devxlogo

Create a “Night” Filter Using RGBImageFilter

Create a “Night” Filter Using RGBImageFilter

This following code shows you how to create the “night” effect for an image using the RGBImageFilter:

import java.awt.image.*;public class NightFilter extends RGBImageFilter { double frac;  //0.0<=g<=1.0  public NightFilter(double g) {    frac=g;  }  public int filterRGB(int x, int y, int rgb) {    if (frac<=0) return 0xFF000000;    if (frac&gt1.0) return 0xFF000000;    int red=rgb & 0x00FF0000;red>>>=16;    int green=rgb & 0x0000FF00;green>>>=8;    int blue=rgb & 0x0000FF;        int r=(int) (red*frac);    int g=(int) (green*frac);    int b=(int) (blue*frac);        return (0x000000FF<<24) | (r <<16) | (g << 8) | b;   }}
See also  Monetize TikTok For Your Business
devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist