A mesh decimation library for .NET and Unity. The project is written entirely in C# and released under the MIT license.
This provided Unity Example project is currently compatible with Unity 2017.3
After building the project, copy over MeshDecimator.dll and MeshDecimator.xml into your Unity project, anywhere within your Assets directory (for example Assets/MeshDecimator).
In the provided Unity example in this repository you can find examples of how to use the mesh decimation from Unity.
MeshDecimator uses an algorithm based on the Fast Quadric Mesh Simplification algorithm, completely rewritten in C#. Currently it is the only mesh decimation algorithm available to use.
The teddy bear model in the Unity example project is from the following package from Unity Asset Store: https://assetstore.unity.com/packages/essentials/tutorial-projects/mecanim-example-scenes-5328
If you are interested in a more simple mesh simplification in Unity you can visit my other project UnityMeshSimplifier.