Book Image

Multimedia Programming with Pure Data

By : Bryan, Wai-ching CHUNG
Book Image

Multimedia Programming with Pure Data

By: Bryan, Wai-ching CHUNG

Overview of this book

Preparing interactive displays, creating computer games, and conducting audio-visual performance are now achievable without typing lines of code. With Pure Data, a graphical programming environment, creating interactive multimedia applications is just visually connecting graphical icons together. It is straightforward, intuitive, and effective. "Multimedia Programming with Pure Data" will show you how to create interactive multimedia applications. You will learn how to author various digital media, such as images, animations, audio, and videos together to form a coherent title. From simple to sophisticated interaction techniques, you will learn to apply these techniques in your practical multimedia projects. You start from making 2D and 3D computer graphics and proceed to animation, multimedia presentation, interface design, and more sophisticated computer vision applications with interactivity. With Pure Data and GEM, you will learn to produce animations with 2D digital imagery, 3D modelling, and particle systems. You can also design graphical interfaces, and use live video for motion tracking applications. Furthermore, you will learn Audio signal processing, which forms the key aspect to multimedia content creation. Last but not least, Network programming using Pure Data extension libraries explores applications to other portable devices.
Table of Contents (17 chapters)
Multimedia Programming with Pure Data
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Working with digital color


We have seen how to specify the window background color and the world light color. For all the 2D and 3D graphics, we can also individually specify the color information with RGB values. The coming example will show us how to specify color for the primitives.

Create an empty patch and save it with name gem004.pd in your folder. Put the gemwin object, create and destroy messages, and the toggle box for rendering. In addition, put a gemhead object with a sphere object.

Between the gemhead and the sphere objects, insert a color object. For color specification, it will be a message of three numbers: red, green, and blue. Clicking on the message will change the color of the sphere:

We can also use another object colorRGB to specify color for the graphical shapes. It requires three (RGB) to four (RGB and alpha) number boxes to specify the color. Remember that each number ranges from 0 to 1. If you press the Shift key and click-and-drag a number box upward or downward, you...