Atanas Roussev – Senior Java Developer, UI Engineer, Web Developer Resume – Vancouver

Interesting. I’ve build few Mathematics Applets 10 years ago. Yet, I can still discover their links on internet. I’ve just found my Spirals Applet being featured at comPADRE – a Physics and Astronomy community site.

Applet is http://www.roussev.org/applets/spiral/spiral.html.

And the Spirals Algorithm is as simple as:

import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;

public class HelloSpirals extends Applet {
   int max = 100;
   int centerPosition = 150;
   double angle = 22 / (double) 128;

   public void paint( Graphics g){
      setBackground(Color.black);
      g.setColor(Color.red);

      for (int i = 0; i < max; i++) {
         int[] coordEnd = getCoordinates(i);
         int[] coordStart = getCoordinates(i - 1);
         g.drawLine(centerPosition + coordStart[0],
                         centerPosition + coordStart[1],
                         centerPosition + coordEnd[0],
                         centerPosition + coordEnd[1]);
      }
   }

   private double getAngle( int inx){
      return (inx - 1) * angle;
   }

   private int[] getCoordinates( int inx){
      double angle = getAngle(inx - 1);
      int x = (int) Math.round(inx * Math.cos(angle));
      int y = (int) Math.round(inx * Math.sin(angle));

      return new int[] { x, y };
   }
}

What a game … Reminds me so much of Nagano ‘98 finals Czech against Russia. Go Canada for the gold!

Just opened my first Git account.

http://github.com/atanasroussev

An interesting project. Looks sexy, feels unix.

Finally had a chance to post the picture of the torch relay. The Olympic fire passed few block from my house. It was such a touching moment.

Go Canada!

Go Bulgaria!

Remember your first cup of Object Oriented Java? Shape, Triangle, Circle polymorphism?

Here it’s the kewl Ruby equivalent:

class Shape
  def info
    // prints abstract method name and area. Confusing eh?
    puts "#{name} area: #{area}"
  end
end

class Triangle < Shape
  attr_reader :base, :height

  def initialize(base, height)
    super()
    @base = base
    @height = height
  end 

  def area
    return ((base * height).to_f./ 2)
  end

  def name
    return "Triangle"
  end
end

class Square < Shape
  attr_reader :height

  def initialize(height)
    super()
    @height = height
  end 

  def area
    return (height * height).to_f
  end

  def name
    return "Square"
  end
end

class Circle < Shape
  attr_reader :r
  PI = 22.to_f./7
  def initialize(r)
    super()
    @r = r
  end 

  def area
    return (PI * r * r)
  end

  def name
    return "Circle"
  end
end

if __FILE__ == $0
  g = Triangle.new(7, 7)
  g.info

  g = Square.new(7)
  g.info

  g = Circle.new(7)
  g.info
end

Result is:
Triangle area: 24.5
Square area: 49.0
Circle area: 154.0

Google never cease to surprise me. They’ve recorded the ski slopes at Whistler. http://bit.ly/9W7Xra

Go Canada!

Go Bulgaria!

{
   "response": "Unable to locate element: {"method":"id","selector":"q"}",
   "context": "{711c552c-4fac-473c-83ce-dc767ff37ff2} ",
   "commandName": "findElement",
   "isError": true
}

public class FirefoxDriver implements WebDriver ... {
   protected Object executeCommand(Class<RuntimeException> throwOnFailure,
                             Command command) {
      Response response = extension.sendMessageAndWaitForResponse(
                     throwOnFailure, command);
      context = response.getContext();
      response.ifNecessaryThrow(throwOnFailure);
......

I am constantly experiencing this bug since I got my Vaio for more than 3 years already. Whenever I quickly move images, copy/paste fast enough over the folders (and I am very quick typer), Windows Explorer crashes and ask me to report to Windows. Well, this problem is a know issue for years. 1.3 million people are screaming for help. Odd enough seems Windows 7 is plaged by the same problem?! Anyone at Microsoft paying attention? And what is the purpose of reporting this problem when when it never gets fixed.

Anyhow, being frustrated with the Windows experience I looked for my favorite Ubuntu file manager called Dolphin. After installing KDE I am happy camper with:

• NON crashing Dolphin
• More logical folder structure.
• Bookmarking

Thank you Windows. Next time try better. Meanwhile I am switching to Mac OS.