Main.java

import java.awt.EventQueue;
import java.util.Random;

public class Main {

    public static void main(String[] args) {

        int sceneWidth = 800;
        int sceneHeight = 800;

        // init data
        int N = 10;
        Circle[] circles = new Circle[N];
        int R = 50;

        for(int i = 0 ; i < N ; i ++ ) {
            int x = (int)(Math.random()*(sceneWidth-2*R)) + R;
            int y = (int)(Math.random()*(sceneHeight-2*R)) + R;
            int vx = (int)(Math.random()*11) - 5;
            int vy = (int)(Math.random()*11) - 5;
            circles[i] = new Circle(x, y, R, vx, vy);
        }

        EventQueue.invokeLater(() -> {
            AlgoFrame frame = new AlgoFrame("Welcome", sceneWidth,sceneHeight);

            new Thread(() -> {
                while(true) {
                    // 绘制数据
                    frame.render(circles);
                    AlgoVisHelper.pause(20);

                    // 更新数据
                    for(Circle circle : circles)
                        circle.move(0, 0, sceneWidth, sceneHeight);
                }
            }).start();
        });

    }
}