Billboard objects, which were discussed in Chapter 6, can be used in Alice to create curtains for fade effects and wipes. An image of a black rectangle, for example, could be used to fade to black, or fade from black. The opacity property of a billboard can be changed to achieve a fade effect, or a billboard can be moved in front of the camera to achieve a wipe effect. Using a drawing or painting program, create a black rectangle and then use the saved rectangle to do the following:

a. Add opening and closing fade from black and fade to black effects to a copy of Alices lake Skater example world. Save the finished world as a movie file.

b. Add a wipe effect between two shots in the Shut the Door complete Nice world that resulted from Tutorial 9D. A copy of the world is included with the student data files for this book