Java Code Examples for java.awt.image.Raster#createRaster()

The following examples show how to use java.awt.image.Raster#createRaster() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: RasterOpNullDestinationRasterTest.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
public static void main(String[] args) {

        byte[][] data = new byte[1][10];
        ByteLookupTable lut = new ByteLookupTable(0, data);
        RasterOp op = new LookupOp(lut, null);

        int[] bandOffsets = {0};
        Point location = new Point(0, 0);
        DataBuffer db = new DataBufferByte(10 * 10);
        SampleModel sm = new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE,
                                                         10, 10, 1, 10,
                                                         bandOffsets);

        Raster src = Raster.createRaster(sm, db, location);

        op.filter(src, null); // this used to result in NullPointerException
    }
Example 2
Source File: Picture.java    From libreveris with GNU Lesser General Public License v3.0 5 votes vote down vote up 
private void updateParams ()
        throws ImageFormatException
{
    checkImageFormat();

    // Cache dimensions
    dimension = new Dimension(image.getWidth(), image.getHeight());
    raster = Raster.createRaster(
            image.getData().getSampleModel(),
            image.getData().getDataBuffer(),
            null);
    logger.debug("raster={}", raster);

    // Check pixel size and compute grayFactor accordingly
    ColorModel colorModel = image.getColorModel();
    int pixelSize = colorModel.getPixelSize();
    logger.debug("colorModel={} pixelSize={}", colorModel, pixelSize);

    if (pixelSize == 1) {
        grayFactor = 1;
    } else if (pixelSize <= 8) {
        grayFactor = (int) Math.rint(128 / Math.pow(2, pixelSize - 1));
    } else if (pixelSize <= 16) {
        grayFactor = (int) Math.rint(32768 / Math.pow(2, pixelSize - 1));
    } else {
        throw new RuntimeException("Unsupported pixel size: " + pixelSize);
    }

    logger.debug("grayFactor={}", grayFactor);
}