As mentioned in the previous article in this series, Qt 3D 5.14 is bringing a number of changes aimed at improving performance. Most people familiar with Qt 3D will know that the API is designed around the construction of a scene graph, creating a hierarchy of Entities, each of them having having any number of […]
Blog Archives
Python – Tron Demo Using Qt Quick and the Qt 3D QML API
For SIGGRAPH, KDAB has been working on a new Qt 3D based demo. We decided that instead of using C++, it would be interesting to try out PySide2 and harness Python to drive the application. The idea behind this demo is to do with data acquisition of a vehicle’s surrounding environment. Once the data is […]
What a mesh! Part 1
With all the advances being made in Qt 3D, we wanted to create some new examples showing some of what it can do. To get us started, we decided to use an existing learning framework, so we followed the open source Tower Defence course, which you can find at CGCookie. Being a game, it allows […]
New in Qt 5.10: Texture Based Animations in Qt 3D Or how to blow things up
Many new features were added to Qt 3D in the 5.10 release. One of them is the support for sprite sheets, contributed by KDAB, as provided by QSpriteGrid and QSpriteSheet and their respective QML items. One way of animating things is to switch between many different versions of the same object at different points in time, like […]
KDAB’s City Lights Display with Qt 3D Qt 3D put to novel use to implement a deferred rendering pipeline
The City Lights demo is an example of Qt 3D being put to novel use to implement a deferred rendering pipeline. With OpenGL, the number of lights you can show on a screen, also affecting objects in a scene, is limited by the need to use a forward renderer. Using Qt 3D, the geometry considerations […]
Exporting 3D content for Qt 3D with Blender
At the heart of every 3D application is geometry. Qt 3D-based 3D applications are no different and require the user to either generate geometry or provide asset files for Qt 3D to load. This blog post demonstrates how Blender and its Python API could be used to write an exporter that generates geometry for Qt […]
Writing a Custom Qt 3D Aspect – part 2 Setting up the backend and communications
Introduction In the previous article we gave an overview of the process for creating a custom aspect and showed how to create (most of) the front end functionality. In this article we shall continue building our custom aspect by implementing the corresponding backend types, registering the types and setting up communication from the frontend to […]
Writing a Custom Qt 3D Aspect – part 1 Extending Qt 3D via Aspects
Introduction Qt 3D has a flexible and extensible architecture that allows us to easily add our own new functionality to it without disrupting the existing features. The functionality of Qt 3D is divided among so-called aspects, each of which encapsulates a particular subject domain such as rendering, input, or animation. This short series of articles […]
Qi (Quantitive Imaging Systems) case study Solving Cancer with Qt 3D
Solving cancer is probably the biggest mystery that we see unravel in our life. This is a complex one because cancer is not a single disease, there are a myriad of aspects that need to be uncovered. Qi (Quantitive Imaging Systems) images biopsies from patients and then labels individual cells with over a hundred biomarkers. […]
Lots of lights: Generating cities Data visualization with Qt 3D, OpenGL and C++
Sometimes data visualization might call for more than a graph – you need to visualize complex data, such as that generated by city lighting, in three dimensions to get the full effect. KDAB decided to put together a showcase for the Qt World Summit that allowed us to demonstrate Qt 3D’s capabilities as a performant […]