求消除画图闪烁办法

Question

RT，给个视例代码，谢谢！

Answer 1

双缓冲
先声明个Graphics,把图片画在这个Graphics上面
再把这个Graphics刷回屏幕的Graphics

Answer 2

你说的是不是抗锯齿 试试这个Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHints(new RenderingHints(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON));
g2d.draw...如果不是抗锯齿就参看RenderingHints的API添加其他的renderhints试试

Answer 3

import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class TankClient extends Frame{
public final static int GAME_WIDTH=800;
public final static int GAME_HEIGHT=600;
Image offScreenImage=null;

int x=30,y=30;
public void paint(Graphics g) {
Color c=g.getColor();
g.setColor(Color.RED);
g.fillOval(x,y,50,50);
g.setColor(c);

y=y+10;
}
        //双缓冲
public void update(Graphics g) {
if(offScreenImage==null){
offScreenImage=this.createImage(GAME_WIDTH,GAME_HEIGHT);
}
Graphics gOffScreen=offScreenImage.getGraphics();
Color c=gOffScreen.getColor();
gOffScreen.setColor(Color.GREEN);

gOffScreen.fillRect(0,0,GAME_WIDTH,GAME_HEIGHT);
gOffScreen.setColor(c);
paint(gOffScreen);
g.drawImage(offScreenImage,0,0,null);
}
public void lauchFrame(){
this.setLocation(0,0);
this.setSize(GAME_WIDTH,GAME_HEIGHT);
this.setTitle("TankWar");
this.addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e) {
System.exit(0);
}

});
this.setResizable(false);
this.setBackground(Color.GREEN);
setVisible(true);

new Thread(new paintThread()).start();
}
private class paintThread implements Runnable{
public void run() {

while(true){
repaint();
try {
Thread.sleep(50);
} catch (InterruptedException e) {

e.printStackTrace();
}
}


}

}
public static void main(String[] args) {
TankClient tc=new TankClient();
tc.lauchFrame();
}}

Answer 4

private Image doubleBuffer;
public void update(Graphics g){
Dimension size=getSize();
if(doubleBuffer.getWidth(this)!=size.width||doubleBuffer.getHeight(this)!=size.height)
{ doubleBuffer=createImage(size.width,size.height);
}
if(doubleBuffer!=null){
//绘制到双缓存区
Graphics g2=doubleBuffer.getGraphics();
paint(g2);
g2.dispose();
//将双缓存复制到屏幕
g.drawImage(doubleBuffer,0,0,null);
}
else
{//不要双缓存，只绘制屏幕
paint(g);
}
}
public void paint(Graphics g){
//在此绘图
}