basysKom Application Development

Blog

Independent, open-minded and open source oriented

In our blog we talk about technologies, news, open source. Feel welcome to read, to comment and discuss. Also checkout our github.

Use Compute Shader in Qt Quick

Berthold Krevert
April 2, 2024

Berthold Krevert
April 2, 2024

With this blog post, we introduce the QtQuickComputeItem – a Qt Quick item that allows you to easily integrate compute shader into your Qt Quick Code. Compute Shader are used to perform arbitrary computations on the GPU. For example, the screenshot below shows a Qt Quick application that generates Gray Scott Reaction Diffusion patterns. The simulation is executed by a compute shader that is configured directly in QML.

COOL – Flutter for embedded systems – a new approach for industrial HMIs

Frank Meerkötter
March 25, 2024

Frank Meerkötter
March 25, 2024

Join us at the April 2024 edition of the OSADL COOL series to hear about using Flutter for Embedded Linux HMIs.

🗓️ Date & Time: 24th April 2024, 2 PM
🌐 Format: Online, 2-hour session

Hello, RHI – How to get started with Qt RHI

Berthold Krevert
November 24, 2023

Berthold Krevert
November 24, 2023

For some time now, Qt has been internally utilizing RHI (Rendering Hardware Interface), a new cross-platform technology for graphic rendering. Since Qt 6.6, this API has been semi-public, meaning that the API is mature for practical use but may still be subject to potential changes between major Qt versions. In this blog post, we demonstrate how to to get started with RHI.

RiveQtQuickPlugin now with Text Support

Jeremias Bosch
November 10, 2023

Jeremias Bosch
November 10, 2023

The RiveQtQuickPlugin has now integrated the latest rivecpp version. We’ve implemented rendering support for rive text elements. We ensured seamless text rendering compatibility across both software and hardware-backed renderers. Explore our latest blog post for a demonstration video and to learn about more rendering enhancements.

Embed Rive in your QtQuick applications

Berthold Krevert
October 30, 2023

Berthold Krevert
October 30, 2023

Learn how to use Rive within Qt and Qt Quick. Rive is a tool (and file format) that enables you to create interactive vector animations. With the RiveQtQuickPlugin, you can effortlessly load and display Rive animations within your QtQuick projects. In this article, we will demonstrate how to embed Rive files, use different rendering backends, load artboards and trigger animations.

Qt OPC UA – Data Type Code Generation

Jannis Völker
September 19, 2023

Jannis Völker
September 19, 2023

The type system of OPC UA permits the creation of complex and nested data types. With the merge of the generic struct decoding and encoding feature, the Qt OPC UA module has greatly improved the comfort of handling such types. But for large projects with lots of custom data types, its QVariant based interface might still feel a bit too complicated.

Generic Struct Handling is Coming to Qt OPC UA

Jannis Völker
September 14, 2023

Jannis Völker
September 14, 2023

OPC UA servers often use structured data types, for example when they are implementing a companion specification or exposing custom structured data types from a PLC program. Up to now, Qt OPC UA was just returning a binary blob when reading such a value and the decoding was left entirely to the user. Since OPC UA 1.04, there is a standardized way for a server to expose the data type description for custom data types. We have extended Qt OPC UA to use this information to make it much easier to encode and decode custom data types. The following article introduces the new API.

Introducing the RiveQtQuickPlugin – Powerful Animations For Your QtQuick Applications

Jeremias Bosch
September 6, 2023

Jeremias Bosch
September 6, 2023

Rive is a popular tool for vector animations. While the editor itself is a closed source commercial product, there are FOSS implementations for the player runtime. basysKom has developed a QtQuick integration based on the rive-cpp library. This article introduces the project and its current state.

OPC UA Reverse Connect for open62541

Frank Meerkötter
June 26, 2023

Frank Meerkötter
June 26, 2023

„OPC UA Reverse Connect“ is a special connection mode in which the traditional roles of clients and servers during connection establishment are reversed – the server is responsible for initiating the connection to a client. This mode is intended for critical network environments (e.g. shop floor, production) where no inbound connections are allowed at all. basysKom has added support for „OPC UA Reverse Connect“ to the open62541 stack. This article provides you with some entry points on how to use this new open62541 feature.

Qt OPC UA news catch up

Frank Meerkötter
January 26, 2023

Frank Meerkötter
January 26, 2023

It has been a while since the last blog post covering Qt OPC UA news. This short update will outline what we have primarily worked on in 2022.

Customer Showcase: OPC UA@Weinig

Frank Meerkötter
February 22, 2022

Frank Meerkötter
February 22, 2022

basysKom supported the WEINIG Group during the development and implementation of the WWCS while using OPC UA and the open62541 stack: a customer showcase.

FOSS-Update: basysKom contributions to the OpenAPI Generator

Frank Meerkötter
December 9, 2021

Frank Meerkötter
December 9, 2021

Over the last months basysKom contributed a number of improvements to the OpenAPI Generator project. OpenAPI as a standard provides a structured way to define, implement, test and maintain REST-like APIs.

Flutter FFI Plugins – How to use open62541 in Flutter applications

Benjamin Meier
October 14, 2021

Benjamin Meier
October 14, 2021

In this blog we explain how to provide OPCUA open62541 as a ffi plugin to Dart and use it in Flutter. We highlight the pros‘ and give you the cons.

Announcing the umati Dashboard-OPC UA-Client

Frank Meerkötter
October 6, 2021

Frank Meerkötter
October 6, 2021

The umati community did its first open source release of the „umati Dashboard OPC UA Client“. To support this effort basysKom has worked with the umati community and ported the client to the open62541 OPC UA stack.

Qt 6: How To port Shader Effects from Qt 5

Berthold Krevert
August 5, 2021

Berthold Krevert
August 5, 2021

In this blog post, we give you a step-by-step guide on how to port shader code you might have in your Qt 5 application to Qt 6.