1 files changed, 138 insertions, 0 deletions
diff --git a/Thronefall_1_57/Decompile/NGS.MeshFusionPro/MeshCutterSimpleSTD.cs b/Thronefall_1_57/Decompile/NGS.MeshFusionPro/MeshCutterSimpleSTD.cs
new file mode 100644
index 0000000..950f0e9
--- /dev/null
+++ b/Thronefall_1_57/Decompile/NGS.MeshFusionPro/MeshCutterSimpleSTD.cs
@@ -0,0 +1,138 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+
+namespace NGS.MeshFusionPro;
+
+public class MeshCutterSimpleSTD : IMeshCutter
+{
+	private static List<Vector3> _vertices;
+
+	private static List<Vector3> _normals;
+
+	private static List<Vector4> _tangents;
+
+	private static List<int> _triangles;
+
+	private static List<Vector2>[] _uvs;
+
+	private static int _maxUVsCount;
+
+	static MeshCutterSimpleSTD()
+	{
+		_maxUVsCount = 4;
+		_vertices = new List<Vector3>();
+		_normals = new List<Vector3>();
+		_tangents = new List<Vector4>();
+		_triangles = new List<int>();
+		_uvs = new List<Vector2>[_maxUVsCount];
+		for (int i = 0; i < _maxUVsCount; i++)
+		{
+			_uvs[i] = new List<Vector2>();
+		}
+	}
+
+	public void Cut(Mesh mesh, MeshCuttingInfo info)
+	{
+		Cut(mesh, new MeshCuttingInfo[1] { info });
+	}
+
+	public void Cut(Mesh mesh, IList<MeshCuttingInfo> infos)
+	{
+		ValidateMeshOrThrowException(mesh);
+		CollectData(mesh);
+		foreach (MeshCuttingInfo item in infos.OrderByDescending((MeshCuttingInfo i) => i.triangleStart))
+		{
+			RemoveData(item);
+			OffsetTriangles(item);
+		}
+		ApplyDataToMesh(mesh);
+		ClearData();
+	}
+
+	private void ValidateMeshOrThrowException(Mesh mesh)
+	{
+		if (mesh == null)
+		{
+			throw new ArgumentNullException("mesh is null");
+		}
+		if (mesh.subMeshCount > 1)
+		{
+			throw new ArgumentException("SimpleMeshCutter::'mesh' should has only 1 submesh");
+		}
+	}
+
+	private void CollectData(Mesh mesh)
+	{
+		mesh.GetVertices(_vertices);
+		mesh.GetNormals(_normals);
+		mesh.GetTangents(_tangents);
+		mesh.GetTriangles(_triangles, 0);
+		for (int i = 0; i < _maxUVsCount; i++)
+		{
+			mesh.GetUVs(i, _uvs[i]);
+		}
+	}
+
+	private void RemoveData(MeshCuttingInfo cuttingInfo)
+	{
+		int vertexStart = cuttingInfo.vertexStart;
+		int vertexCount = cuttingInfo.vertexCount;
+		_vertices.RemoveRange(vertexStart, vertexCount);
+		if (_normals.Count > 0)
+		{
+			_normals.RemoveRange(vertexStart, vertexCount);
+		}
+		if (_tangents.Count > 0)
+		{
+			_tangents.RemoveRange(vertexStart, vertexCount);
+		}
+		_triangles.RemoveRange(cuttingInfo.triangleStart, cuttingInfo.triangleCount);
+		for (int i = 0; i < _uvs.Length; i++)
+		{
+			if (_uvs[i].Count > 0)
+			{
+				_uvs[i].RemoveRange(vertexStart, vertexCount);
+			}
+		}
+	}
+
+	private void OffsetTriangles(MeshCuttingInfo info)
+	{
+		int vertexCount = info.vertexCount;
+		int triangleStart = info.triangleStart;
+		int count = _triangles.Count;
+		for (int i = triangleStart; i < count; i++)
+		{
+			_triangles[i] -= vertexCount;
+		}
+	}
+
+	private void ApplyDataToMesh(Mesh mesh)
+	{
+		mesh.SetTriangles(_triangles, 0);
+		mesh.SetVertices(_vertices);
+		mesh.SetNormals(_normals);
+		mesh.SetTangents(_tangents);
+		for (int i = 0; i < _maxUVsCount; i++)
+		{
+			if (_uvs[i].Count > 0)
+			{
+				mesh.SetUVs(i, _uvs[i]);
+			}
+		}
+	}
+
+	private void ClearData()
+	{
+		_vertices.Clear();
+		_normals.Clear();
+		_tangents.Clear();
+		_triangles.Clear();
+		for (int i = 0; i < _maxUVsCount; i++)
+		{
+			_uvs[i].Clear();
+		}
+	}
+}