Book Image

Cinder Creative Coding Cookbook

Book Image

Cinder Creative Coding Cookbook

Overview of this book

Cinder is one of the most exciting frameworks available for creative coding. It is developed in C++ for increased performance and allows for the fast creation of visually complex, interactive applications."Cinder Creative Coding Cookbook" will show you how to develop interactive and visually dynamic applications using simple-to-follow recipes.You will learn how to use multimedia content, draw generative graphics in 2D and 3D, and animate them in compelling ways. Beginning with creating simple projects with Cinder, you will use multimedia, create animations, and interact with the user.From animation with particles to using video, audio, and images, the reader will gain a broad knowledge of creating applications using Cinder.With recipes that include drawing in 3D, image processing, and sensing and tracking in real-time from camera input, the book will teach you how to develop interesting applications."Cinder Creative Coding Cookbook" will give you the necessary knowledge to start creating projects with Cinder that use animations and advanced visuals.
Table of Contents (19 chapters)
Cinder Creative Coding Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a slider


In this recipe we will learn how to create a slider UI element by extending the InteractiveObject class mentioned in the Creating an interactive object that responds to the mouse recipe of this chapter.

Getting ready

Please refer to the Creating an interactive object that responds to the mouse recipe to find the InteractiveObject class headers and source code.

How to do it…

We will create a Slider class and show you how to use it.

  1. Add a new header file named Slider.h to your project:

    #pragma once
    
    #include "cinder/gl/gl.h"
    #include "cinder/Color.h"
    
    #include "InteractiveObject.h"
    
    using namespace std;
    using namespace ci;
    using namespace ci::app;
    
    class Slider : publicInteractiveObject {
    public:
    Slider( ) : InteractiveObject( Rectf(0,0, 100,10) ) {
     mValue = 0.f;
    }
    Vec2f   getPosition() { return rect.getUpperLeft(); }
    void    setPosition(Vec2f position) { rect.offset(position); }
    void    setPosition(float x, float y) { setPosition(Vec2f(x,y)); }
    float   getWidth() { return getSize...