Book Image

Qt5 C++ GUI Programming Cookbook - Second Edition

By : Lee Zhi Eng
Book Image

Qt5 C++ GUI Programming Cookbook - Second Edition

By: Lee Zhi Eng

Overview of this book

With the growing need to develop GUIs for multiple targets and multiple screens, improving the visual quality of your application becomes important so that it stands out from your competitors. With its cross-platform ability and the latest UI paradigms, Qt makes it possible to build intuitive, interactive, and user-friendly user interfaces for your applications. Qt5 C++ GUI Programming Cookbook, Second Edition teaches you how to develop functional and appealing user interfaces using the latest version of QT5 and C++. This book will help you learn a variety of topics such as GUI customization and animation, graphics rendering, implementing Google Maps, and more. You will also be taken through advanced concepts like asynchronous programming, event handling using signals and slots, network programming, various aspects of optimizing your application. By the end of the book, you will be confident to design and customize GUI applications that meet your clients' expectations and have an understanding of best practice solutions for common problems.
Table of Contents (15 chapters)

Rendering 3D shapes

We learned how to draw simple 2D shapes onscreen in the previous section. However, to fully utilize the OpenGL API, we also need to learn how to use it to render 3D images. In a nutshell, 3D images are simply illusions that are created using 2D shapes, stacked in such a way that it makes them look like they're 3D.

How to do it...

The main ingredient here is the depth value, which determines which shapes should appear in front of or behind the other shapes. The primitive shape that is positioned behind another surface (with a shallower depth than another shape) will not be rendered (or will be partially rendered). OpenGL provides a simple way to achieve this:

  1. Let's continue our project from the...