Examples with ParameterBlock java.awt.image.renderable.ParameterBlock used on opensource projects

Example 21 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project vcell by virtualcell.

the class OverlayImageDisplayJAI method makeAlpha.

/**
 * Method makeAlpha.
 * @param src RenderedImage
 * @param b float
 * @return RenderedImage
 */
private RenderedImage makeAlpha(int width, int height, float b) {
    // get color band
    // src.getColorModel().getNumColorComponents();
    int band = 1;
    // ignore alpha channel
    band = band > 3 ? 3 : band;
    // make alpha channel paramenter
    Byte[] bandValues = new Byte[band];
    for (int i = 0; i < band; i++) {
        bandValues[i] = new Byte((byte) (b * SCALE_MAX));
    }
    // make alpha channel paramenter
    ParameterBlock pb = new ParameterBlock();
    pb.add((float) width);
    pb.add((float) height);
    pb.add(bandValues);
    // make alpha channel
    return JAI.create("constant", pb, null);
}

Example 22 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project imageio-ext by geosolutions-it.

the class ImageReadPropertyGenerator method createCollection.

/**
 * Type-safe convenience method for creating a {@link Collection}
 * representing the "ImageRead" operation in collection mode. The
 * method packs the parameters into a new <code>ParameterBlock</code>
 * and invokes
 * {@link JAI#createCollection(String,ParameterBlock, RenderingHints)}.
 *
 * @param input The input source.
 * @param imageChoice The indices of the images to read.
 * @param readMetadata Whether metadata should be read if available.
 * @param readThumbnails Whether thumbnails should be read if available.
 * @param verifyInput Whether to verify the validity of the input source.
 * @param listeners EventListeners to be registered with the ImageReader.
 * @param locale The Locale for the ImageReader to use.
 * @param readParam Java Image I/O read parameter instance.
 * @param reader Java Image I/O reader instance.
 * @param hints Hints possibly including an <code>ImageLayout</code>.
 * @return a collection of images derived from the input source.
 */
public static Collection createCollection(ImageInputStream input, int[] imageChoice, Boolean readMetadata, Boolean readThumbnails, Boolean verifyInput, EventListener[] listeners, Locale locale, ImageReadParam readParam, ImageReader reader, RenderingHints hints) {
    ParameterBlock args = new ParameterBlock();
    args.add(input);
    args.add(imageChoice);
    args.add(readMetadata);
    args.add(readThumbnails);
    args.add(verifyInput);
    args.add(listeners);
    args.add(locale);
    args.add(readParam);
    args.add(reader);
    return JAI.createCollection(OPERATION_NAME, args, hints);
}

Example 23 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project imageio-ext by geosolutions-it.

the class ImageReadMTCIF method createStatic.

static CollectionImage createStatic(ParameterBlock args, RenderingHints hints) {
    // Clone the ParameterBlock as the ImageChoice will be overwritten.
    ParameterBlock renderedPB = (ParameterBlock) args.clone();
    // Get the ImageChoice.
    int[] imageIndices = (int[]) args.getObjectParameter(1);
    // Variables to be set in the subsequent "if" block.
    // XXX Could probably collapse the if block into a single code seq.
    int numSources;
    ImageIOCollectionImageMT imageList = null;
    if (imageIndices == null) {
        // null-valued ImageChoice: load all images.
        // Load the first image.
        renderedPB.set(0, 1);
        PlanarImage image = JAI.create("ImageRead", renderedPB, hints);
        // Get the ImageReader property.
        Object readerProperty = image.getProperty(ImageReadDescriptor.PROPERTY_NAME_IMAGE_READER);
        // Try to read the number of images.
        if (readerProperty instanceof ImageReader) {
            try {
                // XXX Really should not allow search here. If search
                // is disallowed and -1 is returned from getNumImages(),
                // then "ImageRead" should just be called until an
                // IndexOutOfBoundsException is caught.
                numSources = ((ImageReader) readerProperty).getNumImages(true);
            } catch (Exception e) {
                // IOException
                // Default to one source.
                numSources = 1;
            }
        } else {
            numSources = 1;
        }
        // Allocate and fill index array.
        imageIndices = new int[numSources];
        for (int i = 0; i < numSources; i++) {
            imageIndices[i] = i;
        }
        // Allocate list and add first image.
        imageList = new ImageIOCollectionImageMT(numSources);
        imageList.add(image);
    } else {
        // Set the number of sources and create the list.
        numSources = imageIndices.length;
        imageList = new ImageIOCollectionImageMT(numSources);
        // Load the first image requested.
        renderedPB.set(imageIndices[0], 1);
        PlanarImage image = JAI.create("ImageRead", renderedPB, hints);
        // Add the first image to the list.
        imageList.add(image);
    }
    // Read subsequent images and add to the list.
    for (int idx = 1; idx < numSources; idx++) {
        renderedPB.set(imageIndices[idx], 1);
        PlanarImage image = JAI.create("ImageRead", renderedPB, hints);
        imageList.add(image);
    }
    // Get the first image in the Collection.
    PlanarImage firstImage = (PlanarImage) imageList.get(0);
    // Transfer properties to the Collection.
    ImageReadMTCRIF.copyProperty(firstImage, imageList, ImageReadDescriptor.PROPERTY_NAME_IMAGE_READ_PARAM);
    ImageReadMTCRIF.copyProperty(firstImage, imageList, ImageReadDescriptor.PROPERTY_NAME_IMAGE_READER);
    ImageReadMTCRIF.copyProperty(firstImage, imageList, ImageReadDescriptor.PROPERTY_NAME_METADATA_STREAM);
    return imageList;
}

Example 24 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project ant by apache.

the class Rotate method performRotate.

/**
 * Rotate an image.
 * @param image the image to rotate.
 * @return the rotated image.
 */
public PlanarImage performRotate(PlanarImage image) {
    float tAngle = (float) (angle * (Math.PI / HALF_CIRCLE));
    ParameterBlock pb = new ParameterBlock();
    pb.addSource(image);
    pb.add(0.0F);
    pb.add(0.0F);
    pb.add(tAngle);
    pb.add(new InterpolationNearest());
    return JAI.create("Rotate", pb, null);
}

Example 25 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project ant by apache.

the class Scale method performScale.

/**
 * Scale an image.
 * @param image the image to scale.
 * @return the scaled image.
 */
public PlanarImage performScale(PlanarImage image) {
    ParameterBlock pb = new ParameterBlock();
    pb.addSource(image);
    float xFl = getWidth();
    float yFl = getHeight();
    if (!xPercent) {
        xFl = xFl / image.getWidth();
    }
    if (!yPercent) {
        yFl = yFl / image.getHeight();
    }
    if ("width".equals(proportions)) {
        yFl = xFl;
    } else if ("height".equals(proportions)) {
        xFl = yFl;
    } else if ("fit".equals(proportions)) {
        yFl = Math.min(xFl, yFl);
        xFl = yFl;
    } else if ("cover".equals(proportions)) {
        yFl = Math.max(xFl, yFl);
        xFl = yFl;
    }
    pb.add(Float.valueOf(xFl));
    pb.add(Float.valueOf(yFl));
    log("\tScaling to " + (xFl * HUNDRED) + "% x " + (yFl * HUNDRED) + "%");
    return JAI.create("scale", pb);
}