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

Depth camera basics

The depth camera is a camera device that captures depth images. The value of a depth image pixel is not equal to light's brightness, or color, but equal to a distance from the camera to the corresponding part of the object. The main types of such cameras are the following:

  • Time-of-flight camera: It emits a laser beam and waits for this signal to come back. By measuring the time between emission and receipt of the beam, and using the known speed of light, it computes the distance to an object. Such cameras work in light and dark environments and have high accuracy. One class of such cameras is relatively slow and is used for exact geo-measuring and 3D scanning of big areas. Another class of these cameras, such as Panasonic D-Imager, works in real time and is widely used for interactive applications at indoor and outdoor scenes.

  • Passive stereo camera: It consists of two or more visible-light cameras, which are a little separated in space and precisely aligned. The cameras...