Module: ZPNG::ScanLine::Mixins::NotFirstLine
- Defined in:
- lib/zpng/scan_line/mixins.rb
Instance Method Summary collapse
Instance Method Details
#prev_scanline_byte(x) ⇒ Object
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# File 'lib/zpng/scan_line/mixins.rb', line 16 def prev_scanline_byte x image.scanlines[@idx-1].decoded_bytes.getbyte(x) end |