Bresenham 算法使用 Java应用程序 绘制直线的示例代码

以下是 Bresenham 算法使用 Java 应用程序绘制直线的示例代码：

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

public class Bresenham extends JFrame {

    public Bresenham() {
        super("Bresenham's Line Drawing Algorithm");

        setSize(500, 500);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    public void paint(Graphics g) {
        // Set the color to blue
        g.setColor(Color.blue);

        // Call the drawLine() method using Bresenham algorithm
        drawLine(50, 50, 200, 200, g);
    }

    private void drawLine(int x1, int y1, int x2, int y2, Graphics g) {
        int dx = Math.abs(x2 - x1);
        int dy = Math.abs(y2 - y1);
        int sx, sy;

        if (x1 < x2) {
            sx = 1;
        } else {
            sx = -1;
        }

        if (y1 < y2) {
            sy = 1;
        } else {
            sy = -1;
        }

        int err = dx - dy;

        while (true) {
            g.drawLine(x1, y1, x1, y1);

            if (x1 == x2 && y1 == y2) {
                break;
            }

            int e2 = 2 * err;

            if (e2 > -dy) {
                err -= dy;
                x1 += sx;
            }

            if (e2 < dx) {
                err += dx;
                y1 += sy;
            }
        }
    }

    public static void main(String[] args) {
        Bresenham demo = new Bresenham();
        demo.setVisible(true);
    }
}

该程序使用 Bresenham 算法绘制一条直线，将颜色设置为蓝色，并在窗口中绘制出来。