Procedural Terrain Generation in Unity by using Perlin Noise in combination with Fractal Brownian Motion.
- Noise source:
- Unity - Mathf.PerlinNoise
- Improved Noise - Implementation of Improved Noise (3D) based on reference implementation
- Size - Square mesh size
- Scale - Noise scale
- Offset by Size - Offsetting by noise map size
- Noise X offset
- Noise Y offset
- Fractal Brownian Motion params:
- Amplitude
- Frequency
- Persistence
- Lacunarity
- Octave count
- Mesh Height - Max mesh height for noise value of 1
- Mesh LOD - Level of detail
- Water Plane Threshold - Water plane Y position based on mesh height
- Use Avg - Averaging surrounding noise map values while generating mesh
- Ease function - use the fade/ease function (
6t^5 - 15t^4 + 10t^3) on generated noise values - Application of custom curve to generated noise values
- Colors - array of height/noise value thresholds with colors to apply to generated mesh
- Mesh coloring shader(Cshader):
- Texture - Coloring mesh based on the noise value
- Height - Coloring mesh based on height value
For Improved Noise aditionaly:
- Noise Z offset
- Permutation table mutiplayer - to manipulate the size of the base permutation table to allow for minimizing repetition of generated terrain
- Randomazing the noise permutation table
- Runtime and in-editor UI.
- Auto-updating mesh on changes in Editor or in Runtime UI.
- Mesh exporting - generated terrain meshes can be exported to an ASCII PLY file by clicking the export mesh button.
- Noise plane - quick overiew of generated noise map.
- Water plane.
This project is licensed under MIT License.