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81 lines
2.7 KiB
Plaintext
Executable File
81 lines
2.7 KiB
Plaintext
Executable File
###### Braille symbols
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$$include '../meta/macros.ptl'
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import [mix linreg clamp fallback] from '../support/utils'
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import [designParameters] from '../meta/aesthetics'
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# Needed for bitwise operators
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import '../support/mask-bit' as maskBit
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export : define [apply] : begin
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glyph-module-entry commonShapes overmarks
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if recursive : return nothing
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local left : MIDDLE - (0.25 * WIDTH)
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local right : MIDDLE + (0.25 * WIDTH)
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local offsetY : 0.25 * (parenMid - parenTop)
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local stress : 0.5 * [adviceBlackness 3.375]
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local dotRadius : PERIODRADIUS * [Math.min 1 (stress / HALFSTROKE)]
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### Blank
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sketch # brailleBlank
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set-width WIDTH
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save 'brailleBlank' 0x2800
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### Computed Braille Patterns
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###
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### Bit to Dot mapping:
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### 0 3
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### 1 4
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### 2 5
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### 6 7
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###
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foreach [byte : range 1 256] : sketch
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local dots {}
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local [y-coord y] (parenMid + y * offsetY)
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# Is there a way to directly use (byte & (1 << bit)) here?
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foreach [bit : range 0 8] : if [maskBit byte bit] : begin
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include : match bit
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0 : DotAt left [y-coord (-3)] dotRadius
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1 : DotAt left [y-coord (-1)] dotRadius
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2 : DotAt left [y-coord 1 ] dotRadius
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3 : DotAt right [y-coord (-3)] dotRadius
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4 : DotAt right [y-coord (-1)] dotRadius
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5 : DotAt right [y-coord 1 ] dotRadius
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6 : DotAt left [y-coord 3 ] dotRadius
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7 : DotAt right [y-coord 3 ] dotRadius
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dots.push (bit + 1) # Match numerals in Unicode spec
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set currentGlyph.cmpPriority (-101)
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save ("braille" + [dots.join '']) (0x2800 + byte)
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set glyphs.braille7.cmpPriority 101
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set glyphs.braille37.cmpPriority 102
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set glyphs.braille3.cmpPriority 101
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set glyphs.braille237.cmpPriority 103
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set glyphs.braille27.cmpPriority 102
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set glyphs.braille23.cmpPriority 102
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set glyphs.braille2.cmpPriority 101
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set glyphs.braille1237.cmpPriority 104
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set glyphs.braille123.cmpPriority 103
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set glyphs.braille127.cmpPriority 103
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set glyphs.braille137.cmpPriority 103
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set glyphs.braille13.cmpPriority 102
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set glyphs.braille12.cmpPriority 102
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set glyphs.braille17.cmpPriority 102
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set glyphs.braille1.cmpPriority 101
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set glyphs.braille7.flatten true
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set glyphs.braille37.flatten true
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set glyphs.braille3.flatten true
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set glyphs.braille237.flatten true
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set glyphs.braille27.flatten true
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set glyphs.braille23.flatten true
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set glyphs.braille2.flatten true
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set glyphs.braille1237.flatten true
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set glyphs.braille123.flatten true
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set glyphs.braille127.flatten true
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set glyphs.braille137.flatten true
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set glyphs.braille13.flatten true
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set glyphs.braille12.flatten true
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set glyphs.braille17.flatten true
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set glyphs.braille1.flatten true
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