如何对象素点着色java.txt

如何对象素点着色java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class PixelSpot extends Canvas implements MouseListener{
    static int width=400,
        height=400;
    Color color=null;
    int x,y;
    int[] pixels=new int[width*height];//象素矩陣
    
    public PixelSpot(){
        color=Color.RED;
        addMouseListener(this);
    }
    public void paint(Graphics g){
        setBackground(Color.BLACK);
        //將象素矩陣中的東西畫齣來:
    }
    public void mouseClicked(MouseEvent e){

    }
    private void spot(int x,int y){
        int pos=y*width+x;//象素矩陣中相應的數組下標
        
        
        //如果不用象素矩陣,則直接畫就可以勒,如下:
        Graphics g=getGraphics();
        g.setColor(Color.red);
        g.drawLine(x,y,x,y);
        //但是一種更好的辦法,因為上麵的辦法並不強大.
        //這個稍復雜一些.這裏先不寫.
        
    }
    
    public void mousePressed(MouseEvent e) {
        x=e.getX();
        y=e.getY();
        System.out.println(x+":"+y);
        spot(x,y);      
    }
    public void mouseReleased(MouseEvent e) {
        
    }
    public void mouseEntered(MouseEvent e) {
        
    }
    public void mouseExited(MouseEvent e) {
        
    }
    
    public static void main(String args[]){
        JFrame jf=new JFrame();
        jf.getContentPane().add(new PixelSpot());
        jf.setSize(width,height);
        jf.setVisible(true);
    }
}