Animating text around curves

In this recipe, we will learn how we can animate text around a user-defined curve.

We will create the Letter and Word classes to manage the animation, a ci::Path2d object to define the curve, and a ci::Timer object to define the duration of the animation.

Getting ready

Create and add the following files to your project:

• Word.h

• Word.cpp

• Letter.h

• Letter.cpp

How to do it…

We will create a word and animate its letters along a ci::Path2d object. Perform the following steps to do so:

1. In the Letter.h file, include the necessary to use the text, ci::Vec2f, and ci::gl::Texture files.

   Also add the #pragma once macro

   #pragma once
   
   #include "cinder/vector.h"
   #include "cinder/text.h"
   #include "cinder/gl/Texture.h"

2. Declare the Letter class with the following members and methods:

   class Letter{
   public:
       Letter( ci::Font font, conststd::string& letter );
   
       void draw();
       void setPos( const ci::Vec2f& newPos );
   
       ci::Vec2f pos;
       float rotation;
       ci::gl::Texture texture...