FileDocCategorySizeDatePackage
HighlightFilter.javaAPI DocExample2968Sat Sep 12 03:01:00 BST 1998None

HighlightFilter

public class HighlightFilter extends RGBImageFilter
An image filter to highlight an image by brightening or darkening the pixels in the images.
author
Jim Graham
version
1.4, 12/06/96

Fields Summary
boolean
brighter
int
percent
Constructors Summary
public HighlightFilter(boolean b, int p)

	brighter = b;
	percent = p;
	canFilterIndexColorModel = true;
    
Methods Summary
public intfilterRGB(int x, int y, int rgb)

	int r = (rgb >> 16) & 0xff;
	int g = (rgb >> 8) & 0xff;
	int b = (rgb >> 0) & 0xff;
	if (brighter) {
	    r = (255 - ((255 - r) * (100 - percent) / 100));
	    g = (255 - ((255 - g) * (100 - percent) / 100));
	    b = (255 - ((255 - b) * (100 - percent) / 100));
	} else {
	    r = (r * (100 - percent) / 100);
	    g = (g * (100 - percent) / 100);
	    b = (b * (100 - percent) / 100);
	}
	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;
	return (rgb & 0xff000000) | (r << 16) | (g << 8) | (b << 0);