CMIS 141

Lab animation
Homework

Convert the BouncingTime program into an animation using the
appropriate incantations as in the Rosette program.
Get the basic animation of a moving circle done first, then add the
buttons.

See the Bouncing applet as an example.

The paint method will not be a loop.  Some of its variables need to
global variables so they retain their value between each call of the
repaint.

The actionPerformed method determines which button was pressed and
then increases or decreases the value of the animation delay or size
variable.  Changing the value of the animation delay by itself does
not change the timer, you need to do:
animationTimer.setDelay(animationDelay);

The up, down, left, right buttons nudge the circle's x or y
coordinate by 5.

Clicking the applet area twice specifies the center and point on the
circle of a circle which may in the future become a black hole that
destroys the moving circle (thus the nudging buttons to avoid it) .
The changing color of the moving circle is when it contacts the black
circle; this happens when the distance between the centers of the two
circles is less than or equal to the sum of their radiuses.


Add the other textfields and buttons.