ImageUtils.java

package aliview.gui.pane;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.nio.ByteBuffer;
import java.util.Arrays;

import org.apache.log4j.Logger;

import aliview.color.ColorUtils;


public class ImageUtils {
	private static final Logger logger = Logger.getLogger(ImageUtils.class);
	
	public static void insertRGBArrayAt(int targetX, int targetY, RGBArray newPiece, RGBArray origPiece) throws Exception{
		
		try{
			//UnSafe unsafe = Unsafe.getUnsafe();
		int offset = targetY * origPiece.getScanWidth() + targetX; // first pos in target array
		int target;
		
		// Outer loop is each scanline
		
		int counter = 0;
		for(int scanCount = 0; scanCount < newPiece.getHeight(); scanCount ++){
			// Inner loop is each pixel per scan
		//	int posOrig = offset + scanCount * origPiece.getScanWidth();
		//	int posNewPiece = scanCount * newPiece.getScanWidth();
			//System.arraycopy(origPiece.backend, posOrig, newPiece.backend, posNewPiece, newPiece.getScanWidth());
			
			for(int n = 0; n < newPiece.getScanWidth(); n++){
				int posOrig = offset + scanCount * origPiece.getScanWidth() + n;
				int posNewPiece = scanCount * newPiece.getScanWidth() + n;
				origPiece.backend[posOrig] = newPiece.backend[posNewPiece];		
				counter++;
			}	
		}
			
		}catch(Exception e){
			e.printStackTrace();
			throw e;
		}
	}

		/**
		 * Converts a given Image into a BufferedImage
		 *
		 * @param img The Image to be converted
		 * @return The converted BufferedImage
		 */
		public static BufferedImage toBufferedImage(Image img)
		{
		    if (img instanceof BufferedImage)
		    {
		        return (BufferedImage) img;
		    }

		    // Create a buffered image with transparency
		    BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);

		    // Draw the image on to the buffered image
		    Graphics2D bGr = bimage.createGraphics();
		    bGr.drawImage(img, 0, 0, null);
		    bGr.dispose();

		    // Return the buffered image
		    return bimage;
		}

		public static void darkerRGBArrayColumn(RGBArray clipRGB, int colPos) {
			
			for(int posInArray = colPos; posInArray < clipRGB.getLength(); posInArray += clipRGB.getScanWidth()){		
				int colVal = clipRGB.getBackend()[posInArray];
				clipRGB.getBackend()[posInArray] = ColorUtils.darkerRGB(colVal);
			}	
			
		}

}