KDAB TV – Demos

KDAB Tron Demo 3D Animation using PySide2 / QtQuick / Qt 3D QML

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 car’s surrounding environment. Once the data is acquired it can be processed and used to display a 3D scene.

The application is structured in two main parts. On the one hand, we use QtQuick and the Qt 3D QML API to declare the UI and instantiate the 3D scene. On the other hand we use Python for the backend logic, data processing and models and definition of the custom Qt 3D meshes elements we’ll need to use in the UI.

Read more at https://www.kdab.com/python-tron-demo/

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KUESA™ 3D: Qt & Qt 3D Real-time Music Box

This is an example our team developed using KUESA™ 3D.
It's a robot arm controlling a music box with animation imported by Kuesa 3D directly from Blender via GLTF2

• Skeletal animation, imported from Blender via GLTF2
• Audio synthesis based on played notes
• Robot arm control or playback speed adjustment from live user input
• Data input for seamless integration and mixing of design animations

• Runs on desktop and embedded targets


About the host:
Paul Lemire is a long time Qt 3D contributor and 3D graphics enthusiast. He is handling the technical aspects related to KUESA™.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing, and innovative software across embedded, mobile, and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D, and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL, and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK, and the USA. https://www.kdab.com/about/contact/

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KDAB City Lights Demo - how to use Qt 3D to render lights in video animations

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KDAB IPC Pulse Trader phone

For more information on this project go to:
http://www.kdab.com/ipc-unigy-pulse/

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KDAB Digital Dashboard Projection

For more information on this project go to:
http://www.kdab.com/digital-dashboard-projection-demo/

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KDAB Portfolio Demo

For more information on this project go to:
http://www.kdab.com/digital-portfolio-demo/

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KDAB Migari Industrial Measuring Station

For more information on this project go to:
http://www.kdab.com/industrial-measurement/

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KDAB Nautical Infotainment / Navigation Device

For more information on this project go to:
http://www.kdab.com/nautical-demo/

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Computer Aided Design demo featuring real time cut planes

Using the Qt 3D and Qt Quick rendering technologies, this demo displays a 3D model
of a Rolls Royce Trent 900 Engine (the engine used on the A380).

A small example demonstrating the capabilities of the Qt 3D framework along
with Qt Quick 2 to present a CAD oriented rendering of a jet engine.

The full example demonstrates

* Loading and display of custom meshes
* Extended usage of Qt 3D's material system to draw textured and normal mapped
surfaces
* Gooch shading mode
* Custom cut planes to enable viewing the internals of the engine
* Multiple viewports and camera angles
* Camera animation paths
* Interaction with the model
- Open / close cowling
- Control turbine speed
- Exploded view
- Part explorer view
* Qt Quick 2 user interface overlay

The entire application is written in QML but the same can also easily be
achieved in pure C++ or a combination of the two.

For more information about Qt 3D and KDAB's service and training offerings please visit http://www.kdab.com

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Migari Touch UI - a real world example of a machine front-end

Embedded software specialist and Qt Service Partner, KDAB, is one organization that uses the Qt cross-development platform to deliver the rich, intuitive and multiscreen interface experiences demanded by today’s industrial users. On behalf of its customer, MIGARI IT - an engineering company specializing in high accuracy measurement systems for the automotive industry – KDAB recently developed a comprehensive software system for the management, monitoring and automation of precision industrial measurement systems.

The aim of the MIGARI project was to develop a highly configurable and robust application that would meet the requirements of modern software systems in the ‘Internet of Things’ age. The system can integrate a wide variety of measurement hardware and buses and is programmable and extensible by the integrator and end user. Engineered from the ground up with the needs of industrial users in mind, the system is based on Qt version 5.0 and uses QML as a domain-specific language to describe the layout of each machine setup as well as to describe measurement and analysis plans. QML is also used to adapt visualization screens dynamically to varying needs. The architecture allows for the visualization to be run on a separate device from the data acquisition and the system can run on any operating system platform that provides drivers for the connected hardware.

Contact KDAB: info@kdab.com
For more information about KDAB's services and training offerings please visit http://www.kdab.com

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Qt Quick without a GPU: i.MX6 ULL – on small embedded devices

With the introduction of the Qt Quick software renderer it became possible to use Qt Quick on devices without a GPU. We investigated how viable this option is on a lower end device, particularly the NXP i.MX6 ULL. It turns out that with some (partially not yet integrated) patches developed by KDAB and The Qt Company, the performance is very competitive. Even smooth video playback (with at least half-size VGA resolution) can be done by using the PXP engine on the i.MX6 ULL.

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How to prepare Qt 3D assets for Kuesa 3D Studio with 3ds Max®

Kuesa 3D Studio is a solution that provides an integrated and unified workflow for designers and developers to create, optimize and integrate real time 3D content in a 3D or hybrid 2D/3D software user interface. Kuesa 3D Studio is available for both embedded or desktop applications.

Designers can use the professional 3D design tool they are used to to create the 3D scenes. 3ds Max®, Blender, and more to come, all have the features needed to create stunning animations in an efficient way. The Kuesa digital content creation plugins integrate into the 3D design tool to add new features. Find out more at https://www.kdab.com/expertise/3dgraphicsandcompute/kuesa/

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QiTissue Demo

3D visualization of microscopy of tissue samples
2D images from cutting edge clinical diagnostics data sets
Real-time conversion to 3D from 30 image channels using Qt 3D

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KUESA 3D Studio Designer workflow - Part 1

This 3-part series shows how our designers work with KUESA daily. The scene used as the example here is a traditional 3D cube over a simple plane with great looking metallic reflections and a cube reflection on the plane. It is done using only QML, 2D tricks and effects and KUESA Iro materials.

The first video focuses on the Blender side of the process: creating the scene, the objects and the materials we need for the QML implementation.

About the hosts:

Nuno Pinheiro is a Portuguese graphic designer and illustrator. He specializes in iconography, themes and user interface design. Nuno's works include general illustrations, UI design, Web design, corporate design, as well as other works in creative areas.

Kirsi Sutherland is a Scottish technical artist, photographer, programmer and UI designer. She has a particular interest in 3d modelling and developing visual environments. She also works as a tutor at Edinburgh University.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing, and innovative software across embedded, mobile, and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D, and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL, and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK, and the USA. https://www.kdab.com/about/contact/

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KUESA 3D Studio Designer Workflow - Part 2

This 3-part series shows how our designers work with KUESA 3D daily. The scene used as the example here is a traditional 3D cube over a simple plane with great looking metallic reflections and a cube reflection on the plane. The scene is done only using QML, 2D tricks and effects and KUESA Iro materials.

Part 2 focuses on how to import 3D into QML, how to test it and how to make it interactive.

Learn more www.kuesa.com

About the hosts:

Nuno Pinheiro is a Portuguese graphic designer and illustrator. He specializes in iconography, themes and user interface design. Nuno's works include general illustrations, UI design, Web design, corporate design, as well as other works in creative areas.

Kirsi Sutherland is a Scottish technical artist, photographer, programmer and UI designer. She has a particular interest in 3d modelling and developing visual environments. She also works as a tutor at Edinburgh University.

About KDAB:

KDAB offers experienced software experts to help you deliver functional, high-performing, and innovative software across embedded, mobile, and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D, and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL, and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK, and the USA. https://www.kdab.com/about/contact/

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Why does my Linux application use so much memory? Memory profiling on Linux demo using Heaptrack

Heaptrack is a fast heap memory profiler that runs on Linux. It allows you to track all heap memory allocations at run-time. Afterwards, the accompanying GUI tool can be used to find optimization opportunities in your code by analyzing the recorded profiling data.

Heaptrack traces all memory allocations and annotates these events with stack traces. Dedicated analysis tools then allow you to interpret the heap memory profile to:
- find hotspots that need to be optimized to reduce the memory footprint of your application
- find memory leaks, i.e. locations that allocate memory which is never deallocated
- find allocation hotspots, i.e. code locations that trigger a lot of memory allocation calls
- find temporary allocations, which are allocations that are directly followed by their deallocation
- measure differences in all of the above before and after changing the code

You can use heaptrack pretty much wherever you are using Linux – it has been successfully used on 32bit and 64bit flavors of x86 and ARM platforms, both on embedded projects as well as desktop applications.

You can download Heaptrack for free here: https://www.kdab.com/heaptrack-version-1-2-0-released/

Music: www.bensound.com

About the tool's creator:
Milian Wolff created the Massif-Visualizer, Heaptrack and Hotspot tools now used widely to improve C++ and Qt applications performance. When not applying his knowledge to improving code base performance for KDAB’s customers, Milian maintains QtWebChannel for the Qt Project and is co-maintainer of the KDevelop IDE. In 2015, Milian won KDE’s Akademy Award for his work on Clang integration. Milian has a Masters Degree in Physics and lives in Berlin. He is fluent in English and German.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services
KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.
Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/
We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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STM32MP157 running a QT graphics demo developed by KDAB on a 4” 800*480 MIPI-DSI display

Find out more information: http://www.st.com/stm32gui

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