Example usage for java.awt.geom AffineTransform shear

Introduction

In this page you can find the example usage for java.awt.geom AffineTransform shear.

Prototype

public void shear(double shx, double shy) 

Source Link

Document

Concatenates this transform with a shearing transformation.

Usage

From source file:JXTransformer.java

public void stateChanged(ChangeEvent e) {
        AffineTransform at = new AffineTransform();
        at.rotate(rotationSlider.getValue() * Math.PI / 180);
        double scale = scalingSlider.getValue() / 100.0;
        at.scale(scale, scale);/* w  ww  .  ja va2s . c o m*/
        double shear = shearingSlider.getValue() / 10.0;
        at.shear(shear, 0);
        for (JXTransformer t : transformers) {
            t.setTransform(at);
        }
    }

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From source file:org.apache.jetspeed.security.mfa.impl.CaptchaImageResource.java

public void init() {
    boolean emptyBackground = true;
    if (config.isUseImageBackground() && background != null) {
        ByteArrayInputStream is = new ByteArrayInputStream(background);
        JPEGImgDecoder decoder = new DefaultJPEGImgDecoder();
        try {//  www . j  ava  2s .  c  o m
            this.image = decoder.decodeAsBufferedImage(is);
            this.width = image.getWidth();
            this.height = image.getHeight();
            emptyBackground = false;
        } catch (Exception e) {
            emptyBackground = true;
        }
    }
    if (emptyBackground) {
        this.width = config.getTextMarginLeft() * 2;
        this.height = config.getTextMarginBottom() * 6;
    }
    char[] chars = challengeId.toCharArray();
    charAttsList = new ArrayList();
    TextLayout text = null;
    AffineTransform textAt = null;
    String[] fontNames = config.getFontNames();
    for (int i = 0; i < chars.length; i++) {
        // font name
        String fontName = (fontNames.length == 1) ? fontNames[0] : fontNames[randomInt(0, fontNames.length)];

        // rise
        int rise = config.getTextRiseRange();
        if (rise > 0) {
            rise = randomInt(config.getTextMarginBottom(),
                    config.getTextMarginBottom() + config.getTextRiseRange());
        }

        if (config.getTextShear() > 0.0 || config.getTextRotation() > 0) {
            // rotation
            double dRotation = 0.0;
            if (config.getTextRotation() > 0) {
                dRotation = Math.toRadians(randomInt(-(config.getTextRotation()), config.getTextRotation()));
            }

            // shear
            double shearX = 0.0;
            double shearY = 0.0;
            if (config.getTextShear() > 0.0) {
                Random ran = new Random();
                shearX = ran.nextDouble() * config.getTextShear();
                shearY = ran.nextDouble() * config.getTextShear();
            }
            CharAttributes cf = new CharAttributes(chars[i], fontName, dRotation, rise, shearX, shearY);
            charAttsList.add(cf);
            text = new TextLayout(chars[i] + "", getFont(fontName),
                    new FontRenderContext(null, config.isFontAntialiasing(), false));
            textAt = new AffineTransform();
            if (config.getTextRotation() > 0)
                textAt.rotate(dRotation);
            if (config.getTextShear() > 0.0)
                textAt.shear(shearX, shearY);
        } else {
            CharAttributes cf = new CharAttributes(chars[i], fontName, 0, rise, 0.0, 0.0);
            charAttsList.add(cf);
        }
        if (emptyBackground) {
            Shape shape = text.getOutline(textAt);
            //                this.width += text.getBounds().getWidth();
            this.width += (int) shape.getBounds2D().getWidth();
            this.width += config.getTextSpacing() + 1;
            if (this.height < (int) shape.getBounds2D().getHeight() + rise) {
                this.height = (int) shape.getBounds2D().getHeight() + rise;
            }
        }
    }
    if (emptyBackground) {
        this.image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics2D gfx = (Graphics2D) this.image.getGraphics();
        gfx.setBackground(Color.WHITE);
        gfx.clearRect(0, 0, width, height);
    }
}

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From source file:org.apache.jetspeed.security.mfa.impl.CaptchaImageResource.java

/**
 * Renders this image/* w w w . j a  v  a2 s  . co m*/
 * 
 * @return The image data
 */
private final byte[] render() throws IOException {
    Graphics2D gfx = (Graphics2D) this.image.getGraphics();
    if (config.isFontAntialiasing())
        gfx.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    int curWidth = config.getTextMarginLeft();
    FontRenderContext ctx = new FontRenderContext(null, config.isFontAntialiasing(), false);
    for (int i = 0; i < charAttsList.size(); i++) {
        CharAttributes cf = (CharAttributes) charAttsList.get(i);
        TextLayout text = new TextLayout(cf.getChar() + "", getFont(cf.getName()), ctx); //gfx.getFontRenderContext());
        AffineTransform textAt = new AffineTransform();
        textAt.translate(curWidth, this.height - cf.getRise());
        if (cf.getRotation() != 0) {
            textAt.rotate(cf.getRotation());
        }
        if (cf.getShearX() > 0.0)
            textAt.shear(cf.getShearX(), cf.getShearY());
        Shape shape = text.getOutline(textAt);
        curWidth += shape.getBounds().getWidth() + config.getTextSpacing();
        if (config.isUseImageBackground())
            gfx.setColor(Color.BLACK);
        else
            gfx.setXORMode(Color.BLACK);
        gfx.fill(shape);
    }
    if (config.isEffectsNoise()) {
        noiseEffects(gfx, image);
    }
    if (config.isUseTimestamp()) {
        if (config.isEffectsNoise())
            gfx.setColor(Color.WHITE);
        else
            gfx.setColor(Color.BLACK);

        TimeZone tz = TimeZone.getTimeZone(config.getTimestampTZ());
        Calendar cal = new GregorianCalendar(tz);
        SimpleDateFormat formatter;
        if (config.isUseTimestamp24hr())
            formatter = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss z");
        else
            formatter = new SimpleDateFormat("MM/dd/yyyy hh:mm:ss a, z");
        formatter.setTimeZone(tz);
        Font font = gfx.getFont();
        Font newFont = new Font(font.getName(), font.getStyle(), config.getTimestampFontSize());
        gfx.setFont(newFont);
        gfx.drawString(formatter.format(cal.getTime()), config.getTextMarginLeft() * 4, this.height - 1);
    }

    return toImageData(image);
}

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