A Simple Applet to Render Sierpinski's Triangle
CMPC :: Computing :: Programming :: Java
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A Simple Applet to Render Sierpinski's Triangle
by Paul Mon Dec 07, 2009 7:38 am
- Code:
import java.applet.*;
import java.awt.*;
public class Sierpinski extends Applet
{
int width, height;
Point p1,p2,p3;
public void init()
{
width = getSize().width;
height = getSize().height;
setBackground( Color.white );
p1 = new Point( width/2, 0 );
p2 = new Point( 0, height );
p3 = new Point( width, height);
}
public void paint( Graphics g )
{
g.setColor( Color.blue );
g.drawLine( (p1.x), (p1.y), (p1.x), (p1.y) );
g.setColor( Color.green );
g.drawLine( (p2.x), (p2.y), (p2.x), (p2.y) );
g.setColor( Color.red );
g.drawLine( (p3.x), (p3.y), (p3.x), (p3.y) );
Point temp=p1;
for(int i =0; i <=1000000; i++)
{
switch(roll(3))
{
case 1:
{
g.setColor( Color.blue );
temp=temp.midpoint(p1);
g.drawLine( (temp.x), (temp.y), (temp.x), (temp.y) );
break;
}
case 2:
{
g.setColor( Color.green );
temp=temp.midpoint(p2);
g.drawLine( (temp.x), (temp.y), (temp.x), (temp.y) );
break;
}
case 3:
{
g.setColor( Color.red );
temp=temp.midpoint(p3);
g.drawLine( (temp.x), (temp.y), (temp.x), (temp.y) );
break;
}
}
}
}
public int roll(int sides)
{
return (int) Math.round( (Math.random()*sides)+1 );
}
}
Paul- Pickaxe
- Posts : 611
Re: A Simple Applet to Render Sierpinski's Triangle
by Paul Mon Dec 07, 2009 7:39 am
The Point class I wrote for this applet:
- Code:
public class Point
{
public int x,y;
public Point()
{
x = 0;
y = 0;
}
public Point( int xc, int yc )
{
x = xc;
y = yc;
}
public Point midpoint(Point between)
{
return new Point( (this.x+between.x)/2, (this.y+between.y)/2 );
}
public double distance(Point to)
{
return Math.sqrt( Math.pow(this.x-to.x,2)+Math.pow(this.y-to.y,2) );
}
}
Paul- Pickaxe
- Posts : 611
CMPC :: Computing :: Programming :: Java
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