C#学习 创建一个Mesh

U3D中 一个GameObject被new出来就在场景中了 他有一些东西 MeshFilter MeshRenderer

filter是mesh的attribute部分 renderer是材质的部分

GameObject m_cube=new GameObject ();
m_cube.AddComponent<MeshFilter> ();
m_cube.AddComponent<MeshRenderer> ();

这样就初始一个 然后创建vertices normals uvs indeices这个就是triangles 

Vector3[] vertices = { 
      new Vector3(-1,-1,0),
      new Vector3(1,-1,0),
      new Vector3(0,0.5f,0)};
Vector2[] uvs = { 
      new Vector2(-1,0),
      new Vector2(1,0),
      new Vector2(0,1)};
int[] triangles = {1,0,2 };

然后赋值给mesh就创建好了

Mesh mesh = new Mesh ();
    m_cube.GetComponent<MeshFilter>().mesh = mesh;
    mesh.vertices = vertices;
    mesh.uv = uvs;
    mesh.triangles = triangles;
    //m_cube.GetComponent<MeshRenderer> ().material = new Material ();