import java.awt.Colorimport nl.captcha.Captchaimport nl.captcha.noise.*import nl.captcha.backgrounds.*import nl.captcha.servlet.CaptchaServletUtilclass NoiseController {	def final WIDTH = 200    def final HEIGHT = 50    def simple = {        def captcha = new Captcha.Builder(WIDTH, HEIGHT)            .addNoise()            .build()        CaptchaServletUtil.writeImage(response, captcha.image)    }    def curved = {        def captcha = new Captcha.Builder(WIDTH, HEIGHT)            .addNoise(new CurvedLineNoiseProducer())            .build()        CaptchaServletUtil.writeImage(response, captcha.image)    }    def curved_bigandblue = {        def captcha = new Captcha.Builder(WIDTH, HEIGHT)            .addNoise(new CurvedLineNoiseProducer(Color.BLUE, 8))            .build()        CaptchaServletUtil.writeImage(response, captcha.image)    }    def straightline = {        def captcha = new Captcha.Builder(WIDTH, HEIGHT)            .addNoise(new StraightLineNoiseProducer())            .build()        CaptchaServletUtil.writeImage(response, captcha.image)    }    def multilines = {        def captcha = new Captcha.Builder(WIDTH, HEIGHT)            .addNoise(new StraightLineNoiseProducer(Color.RED, 6))            .addNoise(new StraightLineNoiseProducer(Color.BLUE, 4))            .addNoise(new StraightLineNoiseProducer(Color.WHITE, 2))            .addBackground()            .build()        CaptchaServletUtil.writeImage(response, captcha.image)    }}