https://github.com/mattatz/unity-subdivision-surface

Loop subdivision surface algorithm implementation in Unity.
https://github.com/mattatz/unity-subdivision-surface

Last synced: 8 days ago
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Loop subdivision surface algorithm implementation in Unity.

• Host: GitHub
• URL: https://github.com/mattatz/unity-subdivision-surface
• Owner: mattatz
• License: mit
• Created: 2018-01-12T10:27:49.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2018-01-19T05:20:12.000Z (almost 7 years ago)
• Last Synced: 2024-10-23T04:52:36.956Z (17 days ago)
• Language: C#
• Homepage:
• Size: 41.9 MB
• Stars: 147
• Watchers: 7
• Forks: 20
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-unity-open-source-on-github - unity-subdivision-surface - Loop subdivision surface algorithm implementation (Mesh)

README

        
unity-subdivision-surface

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

Loop subdivision surface algorithm implementation in Unity.

![Heads](https://raw.githubusercontent.com/mattatz/unity-subdivision-surface/master/Captures/Heads.png)

From left to right, original mesh, subdivided 1 time, subdivided 2times model.

![Cubes](https://raw.githubusercontent.com/mattatz/unity-subdivision-surface/master/Captures/Cubes.png)

## Loop subdivision surface

> Loop subdivision surface is an approximating subdivision scheme developed by Charles Loop in 1987 for triangular meshes.

> [wikipedia](https://en.wikipedia.org/wiki/Loop_subdivision_surface)

## SubdivMorph

![SubdivMorph](https://raw.githubusercontent.com/mattatz/unity-subdivision-surface/master/Captures/SubdivMorph.gif)

SubdivMorph demo morph vertices between original and subdivided.

## Usage

```cs

var filter = GetComponent();

// Require a mesh to weld (require to remove duplicated vertices)

var welded = SubdivisionSurface.Weld(filter.mesh, float.Epsilon, filter.mesh.bounds.size.x);

var mesh = SubdivisionSurface.Subdivide(

  welded,   // a welded mesh

  2,        // subdivision count

  false     // a result mesh is welded or not

);

filter.sharedMesh = mesh;

```

See demo scenes for details.

## Compatibility

tested on Unity 2017.0.3, windows10 (GTX 1060).

## Sources

- Free low poly head model by hexonian - https://sketchfab.com/models/988a1ffdb6244eaab9b293d296c6e868

- Carnegie Mellon Univ lecture slide - http://www.cs.cmu.edu/afs/cs/academic/class/15462-s14/www/lec_slides/Subdivision.pdf

- Michigan Tech Univ lecture slide - https://pages.mtu.edu/~shene/COURSES/cs3621/SLIDES/Subdivision.pdf

- Matt's Webcorner - Subdivision - https://graphics.stanford.edu/~mdfisher/subdivision.html