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

Working with arrays


If you only need two variables in your sketch, it's ok to declare them as two different float or int variables. But, if you need lots of variables, this might not be the best option. In this case, you'll need to use an array. An array is basically a collection of variables of the same type. In this recipe, we'll cover how you can work with the functions Processing offers for working with arrays.

How to do it...

The first thing we'll do is to declare two arrays of floats and assign some values to them. You can easily do this by adding curly braces around a series of comma separated numbers.

float[] array1 = { 1.0, 4.7, 3.08 };
float[] array2 = { 72.86, 48.32 };
  
void setup()
{
  noLoop();
}

Inside the draw() function, we'll print the output of the functions to the console. The first thing we'll do is add an extra number to the first array by using the append() function.

println( "New Array: Array 1 + new float" );
println( "------------------------------");
float[] newArray...