public static Mesh CreateMeshFromBillboardInstance(BillboardInstance billboardInstance)
{
NativeArray <Vector3> verticeArray = billboardInstance.VerticeList;
NativeArray <int> indexArray = billboardInstance.IndexList;
NativeArray <Vector2> uvArray = billboardInstance.UvList;
NativeArray <Vector2> uv2Array = billboardInstance.Uv2List;
NativeArray <Vector2> uv3Array = billboardInstance.Uv3List;
NativeArray <Vector3> normalArray = billboardInstance.NormalList;
Vector3[] vertices = new Vector3[billboardInstance.VerticeList.Length];
int[] indices = new int[billboardInstance.IndexList.Length];
Vector2[] uvs = new Vector2[billboardInstance.UvList.Length];
Vector2[] uv2S = new Vector2[billboardInstance.Uv2List.Length];
Vector2[] uv3S = new Vector2[billboardInstance.Uv3List.Length];
Vector3[] normals = new Vector3[billboardInstance.NormalList.Length];
verticeArray.CopyToFast(vertices);
indexArray.CopyToFast(indices);
uvArray.CopyToFast(uvs);
uv2Array.CopyToFast(uv2S);
uv3Array.CopyToFast(uv3S);
normalArray.CopyToFast(normals);
var newMesh = new Mesh
{
hideFlags = HideFlags.DontSave,
subMeshCount = 1,
indexFormat = IndexFormat.UInt32,
vertices = vertices
};
newMesh.SetIndices(indices, MeshTopology.Triangles, 0, false);
newMesh.uv = uvs;
newMesh.uv2 = uv2S;
newMesh.uv3 = uv3S;
newMesh.normals = normals;
//TODO add bounds manually from billboard cell bounds
//TODO replace with nativearray direct when unity adds interface.
newMesh.RecalculateBounds();
return(newMesh);
}
