Write better looking console applications using ANSI escape codes

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Console applications are a great thing: They usually solely focus on getting things done. That, however, often also means that the user experience can come short. While I don’t have a problem with a simple text-only menu, it can often scare away new users. But there’s a way to easily style your console applications so that they can have something that you could call a primitive GUI:

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Control a CRT with the Raspberry Pi DPI

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I managed to send video signals to a Mac Classic’s internal CRT monitor from a BeagleBone Black back in 2016, and it seems like this is a topic that a lot of people are still interested in. A recent discussion gave me the idea to try and do the same thing with a Raspberry Pi, and I wanted to document the experiment in this article.

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Access smartphone sensor data on a website with the Permissions API (iOS 13)

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I wrote this article about reading sensor data from on a Smartphone with JavaScript a while ago. Those methods worked for Android phones as well as iPhones running on iOS 12 (or lower). However, with iOS 13, Apple changed the way sensor requests have to be made, and I decided to post an update to accomodate for that.

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Functional-Style Operations in Java with the Stream API

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I discussed Java Lambda Expressions quite a time ago in another article. Those were not the only new thing that got implemented in Java 8. Besides Lambdas, Type-Annotations, and Default methods in interfaces, version 8 of the Java API added support for functional-style operations. Because I think that this is quite a rarely discussed feature, I decided to write this short introduction to the Java Stream API and how it can be used for basic functional-style programming in Java.

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How to implement switchable dynamic custom themes with Angular Material

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I needed to implement a function that allows users to dynamically switch between different themes in an app that I develop at the moment. As the title suggests, I use Angular Material components and Material themes.

In this article, I’ll give you a step-by-step guide on how you can choose between different themes in an Angular app dynamically.

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2019: The annual Christmas report

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Just like the snow in GTA Online, the annual Christmas letter on nerdhut is back! This year was the best one so far for this website, which means that this streak goes on since 2016. Let me quickly go over some facts for this year and highlight some goals, that got achieved in 2019!

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How to program an arcball (orbiting) camera in C++ and OpenGL

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Visit this page for a Unity3D example using spherical coordinates.

I recently had to implement a drag and drop camera feature for a college course. The OpenGL program, we had to submit, had to contain a camera that can be controlled by moving the mouse around. The camera itself should always look at a fixed point in the 3D space while being rotated on two different axes like it’s stuck to the inside of a sphere.

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