Book Image

Mastering openFrameworks: Creative Coding Demystified

By : Denis Perevalov
Book Image

Mastering openFrameworks: Creative Coding Demystified

By: Denis Perevalov

Overview of this book

openFrameworks is a powerful programming toolkit and library designed to assist the creative process through simplicity and intuitiveness. It's a very handy software library written in C++ to reduce the software development process, helping you to kick-start creative coding. With the help of C++ and shaders support, openFrameworks allows for the processing of all kinds of media information with your custom-developed algorithms at the lowest possible level, with the fastest speed. "Mastering openFrameworks: Creative Coding Demystified" will introduce you to a world of creative coding projects, including interactive installations, audio-visual, and sound art projects. You will learn how to make your own projects using openFrameworks. This book focuses on low-level data processing, which allows you to create really unique and cutting-edge installations and projects. "Mastering openFrameworks: Creative Coding Demystified" provides a complete introduction to openFrameworks, including installation, core capabilities, and addons. Advanced topics like shaders, computer vision, and depth cameras are also covered. We start off by discussing the basic topics such as image and video loading, rendering and processing, playing sound samples, and synthesizing new sounds. We then move on to cover 3D graphics, computer vision, and depth cameras. You will also learn a number of advanced topics such as video mapping, interactive floors and walls, video morphing, networking, and using geometry shaders. You will learn everything you need to know in order to create your own projects; create projects of all levels, ranging from simple creative-code experiments, to big interactive systems consisting of a number of computers, depth cameras, and projectors.
Table of Contents (22 chapters)
Mastering openFrameworks: Creative Coding Demystified
About the Author
About the Reviewers

Generating sounds

We saw earlier how to play sound samples and change their parameters. Though this technique is simple and easy to begin with, it is not enough for making breakthrough sound art projects. One way to achieve this is by generating and synthesizing sounds and not using samples at all. Another way is to use samples as raw material for processing methods such as morphing and granular synthesis. Both ways are based on using low-level algorithms, which construct sounds as an array of audio samples in real time.

openFrameworks uses low-level sound input and output, and we use C++ for processing it, so our sound processing pipeline can perform almost any trick with sounds, will work fast, and with only small lags.


There is one thing that is currently not so convenient to implement with openFrameworks. This is processing a sound stream using a variety of standard filters and effects. To do this, you need to program filters yourself or use libraries or addons. Also, you can use software...