java学习之java模拟太阳系简单实现

项目要求：

1.      实现宇宙太空和太阳的显示

2.      实现地球的轨道运行

3.      实现月球的轨道

4.      实现其他行星的轨道运行

package ray.solar;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;

import ray.util.GameUtil;

public class Planet extends Star{

double a;
double b;
double speed;
double degree;
Star center;

boolean satillite;

@Override
public void draw(Graphics g) {
//super.draw(g);
/*g.drawImage(img, (int)x, (int)y,null);*/
super.draw(g);
if(!satillite){
drawTrace(g);
}

move();
}
public void move(){
x = (center.x+center.width/2)+a*Math.cos(degree);
y = (center.y+center.height/2)+b*Math.sin(degree);
degree +=speed;
}
public void drawTrace(Graphics g){
double ox,oy,owidth,oheight;
owidth = 2*a;
oheight = 2*b;
ox = (center.x+center.width/2)-a;
oy = (center.y+center.height/2)-b;
Color color =g.getColor();
g.setColor(Color.blue);
g.drawOval((int)ox, (int)oy, (int)owidth, (int)oheight);
g.setColor(color);

}
public Planet(String path,double a, double b, double speed, Star center) {
//super();
super(GameUtil.getImage(path));
this.a = a;
this.b = b;
this.speed = speed;
this.center = center;
this.x = center.x+a;
this.y = center.y;
/*this.img = GameUtil.getImage(path);

this.width = img.getWidth(null);
this.height = img.getHeight(null);*/
}

public Planet(String path,double a, double b, double speed, Star center, boolean satillite) {
// super();
/*this.a = a;
this.b = b;
this.speed = speed;
this.degree = degree;
this.center = center;*/

this(path, a, b, speed, center);

this.satillite = satillite;
}
public Planet() {
super();

}

/*public Planet(Image img, double x, double y) {
super(img, x, y);

}

public Planet(String path, double x, double y) {
super(path, x, y);

}*/

}


代码已经上传到GitHub上嘻嘻，GitHub：https://github.com/Strivema/SolarSystem
代码不是很完善，还请各位大佬指正。