How to Use the Recursive Applet

Notations

The left panel is the drawPanel and user must draw Base cases, NonBase cases, recursive points and Handle points on the drawPanel.

The right panel is the recPanel, the where points and recusive images are on the recPanel.

Handle points are in red

Recursive points are in cyan.

NonBase cases are in blue.

Base cases are in black

The user must define the n.

The where points on recPanel are in green.

For drawing line,the user must drag the mouse from the line's start point to end point on the drawPanel

For drawing circle, just like line, you must drag your mouse from a point.

For drawing arc, the user must choose three points (COUNTER CLOCKWISE) on the drawPanel.

Choose a file, which includes handle points, base case, non-base case and recursive points, on the File's Name drop down list, declare n and click on Recursive button to determine the Where points .

The format of the files must be in the following order: handle points - base case (if any) - "done" - nonbase cases (if any) - "done" - recursive points - "done"

On the very left corner of the applet, user can see currently what state the applet is in, Base or NonBase or Handle Points or recurse Points .

Warning: If coordinates of any part of recursive picture goes beyound the boundaries of the right panel, then that part of the picture wouldn't be drawn, so try to keep the recursive picture inside the boundary of right panel.

How to Create Recursive Images

The user must determine the Handle points by first clicking on the Handle button, then define two red points on the drawPanel.

To draw Base cases the user must click on the Base Case button. Then user must click on either Line or Oval or Arc buttons to draw line, oval or arc (COUNTER CLOCKWISE) shapes.

To draw NonBase cases the user must click on the NonBase Case button. Then user must click on either Line or Oval or Arc buttons to draw line, oval or arc (COUNTER CLOCKWISE) shapes.

To define the recursive points, the user must click on the Recurse Points button then define the recursive points on the drawPanel by dragging the mouse from one point to another.

The user must determine the n in Enter n: textfield at the top of the applet.

In order to see the recusive image, the user must determine the Where points right after clicking on the Recurse button, then define two green points on the right Panel.

To clear the right panel, the user must click on the Clear Recursive Panel button.

To clear all Base cases or NonBase cases or recursive points or Handle points from the left panel, first click on either Base Case or NonBase Case or Recursive Point or Handle Points buttons pending on your choice, then click on the Clear All button.

To start on a new recursive image, click on the New button.

How to Run the Recursive Applet

New: click on this button applet will be to start on a new recursive image including choosing one of the file.

Clear Recursive Panel click on this button will clear the right panel

Clear All: click on this button to clear either all the base or non base or recursive points or handle points from the left panel.

Undo: click on this button to remove the last, base image or nonbase image or recursive points.

Base Case: click on this button to draw or clear All or Undo base images.

NonBase Case: click on this button to draw or clear all or Undo nonbase images.

Recursive Points: click on this button to determine or clear all or Undo recursive points.

Handle Points: click on this button to determine or clear all handle points.

Line: click on this button to draw lines for base or nonbase images on the left panel.

Oval: click on this button to draw Oval for base or nonbase images on the left panel.

Arc: click on this button to draw arc (COUNTER CLOCKWISE) for base or nonbase images on the left panel.

Use Enter n: textfield to set the n.

Use File's Name: to choose a file.

If you can not open this applet with Internet Explorer, use Netscape 6 or higher, or use Mozilla.

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