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Fix leaning marks of turned r (#2133).

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This commit is contained in:
be5invis 2023-12-29 03:40:06 -08:00
parent 9bc1f33ac0
commit baa5840877
4 changed files with 71 additions and 26 deletions
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1
changes/28.0.3.md
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@ -5,3 +5,4 @@
- LATIN SMALL LETTER P WITH STROKE THROUGH DESCENDER (`U+A751`) (#1797).
* Remove tailless variants for Latin Iota (`U+0196`, `U+0269`) and Cyrillic Iota (`U+A646`, `U+A647`).
* Fix slash ligations when `frac` feature is enabled (#2130).
* Fix leaning marks of turned `r` (#2133).

18
packages/font-glyphs/src/common/derivatives.ptl
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@ -171,6 +171,24 @@ glyph-block Common-Derivatives : begin
if fnOverride [fnOverride df] {.baseAnchors {.}}
include mx
glyph-block-export SwapMarks
define [SwapMarks k1 k2] : glyph-proc
# Swap markAnchors
local m1 currentGlyph.markAnchors.(k1)
local m2 currentGlyph.markAnchors.(k2)
currentGlyph.deleteMarkAnchor k1
currentGlyph.deleteMarkAnchor k2
if m1 : set currentGlyph.markAnchors.(k2) m1
if m2 : set currentGlyph.markAnchors.(k1) m2
# Swap baseAnchors
local b1 currentGlyph.baseAnchors.(k1)
local b2 currentGlyph.baseAnchors.(k2)
currentGlyph.deleteBaseAnchor k1
currentGlyph.deleteBaseAnchor k2
if b1 : set currentGlyph.baseAnchors.(k2) b1
if b2 : set currentGlyph.baseAnchors.(k1) b2
# Dual derivatives
glyph-block-export HCombine
define [HCombine newid unicode id1 id2 spacing] : begin

76
packages/font-glyphs/src/letter/latin/lower-r.ptl
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@ -23,7 +23,7 @@ glyph-block Letter-Latin-Lower-R : begin
local rCornerHooked 5
local rCornerHookedSerifed 6
define [RDim df mode _strokeBar _stroke] : begin
define [RDim df mode _strokeBar _stroke] : namespace
local strokeBar : fallback _strokeBar Stroke
local stroke : fallback _stroke Stroke
local strokeA : mix strokeBar stroke 0.5
@ -36,13 +36,13 @@ glyph-block Letter-Latin-Lower-R : begin
[Just rCornerHookedSerifed] { (4 / 3) (2 / 3) (1 / 4) (1 / 3) 2.35 }
[Just rEarless] { 1 1 0 0 2.35 }
local xBar : match mode
export : local xBar : match mode
[Just rNarrowSerifed] : df.middle + [HSwToV : 0.5 * strokeBar] - RBalance * rBalanceMultiplier
__ : SB + RBalance * rBalanceMultiplier + [HSwToV strokeBar]
local rSerifX : xBar - [HSwToV : 0.5 * strokeBar]
local rSerifLeftJut : SideJut + RBalance * (0.3 + rSerifLeftExtender)
local rSerifRightJut : rSerifLeftJut * 1.20
local [rBottomSerif y] : glyph-proc
export : local [rBottomSerif y] : glyph-proc
include : tagged 'serifLB' : union
HSerif.lb rSerifX y (rSerifLeftJut + (strokeBar / 2) * HVContrast)
HSerif.rb rSerifX y (rSerifRightJut + (strokeBar / 2) * HVContrast)
@ -50,11 +50,11 @@ glyph-block Letter-Latin-Lower-R : begin
set-base-anchor 'palatalHookAttach' xAtt y
set-base-anchor 'palatalHookPos' xAtt y
local [rTopSerif y] : tagged 'serifLT'
export : local [rTopSerif y] : tagged 'serifLT'
HSerif.lt rSerifX y (rSerifLeftJut + (strokeBar / 2) * HVContrast)
local fine ShoulderFine
local rHookX : df.rightSB + RBalance2 * rBalanceMultiplier - (OX - O)
local xArchMiddle : match mode
export : local fine ShoulderFine
export : local rHookX : df.rightSB + RBalance2 * rBalanceMultiplier - (OX - O)
export : local xArchMiddle : match mode
[Just rStraight] : mix (xBar - fine) rHookX (0.54 + 2 * TanSlope * strokeBar / Width)
[Just rSerifed] : mix (xBar - fine) rHookX (0.59 + 2 * TanSlope * strokeBar / Width)
[Just rNarrow] : mix df.width rHookX : Math.max 1.01 (5 / 4 * [mix 1 dfR.div 2])
@ -67,13 +67,14 @@ glyph-block Letter-Latin-Lower-R : begin
0.65 + 0.25 * strokeA / Width + 4 * TanSlope * strokeA / Width
__ : 0.65 + 4 * TanSlope * strokeA / Width
local rmiddlein : [mix xBar (rHookX - [HSwToV : 1.05 * strokeA]) mixpin] - CorrectionOMidS
local skew : Math.max 0 : (xArchMiddle - rmiddlein) / stroke - TanSlope
local rHookY : RHook * rHookMultiplier + stroke * rHookSwMultiplier
local rHookXN : match mode
export : local skew : Math.max 0 : (xArchMiddle - rmiddlein) / stroke - TanSlope
export : local rHookY : RHook * rHookMultiplier + stroke * rHookSwMultiplier
export : local rHookXN : match mode
[Just rNarrowSerifed] : mix df.width rHookX df.div
[Just rNarrow] : xArchMiddle + 0.1
__ rHookX
local [setMarks doTopSerif top bottom] : glyph-proc
export : define [setMarks doTopSerif top bottom] : glyph-proc
include : LeaningAnchor.Below.VBar.r xBar
include : LeaningAnchor.Above.Hook
mix df.leftSB (xBar - [HSwToV Stroke]) : if doTopSerif 0.5 1
@ -84,7 +85,16 @@ glyph-block Letter-Latin-Lower-R : begin
currentGlyph.copyBaseAnchorIfAbsent 'leaningAbove' 'above'
currentGlyph.copyBaseAnchorIfAbsent 'leaningBelow' 'below'
return : object xBar rBottomSerif rTopSerif fine xArchMiddle skew rHookX rHookXN rHookY hookSuperness setMarks
export : define [setTurnedMarks doTopSerif top bottom] : glyph-proc
include : LeaningAnchor.Above.VBar.l (df.width - xBar)
include : LeaningAnchor.Below.Hook
begin df.leftSB
df.width - [mix df.leftSB (xBar - [HSwToV Stroke]) : if doTopSerif 0.5 1]
set-base-anchor 'overlay' (df.width - (xBar - Stroke * 0.25)) [mix bottom top 0.5]
currentGlyph.copyBaseAnchorIfAbsent 'leaningAbove' 'above'
currentGlyph.copyBaseAnchorIfAbsent 'leaningBelow' 'below'
export hookSuperness
define [StandardShape df md doTopSerif doBottomSerif] : glyph-proc
define [object xBar rBottomSerif rTopSerif fine xArchMiddle skew rHookX rHookY hookSuperness] : RDim df md
@ -245,8 +255,8 @@ glyph-block Letter-Latin-Lower-R : begin
eject-contour 'serifLT'
include : FlipAround df.middle (XH / 2)
include : df.markSet.e
define [object xBar] : RDim df mode
define [object xBar setTurnedMarks] : RDim df mode
include : setTurnedMarks doTS XH 0
include : RetroflexHook.lExt (df.rightSB - xBar + df.leftSB) 0
create-glyph "rTurnLongLetRTail.\(suffix)" : glyph-proc
@ -254,31 +264,47 @@ glyph-block Letter-Latin-Lower-R : begin
eject-contour 'serifLT'
include : FlipAround df.middle (XH / 2)
include : df.markSet.b
define [object xBar] : RDim df mode
define [object xBar setTurnedMarks] : RDim df mode
include : setTurnedMarks doTS Ascender 0
include : RetroflexHook.lExt (df.rightSB - xBar + df.leftSB) 0
create-glyph "turnr.\(suffix)" : glyph-proc
include [refer-glyph "r.\(suffix)"] AS_BASE ALSO_METRICS
include : FlipAround df.middle (XH / 2)
include : df.markSet.e
define [object setTurnedMarks] : RDim df mode
include : setTurnedMarks doTS XH 0
create-glyph "turnrLongLeg.\(suffix)" : glyph-proc
include [refer-glyph "rLongLeg.\(suffix)"] AS_BASE ALSO_METRICS
include : FlipAround df.middle (XH / 2)
include : df.markSet.b
define [object setTurnedMarks] : RDim df mode
include : setTurnedMarks doTS Ascender 0
create-glyph "smallLetterTurnedRWithTail.\(suffix)" : glyph-proc
include [refer-glyph "rRTail.\(suffix)"] AS_BASE ALSO_METRICS
include : FlipAround df.middle (XH / 2)
include : df.markSet.b
define [object setTurnedMarks] : RDim df mode
include : setTurnedMarks doTS Ascender 0
select-variant 'r' 'r'
link-reduced-variant 'r/sansSerif' 'r' MathSansSerif
define [TurnRMarks k] : TurnMarks k
function [df] : return {.baseAnchors {.bottomRight {.x (df.rightSB - RBalance) .y 0}}}
turned 'turnr' 0x279 'r' HalfAdvance (XH / 2) [TurnRMarks 'e']
select-variant 'turnr' 0x279 (follow -- 'r')
CreateAccentedComposition 'rTildeOver' 0x1D72 'r' 'tildeOver'
turned 'turnrTildeOver' 0xAB68 'rTildeOver' HalfAdvance (XH / 2) [TurnRMarks 'e']
CreateAccentedComposition 'turnrTildeOver' 0xAB68 'turnr' 'tildeOver'
select-variant 'rLongLeg' 0x27C (follow -- 'r')
select-variant 'turnrLongLeg' 0x27A (follow -- 'r')
select-variant 'SInsular' 0xA784 (shapeFrom -- 'rCapLongLeg') (follow -- 'rRTail')
select-variant 'sInsular' 0xA785 (shapeFrom -- 'rLongLeg') (follow -- 'rRTail')
select-variant 'FInsular' 0xA77B (follow -- 'rRTail')
select-variant 'fInsular' 0xA77C (follow -- 'rRTail')
turned 'turnrLongLeg' 0x27A 'rLongLeg' HalfAdvance (XH / 2) [TurnRMarks 'b']
select-variant 'rRTail' 0x27D
turned 'smallLetterTurnedRWithTail' 0x2C79 'rRTail' HalfAdvance (XH / 2) : glyph-proc
local df : DivFrame (currentGlyph.advanceWidth / Width)
include : df.markSet.b
select-variant 'smallLetterTurnedRWithTail' 0x2C79 (follow -- 'rRTail')
select-variant 'rTurnRTail' 0x27B
select-variant 'rTurnLongLetRTail' 0x1DF08 (follow -- 'rTurnRTail')

2
packages/font-glyphs/src/meta/macros.ptl
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@ -165,7 +165,7 @@ define-macro glyph-block-import : syntax-rules
Common-Derivatives `[select-variant orthographic-italic orthographic-slanted
refer-glyph query-glyph alias turned HDual HCombine VDual VCombine derive-glyphs
derive-composites link-reduced-variant alias-reduced-variant HalfAdvance TurnMarks
derive-multi-part-glyphs DeriveMeshT]
SwapMarks derive-multi-part-glyphs DeriveMeshT]
CommonShapes `[no-shape tagged KnotAdj Rect SquareAt Ring RingAt DotAt RingStroke
RingStrokeAt DotStrokeAt CircleRing CircleRingAt CircleDotAt RoundStrokeTerminalAt