OpenFrameworks Essentials

Book Image

OpenFrameworks Essentials

Book Image

OpenFrameworks Essentials

Overview of this book

openFrameworks Essentials

openFrameworks Essentials

Credits

Foreword

About the Authors

About the Authors

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

Getting Started with openFrameworks

Getting Started with openFrameworks

What is openFrameworks?

Installing openFrameworks

Running your first example

The video synthesizer application

Creating Your First openFrameworks Project

Creating Your First openFrameworks Project

Creating and running a new project

Discovering the project's code structure

Setting up the screen

Centering the coordinate system

A simple drawing

Geometric patterns

Adding a GUI and Handling Keyboard Events

Adding a GUI and Handling Keyboard Events

Creating a GUI using the ofxGui addon

Implementing a simple GUI panel with sliders

Implementing the autosave feature

Creating groups of controls

Implementing a checkbox, a color selector, and a 2D slider

Handling keyboard events

Implementing the matrix pattern generator

Working with Raster Graphics – Images, Videos, and Shaders

Working with Raster Graphics – Images, Videos, and Shaders

Raster images in openFrameworks

Drawing an image file

Playing a video file

Grabbing a live video from a camera

Mixing layers using additive blending

Creating the video effect with a shader

Creating 3D Graphics

Creating 3D Graphics

Introduction to 3D graphics with openFrameworks

Drawing a wireframe sphere

Creating a camera

Drawing a solid sphere

Texturing the sphere

Mixing 2D and 3D with the GUI

Deforming a sphere

Animating Parameters

Animating Parameters

Using time values for a parameter's automation

Using the level of sound for a parameter's automation

Capturing sound from a sound card's input and measuring its level

Reading data from a text file

Controlling automation

Distributed and Physical Computing with Networking and Arduino

Distributed and Physical Computing with Networking and Arduino

Distributed computing with networking

Networking in openFrameworks

Implementing the OSC messages receiver

Creating an OSC sender with openFrameworks

Creating OSC senders with TouchOSC, Python, and Max/MSP

Physical computing with Arduino

Programming an Arduino board

Deploying the Project on iOS, Android, and Raspberry Pi

Deploying the Project on iOS, Android, and Raspberry Pi

Running the project on an iOS device

Deploying the project on an iOS device

Running the project on an Android device

Running the project on Raspberry Pi

Further Resources

Further Resources

Enhancing the video synthesizer project

Getting more information on openFrameworks

Debugging and speeding up your code

Video Synthesizer Reference

Video Synthesizer Reference

The desktop version

iOS and Android versions

Raspberry Pi version

openFrameworks Quick Reference

openFrameworks Quick Reference

Multimedia and other classes

Mathematical, timer, and conversion functions

Index

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Chapter 7. Distributed and Physical Computing with Networking and Arduino

Until now, we have created a single openFrameworks project that works on a single computer. In this chapter, we will investigate how to create a distributed project consisting of several programs working together and communicating with each other via networking. Also, we will consider how to use an Arduino board to get data from various electronic inputs, such as potentiometers. In this chapter, we will cover the following topics:

Networking in openFrameworks
Receiving and sending OSC data in openFrameworks
Creating OSC sender for a mobile device using the TouchOSC app
Creating OSC senders in Python and Max/MSP
Receiving data from an Arduino board

Tip

Along the chapter, we will use networking and Arduino data to adjust just one GUI slider, pinchY. Of course, you can use such data to adjust any other GUI sliders and arbitrary variables of your project.