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java视觉特效代码 java视觉识别
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求java做动画代码
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class TestImage extends Frame
{
private static final long serialVersionUID = 1L;
private static boolean PRESSED = false;
private static int pointX = 0;
private static int pointy = 200;
private static int RIGHT_GO = 0;
private static int LEFT_GO = 0;
private static int DIR = 0;
private static int ANGLE = 0;
private static int W = 50;
private static int H = 60;
private _Canvas canvas = null;
public TestImage ()
{
add (canvas = new _Canvas ());
setIgnoreRepaint (true);
requestFocus ();
}
public class _Canvas extends Canvas implements Runnable
{
private static final long serialVersionUID = 1L;
private BufferedImage bi = null;
private Image bufferedImage = null;
private Thread thread = null;
private long sleepTime = 10;
public _Canvas ()
{
try
{
bi = ImageIO.read (new File ("go.png"));
}
catch (IOException e)
{}
setBackground (Color.BLACK);
requestFocus ();
addKeyListener (new KeyListener ()
{
@Override
public void keyTyped ( KeyEvent e )
{}
@Override
public void keyReleased ( KeyEvent e )
{
RIGHT_GO = 0;
PRESSED = false;
}
@Override
public void keyPressed ( KeyEvent e )
{
// 38 40 37 39上下左右
DIR = e.getKeyCode ();
PRESSED = true;
}
});
}
@Override
public void paint ( Graphics g )
{
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint (RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.drawImage (rotateImage (bi.getSubimage (RIGHT_GO, LEFT_GO, W, H), ANGLE, true), pointX, pointy, W, H,
this);
g2d.dispose ();
}
@Override
public void update ( Graphics g )
{
if (null == bufferedImage)
{
bufferedImage = createImage (getWidth (), getHeight ());
}
Graphics bufferedG = bufferedImage.getGraphics ();
bufferedG.clearRect (0, 0, getWidth (), getHeight ());
paint (bufferedG);
bufferedG.dispose ();
g.drawImage (bufferedImage, 0, 0, this);
g.dispose ();
}
public void start ()
{
thread = new Thread (this);
thread.setName ("TestImage");
thread.setPriority (Thread.MIN_PRIORITY);
thread.start ();
}
public synchronized void stop ()
{
thread = null;
notify ();
}
@Override
public void run ()
{
Thread me = Thread.currentThread ();
while (thread == me !isShowing () || getSize ().width == 0)
{
try
{
Thread.sleep (555);
}
catch (InterruptedException e)
{
return;
}
}
while (thread == me isShowing ())
{
if (PRESSED)
{
try
{
if (DIR == 39)
{
RIGHT_GO = RIGHT_GO + 50;
LEFT_GO = 0;
pointX = pointX + 1;
if (pointX 420)
{
ANGLE = 90;
pointX--;
pointy--;
W = 60;
H = 50;
}
if (RIGHT_GO 50)
{
RIGHT_GO = 0;
}
}
else if (DIR == 37)
{
pointX = pointX - 1;
RIGHT_GO = RIGHT_GO + 50;
LEFT_GO = 60;
if (pointX 0)
{
ANGLE = -90;
pointX++;
pointy--;
W = 60;
H = 50;
}
if (RIGHT_GO 50)
{
RIGHT_GO = 0;
}
}
else if (DIR == 38)
{
W = 50;
H = 60;
pointy = 150;
ANGLE = 0;
RIGHT_GO = 100;
}
else if (DIR == 40)
{
W = 50;
H = 60;
ANGLE = 0;
pointy = 200;
RIGHT_GO = 0;
}
Thread.sleep (sleepTime);
repaint ();
}
catch (InterruptedException e)
{
break;
}
}
else
{
RIGHT_GO = RIGHT_GO + 50;
LEFT_GO = 0;
pointX = pointX + 1;
if (RIGHT_GO 50)
{
RIGHT_GO = 0;
}
if (pointX 500)
{
pointX = 0;
}
try
{
Thread.sleep (sleepTime);
repaint ();
}
catch (InterruptedException e)
{
break;
}
}
}
thread = null;
}
}
/**
* 旋转图像为指定角度
*
* @param degree
* @return
*/
public static BufferedImage rotateImage ( final BufferedImage image, final int angdeg, final boolean d )
{
int w = image.getWidth ();
int h = image.getHeight ();
int type = image.getColorModel ().getTransparency ();
BufferedImage img;
Graphics2D graphics2d;
( graphics2d = ( img = new BufferedImage (w, h, type) ).createGraphics () ).setRenderingHint (
RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
graphics2d.rotate (d ? -Math.toRadians (angdeg) : Math.toRadians (angdeg), w / 2, h / 2);
graphics2d.drawImage (image, 0, 0, null);
graphics2d.dispose ();
return img;
}
public static void main ( String[] args )
{
EventQueue.invokeLater (new Runnable ()
{
@Override
public void run ()
{
final TestImage ti = new TestImage ();
ti.setSize (new Dimension (500, 300));
ti.setLocationRelativeTo (null);
ti.addWindowListener (new WindowAdapter ()
{
@Override
public void windowClosing ( WindowEvent e )
{
System.exit (0);
}
@Override
public void windowDeiconified ( WindowEvent e )
{
ti.canvas.start ();
}
@Override
public void windowIconified ( WindowEvent e )
{
ti.canvas.stop ();
}
});
ti.setResizable (false);
ti.canvas.start ();
ti.setVisible (true);
}
});
}
}
相关问答
Q1: 实现星星闪动的java代码
package panel;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import javax.swing.JPanel;
import main.MainTank;
public class TipPanel extends JPanel implements Runnable{
/**
*
*/
private static final long serialVersionUID = 1L;
//偶数打印，画面板
int time=0;
public void paintComponent(Graphics g){
super.paint(g);
g.fillRect(0, 0, MainTank.getWidthOfGame(), MainTank.getHeightOfGame());//绘制提示窗口
if (time%2==0){//偶数打印，画面板，造成闪烁效果
g.setColor(Color.ORANGE);
Font font=new Font("华文楷体",Font.BOLD,30);
g.setFont(font);//选用字体
g.drawString("Ready", 140, 130);
}
}
@Override
public void run() {
while (true){
try{
Thread.sleep(250);
}catch (Exception e){
e.getMessage();
}
time++;//绘图开关
this.repaint();
}
}
}//TipPanel
类似的，修改下就行
Q2: Android如何纯java代码实现字体阴影效果
Android实现纯java代码字体阴影效果，主要是通过activity的draw方法，进行重新绘制，如下代码：
package canvas.test;
import android.app.Activity;
import android.os.Bundle;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.view.View;
public class ShaderEffect extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new ImageEffect(this));
}
class ImageEffect extends View{
Paint paint;
public ImageEffect (Context context){
super(context);
paint = new Paint();//初始化画笔，为后面阴影效果使用。
paint.setAntiAlias(true);//去除锯齿。
paint.setShadowLayer(5f, 5.0f, 5.0f, Color.BLACK);//设置阴影层，这是关键。
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
}
@Override
public void onDraw(Canvas canvas){
super.onDraw(canvas);
int posX = 20;
int posY = 50;
int PicWidth,PicHegiht;
Drawable drawable = getResources().getDrawable(R.drawable.button);
Drawable dbe = getResources().getDrawable(R.drawable.button).mutate();//如果不调用mutate方法，则原图也会被改变，因为调用的资源是同一个，所有对象是共享状态的。
Drawable drawTest = getResources().getDrawable(R.drawable.button);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.button);
PicWidth = drawable.getIntrinsicWidth();
PicHegiht = drawable.getIntrinsicHeight();
drawTest.setBounds(posX, (2 * posY) + PicHegiht, posX + PicWidth, (2 * posY) + 2 * PicHegiht );
drawable.setBounds(posX,posY,posX+PicWidth,posY+PicHegiht);
dbe.setBounds(0, 0, PicWidth, PicHegiht);
canvas.drawColor(Color.WHITE);//设置画布颜色
canvas.save(Canvas.MATRIX_SAVE_FLAG);
dbe.setColorFilter(0x7f000000,PorterDuff.Mode.SRC_IN);
canvas.translate(posX + (int)(0.9 * PicWidth/2), posY + PicHegiht/2);//图像平移为了刚好在原图后形成影子效果。
canvas.skew(-0.9F, 0.0F);//图像倾斜效果。
canvas.scale(1.0f, 0.5f);//图像（其实是画布）缩放，Y方向缩小为1/2。
dbe.draw(canvas);//此处为画原图像影子效果图，比原图先画，则会在下层。
drawable.clearColorFilter();
canvas.restore();
canvas.save(Canvas.MATRIX_SAVE_FLAG);
drawable.draw(canvas);//此处为画原图像，由于canvas有层次效果，因此会盖在影子之上。
canvas.restore();
//默认无效果原图
canvas.save(Canvas.MATRIX_SAVE_FLAG);
drawTest.draw(canvas);
canvas.restore();
//图片阴影效果
canvas.save(Canvas.MATRIX_SAVE_FLAG);
//Rect rect = new Rect(2*posX + PicWidth, 2*posY + PicHegiht, 2*posX + 2*PicWidth, 2*posY + 2*PicHegiht);//此为理论上的阴影图坐标
Rect rect = new Rect(2*posX + PicWidth + 3, 2*posY + PicHegiht + 3, 2*posX + 2*PicWidth - 2, 2*posY + 2*PicHegiht - 2);
//由于图片的实际尺寸比显示出来的图像要大一些，因此需要适当更改下大小，以达到较好的效果
RectF rectF = new RectF(rect);
canvas.drawRoundRect(rectF, 10f, 10f, paint);//在原有矩形基础上，画成圆角矩形，同时带有阴影层。
canvas.drawBitmap(bmp, 2*posX + PicWidth, 2*posY + PicHegiht, null);//画上原图。
canvas.restore();
}
}
}
Q3: 怎么用java代码模拟一张图片
用java代码模拟一张图片可以这样操作java视觉特效代码：1.创建BufferedImage类
2.根据BufferedImage类得到一个Graphics2D对象
3.根据Graphics2D对象进行逻辑操作
4.处理绘图
5.将绘制好java视觉特效代码的图片写入到图片
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