Mastering openFrameworks: Creative Coding Demystified【精装】电子书

Cover

Copyright

Credits

Foreword

About the Author

Acknowledgement

About the Reviewers

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color graphics PDF

Errata

Piracy

Questions

Mastering openFrameworks: Creative Coding Demystified

Appendix A. Working with Addons

Addons basics

Addons in openFrameworks

Installing a non-core addon

Linking addons to a new project

Using Project Generator

Linking an addon to an existing project

List of selected addons

Summary

Appendix B. Perlin Noise

Perlin noise basics

Using the ofNoise() function

Space-coherent noise

Summary

Index

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Z

Chapter 1. openFrameworks Basics

About openFrameworks

Use cases

Installing openFrameworks and running your first example

Installing on Windows

Installing on Mac OS with Xcode

Installing on Linux with Code::Blocks

openFrameworks' folders

The examples folder

The apps folder

The addons folder

File structure of a project

Code structure of a project

main.cpp

testApp.h

testApp.cpp

Creating a new project

Creating a project from an existing example

Creating a project using Project Generator

Creating your first project – the Pendulum example

Running the book's examples

Basic utility functions

Summary

Chapter 2. Drawing in 2D

Drawing basics

The background color of the screen

Pulsating background example

Geometric primitives

The simplest example of a flower

Controlling the drawing of primitives

Using ofPoint

Operations with points

Using control points example

Coordinate system transformations

Flower with petals example

Colors

Operations with colors

Color modifications example

Drawing with an uncleared background

Using FBO for offscreen drawings

Spirals example

Screen grabbing

Additional topics

Summary

Chapter 3. Building a Simple Particle System

The basics of particle systems

Interaction types

Computing particles' physics

Rendering particles

Creating a particle system – summary

A single particle

Control parameters

Defining the particle functions

Implementing a particle in the project

An emitter

The attraction, repulsion, and spinning forces

Graphical user interface

Additional topics

Summary

Chapter 4. Images and Textures

Raster and vector images

Loading and drawing an image

Rotating images

Color modulation

Transparency

Creating and modifying images

Creating images

Modifying images

Using ofTexture for memory optimization

Image warping and video mapping

Using images for internal calculations

An image as a mask

An image as a palette

Summary

Chapter 5. Working with Videos

Video basics

Playing a video file

Controlling the video playback

Processing a single video frame

The vertical lines image example

The replacing colors example

Processing multiple frames

Radial slit-scan example

Processing a live video from the camera

The video synthesizer example

Using image sequence

Using image sequence example

Summary

Chapter 6. Working with Sounds

Sound basics

Playing sound samples

The bouncing ball example

The singing voices example

Generating sounds

The PWM synthesis example

Image-to-sound transcoder example

Using a microphone

The loop sampler example

Getting spectral data from sound

Dancing cloud example

Summary

Chapter 7. Drawing in 3D

3D basics

Representation of 3D objects

3D scene rendering

Simple 3D drawing

The triangles cloud example

Using ofMesh

Enabling lighting and setting normals

Drawing sharp edges

Drawing line segments and points

Drawing line segments

Drawing points

Coloring the vertices

Texturing

Working with vertices

The oscillating plane example

The twisting knot example

Additional topics

Summary

Chapter 8. Using Shaders

Basics of shaders

Types of shaders

When to use shaders

Structure of a shader's code

A simple fragment shader example

Creating the fragment shader

The vertex shader

Embedding shaders in our project

Debugging shaders

Creating video effects with fragment shaders

Passing a float parameter to a shader

Passing the float array to the shader

Using Perlin noise in shaders

Processing several images

An audio-reactive project example

Deforming objects with a vertex shader

Vertex shader

Fragment shader

Using vertex shader in our project

Using a geometry shader

The furry carpet example

Additional topics

Summary

Chapter 9. Computer Vision with OpenCV

Understanding computer vision and OpenCV

Using ofxOpenCv

Working with ofxCv images

Image initializing

Algebraic operations with images

Drawing functions

Access to pixels

Working with color planes and color spaces conversion

Motion detection from movies

Discussing the algorithm's parameters

Motion detection from live video

Image filtering

The image filtering example

Geometrical transformations of images

Perspective distortion removing example

Searching for objects in an image

Using the ofxCvContourFinder class for finding contours

An example for searching bright objects in video

Using OpenCV functions

Optical flow

Summary

Chapter 10. Using Depth Cameras

Depth camera basics

Active infrared stereo cameras

Installing the ofxOpenNI addon

ofxOpenNI examples

Working with examples of depth images

Hand-tracking examples

User tracking examples

Creating interactive surface

Running the project

Additional topics

Summary

Chapter 11. Networking

Networking basics

Using OSC protocol

Sending data

Receiving data

Typical schemes of OSC usage

Using TCP protocol for streaming images

The streaming images example

Summary