Chapter 4, Problem 13PP

Program Plan Intro

Bully’s eye pattern

Program plan:

• Include necessary header files.
• Declare the class “BullEye” that extends application class.
  • Declare required constant variables.
  • Define the “main()” function.
    • Launch the application.
  • Override the “start ()” method.
    • Create a group, scene, canvas and graphics context.
    • Declare required variables.
    • Set the values for “x_Center”, “y_Center”, and “diameter”.
    • Loop from 0 through total number of circles.
      • Switch to the case (i % 3).
        • If the value is 0,
        • • Draw a stroke in red color.
          • Break the case.
        • If the value is 1,
        • • Draw a stroke in green color.
          • Break the case.
        • If the value is 2,
        • • Draw a stroke in blue color.
          • Break the case.
      • Draw a circle.
      • Update the value of “x_Center” and “diameter”.
  • Add the canvas.
  • Set the title.
  • Add the scene to the stage and display it.