Tutorial Exercise 6
CS3162 Introduction to Computer Graphics
Helena Wong, 2000
1. The following diagram illustrates the viewer's eye position and a simplified scene including 2
simple objects. Construct a BSP tree for this scene. During painting, what is the order of the
surfaces to be handled? Illustrate how back-face removal can be done at the same time.
2. Show how the area subdivision method is applied the following example, in order to carry out
visible surface detection.
3. Explain the differences between constant-intensity shading, Gouraud shading, and Phong
shading.
4. Illustrate how a visible surface detection process can be adopted to perform shadow areas
detection.
5. What is Mach bands effect? Illustrate how they are created.
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