https://github.com/mattatz/unity-voxel

Mesh voxelization for Unity.
https://github.com/mattatz/unity-voxel

Last synced: 10 days ago
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Mesh voxelization for Unity.

• Host: GitHub
• URL: https://github.com/mattatz/unity-voxel
• Owner: mattatz
• License: mit
• Created: 2016-10-07T03:42:50.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2019-01-06T03:58:26.000Z (almost 6 years ago)
• Last Synced: 2024-10-01T13:04:25.329Z (about 1 month ago)
• Language: C#
• Size: 114 MB
• Stars: 1,402
• Watchers: 55
• Forks: 151
• Open Issues: 11
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-unity-open-source-on-github - unity-voxel - Mesh voxelization (Voxel)

README

        
unity-voxel

=====================

Voxelize mesh algorithm in Unity. (includes GPU and CPU voxelizers.)

![Demo](https://raw.githubusercontent.com/mattatz/unity-voxel/master/Captures/Demo.gif)

## GPUVoxelParticleSystem

![GPUVoxelParticleSystem](https://raw.githubusercontent.com/mattatz/unity-voxel/master/Captures/GPUVoxelParticleSystem.gif)

the Demo for GPU Particle with geometry shader. (only tested on windows10 (GTX 1060))

Inspired by Keijiro Takahashi works⚡️ [StandardGeometryShader](https://github.com/keijiro/StandardGeometryShader) & [KvantSpray]( https://github.com/keijiro/KvantSpray)

## GPUVoxelMosaic

![GPUVoxelMosaicLevels](https://raw.githubusercontent.com/mattatz/unity-voxel/master/Captures/GPUVoxelMosaicLevels.gif)

![GPUVoxelMosaic](https://raw.githubusercontent.com/mattatz/unity-voxel/master/Captures/GPUVoxelMosaic.gif)

the Demo to update the resolution of voxels in realtime. (only tested on windows10 (GTX 1060))

## GPUVoxelSkinnedMesh

![GPUVoxelSkinnedMesh](https://raw.githubusercontent.com/mattatz/unity-voxel/master/Captures/GPUVoxelSkinnedMesh.gif)

Sample a mesh from SkinnedRenderer in every frame and voxelize it in realtime.

the human model and animation from [asset store](https://assetstore.unity.com/packages/3d/animations/raw-mocap-data-for-mecanim-5330).

## Usage

with GPU Voxelizer (recommended)

```cs

GPUVoxelData data = GPUVoxelizer.Voxelize(

    voxelizer,  // ComputeShader (Voxelizer.compute)

    mesh,       // a target mesh

    64,         // # of voxels for largest AABB bounds

    true        // flag to fill in volume or not; if set flag to false, sample a surface only

);

// build voxel cubes integrated mesh

GetComponent().sharedMesh = VoxelMesh.Build(data.GetData(), data.UnitLength, useUV);

// build 3D texture represent a volume by voxels.

RenderTexture volumeTexture = GPUVoxelizer.BuildTexture3D(

  voxelizer,

  data,

  texture,    // Texture2D to color voxels based on uv coordinates in voxels

  RenderTextureFormat.ARGBFloat,

  FilterMode.Bilinear

);

// need to release a voxel buffer

data.Dispose();

```

with CPU Voxelizer

```cs

// Voxelize target mesh with CPU Voxelizer

List voxels = CPUVoxelizer.Voxelize(

    mesh,   // a target mesh

    20      // # of voxels for largest AABB bounds

);

```

## Compatibility

Tested on Unity 2018.3.0f2, windows10 (GTX 1060), macOS (metal, not compatible with GPU Particle Demo).

## Sources

- Triangle mesh voxelization / Wolfire Games Blog - http://blog.wolfire.com/2009/11/Triangle-mesh-voxelization

- Möller–Trumbore intersection algorithm - https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm

- keijiro/StandardGeometryShader - https://github.com/keijiro/StandardGeometryShader

- keijiro/KvantSpray - https://github.com/keijiro/KvantSpray

- Post Processing Stack - https://www.assetstore.unity3d.com/jp/#!/content/83912