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https://github.com/mogoson/MGS.SkinnedMesh

Unity plugin for create skinned mesh in scene.
https://github.com/mogoson/MGS.SkinnedMesh

bezier curve helix hermite hose mesh polygon prism skinned uv

Last synced: 2 months ago
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Unity plugin for create skinned mesh in scene.

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README 

        
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# MGS.SkinnedMesh



## Summary



- Unity plugin for create skinned mesh in scene.



## Platform



- Windows



## Environment



- .Net Framework 3.5 or above.

- Unity 5.0 or above.



## Technology



### Build Vertices



```C#

//Create polygon vertices.

var vertices = new List();

var sector = 2 * Mathf.PI / edge;

var radian = 0f;

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

{

    radian = sector * i;

    vertices.Add(center + rotation * new Vector3(Mathf.Cos(radian), Mathf.Sin(radian)) * radius);

}

return vertices;

```



### Build Triangles



```C#

//Create polygon triangles index base on center vertice.

var triangles = new List();

var offset = clockwise ? 0 : 1;

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

{

    triangles.Add(start + i + offset);

    triangles.Add(start + i - offset + 1);

    triangles.Add(center);

}

return triangles;



//Create prism triangles index.

var triangles = new List();

var polygonVs = polygon + 1;

var currentSegment = 0;

var nextSegment = 0;

for (int s = 0; s < segment - 1; s++)

{

    // Calculate start index.

    currentSegment = polygonVs * s;

    nextSegment = polygonVs * (s + 1);

    for (int p = 0; p < polygon; p++)

    {

        // Left-Bottom triangle.

        triangles.Add(start + currentSegment + p);

        triangles.Add(start + currentSegment + p + 1);

        triangles.Add(start + nextSegment + p + 1);



        // Right-Top triangle.

        triangles.Add(start + currentSegment + p);

        triangles.Add(start + nextSegment + p + 1);

        triangles.Add(start + nextSegment + p);

    }

}

return triangles;

```



### Build UV



```C#

//Create polygon uv.

var uv = new List();

var sector = 2 * Mathf.PI / edge;

var radian = 0f;

var center = Vector2.one * 0.5f;

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

{

    radian = sector * (clockwise ? i : edge - i);

    uv.Add(center + new Vector2(Mathf.Cos(radian), Mathf.Sin(radian)) * 0.5f);

}

return uv;



//Create prism uv.

var uv = new List();

var polygonVs = polygon + 1;

var vertices = polygonVs * segment;

var slice = 1.0f / polygon;

var u = 0f;

var v = 0f;

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

{

    u = slice * (i % polygonVs);

    v = (i / polygonVs) % 2;

    uv.Add(new Vector2(u, v));

}

return uv;

```



### Build Mesh



```C#

//Rebuild the mesh of hose.

mesh.vertices = CreateVertices(curve, segments, differ, isSeal);

mesh.uv = CreateUV(segments, isSeal);

mesh.triangles = CreateTriangles(segments, isSeal);



mesh.RecalculateNormals();

#if UNITY_5_6_OR_NEWER

mesh.RecalculateTangents();

#endif

mesh.RecalculateBounds();

```



### Shared Mesh



```C#

meshRenderer.sharedMesh = mesh;

meshRenderer.localBounds = mesh.bounds;

if (meshCollider)

{

    meshCollider.sharedMesh = null;

    meshCollider.sharedMesh = mesh;

}

```



### Combine Mesh



```C#

var combines = new List();

foreach (var filter in filters)

{

    var pos = filter.transform.position - center;

    var combine = new CombineInstance

    {

        mesh = filter.sharedMesh,

        transform = Matrix4x4.TRS(pos, filter.transform.rotation, filter.transform.lossyScale)

    };

    combines.Add(combine);

}

var rebornMesh = new Mesh();

rebornMesh.CombineMeshes(combines.ToArray(), mergeSubMeshes);



#if !UNITY_5_5_OR_NEWER

    //Mesh.Optimize was removed in version 5.5.2p4.

    rebornMesh.Optimize();

#endif

```



## Usage



### Curve Hose



- Attach mono curve component to a game object.



  ```tex

  MonoHermiteCurve MonoBezierCurve MonoHelixCurve MonoEllipseCurve MonoSinCurve

  ```



- Attach mono curve hose component to the game object.



  ```tex

  MonoCurveSkinnedHose

  ```



- Rebuild mono curve runtime, and mono curve hose component will auto Rebuild.



```C#

var curve = GetComponent();

curve.AddAnchor(new HermiteAnchor(point));

curve.Rebuild();//The mono curve hose component will auto Rebuild.

```



## Demo



- Demos in the path "MGS.Packages/SkinnedMesh/Demo/" provide reference to you.



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Copyright © 2021 Mogoson.	[email protected]