# advanced_erosion_terrain_heightmap_generation

A krita plugin designed to implement Runevision's (Skovbo Johansen) fast erosion filter on top of noise for realistic looking terrain.

See here:

https://www.shadertoy.com/view/wXcfWn
https://www.shadertoy.com/view/sf23W1
https://blog.runevision.com/2026/03/fast-and-gorgeous-erosion-filter.html

## Plugin layout

The production Krita plugin lives under `pykrita/advanced_erosion_generator/`.
The `tests/` directory remains prototype-only reference code and is not imported by the plugin.

## Installing in Krita

Copy `pykrita/advanced_erosion_generator.desktop` and the `pykrita/advanced_erosion_generator/` folder into Krita's `pykrita` directory.
The current plugin implementation is pure Python and does not depend on `numpy` or the test virtual environment.

## Current UI

The plugin adds `Tools > Scripts > Generate Advanced Erosion Terrain` and uses the active document resolution as the terrain output size.

Controls:

- Generation Scale
- Erosion Scale
- Random Seed with a randomize button
- Advanced dropdown with Strength, Gully Weight, Detail, and Octaves