Book Image

Processing 2: Creative Programming Cookbook

Book Image

Processing 2: Creative Programming Cookbook

Overview of this book

Processing is probably the best known creative coding environment that helps you bridge the gap between programming and art. It enables designers, artists, architects, students and many others to explore graphics programming and computational art in an easy way, thus helping you boost your creativity. "Processing 2: Creative Programming Cookbook" will guide you to explore and experience the open source Processing language and environment, helping you discover advanced features and exciting possibilities with this programming environment like never before. You'll learn the basics of 2D and 3D graphics programming, and then quickly move up to advanced topics such as audio and video visualization, computer vision, and much more with this comprehensive guide. Since its birth in 2001, Processing has grown a lot. What started out as a project by Ben Fry and Casey Reas has now become a widely used graphics programming language. Processing 2 has a lot of new and exciting features. This cookbook will guide you to explore the completely new and cool graphics engine and video library. Using the recipes in this cookbook, you will be able to build interactive art for desktop computers, Internet, and even Android devices! You don't even have to use a keyboard or mouse to interact with the art you make. The book's next-gen technologies will teach you how to design interactions with a webcam or a microphone! Isn't that amazing? "Processing 2: Creative Programming Cookbook" will guide you to explore the Processing language and environment using practical and useful recipes.
Table of Contents (18 chapters)
Processing 2: Creative Programming Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Drawing 3D primitives


In the previous chapter, you learned about drawing basic 2D shapes. Processing also has some 3D primitives, by default—a box and a sphere. In this recipe, we'll take a look at how you can draw them.

How to do it...

I'm not going to write the code for the setup() function, in this recipe. You probably know, by now, how to use it. Import the OpenGL library, just as you did in the Understanding 3D space recipe and create a window with a resolution of 640 x 480 pixels. Don't forget to add the OPENGL parameter to the size() function.

Add the following piece of code to the draw() function. We reuse the pushMatrix(), popMatrix(), and translate() functions from the previous example. We are going to add the rotateY() function to rotate our 3D primitives. These primitives are drawn to the screen with the box() and sphere() functions. The sphereDetail() function is used to manipulate the shape of the sphere.

background( 255 );
lights();

float angleY = radians( frameCount );
   ...