import java.awt.*;
import java.applet.*;
import java.awt.*;

class Sphere extends Thread implements Runnable {
 Applet app;
 long d;
 Point3D_sp c;
 Color cl1,cl2,cl3;
 
 public Sphere(long x,long y,long z,long d,Color cl){
  c=new Point3D_sp(x,y,z);
  this.d=d;
  cl1=cl.darker();
  cl2=cl;
  cl3=cl.brighter();
 }
 public Sphere(){
  c=Point3D_sp.ORIGIN;
  d=10;
  cl2=Color.blue;
  cl1=cl2.darker();
  cl3=cl2.brighter();
 }
 public Point3D_sp getCenter(){
  return c;
 }
 public long getSize(){
  return d;
 }
 public Color getColor(){
  return cl2;
 }
 public void resize(long nd){
  d=nd;
 }

 public void render(Graphics g,Dimension dm){
  Point gc=new Point(dm.height/2,dm.width/2);
  Color col=g.getColor();
  g.setColor(cl1);
  int fov=80;
  long dx=(long)((gc.x)/Math.tan(fov/2));
  long dy=(long)((gc.y)/Math.tan(fov/2));
  g.fillOval(gc.x+(Math.round((dx*c.x)/(c.z+gc.x*2))),
             gc.y+(Math.round((dx*c.y)/(c.z+gc.y*2))),
             Math.round(.1f*(d)*3500/(500-c.z)),Math.round(.1f*(d)*3500/(500-c.z)));
  g.setColor(cl2);
  g.fillOval(gc.x+(Math.round((dx*c.x)/(c.z+gc.x*2)))+(Math.round(d/12)),
             gc.y+(Math.round((dx*c.y)/(c.z+gc.y*2)))+(Math.round(d/12)),
             Math.round((.1f*(d)*(3500/(500-c.z)*5))/9),Math.round((.1f*(d)*(3500/(500-c.z)*5))/9));
  g.setColor(cl3);
  g.fillOval(gc.x+(Math.round((dx*c.x)/(c.z+gc.x*2)))+(Math.round(d/8)),
             gc.y+(Math.round((dx*c.y)/(c.z+gc.y*2)))+(Math.round(d/8)),
             Math.round(.1f*(d)*(3500/(500-c.z)))/3,Math.round(.1f*(d)*(3500/(500-c.z)))/3);

  g.setColor(col);
  
 }

 
}