From c30cb1052ece42448b18dcec8c45ef3f2c31b627 Mon Sep 17 00:00:00 2001
From: Jeffreytsai1004 <jeffreytsai1004@gmail.com>
Date: Fri, 18 Apr 2025 11:07:14 +0800
Subject: [PATCH] Update BooleanCutTool.cpp

---
 Source/FLESH/Private/BooleanCutTool.cpp | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/Source/FLESH/Private/BooleanCutTool.cpp b/Source/FLESH/Private/BooleanCutTool.cpp
index 39bec40..db8116a 100644
--- a/Source/FLESH/Private/BooleanCutTool.cpp
+++ b/Source/FLESH/Private/BooleanCutTool.cpp
@@ -125,7 +125,26 @@ TArray<UProceduralMeshComponent*> UBooleanCutTool::CutProceduralMesh(UProcedural
 	TArray<FColor> VertexColors;
 	TArray<FProcMeshTangent> Tangents;
 	
-	TargetMesh->GetSectionMeshData(0, Vertices, Triangles, Normals, UVs, VertexColors, Tangents);
+	// 在 UE5.5.4 中，GetSectionMeshData 方法已不存在，改为使用 GetProcMeshSection 方法
+	FProcMeshSection* MeshSection = TargetMesh->GetProcMeshSection(0);
+	if (MeshSection)
+	{
+		// 从 MeshSection 中提取数据
+		for (const FProcMeshVertex& Vertex : MeshSection->ProcVertexBuffer)
+		{
+			Vertices.Add(Vertex.Position);
+			Normals.Add(Vertex.Normal);
+			UVs.Add(Vertex.UV0);
+			VertexColors.Add(Vertex.Color);
+			Tangents.Add(Vertex.Tangent);
+		}
+		
+		// 转换索引
+		for (uint32 Index : MeshSection->ProcIndexBuffer)
+		{
+			Triangles.Add(static_cast<int32>(Index));
+		}
+	}
 	
 	// Calculate intersection points between cut plane and mesh
 	TArray<FVector> IntersectionPoints = CalculateIntersectionPoints(Vertices, Triangles, CutPlane);