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# File 'lib/chunky_png/pixel_matrix/encoding.rb', line 5
def encode(constraints = {})
encoding = determine_encoding(constraints)
result = {}
result[:header] = { :width => width, :height => height, :color => encoding[:color_mode] }
if encoding[:color_mode] == ChunkyPNG::COLOR_INDEXED
result[:palette_chunk] = encoding[:palette].to_plte_chunk
result[:transparency_chunk] = encoding[:palette].to_trns_chunk unless encoding[:palette].opaque?
end
result[:pixelstream] = encode_pixelstream(encoding[:color_mode], encoding[:palette])
return result
end
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