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Refine shape of U+A666 and U+A667 (#1838).

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be5invis 2023-07-09 15:10:08 -07:00
parent a3a856c3e4
commit f7a80d60d2
3 changed files with 32 additions and 15 deletions
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1
changes/25.0.2.md Normal file
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@ -0,0 +1 @@
* Refine shape of U+A666 and U+A667 (#1838).

11
font-src/glyphs/letter/latin/upper-m.ptl
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@ -28,6 +28,11 @@ glyph-block Letter-Latin-Upper-M : begin
local xLeftTop : df.leftSB + top * sidesSlope local xLeftTop : df.leftSB + top * sidesSlope
local xRightTop : df.rightSB - top * sidesSlope local xRightTop : df.rightSB - top * sidesSlope
local fHasBottomInnerSerif : match slabType
[Just SLAB-FULL] true
[Just SLAB-AUTO] SLAB
__ false
local swSideBot : match form local swSideBot : match form
[Just FORM-SAN-SMALL] : AdviceStroke 2.5 df.div [Just FORM-SAN-SMALL] : AdviceStroke 2.5 df.div
[Just FORM-SAN] : AdviceStroke 2.5 df.div [Just FORM-SAN] : AdviceStroke 2.5 df.div
@ -45,7 +50,7 @@ glyph-block Letter-Latin-Upper-M : begin
[Just FORM-SAN] : top * 0.55 [Just FORM-SAN] : top * 0.55
[Just FORM-TURN-W] : top * 0.45 [Just FORM-TURN-W] : top * 0.45
[Just FORM-HANGING] : top * 0.3 / (kMidHang * kMidHang) [Just FORM-HANGING] : top * 0.3 / (kMidHang * kMidHang)
__ : if SLAB Stroke 0 __ : if fHasBottomInnerSerif swSideBot 0
local kMidShift : match form local kMidShift : match form
[Just FORM-FLAT] 0.75 [Just FORM-FLAT] 0.75
__ 0.5 __ 0.5
@ -69,8 +74,8 @@ glyph-block Letter-Latin-Upper-M : begin
flat (xRightTop - kMidShift * swSideTop * HVContrast) top [widths.rhs.heading swMiddle Downward] flat (xRightTop - kMidShift * swSideTop * HVContrast) top [widths.rhs.heading swMiddle Downward]
curl (df.middle + 0.5 * swMiddleShrunk * HVContrast) middleY [widths.rhs.heading swMiddleShrunk Downward] curl (df.middle + 0.5 * swMiddleShrunk * HVContrast) middleY [widths.rhs.heading swMiddleShrunk Downward]
local sfT : SerifFrame top 0 xLeftTop xRightTop (swRef -- swSideBot) (hSplit -- 3) local sfT : SerifFrame top 0 xLeftTop xRightTop (swRef -- swSideBot) (hSplit -- 3) (fForceSymmetric -- (form !== FORM-FLAT))
local sfB : SerifFrame top 0 df.leftSB df.rightSB (swRef -- swSideBot) (hSplit -- 3) local sfB : SerifFrame top 0 df.leftSB df.rightSB (swRef -- swSideBot) (hSplit -- 3) (fForceSymmetric -- (form !== FORM-FLAT))
include : match slabType include : match slabType
[Just SLAB-NONE] : no-shape [Just SLAB-NONE] : no-shape
[Just SLAB-FULL] : composite-proc sfT.lt.outer sfT.rt.outer sfB.lb.full sfB.rb.full [Just SLAB-FULL] : composite-proc sfT.lt.outer sfT.rt.outer sfB.lb.full sfB.rb.full

35
font-src/glyphs/letter/shared.ptl
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@ -590,15 +590,16 @@ glyph-block Letter-Shared-Shapes : begin
Math.min jut (0.5 * ink + [Math.max (Stroke * TanSlope) (0.375 * gap)]) Math.min jut (0.5 * ink + [Math.max (Stroke * TanSlope) (0.375 * gap)])
class CSerifFrame class CSerifFrame
public [new top bot left right swRef swSerif div hSplit] : begin public [new top bot left right swRef swSerif div hSplit fForceSymmetric] : begin
set this.top top set this.top top
set this.bot bot set this.bot bot
set this.left left set this.left left
set this.right right set this.right right
set this.swRef swRef set this.swRef swRef
set this.swSerif swSerif set this.swSerif swSerif
set this.div div set this.div div
set this.hSplit hSplit set this.hSplit hSplit
set this.fForceSymmetric fForceSymmetric
local ink : HVContrast * swRef local ink : HVContrast * swRef
local gap : (right - left - hSplit * ink) / (hSplit - 1) local gap : (right - left - hSplit * ink) / (hSplit - 1)
@ -608,7 +609,7 @@ glyph-block Letter-Shared-Shapes : begin
local jut : mix (0.5 * HVContrast * swRef) Jut [Math.min 1 : div * 2.25 / hSplit] local jut : mix (0.5 * HVContrast * swRef) Jut [Math.min 1 : div * 2.25 / hSplit]
local sideJut : jut - 0.5 * ink local sideJut : jut - 0.5 * ink
local jutIn : JutIn left right jut swRef hSplit local jutIn : if fForceSymmetric jut : JutIn left right jut swRef hSplit
local sideJutIn : jutIn - 0.5 * ink local sideJutIn : jutIn - 0.5 * ink
local lBarCenter : left + 0.5 * ink local lBarCenter : left + 0.5 * ink
@ -661,8 +662,18 @@ glyph-block Letter-Shared-Shapes : begin
return : new CSerifFrame this.top this.bot l1 r1 this.swRef this.swSerif this.div (r - l + 1) return : new CSerifFrame this.top this.bot l1 r1 this.swRef this.swSerif this.div (r - l + 1)
glyph-block-export SerifFrame glyph-block-export SerifFrame
define [SerifFrame] : with-params [top bot left right [swRef Stroke] [swSerif swRef] [div 1] [hSplit 2]] : begin define [SerifFrame] : begin
return : new CSerifFrame top bot left right swRef swSerif div hSplit postulate
top
bot
left
right
swRef -- Stroke
swSerif -- swRef
div -- 1
hSplit -- 2
fForceSymmetric -- false
return : new CSerifFrame top bot left right swRef swSerif div hSplit fForceSymmetric
define SerifFrame.fromDf : function [] : with-params [df top bot [swSerif df.mvs]] : begin define SerifFrame.fromDf : function [] : with-params [df top bot [swSerif df.mvs]] : begin
return : SerifFrame top bot df.leftSB df.rightSB return : SerifFrame top bot df.leftSB df.rightSB