CISC 3120
Design and Implementation of Software Applications I
Lab 7 - Threads & Geometric Transformations

Description and Objective

• 1. Create the GUI and draw an arrow icon in the canvas as shown in the picture below:
  
  
  
  
  • The arrow can be drawn as a Polygon object by defining the (x,y) coordinates of the following points:

                   2
                   |\
    0--------------1 \   
    |                 3
    6--------------5 /  
                   |/
                   4
    	  

  • The "Blink" button should run a thread that draws the icon in fixed intervals, which will make the icon look like it appears and disappears. Take a look at the BlinkingLight.java example that we did in class.
  • The text of the button should toggle between "Blink" and "Stop".
  • Do not worry about making your GUI look exactly like the one shown in the image. The functionality is more important for this lab.
  • The buttons at the bottom of the window do not need to be functional for this part
• 2. Add transformation functionality to the buttons and keys.
  • In order to add these functionalities, first you have to define ActionListener objects for each button, then override the paintComponent method of the drawing area and use the Graphics2D and AffineTransform objects to modify the scale, rotation, and position of the arrow shape.
  • The buttons should cause the icon to be redrawn close/far and rotate clockwise/counter-clockwise.
  • When the program starts the text on top of the drawing area should inform the user to click on the area to move the icon. Once the area is clicked this text should change, explaining how to move the icon (using arrow keys, or a,w,s,d keys). In order to get this functionality to work, you have to implement both the FocusListener and the MouseListener interfaces in addition to the KeyListener interface. Once the mouse is clicked, call requestFocus() method in order to process keyEvents.
  • As an example, below picture shows the GUI after applying a combination of rotate, scale and translate methods:
    
    
    
    

  What to Submit

  • Create a ZIP archive of your work. This must include all the files that are part of your work (including images for example).
  • Name your archive my-family-name.zip (so I would call file dow.zip, not john.zip).
  • Email the archive and the link to your website to me at ozgelen at sci.brooklyn.cuny.edu with subject formatted as "3120 - your name - lab #"