Module: Fontisan::Ufo::Compile::Filters::ReverseContourDirection

Defined in:
lib/fontisan/ufo/compile/filters/reverse_contour_direction.rb

Overview

Reverses the point order in every contour. TrueType fonts use clockwise winding for outer contours (opposite of the PostScript/UFO convention). Applying this filter before TTF compilation ensures correct glyph rendering.

Class Method Summary collapse

Class Method Details

.run(glyphs, **_opts) ⇒ Array<Fontisan::Ufo::Glyph>

Returns the same array, mutated in place.

Parameters:

Returns:



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# File 'lib/fontisan/ufo/compile/filters/reverse_contour_direction.rb', line 15

def self.run(glyphs, **_opts)
  glyphs.each do |glyph|
    glyph.contours.each do |contour|
      contour.points.reverse!
    end
  end
  glyphs
end