Chapter 7 - Transform Objects
This chapter describes transform objects (or transforms) and the functions you can use to create and manipulate them. You can use transforms to change the position, size, or orientation of a geometric object. QuickDraw 3D uses numerous transforms internally, for example, when creating a two-dimensional image of a three-dimensional model. QuickDraw 3D supports a number of types of transforms, including translate, scaling, rotation, and arbitrary affine transforms.You should read this chapter for general information about the types of transforms supported by QuickDraw 3D and for specific information about applying transforms to objects in your models. See the chapter "View Objects" for routines that you can use to get information about the transforms that QuickDraw 3D uses internally when rendering a model.
This chapter begins by describing transform objects and their features. It
also describes the various coordinate systems or spaces supported by QuickDraw 3D. The section "Transform Objects Reference," beginning on page 7-16 provides a complete description of transform objects and the routines you can use to create and manipulate them.
Chapter Contents
- About Transform Objects
- Spaces
- Types of Transforms
- Matrix Transforms
- Translate Transforms
- Scale Transforms
- Rotate Transforms
- Rotate-About-Point Transforms
- Rotate-About-Axis Transforms
- Quaternion Transforms
- Transform Objects Reference
- Data Structures
- Rotate Transform Data Structure
- Rotate-About-Point Transform Data Structure
- Rotate-About-Axis Data Structure
- Transform Objects Routines
- Managing Transforms
- Creating and Manipulating Matrix Transforms
- Creating and Manipulating Rotate Transforms
- Creating and Manipulating Rotate-About-Point Transforms
- Creating and Manipulating Rotate-About-Axis Transforms
- Creating and Manipulating Scale Transforms
- Creating and Manipulating Translate Transforms
- Creating and Manipulating Quaternion Transforms
- Summary of Transform Objects
- C Summary
- Constants
- Data Types
- Transform Objects Routines
- Managing Transforms
- Creating and Manipulating Matrix Transforms
- Creating and Manipulating Rotate Transforms
- Creating and Manipulating Rotate-About-Point Transforms
- Creating and Manipulating Rotate-About-Axis Transforms
- Creating and Manipulating Scale Transforms
- Creating and Manipulating Translate Transforms
- Creating and Manipulating Quaternion Transforms
- Errors