Thursday 3 January 2013

Zig Zag motion

On clicking the start button
Changed the ball's color to hgb

Using stop button






Using java swings ,I tried to make the zig zag motion  of a ball when it strikes the boundaries of the rectangle on clicking the "start" button It has a "stop" button and another button to change the ball's color to HGB.
The code is quite simple .First of all create a frame using JFrame as follow
JFrame a = new JFrame("Zig Zag");
After declaring its attributes ,create a class  say zigzag which inherits JPanel and another class say bounce which inherits JPanel and an interface ActionListener.Now declare an object of class bounce say bounce b;
After that declare the constructor zigzag() as follow
Before clicking the start button
b = new bounce();
JButton startButton = new JButton("Start");
JButton hgbButton = new JButton("Change color to HGB");
JButton stopButton = new JButton("Stop");
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.X_AXIS));
buttonPanel.add(startButton);
buttonPanel.add(hgbButton);
buttonPanel.add(stopButton);
 stopButton.setText("Stop now !");
this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
this.add(buttonPanel);

this.add(b);
Now,for the start button set animation to true and for stop button set animation to false .To change the color to hgb use :
b.setBallColor(Color.getHSBColor(TOP_ALIGNMENT, TOP_ALIGNMENT, TOP_ALIGNMENT));
 Now,inside the class bounce define the radius,diameter ,velocity across Xaxis and Yaxis , paint()..