swing203不规则形状绘制

最新推荐文章于 2022-07-23 09:43:09 发布

原创

最新推荐文章于 2022-07-23 09:43:09 发布 · 216 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#swing

本文详细介绍了如何使用Swing进行不规则形状的绘制，包括圆弧、直线与圆弧的拼接、标准五角星的绘制以及如何实现透明背景，是Swing图形编程的一个实践教程。

不规则形状绘制

在这里插入图片描述

package my;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.LinearGradientPaint;
import java.awt.MultipleGradientPaint.CycleMethod;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Path2D;
import java.awt.geom.Point2D;
import java.util.Calendar;

import javax.imageio.ImageIO;
import javax.swing.JPanel;


public class MyPanel extends JPanel
{
   
   

    public MyPanel()
    {
   
   
    }

    @Override
    protected void paintComponent(Graphics g)
    {
   
   
        int width = getWidth();
        int height = getHeight();
        Graphics2D g2d = (Graphics2D) g;

        // 平滑绘制 （ 反锯齿 )
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setPaint(Color.white);
        g2d.fillRect(0, 0, width, height);

        // 创建一个Path
        Path2D outline = new Path2D.Double();
        outline.moveTo(50, 10);  // 起点
        outline.lineTo(150,60);  // 直线连接到下一点
        outline.lineTo(100,120);
        outline.lineTo(40,100);
        outline.lineTo(10,40);
        outline.closePath(); // 收尾闭合

        Color fillColor = Color.GREEN;
        g2d.setPaint(fillColor);
        g2d.draw(outline);

    }


}

圆弧

在这里插入图片描述

package my;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.LinearGradientPaint;
import java.awt.MultipleGradientPaint.CycleMethod;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Path2D;
import java.awt.geom.Point2D;
import java.util.Calendar;

import javax.imageio.ImageIO;
import javax.swing.JPanel;


public class MyPanel extends JPanel
{
   
   

    public MyPanel()

最低0.47元/天解锁文章