COBOL to Java transpiler

Automatic source-to-source translator that converts legacy COBOL programs into readable, idiomatic Java. Built around a grammar-driven parser and a multi-stage AST transformation pipeline, with an integration test suite that verifies translated output matches reference behaviour.

Neural networks and automatic differentation in Java

Neural networks with automatic differentiation and backpropagation in Java from scratch.

Omastoppi.fi

Web/mobile application for quickly viewing departure times for nearby public transport stops. Data fetched realtime from the HSL GraphQL API.

Econstats.eu

Application which charts the major macroeconomic indicators for the EU and US areas. Data is fetched every day from the Eurostat and FRED APIs.

WFC generator

In game development WFC (Wave Function Collapse) is used for generating output based on a set of tiles and rules. This output can then be used for different purposes, like level or texture generation. Here I'm creating textures. This is a simple Java implementation of Wave Function Collapse algorithm where the rules are defined in code.

Spacefly

2D game with procedural level generation and dynamic area of sight calculation.

Sweepmines

Minesweeper clone with Godot game engine

Javarays

Raytracer in Java.

Snakeray

Multiprocessed raytracer in Python.

House price prediction using machine learning

Sunrise & sunset for Android phones

Local sunset and sunrise times.

Live wallpaper for Android phones

Animated wallpaper for Android with minimal battery usage.

Colortact game for Android phones

Game of connecting same colored items