A robust, two-layer procedural system for generating organic 18th-century city blocks in Unity.
| Role | Engine | Key Tech |
|---|---|---|
| Tooling Engineer & Technical Artist | Unity 6 (C#) | Voronoi Tessellation, Sutherland-Hodgman Clipping, Procedural Mesh Generation, Shader Graph Triplanar Shader, Particle System, Optimization |
This project is documented in detail in the Wiki. Please select a topic below for a deep dive:
| 🏗️ Part 1: The City Planner | 🏠 Part 2: The Architect | 🎨 Part 3: Tech Art & Optimization |
|---|---|---|
| Voronoi Layouts & Polygon Clipping | Procedural Mesh Generation & Roof Logic | Shaders, Batching & Performance |
My goal was to move away from "Manhattan-style" grid generation and capture the chaotic, organic nature of European urban planning. The system works in four stages:
The system relies on a modular kit of low-poly assets (Facade segments, Windows, Cornices). These are "smart" assets that the generator stretches and fits to arbitrary wall lengths.
(Modular Asset Kit created by Stefani Badzheva)
The CitySectorGenerator handles the macro-layout. It scatters seed points, generates a Voronoi diagram, clips the cells to the sector bounds, and creates the street network automatically.
The generation is non-destructive. Using custom Editor Tools, I can grab any vertex of a building's footprint and drag it. The entire building—facades, roof, and windows—regenerates instantly to fit the new shape.
The final output is a performant, atmospheric city sector ready for gameplay.
- Voronoi Tessellation: Generates organic, non-grid layouts.
- Procedural Roofs: Custom algorithm generates watertight Mansard roofs for any N-gon shape.
- Triplanar Shaders: Solves UV mapping issues on procedurally generated geometry.
- Editor Tooling: Fully interactive custom inspectors with scene-view handles.
- Optimization: Integrated Static Batching, GPU Instancing, and Shadow Caster optimization for real-time performance.
- 3D Environment Art: Stefani Badzheva
- Engineering & Tech Art: Nichita Cebotari