Chapter 10, Problem 27PP

Program Plan Intro

Animation of shapes

Program plan:

• In a file “MoveableShape.java”, import necessary package, and create an interface “MoveableShape”,
  • Declare the method “draw()”.
  • Declare the method “moves()”.
• In a file “MoveableRectangle.java”, import the necessary packages and create a class “MoveableRectangle” that implements “MoveableShape” interface.
  • Declare the necessary variables.
  • Define the constructor to set the initial x, y, width and height value.
  • Define the method “draw ()” to draw the car,
    • Create “Rectangle” object.
    • Call the method “draw()”.
      • Define the method “moves ()” that moves x and y position.
• In a file “Car.java”, import the necessary packages and create a class “Car” that implements “MoveableShape” interface.
  • Declare the necessary variables.
  • Define the constructor to set the initial x, and y positions.
  • Define the method “draw ()” to draw the car,
    • Create “Rectangle” object.
    • Create “Ellipse2D” object.
    • Create “Ellipse2D” object.
    • Create “Point2D” object for the bottom of the front wind shield.
    • Create “Point2D” object for the front of the roof.
    • Create “Point2D” object for the rear of the roof.
    • Create “Point2D” object for the bottom of the rear wind shield.
    • Create “Line2D” object for the top roof.
    • Create “Line2D” object for the rear wind shield.
    • Call the method “draw()” to draw the car body.
    • Call the method “draw()” to draw the car’s front tire.
    • Call the method “draw()” to draw the car’s front wind shield.
    • Call the method “draw()” to draw the car’s roof top.
    • Call the method “draw()” to draw the car’s rear wind shield.
      • Define the method “moves()” that translate the x and y position.
• In a file “AnimationPanel.java”, import necessary packages, and create a class “AnimationPanel”,
  • Declare the “ArrayList” for “MoveableShape” objects.
  • Define the constructor,
    • Initialize the list.
    • Create a class “TimerListener”,
      • Define the method “actionPerformed()”,
        • Iterate over the shapes,
        • • Call the method “moves()” with “(1,0)” as arguments.
        • Call the method “repaint()”.
    • Create an object for “TimerListener”,
    • Set the milliseconds between the timer ticks.
    • Create the object for “Timer”.
    • Call the method “start()”.
      • • • • Define the method “add()” that calls “add()” method to add the car component to the list.
            • Define the method “paintComponent ()”,
              • Call the super class method.
              • Create “Graphics2D” object.
              • Create loop to iterate over shapes,
                • Call the method “draw()”.
• In a file “AnimationView.java”, import necessary packages, and create a class “AnimationView”,
  • Declare and initialize the frame’s width and height.
  • Define the “main()” method.
    • Create “JFrame” object.
    • Set the frame size.
    • Set the frame title.
    • Set the operation on the frame.
    • Create the “ArrayList”.
    • Call the method “add()” to add the first “Car” object.
    • Call the method “add()” to add the first “MoveableRectangle” object.
    • Call the method “add()” to add the second “Car” object.
    • Call the method “add()” to add the second “MoveableRectangle” object.
    • Add the component into the frame.
    • Make the frame visible.