Part I. Introduction
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Part I. Introduction
Table of Contents
1. Getting Started
Necessary Experience
Required Background
Other VR Software Tools
Organization
2. Application Basics
Application Object Overview
No
main()
—“
Don't call me, I'll call you
”
Application Objects Derive from Base Classes for Specific Graphics APIs
Writing an Application Means Filling in the Blanks
Benefits of Application Objects
Allow for Run-Time Changes
Low Coupling
Allows Implementation Changes
Multi-Language Interaction
VR Juggler Startup
No
main()
—Sort Of
Structure of a
main()
Function
Kernel Loop
Definition of a Frame
Base Application Object Interface
Initialization
Frame Functions
Draw Manager-Specific Application Classes
OpenGL Application Class
OpenGL Performer Application Class
3. Helper Classes
The
gmtl::Vec<S, T>
Helper Class
High-Level Description
Using
gmtl::Vec3f
and
gmtl::Vec4f
Creating Vectors and Setting Their Values
Inversion (Finding the Negative of a Vector)
Normalization
Length Calculation
Multiplication by a Scalar
Division by a Scalar
Converting to an OpenGL Performer Vector
Assignment
Equality/Inequality Comparison
Dot Product
Cross Product
Addition
Subtraction
Full Transformation by a Matrix
The Gory Details
The
gmtl::Matrix44f
Helper Class
High-Level Description
Using
gmtl::Matrix44f
Creating Matrices and Setting Their Values
Assignment
Equality/Inequality Comparison
Transposing
Finding the Inverse
Addition
Subtraction
Multiplication
Scaling by a Scalar Value
Making an Identity Matrix Quickly
Zeroing a Matrix in a Single Step
Making an XYZ, a ZYX, or a ZXY Euler Rotation Matrix
Making a Translation Transformation Matrix
Making a Scale Transformation Matrix
Extracting Specific Transformation Information
Converting to an OpenGL Performer Matrix
The Gory Details
Device Proxies and Device Interfaces
High-Level Description of Device Proxies
High-Level Description of Device Interfaces
Using Device Interfaces
Stupefied Proxies
The Gory Details