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QtOpenGLWidget

QtOpenGLWidget offers a start-up project for further development of applications that use the QGLWidget, part of the Qt framework which allows the usage of OpenGL. I use this for my terrain generator application (currently under development). I decide to separate the OpenGL widget's basic functionalities that I have implemented so that others can use it without the overhead of the rest of my application.

The project offers following features:

  • OpenGL integration
  • Basic navigation inside the OpenGL scene using a combination of Qt mouse event for rotation, translation and zooming
  • Basic navigation and control outside the widget using buttons and a combobox

Screenshot

You can edit the project file to build either the shared library or the application.

The structure is pretty simple. There are two widgets the first being embedded into the second one:

  • OpenGLContainer - inherits directly from QGLWidget and QGLFunctions (the second one is optional though if not used you will be greatly restricted to what OpenGL you can create and display). This component is the major part of this project and contains all the functionality that you require in order to integrate a simple yet providing basic functionality 3D viewer for OpenGL content in your Qt application including various slots and signals that allow other components of your application to interact with it
  • QtOpenGLWidget - this is more of a demo and shows an example of how components that are not part of OpenGLContainer widget can interact with it. This whole part is completely optional and you can remove it without reducing the functionality of the embedded widget mentioned above.