Book Image

C++ Game Animation Programming - Second Edition

By : Michael Dunsky, Gabor Szauer
4.5 (2)
Book Image

C++ Game Animation Programming - Second Edition

4.5 (2)
By: Michael Dunsky, Gabor Szauer

Overview of this book

If you‘re fascinated by the complexities of animating video game characters and are curious about the transformation of model files into 3D avatars and NPCs that can explore virtual worlds, then this book is for you. In this new edition, you’ll learn everything you need to know about game animation, from a simple graphical window to a large crowd of smoothly animated characters. First, you’ll learn how to use modern high-performance graphics, dig into the details of how virtual characters are stored, and load the models and animations into a minimalistic game-like application. Then, you’ll get an overview of the components of an animation system, how to play the animations and combine them, and how to blend from one animation into another. You’ll also get an introduction to topics that will make your programming life easier, such as debugging your code or stripping down the graphical output. By the end of this book, you’ll have gained deep insights into all the parts of game animation programming and how they work together, revealing the magic that brings life to the virtual worlds on your screen.
Table of Contents (22 chapters)
1
Part 1:Building a Graphics Renderer
7
Part 2: Mathematics Roundup
10
Part 3: Working with Models and Animations
15
Part 4: Advancing Your Code to the Next Level

Constructing a Hermite spline

A Hermit spline consists of four control points, split into two groups:

  • A starting and ending vertex
  • An incoming and an outgoing tangent

The right side of Figure 7.13 shows a Hermite spline. The two tangents start at the vertices: the incoming tangent begins at the start vertex, and the outgoing tangent starts at the end vertex.

Note

The incoming tangent of a Hermite spline points toward the direction of the spline path, and the outgoing tangent points away from the spline path.

The unequal directions of the two tangents may look a bit strange at first glimpse, as the Bezier spline on the left side of Figure 7.13 is completely inside the polygon created by the four control points. But this definition has a significant impact on the continuity of Hermite splines.

Spline continuity

If we want to join two splines, we must take care of the continuity of the spline path. Just setting the location of the starting vertex of the...