java 生成一个一直循环的正弦曲线

好的，我可以为您提供一个Java程序，它可以生成一个一直循环的正弦曲线。这个程序使用Java Swing绘制一个正弦曲线，然后使用一个线程来不断更新曲线的位置，从而让它看起来像是一直循环。请注意，这只是一个基本的代码示例，还需要根据您的具体需求进行修改：

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

public class SineWave extends JPanel implements Runnable {
    private static final int W = 640;
    private static final int H = 480;
    private static final int PAD = 20;
    private static final int MAX_X = 360;
    private static final double MAX_Y = 1.0;
    private static final int MIN_X = 0;
    private static final double MIN_Y = -1.0;
    private static final int TICK = 25;
    private static final int POINTS = MAX_X - MIN_X + 1;
    private double[] sin = new double[POINTS];
    private int[] x = new int[POINTS];
    private int[] y = new int[POINTS];
    private int dx = 1;

    public SineWave() {
        for (int i = 0; i < POINTS; i++) {
            x[i] = PAD + i;
            sin[i] = Math.sin(Math.toRadians(i));
            y[i] = (int) (H / 2 - sin[i] * H / 2);
        }
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);
        g2.drawPolyline(x, y, POINTS);
        g2.setPaint(Color.red);
        for (int i = 0; i < POINTS; i += TICK) {
            int x0 = x[i];
            int y0 = y[i];
            g2.drawLine(x0, y0 - 4, x0, y0 + 4);
            g2.drawString(String.valueOf(i), x0 - 6, y0 + 16);
        }
        g2.drawLine(PAD, H / 2, W - PAD, H / 2);
        g2.drawLine(PAD, PAD, PAD, H - PAD);
    }

    public Dimension getPreferredSize() {
        return new Dimension(W, H);
    }

    public void run() {
        while (true) {
            for (int i = 0; i < POINTS; i++) {
                x[i] += dx;
                y[i] = (int) (H / 2 - sin[(i + dx) % POINTS] * H / 2);
            }
            repaint();
            try {
                Thread.sleep(50);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        SineWave wave = new SineWave();
        f.add(wave);
        f.pack();
        f.setVisible(true);
        Thread t = new Thread(wave);
        t.start();
    }
}

这个程序使用一个while循环和一个线程来不断更新曲线的位置。它将曲线向右移动一个像素，然后重新计算曲线上每个点的Y坐标。当曲线的最右侧到达屏幕的边缘时，它会重新从左侧开始绘制。希望这个代码对您有所帮助！