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Optimize glyph of Latin Upper Lambda with Stroke. (#2775)

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John McWilliams 2025-05-19 20:07:58 -04:00 • committed by GitHub
parent 6a03c478fe
commit 10a21041b1
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4 changed files with 44 additions and 23 deletions
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33
packages/font-glyphs/src/letter/latin/upper-y.ptl
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@ -42,24 +42,26 @@ glyph-block Letter-Latin-Upper-Y : begin
HalfXStrand bodyType SLAB RightSB top Middle cross 0.1 0.4 0.28
include : tagged 'strokeVMid' : VBar.m Middle bot (cross + HalfStroke)
set-base-anchor 'overlay' Middle cross
set-base-anchor 'overlayOnExtension' Middle
[mix (bot + [if (slabType === SLAB-NONE || slabType === SLAB-BASE) 0 Stroke]) cross 0.5] + (Stroke - OverlayStroke) / 2
define [YenOverlayShape slabType] : glyph-proc
define { ks bot } : match slabType
([Just SLAB-ALL] || [Just SLAB-BASE]) { 0.25 Stroke }
otherwise { 0 0 }
include : HOverlayBar SB RightSB ([mix bot [YCrossPos CAP 0] 0.5] - OverlayStroke * ks)
include : HOverlayBar SB RightSB [mix bot [YCrossPos CAP 0] 1.0]
include : HOverlayBar SB RightSB [mix bot [YCrossPos CAP 0] 1.0]
define [YHookLeftHookedStroke top bot cross] : dispiro
widths.lhs
straight.right.start (SB - TailX / 3) (top - Stroke - O)
straight.right.start (SB - TailX / 3) (top - O - Stroke)
g4 (SB + TailX / 3) (top - TailY) [widths.lhs : AdviceStroke 2.75]
quadControls 0.55 0.7 32 unimportant
g4 (Middle - [HSwToV HalfStroke]) cross [widths.lhs : AdviceStroke 3.5]
define [YHookRightHookedStroke top bot cross] : dispiro
widths.rhs
straight.left.start (RightSB + TailX / 3) (top - Stroke - O)
straight.left.start (RightSB + TailX / 3) (top - O - Stroke)
g4 (RightSB - TailX / 3) (top - TailY) [widths.rhs : AdviceStroke 2.75]
quadControls 0.55 0.7 32 unimportant
g4 (Middle + [HSwToV HalfStroke]) cross [widths.rhs : AdviceStroke 3.5]
@ -71,7 +73,7 @@ glyph-block Letter-Latin-Upper-Y : begin
define [UpsilonHookedSymbolShape] : with-params [top bot [cross : YCrossPos top bot]] : glyph-proc
include : VBar.m Middle bot (cross + HalfStroke)
include : YHookLeftHookedStroke top bot cross
include : YHookLeftHookedStroke top bot cross
include : YHookRightHookedStroke top bot cross
define YConfig : object
@ -92,8 +94,7 @@ glyph-block Letter-Latin-Upper-Y : begin
create-glyph "grek/Upsilon.\(suffix)" : glyph-proc
include [refer-glyph "Y.\(suffix)"] AS_BASE ALSO_METRICS
include : SetGrekUpperTonos
if (slabType === SLAB-NONE || slabType === SLAB-BASE) OX (OX - SideJut)
include : SetGrekUpperTonos (OX - [if (slabType === SLAB-NONE || slabType === SLAB-BASE) 0 SideJut])
create-glyph "smcpY.\(suffix)" : glyph-proc
include : MarkSet.e
@ -129,10 +130,7 @@ glyph-block Letter-Latin-Upper-Y : begin
link-reduced-variant 'Y/sansSerif' 'Y' MathSansSerif
select-variant 'smcpY' 0x28F (follow -- 'Y')
select-variant 'YHookTop' 0x1B3 (follow -- 'Y')
select-variant 'Y/LambdaBase' (shapeFrom -- 'Y')
CreateAccentedComposition 'YBar/LambdaBase' null 'Y/LambdaBase' 'barOver'
CreateTurnedLetter 'turnY/sansSerif' 0x2144 'Y/sansSerif' HalfAdvance (CAP / 2)
CreateAccentedComposition 'YStrokeBottom' null 'Y' 'barOverOnExtension'
select-variant 'grek/Upsilon' 0x3A5 (follow -- 'Y')
link-reduced-variant 'grek/Upsilon/sansSerif' 'grek/Upsilon' MathSansSerif (follow -- 'Y/sansSerif')
@ -143,18 +141,19 @@ glyph-block Letter-Latin-Upper-Y : begin
CreateAccentedComposition 'cyrl/Uo' 0x4B0 'cyrl/Ue' 'barOver'
CreateAccentedComposition 'cyrl/uo' 0x4B1 'cyrl/ue' 'barOver'
create-glyph 'YStroke/Overlay' : HOverlayBar ([mix 0 SB 0.5]) ([mix Width RightSB 0.5]) [mix 0 CAP 0.75]
create-glyph 'YStroke/Overlay' : HOverlayBar [mix 0 SB 0.5] [mix Width RightSB 0.5] [mix 0 CAP 0.75]
derive-composites 'YStroke' 0x24E 'Y' 'YStroke/Overlay'
CreateTurnedLetter 'latn/Lambda' 0xA7DA 'Y/LambdaBase' HalfAdvance (CAP / 2)
CreateTurnedLetter 'latn/LambdaStroke' 0xA7DC 'YBar/LambdaBase' HalfAdvance (CAP / 2)
CreateTurnedLetter 'latn/Lambda' 0xA7DA 'Y' HalfAdvance (CAP / 2)
CreateTurnedLetter 'latn/LambdaStroke' 0xA7DC 'YStrokeBottom' HalfAdvance (CAP / 2)
CreateTurnedLetter 'turnY/sansSerif' 0x2144 'Y/sansSerif' HalfAdvance (CAP / 2)
select-variant 'currency/yenSign' 0xA5 (follow -- 'Y')
# Blackboard
glyph-block-import Letter-Blackboard : BBS BBD
create-glyph 'mathbb/Y' 0x1D550 : glyph-proc
local yCross : CAP * 0.4
local yCross : YCrossPos CAP 0
include : MarkSet.capital
include : HBar.t SB (SB + BBD) CAP BBS
@ -162,15 +161,15 @@ glyph-block Letter-Latin-Upper-Y : begin
Rect CAP 0 (-Width) (2 * Width)
union
difference
ExtLineCenter 1 BBS SB CAP (Middle - BBD / 2) yCross
ExtLineCenter 1 BBS SB CAP (Middle - BBD / 2) yCross
Rect CAP 0 (Middle - BBD / 2 + [HSwToV : 0.5 * BBS]) (Width * 2)
difference
ExtLineCenter 1 BBS (SB + BBD) CAP (Middle + BBD / 2) yCross
ExtLineCenter 1 BBS (SB + BBD) CAP (Middle + BBD / 2) yCross
Rect CAP 0 (Middle + BBD / 2 + [HSwToV : 0.5 * BBS]) (Width * 2)
include : intersection
Rect CAP yCross (-Width) (2 * Width)
ExtLineCenter 1 BBS RightSB CAP (Middle + BBD / 2) yCross
ExtLineCenter 1 BBS RightSB CAP (Middle + BBD / 2) yCross
include : HBar.b (Middle - BBD / 2) (Middle + BBD / 2) 0 BBS
include : union

5
packages/font-glyphs/src/marks/overlay.ptl
View file

@ -99,6 +99,11 @@ glyph-block Mark-Overlay : begin
include : HOverlayBar (markMiddle - LongJut * 0.75) (markMiddle + LongJut * 0.75) (XH / 2 + 0.5 * gap)
include : HOverlayBar (markMiddle - LongJut * 0.75) (markMiddle + LongJut * 0.75) (XH / 2 - 0.5 * gap)
create-glyph 'barOverOnExtension' : glyph-proc
set-width 0
set-mark-anchor 'overlayOnExtension' markMiddle (XH / 2) markMiddle (XH / 2)
include : HOverlayBar (markMiddle - LongJut * 0.75) (markMiddle + LongJut * 0.75) (XH / 2)
create-glyph 'shortSlashOver' : glyph-proc
set-width 0
set-mark-anchor 'overlay' markMiddle (XH / 2) markMiddle (XH / 2)