Lab 5: Scale and Rotate Transformations
CS145: Images and Imagination, Spring 2010

Goals

• Review the Matrix stack.
• Understand the concept of a pivot or fixed point
• Understand how rotate and scale commands work.
• Understand how to setup a hierarchical structure to insure proper animation.

Reading

In class we cover the basics of these topics. If you want more examples, more depth, or further explanations, please refer to the following pages of the text.

• pp. 137-143: Rotate and Scale

Activities

Follow the lab 5 directions (pdf).

Deliverables

Wednesday, Feb 24, 30 minutes before class:

You are to turn in via Wise a single zipped file containing the work for the 3 exercises listed in the lab 5 directions. For exercises 1 and 2, you should have 1) the Processing code and 2) an image snapshot. For exercise 3, you should have 1) the Processing code, 2) an image snapshot at some instant (see Lab 3 for instructions) and 3) an applet.

Before turning in any of your code, make sure that you have cleaned it up!