initial commit for standalone rust program

README.md

@@ -1,30 +1,30 @@
 # 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.
+A standalone Rust terrain generator using `egui`, inspired by Runevision's fast erosion filter and the reference material in `plan/`.
 
 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
+## Project 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.
+- `src/` contains the standalone Rust app and generator implementation.
+- `tests/erosion_prototype.py` is the Python reference prototype used to guide the Rust port.
+- `plan/` contains the inspiration and reference documents for the terrain look.
 
-## Installing in Krita
+## Running
 
-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.
+```bash
+cargo run
+```
 
 ## Current UI
 
-The plugin adds `Tools > Scripts > Generate Advanced Erosion Terrain` and uses the active document resolution as the terrain output size.
+The app uses an `egui` desktop interface with:
 
-Controls:
-
-- Generation Scale
-- Erosion Scale
-- Random Seed with a randomize button
-- Advanced dropdown with Strength, Gully Weight, Detail, and Octaves
+- A left control panel with `Generation` and `Advanced` tabs
+- Generation controls for image width, image height, generation scale, erosion scale, and random seed
+- Advanced controls for strength, gully weight, detail, and octaves
+- A right preview area showing both the normalized heightmap and the shaded bumpmap