Java学习：使用Graphics2D类画的简易土星图案
画好的图案：Saturn.png
作图代码：Saturn_20150215.java（java版本：1.8.0_25）
import java.awt.image.BufferedImage;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class Saturn_20150215
{
public static void main(String[] args)
{
int width = 900;
int height = 500;
String savepath = "D:\\Saturn.png";
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = bi.createGraphics();
g2d.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
//画背景
g2d.setPaint(Color.BLACK);
g2d.fillRect(0, 0, width, height);
//图片标题
g2d.setPaint(Color.WHITE);
g2d.setFont(new Font("Monospaced", Font.BOLD, 36));
g2d.drawString("SATURN BY TSYBIUS 2015/02/25", 50, 50);
g2d.rotate(-1 * Math.PI / 10);
//光环的上半环
for(int i = 0; i < 10; i++)
{
g2d.setStroke(new BasicStroke(5 - i / 2));
g2d.setPaint(new Color(255, 97 + i * 5, 0));
g2d.drawArc(80 + i * 9, 250 + i * 2, 530 - i * 18, 200 - i * 4, 0, 180);
g2d.drawArc(80 - i * 9, 250 - i * 2, 530 + i * 18, 200 + i * 4, 0, 180);
}
//星球
g2d.setPaint(new Color(205, 113, 0));
g2d.fillOval(190, 210, 300, 300);
//光环的下半环
for(int i = 0; i < 10; i++)
{
g2d.setStroke(new BasicStroke(5 - i / 2));
g2d.setPaint(new Color(255, 97 + i * 5, 0));
g2d.drawArc(80 + i * 9, 250 + i * 2, 530 - i * 18, 200 - i * 4, 180, 180);
g2d.drawArc(80 - i * 9, 250 - i * 2, 530 + i * 18, 200 + i * 4, 180, 180);
}
g2d.rotate(Math.PI / 10);
//绘制各个卫星
g2d.setStroke(new BasicStroke(5));
g2d.setPaint(Color.WHITE);
//g2d.drawLine(0, height / 2, width, height / 2);
//g2d.drawLine(width / 2, 0, width / 2, height);
g2d.setFont(new Font("Monospaced", Font.BOLD, 16));
g2d.fillOval(700, 270, 10, 10);
g2d.fillOval(720, 260, 10, 10);
g2d.drawString("Janus & Epimetheus", 700, 255);
g2d.fillOval(600, 370, 10, 10);
g2d.drawString("Mimas", 600, 360);
g2d.fillOval(300, 450, 10, 10);
g2d.drawString("Enceladus", 300, 440);
g2d.fillOval(100, 170, 10, 10);
g2d.drawString("Tethy", 100, 160);
g2d.fillOval(80, 155, 10, 10);
g2d.drawString("Dione", 80, 145);
g2d.fillOval(30, 460, 10, 10);
g2d.drawString("Rhea", 30, 450);
g2d.fillOval(830, 470, 10, 10);
g2d.drawString("Titan", 830, 460);
g2d.fillOval(880, 10, 10, 10);
g2d.drawString("Hyperon", 820, 35);
g2d.dispose();
//保存图片
try
{
ImageIO.write(bi, "PNG", new File(savepath));
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
END