1 files changed, 130 insertions, 0 deletions
diff --git a/Thronefall_1_57/Decompile/NGS.MeshFusionPro/MeshSeparatorSimple.cs b/Thronefall_1_57/Decompile/NGS.MeshFusionPro/MeshSeparatorSimple.cs
new file mode 100644
index 0000000..6c79a16
--- /dev/null
+++ b/Thronefall_1_57/Decompile/NGS.MeshFusionPro/MeshSeparatorSimple.cs
@@ -0,0 +1,130 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace NGS.MeshFusionPro;
+
+public class MeshSeparatorSimple
+{
+	private const int MAX_UV_CHANNELS = 4;
+
+	private static Dictionary<Mesh, Mesh[]> _meshToSubmeshes;
+
+	private static List<Vector3> _srcVertices;
+
+	private static List<Vector3> _srcNormals;
+
+	private static List<Vector4> _srcTangents;
+
+	private static List<Vector2> _srcUV;
+
+	private static List<int> _triangles;
+
+	private static List<Vector3> _vertices;
+
+	private static List<Vector3> _normals;
+
+	private static List<Vector4> _tangents;
+
+	private static List<Vector2> _uv;
+
+	static MeshSeparatorSimple()
+	{
+		_meshToSubmeshes = new Dictionary<Mesh, Mesh[]>();
+		_srcVertices = new List<Vector3>();
+		_srcNormals = new List<Vector3>();
+		_srcTangents = new List<Vector4>();
+		_srcUV = new List<Vector2>();
+		_triangles = new List<int>();
+		_vertices = new List<Vector3>();
+		_normals = new List<Vector3>();
+		_tangents = new List<Vector4>();
+		_uv = new List<Vector2>();
+	}
+
+	public Mesh GetSubmesh(Mesh source, int submesh)
+	{
+		if (!_meshToSubmeshes.TryGetValue(source, out var value))
+		{
+			value = Separate(source);
+			_meshToSubmeshes.Add(source, value);
+		}
+		return value[submesh];
+	}
+
+	private Mesh[] Separate(Mesh mesh)
+	{
+		int subMeshCount = mesh.subMeshCount;
+		Mesh[] array = new Mesh[subMeshCount];
+		CollectMeshData(mesh);
+		for (int i = 0; i < subMeshCount; i++)
+		{
+			array[i] = CreateFromSubmesh(mesh, i);
+		}
+		ClearData();
+		return array;
+	}
+
+	private void CollectMeshData(Mesh mesh)
+	{
+		mesh.GetVertices(_srcVertices);
+		mesh.GetNormals(_srcNormals);
+		mesh.GetTangents(_srcTangents);
+	}
+
+	private Mesh CreateFromSubmesh(Mesh mesh, int submesh)
+	{
+		SubMeshDescriptor subMesh = mesh.GetSubMesh(submesh);
+		Mesh mesh2 = new Mesh();
+		int indexCount = subMesh.indexCount;
+		int vertexCount = subMesh.vertexCount;
+		int firstVertex = subMesh.firstVertex;
+		int num = firstVertex + vertexCount;
+		_vertices.Clear();
+		_normals.Clear();
+		_tangents.Clear();
+		mesh.GetIndices(_triangles, submesh);
+		for (int i = firstVertex; i < num; i++)
+		{
+			_vertices.Add(_srcVertices[i]);
+			_normals.Add(_srcNormals[i]);
+			_tangents.Add(_srcTangents[i]);
+		}
+		for (int j = 0; j < indexCount; j++)
+		{
+			_triangles[j] -= firstVertex;
+		}
+		mesh2.SetVertices(_vertices);
+		mesh2.SetNormals(_normals);
+		mesh2.SetTangents(_tangents);
+		mesh2.SetTriangles(_triangles, 0, calculateBounds: false);
+		mesh2.bounds = subMesh.bounds;
+		for (int k = 0; k < 4; k++)
+		{
+			mesh.GetUVs(k, _srcUV);
+			if (_srcUV.Count != 0)
+			{
+				_uv.Clear();
+				for (int l = firstVertex; l < num; l++)
+				{
+					_uv.Add(_srcUV[l]);
+				}
+				mesh2.SetUVs(k, _uv);
+			}
+		}
+		return mesh2;
+	}
+
+	private void ClearData()
+	{
+		_srcVertices.Clear();
+		_srcNormals.Clear();
+		_srcTangents.Clear();
+		_srcUV.Clear();
+		_triangles.Clear();
+		_vertices.Clear();
+		_normals.Clear();
+		_tangents.Clear();
+		_uv.Clear();
+	}
+}