cmpt-tile-cs

Library for reading/writing composite 3D Tiles (cmpt)

Specs: https://github.com/CesiumGS/3d-tiles/blob/master/specification/TileFormats/Composite/README.md

NuGet

https://www.nuget.org/packages/cmpt-tile/

Sample code

1] sample code of reading composite tile containing batched and instanced model.

var cmpt = CmptReader.Read(cmptfile);
Assert.IsTrue(cmpt.CmptHeader.TilesLength == 2);
Assert.IsTrue(cmpt.Tiles.Count == 2);
Assert.IsTrue(cmpt.Magics.ToArray()[0] == "b3dm");
Assert.IsTrue(cmpt.Magics.ToArray()[1] == "i3dm");
var b3dm = B3dmReader.ReadB3dm(new MemoryStream(cmpt.Tiles.ToArray()[0]));
var i3dm = I3dmReader.Read(new MemoryStream(cmpt.Tiles.ToArray()[1]));
Assert.IsTrue(i3dm.Positions.Count == 25);

2] Writing - sample code

var tileBytes= I3dmWriter.Write(i3dm);
var tiles = new List<byte[]>();
tiles.Add(tileBytes);
var cmptBytes = CmptWriter.Write(tiles);

History

2021-09-24: Version 0.2.3: adding exception handling when writing tiles

2021-09-22: Version 0.2.1 + 0.2.2 add padding rules

2020-11-02: Initial version - reading composite tiles