Examples with Interpolation javax.media.jai.Interpolation used on opensource projects

Example 1 with Interpolation

use of javax.media.jai.Interpolation in project Lucee by lucee.

the class Image method rotate.

public void rotate(float x, float y, float angle, int interpolation) throws ExpressionException {
    if (x == -1)
        x = (float) getWidth() / 2;
    if (y == -1)
        y = (float) getHeight() / 2;
    angle = (float) Math.toRadians(angle);
    ColorModel cmSource = image().getColorModel();
    if (cmSource instanceof IndexColorModel && cmSource.hasAlpha() && !cmSource.isAlphaPremultiplied()) {
        image(paletteToARGB(image()));
        cmSource = image().getColorModel();
    }
    BufferedImage alpha = null;
    if (cmSource.hasAlpha() && !cmSource.isAlphaPremultiplied()) {
        alpha = getAlpha(image());
        image(removeAlpha(image()));
    }
    Interpolation interp = Interpolation.getInstance(0);
    if (INTERPOLATION_BICUBIC == interpolation)
        interp = Interpolation.getInstance(1);
    else if (INTERPOLATION_BILINEAR == interpolation)
        interp = Interpolation.getInstance(2);
    if (alpha != null) {
        ParameterBlock params = new ParameterBlock();
        params.addSource(alpha);
        params.add(x);
        params.add(y);
        params.add(angle);
        params.add(interp);
        params.add(new double[] { 0.0 });
        RenderingHints hints = new RenderingHints(RenderingHints.KEY_INTERPOLATION, (RenderingHints.VALUE_INTERPOLATION_BICUBIC));
        hints.add(new RenderingHints(JAI.KEY_BORDER_EXTENDER, new BorderExtenderConstant(new double[] { 255.0 })));
        hints.add(new RenderingHints(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.TRUE));
        alpha = JAI.create("rotate", params, hints).getAsBufferedImage();
    }
    ParameterBlock params = new ParameterBlock();
    params.addSource(image());
    params.add(x);
    params.add(y);
    params.add(angle);
    params.add(interp);
    params.add(new double[] { 0.0 });
    BorderExtender extender = new BorderExtenderConstant(new double[] { 0.0 });
    RenderingHints hints = new RenderingHints(JAI.KEY_BORDER_EXTENDER, extender);
    hints.add(new RenderingHints(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.TRUE));
    image(JAI.create("rotate", params, hints).getAsBufferedImage());
    if (alpha != null)
        image(addAlpha(image(), alpha, 0, 0));
}