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Add mechanism for including letter models

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This commit is contained in:
be5invis 2021-10-25 19:33:10 -07:00
parent 9d89f5ac7c
commit 41e1c99e37
2 changed files with 35 additions and 19 deletions
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41
font-src/meta/aesthetics.ptl
View file

@ -289,11 +289,18 @@ export : define [copyFontMetrics fm1 fm2] : begin
set fm2.post.underlineThickness fm1.post.underlineThickness
class CMarkSet
public [new markAnchors baseAnchors] : begin
set this.markAnchors markAnchors
set this.baseAnchors baseAnchors
public [applyToGlyph g] : begin
g.copyAnchors this
export : define [compositeBaseAnchors] : begin
local h {.}
local baseAnchorSink {.}
foreach a [items-of arguments] : foreach k [items-of [Object.keys a.baseAnchors]] : begin
set h.(k) : new Anchor a.baseAnchors.(k).x a.baseAnchors.(k).y a.baseAnchors.(k).type a.baseAnchors.(k).mbx a.baseAnchors.(k).mby
return {.baseAnchors h .isMarkSet true}
set baseAnchorSink.(k) : new Anchor a.baseAnchors.(k).x a.baseAnchors.(k).y a.baseAnchors.(k).type a.baseAnchors.(k).mbx a.baseAnchors.(k).mby
return : new CMarkSet null baseAnchorSink
export : define [MarksetDiv p sbMul me] : begin
define width : p * me.Width
@ -388,16 +395,24 @@ export : define DesignParameters : object
# Square dot
squareDotScalar 0.95
export : define [GenDivFrame metrics] : lambda [_div _hPack _sbMul] : begin
export : define [GenDivFrame metrics] : begin
class CDivFrame
public [new _div _hPack _sbMul] : begin
local div : fallback _div 1
local hPack : Math.max 2 [fallback _hPack 0]
local sbMul : fallback _sbMul : Math.min 1 : (metrics.Width * div - hPack * [metrics.AdviceStroke hPack div]) / (2 * hPack * metrics.SB)
return : object
div div
width : metrics.Width * div
middle : metrics.Middle * div
sb : metrics.SB * sbMul
leftSB : metrics.SB * sbMul
rightSB : metrics.Width * div - metrics.SB * sbMul
mvs : metrics.AdviceStroke hPack div
markSet : MarksetDiv div sbMul metrics
set this.div div
set this.width : metrics.Width * div
set this.middle : metrics.Middle * div
set this.sb : metrics.SB * sbMul
set this.leftSB : metrics.SB * sbMul
set this.rightSB : metrics.Width * div - metrics.SB * sbMul
set this.mvs : metrics.AdviceStroke hPack div
set this.markSet : MarksetDiv div sbMul metrics
public [applyToGlyph g] : begin
g.setWidth this.width
return this
return : lambda [_div _hPack _sbMul] : new CDivFrame _div _hPack _sbMul

7
font-src/support/glyph/index.js
View file

@ -65,10 +65,10 @@ exports.Glyph = class Glyph {
throw new Error("Unreachable: Attempt to include a Null or Undefined");
} else if (component instanceof Function) {
return component.call(this, copyAnchors, copyWidth);
} else if (component.applyToGlyph instanceof Function) {
return component.applyToGlyph(this, copyAnchors, copyWidth);
} else if (component instanceof Transform) {
return this.applyTransform(component, copyAnchors);
} else if (component.isMarkSet) {
return this.copyAnchors(component);
} else if (component instanceof Glyph) {
return this.includeGlyph(component, copyAnchors, copyWidth);
} else {
@ -83,7 +83,8 @@ exports.Glyph = class Glyph {
this.combineMarks(g, shift);
this.includeGlyphImpl(g, shift.x, shift.y);
if (copyAnchors || g.isMarkSet) this.copyAnchors(g);
if (g.isMarkSet) throw new Error("Invalid component to be introduced.");
if (copyAnchors) this.copyAnchors(g);
if (copyWidth && g.advanceWidth >= 0) this.advanceWidth = g.advanceWidth;
this.dependsOn(g);
}