Java图形-一些简单的东西,比如Zelle';Python的s图形
我是Java新手,我只是想得到一些简单的东西,可能类似于Python Java类和应包含Zelle图形所包含的大部分内容 下面是一些Java Swing代码,让您开始学习。只要按住鼠标左键,此Java应用程序将使用鼠标绘制。当你松开鼠标左键时,屏幕会消失,你可以画其他东西Java图形-一些简单的东西,比如Zelle';Python的s图形,java,graphics,Java,Graphics,我是Java新手,我只是想得到一些简单的东西,可能类似于Python Java类和应包含Zelle图形所包含的大部分内容 下面是一些Java Swing代码,让您开始学习。只要按住鼠标左键,此Java应用程序将使用鼠标绘制。当你松开鼠标左键时,屏幕会消失,你可以画其他东西 import java.awt.Color; import java.awt.Graphics; import java.awt.Point; import java.awt.event.MouseEvent; import
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.event.MouseInputAdapter;
public class DrawingTest implements Runnable {
private JFrame frame;
private MyDrawPanel drawPanel;
private List<Point> points;
public DrawingTest() {
points = new ArrayList<Point>();
}
@Override
public void run() {
frame = new JFrame("Bouncing Vertices");
drawPanel = new MyDrawPanel(this);
MyListener alpha = new MyListener(this);
drawPanel.addMouseMotionListener(alpha);
drawPanel.addMouseListener(alpha);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(drawPanel);
frame.setSize(800, 600);
frame.setVisible(true);
}
public JPanel getDrawingPanel() {
return drawPanel;
}
public List<Point> getPoints() {
return points;
}
public void setPoint(int x, int y) {
points.add(new Point(x, y));
}
public void resetPoints() {
points.clear();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new DrawingTest());
}
private class MyListener extends MouseInputAdapter {
private DrawingTest drawingTest;
public MyListener(DrawingTest drawingTest) {
this.drawingTest = drawingTest;
}
@Override
public void mouseDragged(MouseEvent event) {
drawingTest.setPoint(event.getX(), event.getY());
drawingTest.getDrawingPanel().repaint();
}
@Override
public void mouseReleased(MouseEvent event) {
drawingTest.resetPoints();
}
}
private class MyDrawPanel extends JPanel {
private static final long serialVersionUID = 1L;
private DrawingTest drawingTest;
public MyDrawPanel(DrawingTest drawingTest) {
this.drawingTest = drawingTest;
}
@Override
public void paintComponent(Graphics g) {
g.setColor(Color.WHITE);
g.fillRect(0, 0, this.getWidth(), this.getHeight());
g.setColor(Color.BLUE);
for (int i = 1; i < drawingTest.getPoints().size(); i++) {
Point p1 = drawingTest.getPoints().get(i - 1);
Point p2 = drawingTest.getPoints().get(i);
g.drawLine(p1.x, p1.y, p2.x, p2.y);
}
}
}
}
导入java.awt.Color;
导入java.awt.Graphics;
导入java.awt.Point;
导入java.awt.event.MouseEvent;
导入java.io.File;
导入java.util.ArrayList;
导入java.util.List;
导入javax.swing.JFileChooser;
导入javax.swing.JFrame;
导入javax.swing.JPanel;
导入javax.swing.SwingUtilities;
导入javax.swing.event.MouseInputAdapter;
公共类DrawingTest实现可运行{
私有JFrame;
私人MyDrawPanel drawPanel;
私人名单点;
公共绘图测试(){
points=新的ArrayList();
}
@凌驾
公开募捐{
frame=新JFrame(“反弹顶点”);
drawPanel=新的MyDrawPanel(此);
MyListener alpha=新的MyListener(此);
drawPanel.addMouseMotionListener(alpha);
drawPanel.addMouseListener(α);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(drawPanel);
框架设置尺寸(800600);
frame.setVisible(true);
}
公共JPanel getDrawingPanel(){
返回面板;
}
公共列表getPoints(){
返回点;
}
公共无效设定点(整数x,整数y){
点。添加(新点(x,y));
}
公共无效重置点(){
点。清除();
}
公共静态void main(字符串[]args){
SwingUtilities.invokeLater(newDrawingTest());
}
私有类MyListener扩展了MouseInputAdapter{
私人绘图测试绘图测试;
公共MyListener(DrawingTest DrawingTest){
this.drawingTest=drawingTest;
}
@凌驾
公共无效鼠标标记(鼠标事件){
drawingTest.setPoint(event.getX(),event.getY());
drawingTest.getDrawingPanel().repaint();
}
@凌驾
公共无效MouseEvent事件(MouseEvent事件){
drawingTest.resetPoints();
}
}
私有类MyDrawPanel扩展了JPanel{
私有静态最终长serialVersionUID=1L;
私人绘图测试绘图测试;
公共MyDrawPanel(DrawingTest DrawingTest){
this.drawingTest=drawingTest;
}
@凌驾
公共组件(图形g){
g、 setColor(Color.WHITE);
g、 fillRect(0,0,this.getWidth(),this.getHeight());
g、 setColor(Color.BLUE);
对于(int i=1;i
代码中的最后一个方法,paintComponent方法,是使用图形方法的地方