CHAPTER 12

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3D Transformations

In the previous chapters, we discussed 2D charts, graphics, and transformations. This chapter will explain the mathematical basics of 3D transformations, which will be used to perform operations on 3D graphics objects. Most 3D transformations are analogous to the 2D transformations described in Chapter 2. Using homogeneous coordinates and matrix representations similar to the ones used in 2D, I’ll show you how to perform basic transformations, including translation, scaling, and rotation, in 3D. This chapter will also describe various projection matrices, which allow you to view 3D graphics objects on a 2D screen. ...

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