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Chapter 13: A Simple 3D Application

In this chapter, we will explore the fundamental elements of 3D composition, including the model, camera, and scene. We will also discuss the differences between left-handed and right-handed coordinate systems and learn how to compose a 3D scene in a computer graphics program.

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Chapter 13: A Simple 3D Application

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  1. Chapter 13: A Simple 3D Application Chapter 13

  2. This Chapter: we will learn about • Basic elements in 3D composition • Model • Camera • Scene (lighting and material) • Left vs. Right Handed Coordinate System • Compose a 3D Scene in a Computer Graphics Program Chapter 13

  3. A Photograph of two papers • The Model: 2 papers • 8cm x 8cm and 5cm x 5cm • The Camera • Simple pinhole • No focusing capability • The Scene • Arrangements modeland camera • Light sources (later) Chapter 13

  4. The Arrangements Chapter 13

  5. 3D Coordinate Systems • Two options for Z-axis direction! • Same position, different sign for z-value!! Chapter 13

  6. Left vs. Right Handed Systems • Right-Handed System EXCLUSIVELY!! Chapter 13

  7. The Model and the Scene • Right-Handed Coordinate System • Convenience • OriginCenter of 8x8 • Unitsin cm Chapter 13

  8. Details … Chapter 13

  9. Tut 13.1: Drawing the papers • For now: • Simplest application • no library • GrfxWindow class Chapter 13

  10. Tut 13.1: The drawing code … Chapter 13

  11. Tut 13.1: Z-Buffer for 3D Drawing • GrfxWindow::OnCreate(): create z-buffer • GrfxWindow::OnPaint(): • Enable z-buffer • Clear z-buffer Chapter 13

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