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

Using the GEM display window


All graphics we are going to create reside in a separate window with the main patch window. It is often called the GEM display window. We use the gemwin object to create the window. With different input messages, we can customize the properties of the display window.

Create a new Pd patch. Save it to your folder with name gem001.pd. Clear the console window by choosing Edit | Clear console.

Put the object gemwin onto your patch window, together with two messages and one toggle box. Connect all the messages and toggle boxes to the inlet of the gemwin object:

The gemwin object manages the graphics window. In this simple example, it receives two input messages:

  • create: This message creates a new window for graphics display

  • destroy: This message closes the graphics window

Also note the toggle box that sends the number, either 0 or 1 to the gemwin object. It is the rendering switch. Turning on the toggle will start graphics rendering within the window. Turning it off...