Captcha API#

Producer captcha = DefaultCaptchaProducer.builder()
    .textProducer(textProducer)
    .wordRenderer(wordRenderer)
    .gimpyEngine(gimpyEngine)
    .backgroundProducer(backgroundProducer)
    .width(200)
    .height(50)
    .borderDrawn(true)
    .borderColour(Color.BLACK)
    .borderThickness(1)
    .build();

String text = captcha.createText();
BufferedImage image = captcha.createImage(text);

public interface TextProducer {
    String getText();
}

DefaultTextProducer textProducer = DefaultTextProducer.builder()
    .length(6)                                    // default: 6
    .chars("ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray()) // default: a-z, A-Z, 0-9
    .build();

public interface WordRenderer {
    BufferedImage renderWord(String word, int width, int height);
}

DefaultWordRenderer wordRenderer = DefaultWordRenderer.builder()
    .fontSize(40)                          // default: 40
    .fonts("Arial", "Courier")             // default: Arial, Courier
    .fontColour(Color.BLACK)               // default: Color.BLACK
    .charSpace(2)                          // default: 2
    .fontStyle(FontStyle.BOLD)             // default: FontStyle.BOLD
    .build();

public interface GimpyEngine {
    BufferedImage getDistortedImage(BufferedImage baseImage);
}

WaterRipple gimpy = WaterRipple.builder()
    .noiseProducer(DefaultNoiseProducer.builder().build())  // default: DefaultNoiseProducer
    .build();

FishEyeGimpy gimpy = FishEyeGimpy.builder()
    .build();

ShadowGimpy gimpy = ShadowGimpy.builder()
    .noiseProducer(DefaultNoiseProducer.builder().build())  // default: DefaultNoiseProducer
    .build();

public interface NoiseProducer {
    void makeNoise(BufferedImage image, float factorOne, float factorTwo,
                   float factorThree, float factorFour);
}

DefaultNoiseProducer noise = DefaultNoiseProducer.builder()
    .noiseColour(Color.BLACK) // default: Color.BLACK
    .build();

NoiseProducer noise = NoNoiseProducer.builder()
    .build();

public interface BackgroundProducer {
    BufferedImage addBackground(BufferedImage image);
}

DefaultBackgroundProducer background = DefaultBackgroundProducer.builder()
    .colourFrom(Color.WHITE)       // default: Color.LIGHT_GRAY
    .colourTo(Color.LIGHT_GRAY)    // default: Color.WHITE
    .build();