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Refine tails of Schwa and Reversed Lower E under italics (#2294)

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* Schwa & Rev-e italic tail refinement.

* Use `InwardSlabArcEnd`.

* fix heavy.
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John McWilliams 2024-04-14 19:59:25 -04:00 • committed by GitHub
parent 8c549d0bbe
commit c8b9e608a3
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3 changed files with 21 additions and 24 deletions
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1
changes/29.2.1.md
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@ -1,4 +1,5 @@
* Refine shape of `U+1CC09`, `U+1CC0A`, `U+1CC10` and `U+1CC11`.
* Refine terminal shape of Schwa and Reversed Lower E (`U+018F`, `U+0258`..`U+025A`, `U+04D8`..`U+04D9`) under italics.
* Add characters:
- LEFT-FACING SNAKE HEAD WITH OPEN MOUTH (`U+1CC70`) ... DOWN-FACING SNAKE HEAD WITH CLOSED MOUTH (`U+1CC77`) (Proposed for Unicode 16; L2/21-235).
- UPPER LEFT QUADRANT FACE WITH OPEN EYES (`U+1CCA6`) ... BOTTOM HALF FORWARD-FACING RUNNER FRAME-4 (`U+1CDF4`) (Proposed for Unicode 16; L2/21-235).

12
packages/font-glyphs/src/common/shapes.ptl
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@ -430,12 +430,12 @@ glyph-block CommonShapes : begin
define nHookSegments 12
define [HookShape toStraight toFinish isStart args] : begin
local [object y tight sw swItalicAdj noAdjTerminalY turnSlope isTail suppressSwash] args
local [object y tight sw swItalicAdj noAdjTerminalY turnSlope isTail noSwash] args
local atBottom : toStraight.y > y
local ltr : if isStart (toFinish.x < toStraight.x) (toFinish.x > toStraight.x)
local dtu : if isStart (y > toFinish.y) (y < toFinish.y)
local doSwash : !suppressSwash && !tight && !isStart && atBottom && (para.isItalic || isTail) && [if (para.slopeAngle >= 0) ltr [not ltr]]
local doSwash : !noSwash && !tight && !isStart && atBottom && (para.isItalic || isTail) && [if (para.slopeAngle >= 0) ltr [not ltr]]
local superness : if tight DesignParameters.tightHookSuperness DesignParameters.superness
# Adjust terminal's position if necessary
@ -528,9 +528,9 @@ glyph-block CommonShapes : begin
local-parameter : noAdjTerminalY -- false
local-parameter : turnSlope -- nothing
local-parameter : isTail -- false
local-parameter : suppressSwash -- false
local-parameter : noSwash -- false
return : Interpolator hookStartBlender
object y tight sw swItalicAdj noAdjTerminalY turnSlope isTail suppressSwash
object y tight sw swItalicAdj noAdjTerminalY turnSlope isTail noSwash
glyph-block-export hookend
define flex-params [hookend] : begin
@ -541,9 +541,9 @@ glyph-block CommonShapes : begin
local-parameter : noAdjTerminalY -- false
local-parameter : turnSlope -- nothing
local-parameter : isTail -- false
local-parameter : suppressSwash -- false
local-parameter : noSwash -- false
return : Interpolator hookEndBlender
object y tight sw swItalicAdj noAdjTerminalY turnSlope isTail suppressSwash
object y tight sw swItalicAdj noAdjTerminalY turnSlope isTail noSwash
glyph-block-export Ungizmo
define [Ungizmo] : glyph-proc

32
packages/font-glyphs/src/letter/latin/lower-e.ptl
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@ -10,16 +10,16 @@ glyph-block Letter-Latin-Lower-E : begin
glyph-block-import Common-Derivatives
glyph-block-import Letter-Shared : CreateSelectorVariants DefineSelectorGlyph CreateTurnedLetter
glyph-block-import Letter-Shared-Shapes : FlatHookDepth RetroflexHook
glyph-block-import Letter-Shared-Shapes : SerifedArcEnd ArcEndSerif DToothlessRise
glyph-block-import Letter-Shared-Shapes : SerifedArcEnd InwardSlabArcEnd ArcEndSerif
glyph-block-import Mark-Shared-Metrics : markExtend markStroke markStress markFine
glyph-block-import Mark-Above : aboveMarkTop aboveMarkBot aboveMarkMid aboveMarkStack
glyph-block-import Mark-Adjustment : ExtendBelowBaseAnchors
glyph-block-import Letter-Latin-C : CConfig
define [xTerminalR df] : df.rightSB - OX * [if para.isItalic 0 0.5]
define [HookHeight top] : Math.min Hook (AHook / XH * top)
define [HookHeight top stroke] : Math.min Hook (AHook / XH * top)
if para.isItalic top (stroke / 2 + (top - stroke * 3) / 4)
define [HookHeightTight top stroke noItalicAdj] : Math.min [HookHeight top]
if (para.isItalic && !noItalicAdj) top (stroke / 2 + (top - stroke * 3) / 4)
define SLAB-NONE 0
define SLAB-CLASSICAL 1
@ -27,18 +27,16 @@ glyph-block Letter-Latin-Lower-E : begin
define [SmallESerifedTerminalShape df top stroke tailSlab schwaTail] : match tailSlab
[Just SLAB-CLASSICAL] : begin
SerifedArcEnd.LtrLhs df.rightSB df.middle 0 stroke [HookHeight top stroke]
[Just SLAB-INWARD] : list
arcvh
g4 (df.middle + CorrectionOMidX * stroke) O
g4 df.rightSB (DToothlessRise)
SerifedArcEnd.LtrLhs df.rightSB df.middle 0 stroke [HookHeight top]
[Just SLAB-INWARD] : begin
InwardSlabArcEnd.LtrLhs df.rightSB df.middle 0 stroke [HookHeight top]
__ : list
hookend O (sw -- stroke) (suppressSwash -- schwaTail)
g4 [xTerminalR df] [HookHeight top stroke]
hookend O (sw -- stroke) (noSwash -- schwaTail)
g4 (df.rightSB - [if (para.isItalic && !schwaTail) 0 0.5] * OX) [HookHeightTight top stroke schwaTail]
define [SmallETerminalSerif df top stroke tailSlab schwaTail] : match tailSlab
[Just SLAB-CLASSICAL] : ArcEndSerif.R df.rightSB 0 stroke [HookHeight top stroke]
[Just SLAB-INWARD] : ArcEndSerif.InwardR df.rightSB 0 stroke [HookHeight top stroke]
[Just SLAB-CLASSICAL] : ArcEndSerif.R df.rightSB 0 stroke [HookHeight top]
[Just SLAB-INWARD] : ArcEndSerif.InwardR df.rightSB 0 stroke [HookHeight top]
__ : no-shape
glyph-block-export SmallEShape
@ -64,8 +62,6 @@ glyph-block Letter-Latin-Lower-E : begin
glyph-block-export RevSmallEShape
define [RevSmallEShape] : with-params [df top stroke barpos] : glyph-proc
local barbottom (top * [fallback barpos DesignParameters.eBarPos] - HalfStroke)
local hookx df.leftSB
local hookmiddle : [mix (df.rightSB - O) hookx 0.55] + CorrectionOMidS
include : HBar.b (df.leftSB + (stroke / 2)) (df.rightSB - (stroke / 2)) barbottom stroke
include : dispiro
@ -78,7 +74,7 @@ glyph-block Letter-Latin-Lower-E : begin
flat (df.rightSB - OX) (top - [df.archDepthB SmallArchDepth])
curl (df.rightSB - OX) [df.archDepthA SmallArchDepth]
hookend O (sw -- stroke)
g4 (df.width - [xTerminalR df]) [HookHeight top stroke]
g4 (df.leftSB + 0.5 * OX) [HookHeightTight top stroke true]
glyph-block-export SmallERoundedShape
define [SmallERoundedShape] : with-params [df top stroke barpos tailSlab schwaTail] : glyph-proc
@ -120,7 +116,7 @@ glyph-block Letter-Latin-Lower-E : begin
widths.rhs stroke
[if para.isItalic g2 flat] xStart (barbottom - pfIt * [StrokeWidthBlend 2 3] * O)
if para.isItalic [alsoThru.g2 0.5 0.8] [list]
[if para.isItalic g2 curl] [mix (xStart - [if para.isItalic 0.25 0.0] * [HSwToV stroke]) df.leftSB pBarRight] (barbottom + pfIt * [StrokeWidthBlend 0.25 1] * O)
[if para.isItalic g2 curl] [mix (xStart - pfIt * 0.25 * [HSwToV stroke]) df.leftSB pBarRight] (barbottom + pfIt * [StrokeWidthBlend 0.25 1] * O)
if para.isItalic {} [archv]
g4 (df.leftSB + OX) [mix barbottom top pArcRight]
arcvh
@ -129,7 +125,7 @@ glyph-block Letter-Latin-Lower-E : begin
flat (df.rightSB - OX) (top - [df.archDepthB SmallArchDepth])
curl (df.rightSB - OX) (0 + [df.archDepthA SmallArchDepth])
hookend O (sw -- stroke)
g4 (df.width - [xTerminalR df]) [HookHeight top stroke]
g4 (df.leftSB + 0.5 * OX) [HookHeightTight top stroke true]
define [AbkCheShape] : with-params [fDesc Body df top tailSlab] : glyph-proc
local gap : (df.width - 2 * df.leftSB - 2.5 * df.mvs) * 0.375 - [HSwToV : 0.25 * df.mvs]