# Errata

Back to: Computer Graphics and Virtual Environments From Realism to Real-Time
Part One | Part Two | Part Three | Part Four | Part Five | Part Six | Appendices | Miscellaneous

Part One: Introduction: Perception, Light, Colour, and Math

• Clarification Figure 1.19. Jacob is more properly known as a patriarch, but the title of the painting is actually as given in the caption
• Clarification Figure 1.25. This figure was first drawn by W.E.Hill in 1915. It became known as the Boring Figure.
• typo p25, para 2, should start "Throughout the whole of human exisistence".

CHAPTER 2 Mathematics for Virtual Environments

• Page 51, Addition of Vectors. The diagram is correct, but in the text, the statement
```v1 + v2 = (x1+y1, x2+y2, z1+z2) - (EQ2.4)
```
```v1 + v2 = (x1+x2, y1+y2, z1+z2) - (EQ2.4)
```

CHAPTER 3 Lighting - the Radiance Equation

• p113, equations 4.63 and 4.64:
in 4.64 it should be
(1/3)(1,1,1) = (1,1,1)A (since A transforms from RGB to XYZ).
and therefore in 4.64 replace the 3 by 1/3.

Part Two: From Realism to Real-Time I

CHAPTER 6 Local Illumination and Ray Tracing

CHAPTER 7 Generalising the Camera

CHAPTER 8 Constructing a Scene

CHAPTER 10 Clipping Polygons

CHAPTER 11 Visibility Determination

CHAPTER 12 Rendering Polygons

CHAPTER 13 Image Space Rendering and Texturing

• Page 268, Typo: "import-ant" should be "important"

Part Three: From Real-Time to Realism

CHAPTER 14 Shadows: Towards Real-time Realism

• Page 302, Figure 14.3(b). The figure was produced with incorrect numbering. This figure is correct.
• Page 309, Typo: "everyting" should be "everything",

CHAPTER 15 An Introduction to Radiosity

CHAPTER 16 Faster Ray Tracing

CHAPTER 17 Clipping and Rendering Lines

Part Four: Solids, Curves and Surfaces

CHAPTER 18 Constructive Solid Geometry

Part Five: Dynamics and Interaction in Virtual Environments

CHAPTER 20 Human Dynamics in a Virtual World

CHAPTER 21 Real-Time Interaction

Part Six: From Realism to Real-Time II

Appendices

Appendix A Introduction to VRML

Miscellaneous

Miscellaneous

References