Coloring Individual Pixels

Question

i'm trying to write a program with Java what generates images by coloring individual pixels with RGB by adding up the value of every RGB-channel by one until it reaches 255 and then adds one on the next RGB channel.

Here an example:

RED is set to 0 GREEN is set to 0 BLUE is set to 0

1. RED gets added up by one (RED ++)on the first pixel until it reaches 255.

2. After RED reaches 255 RED gets set to 0 and GREEN gets added up by one (GREEN ++).

3. The RED channel gets added up again like in step 1 until 255 and then step 2 follows again.

4. If GREEN is 255 the same method is used for BLUE means that one gets added to BLUE while GREEN and RED will be set to 0 again. Then step 1 again.

5. After all channels in the first Pixel are 255 the second pixel gets one up on its RED channel. Then it should begin by step 1 again until the second Pixel has a value of 255 on RED, what will set RED back to 0 and GREEN gets one up on the second pixel and so on and so on....

I'm sorry for my bad english and for my limited Java-knowledge.

This is my whole code so far(Stuff in comments is either not important in the project no more, not ready to use or i don't understand how to use it xD):

    import javax.swing.JFrame;
//import javax.swing.JLabel;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
//import java.awt.image.BufferedImage;

public class Quadrat 
{   
  public static void main (String[] args)
  { int x = 100;
    int y = 0;
    int z = 0;
    int Max = 255;
    int height = 500;
    int width = 500;

    if (x < Max){
    x ++;
    } else {
        x = 0;
        y ++;
    }
    if (y > Max){
        y = 0;
        z ++;
        } 

    if (z > Max){
        z = 0;
        } 


    JFrame Bild = new JFrame("Bildergenerator");
    Bild.setSize(width,height);
    Bild.setVisible(true);


    Color Kartoffel = new Color(x, y, z, 255);
    BufferedImage Test = new BufferedImage(300, 200, 
    BufferedImage.TYPE_INT_ARGB);
    Graphics graphics = Test.getGraphics();
    graphics.setColor(Kartoffel);
    graphics.fillRect(100, 100, 100, 100);
    graphics.dispose();
    Test.setRGB(1, 1, Kartoffel.getRGB());

  }


    /*System.out.println(x);
    System.out.println(y);
    System.out.println(z);*/
    //img.setRGB(x,y,z);




/*    JFrame Test = new JFrame("Jframe1");
      JLabel Label = new JLabel("");
      Test.add(Label);
      Test.setSize(xx,yy);
      Test.setVisible(true);
      Test.setLocation(x/2-(xx/2), y/2-(yy/2));*/



  /* JFrame Hyaeaeae = new JFrame("BurrScurrSWAG");
      Hyaeaeae.setSize(1000,1000);
      Hyaeaeae.setVisible(true);
      Hyaeaeae.getContentPane().setBackground( Color.RED);*/




    }

I'll hope you can help me in any way and if so i'm very thankful! Thank you for your Attention! Have a nice day! c:

Answer 1

You need to create the timer for this as your code is just changing on the first iteration on startup after this nothing is changed so a timer to make sure increments keep on applied on variables

package javatestapp;

import java.awt.Color;
import java.util.Timer;
import java.util.TimerTask;
import javax.swing.JFrame;

public class JavaTestApp extends TimerTask
{
    static int x = 100;
    static int y = 0;
    static int z = 0;
    static int Max = 255;
    static int height = 500;
    static int width = 500; 
    static JFrame frame;

    public static void main(String[] args)
    {
        InitFrame();
    }

    public static void incrementValues()
    {
        if (x < Max)
        {
           x ++;
        }
        else
        {
           x = 0;
           y ++;
        }

        if (y > Max)
        {
           y = 0;
           z ++;
        } 

        if (z > Max)
        {
          x = 0;
          y = 0;
          z = 0;
        }
    }

    public static void genImage()
    {
        Color color = new Color(x,y,z,255);
        frame.getContentPane().setBackground(color);
    }

    public static void InitFrame()
    {
        frame = new JFrame("Bildergenerator");
        frame.setSize(width,height);
        frame.setVisible(true);

        Timer timer = new Timer(true);
        TimerTask timerTask = new JavaTestApp();
        timer.scheduleAtFixedRate(timerTask, 0, 10);
    } 

    @Override
    public void run()
    {
        incrementValues();
        genImage();
    }
}