https://github.com/mattatz/unity-verlet-simulator

Simple verlet integration simulator for Unity.
https://github.com/mattatz/unity-verlet-simulator

Last synced: 1 day ago
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Simple verlet integration simulator for Unity.

• Host: GitHub
• URL: https://github.com/mattatz/unity-verlet-simulator
• Owner: mattatz
• License: mit
• Created: 2017-09-25T10:51:39.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2019-03-23T01:20:12.000Z (almost 6 years ago)
• Last Synced: 2025-02-09T04:51:21.969Z (11 days ago)
• Language: C#
• Size: 46.1 MB
• Stars: 265
• Watchers: 17
• Forks: 38
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-unity-open-source-on-github - unity-verlet-simulator - Simple verlet integration simulator (Physics)

README

        
unity-verlet-simulator

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

GPU-based simple verlet integration simulator for Unity.

![Tentacles](https://raw.githubusercontent.com/mattatz/unity-verlet-simulator/master/Captures/Tentacles.gif)

![GPUChainDemo](https://raw.githubusercontent.com/mattatz/unity-verlet-simulator/master/Captures/GPUChainDemo.gif)

![GPUClothDemo](https://raw.githubusercontent.com/mattatz/unity-verlet-simulator/master/Captures/GPUClothDemo.gif)

## Usage (chain structure example)

```cs

[SerializeField] ComputeShader compute; // GPUVerletSimulator.compute

GPUVerletSimulator simulator;

void Start() {

    const float edgeLength = 0.5f;

    // define nodes and edges.

    var nodes = new GPUNode[nodesCount];

    for(int i = 0; i < nodesCount; i++)

    {

        var n = nodes[i];

        var p = new Vector3(Random.value - 0.5f, i * edgeLength, Random.value - 0.5f);

        n.position = n.prev = p;

        n.decay = 1f;

        nodes[i] = n;

    }

    var edgesCount = nodesCount - 1;

    var edges = new GPUEdge[edgesCount];

    for(int i = 0; i < edgesCount; i++)

    {

        var e = edges[i];

        e.a = i;

        e.b = i + 1;

        e.length = edgeLength;

        edges[i] = e;

    }

    // create simulator instance.

    simulator = new GPUVerletSimulator(nodes, edges);

}

void Update() {

    const int iterations = 8;

    // simulate

    simulator.Step(compute);

    for(int i = 0; i < iterations; i++)

    {

        simulator.Solve(compute);

    }

}

```

## Sources

- Advanced Character Physics - http://web.archive.org/web/20080410171619/http://www.teknikus.dk/tj/gdc2001.htm

## Compatibility

tested on Unity 2018.2.4f, windows10 (GTX 1060).