Implementing a scribbler algorithm

In this recipe, we are going to implement a scribbler algorithm, which is very simple to implement using Cinder but gives an interesting effect while drawing. You can read more about the concept of connecting neighbor points at http://www.zefrank.com/scribbler/about.html. You can find an example of scribbler at http://www.zefrank.com/scribbler/ or http://mrdoob.com/projects/harmony/.

How to do it…

We will implement an application illustrating scribbler. Perform the following steps to do so:

1. Include the necessary headers:

   #include<vector>

2. Add properties to your main application class:

   vector <Vec2f> mPath;
   float mMaxDist;
   ColorA mColor;
   bool mDrawPath;

3. Implement the setup method, as follows:

   void MainApp::setup()
   {
     mDrawPath = false;
     mMaxDist = 50.f;
     mColor = ColorA(0.3f,0.3f,0.3f, 0.05f);
     setWindowSize(800, 600);
   
     gl::enableAlphaBlending();
     gl::clear( Color::white() );
   }

4. Since the drawing will be made with the mouse, it is necessary to use...