Module: ZIMG::PNG::Scanline::Mixins::NotFirstLine

Defined in:

lib/zimg/png/scanline_mixins.rb

Instance Method Summary

• #prev_scanline_byte(x) ⇒ Object

Instance Method Details

#prev_scanline_byte(x) ⇒ Object

# File 'lib/zimg/png/scanline_mixins.rb', line 18

def prev_scanline_byte(x)
  image.scanlines[@idx - 1].decoded_bytes.getbyte(x)
end