottom_max']={
> ['default']={ "SuperscriptBottomMaxWithSubscript",
> "abs(math_x_height*4)/5" },
> },
> ['underbar_kern']={
> ['default']={ "UnderbarExtraDescender", "0" },
> },
> ['underbar_rule']={
> ['default']={ "UnderbarRuleThickness", "default_rule_thickness" },
> },
> ['underbar_vgap']={
> ['default']={ "UnderbarVerticalGap", "3*default_rule_thickness" },
> },
> ['connector_overlap_min']={
> ['default']={ "MinConnectorOverlap", "0.25*default_rule_thickness" },
> },
> ['over_delimiter_vgap']={
> ['default']={ "StretchStackGapBelowMin", "big_op_spacing1" },
> },
> ['over_delimiter_bgap']={
> ['default']={ "StretchStackTopShiftUp", "big_op_spacing3" },
> },
> ['under_delimiter_vgap']={
> ['default']={ "StretchStackGapAboveMin", "big_op_spacing2" },
> },
> ['under_delimiter_bgap']={
> ['default']={ "StretchStackBottomShiftDown", "big_op_spacing4" },
> },
>}
>
>local styles = {
> 'cramped_display_style',
> 'cramped_script_script_style',
> 'cramped_script_style',
> 'cramped_text_style',
> 'display_style',
> 'script_script_style',
> 'script_style',
> 'text_style',
>}
>
>for k, v in next, defaults do
> for _, s in next, styles do
> if not v[s] then
> v[s] = v.default
> end
> end
>end
>
>-- we cannot use a metatable because we do a copy (takes a bit more work)
>--
>-- local mt = { } setmetatable(defaults,mt)
>--
>-- mt.__index = function(t,s)
>-- texio.write_nl("GETTING " .. s)
>-- return t.default or t.text_style or 0
>-- end
>
>function mathematics.dimensions(dimens)
> if dimens.SpaceAfterScript then
> return { }, table.fastcopy(dimens)
> elseif dimens.AxisHeight or dimens.axis_height then
> local t = { }
> local math_x_height = dimens.x_height or 10*65526
> local default_rule_thickness = dimens.FractionDenominatorGapMin or
> dimens.default_rule_thickness or 0.4*65526
> dimens["0"] = 0
> dimens["0.25*default_rule_thickness"] = default_rule_thickness/4
> dimens["3*default_rule_thickness"] = 3*default_rule_thickness
> dimens["4*default_rule_thickness"] = 4*default_rule_thickness
> dimens["7*default_rule_thickness"] = 7*default_rule_thickness
> dimens["abs(math_x_height*4)/5"] = abs(math_x_height * 4) / 5
> dimens["default_rule_thickness+(abs(default_rule_thickness)/4)"] =
> default_rule_thickness+(abs(default_rule_thickness)/4)
> dimens["default_rule_thickness+(abs(math_x_height)/4)"] =
> default_rule_thickness+(abs(math_x_height)/4)
> dimens["abs(math_x_height)/4"] = abs(math_x_height)/4
> dimens["abs(math_x_height*4)/5"] = abs(math_x_height*4)/5
> dimens["<not set>"] = false
> dimens["script_space"] = false -- at macro level
> for variable, styles in next, defaults do
> local tt = { }
> for style, default in next, styles do
> local one, two = default[1], default[2]
> local value = dimens[one]
> if value then
> tt[style] = value
> else
> value = dimens[two]
> if value == false then
> tt[style] = nil
> else
> tt[style] = value or 0
> end
> end
> end
> t[variable] = tt
> end
> local d = {
> AxisHeight = t . axis
> . text_style,
> AccentBaseHeight = t .
> accent_base_height . text_style,
> FractionDenominatorDisplayStyleGapMin = t .
> fraction_denom_vgap . display_style,
> FractionDenominatorDisplayStyleShiftDown = t .
> fraction_denom_down . display_style,
> FractionDenominatorGapMin = t .
> fraction_denom_vgap . text_style,
> FractionDenominatorShiftDown = t .
> fraction_denom_down . text_style,
> FractionNumeratorDisplayStyleGapMin = t .
> fraction_num_vgap . display_style,
> FractionNumeratorDisplayStyleShiftUp = t . fraction_num_up
> . display_style,
> FractionNumeratorGapMin = t .
> fraction_num_vgap . text_style,
> FractionNumeratorShiftUp = t . fraction_num_up
> . text_style,
> FractionRuleThickness = t . fraction_rule
> . text_style,
> LowerLimitBaselineDropMin = t . limit_below_bgap
> . text_style,
> LowerLimitGapMin = t . limit_below_vgap
> . text_style,
> OverbarExtraAscender = t . overbar_kern
> . text_style,
> OverbarRuleThickness = t . overbar_rule
> . text_style,
> OverbarVerticalGap = t . overbar_vgap
> . text_style,
> RadicalDisplayStyleVerticalGap = t . radical_vgap
> . display_style,
> RadicalExtraAscender = t . radical_kern
> . text_style,
> RadicalRuleThickness = t . radical_rule
> . text_style,
> RadicalVerticalGap = t . radical_vgap
> . text_style,
> SpaceAfterScript = t .
> space_after_script . text_style,
> StackBottomDisplayStyleShiftDown = t . stack_denom_down
> . display_style,
> StackBottomShiftDown = t . stack_denom_down
> . text_style,
> StackDisplayStyleGapMin = t . stack_vgap
> . display_style,
> StackGapMin = t . stack_vgap
> . text_style,
> StackTopDisplayStyleShiftUp = t . stack_num_up
> . display_style,
> StackTopShiftUp = t . stack_num_up
> . text_style,
> SubscriptBaselineDropMin = t . sub_shift_drop
> . text_style,
> SubscriptShiftDown = t . sub_shift_down
> . text_style,
> SubscriptTopMax = t . sub_top_max
> . text_style,
> SubSuperscriptGapMin = t . subsup_vgap
> . text_style,
> SuperscriptBaselineDropMax = t . sup_shift_drop
> . text_style,
> SuperscriptBottomMaxWithSubscript = t .
> sup_sub_bottom_max . text_style,
> SuperscriptBottomMin = t . sup_bottom_min
> . text_style,
> SuperscriptShiftUp = t . sup_shift_up
> . text_style,
> SuperscriptShiftUpCramped = t . sup_shift_up
> . cramped_text_style,
> UnderbarExtraDescender = t . underbar_kern
> . text_style,
> UnderbarRuleThickness = t . underbar_rule
> . text_style,
> UnderbarVerticalGap = t . underbar_vgap
> . text_style,
> UpperLimitBaselineRiseMin = t . limit_above_bgap
> . text_style,
> UpperLimitGapMin = t . limit_above_vgap
> . text_style,
> MinConnectorOverlap = t .
> connector_overlap_min . text_style,
> StretchStackGapBelowMin = t .
> over_delimiter_vgap . text_style,
> StretchStackTopShiftUp = t .
> over_delimiter_bgap . text_style,
> StretchStackGapAboveMin = t .
> under_delimiter_vgap . text_style,
> StretchStackBottomShiftDown = t .
> under_delimiter_bgap . text_style,
> }
> d.AccentBaseHeight = 0
>--~ texio.write_nl(table.serialize(d))
> return t, d -- this might change
> else
> return { }, { }
> end
>end
>
>___________________________________________________________________________________
>If your question is of interest to others as well, please add an entry to the
>Wiki!
>
>maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
>webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
>archive : https://foundry.supelec.fr/projects/contextrev/
>wiki : http://contextgarden.net
>___________________________________________________________________________________
>
>
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
