class Image
    def initialize(data,conf)
        @data = data
        @name = data.url.gsub!(/\W/,'').gsub!(/\_/,'').to_s
        @conf=conf.data
    end
    def normalizespot
        #divide spot.png intensity by max. position reps (@data.reps)
        intensity = (100-(100/@data.reps).ceil).to_s
        normalize = "convert "<<@conf['dotimage']<<" -fill white -colorize "<<intensity<<"% "<<@name<<".bol.png"
        system(normalize)
    end
    def iterate
        halfwidth=@conf['dotwidth']/2
        compose = "convert -page "<<(@data.x+halfwidth).to_s<<"x"<<(@data.y+halfwidth).to_s<<" pattern:gray100 "
        #iterate spots
        @data.list.each do |dot|
            compose << "-page +"<<((dot.x)-halfwidth).to_s<<"+"<<((dot.y)-halfwidth).to_s<<" "<<@name<<".bol.png "
        end
        compose << "-background white -compose multiply -flatten "<<@name<<".empty.png"
        system(compose)
    end
    def colorize
        #invert image...
        invert = "convert "<<@name<<".empty.png -negate "<<@name<<".full.png"
        system(invert)
        #colorize it...
        colorize = "convert "<<@name<<'.full.png -type TruecolorMatte '<<@conf['colorimage']<<' -fx "v.p{0,u*v.h}" '<<@name<<".colorized.png"
        system(colorize)
        #and apply transparency...
        transparency = "convert "<<@name<<'.colorized.png -channel A -fx "A*'<<@conf['opacity']<<'"  '<<@name<<'.final.'<<@conf['format']
        system(transparency)
    end
end