Create procedural mesh from animated skeletal mesh?

[anonymous_user_03e81d31]

This should help, however it doesn’t work with morph targets.

void CopySkeletalMeshToProcedural(USkeletalMeshComponent* SkeletalMeshComponent, int32 LODIndex, UProceduralMeshComponent* ProcMeshComponent)
{

	FSkeletalMeshRenderData* SkMeshRenderData = SkeletalMeshComponent->GetSkeletalMeshRenderData();
	const FSkeletalMeshLODRenderData& DataArray = SkMeshRenderData->LODRenderData[LODIndex];
    FSkinWeightVertexBuffer& SkinWeights = *SkeletalMeshComponent->GetSkinWeightBuffer(LODIndex);

	TArray<FVector> VerticesArray;
	TArray<FVector> Normals;
	TArray<FVector2D> UV;
	TArray<int32> Tris;
	TArray<FColor> Colors;
	TArray<FProcMeshTangent> Tangents;

	
	//get num vertices
	int32 NumSourceVertices = DataArray.RenderSections[0].NumVertices;

	for (int32 i = 0; i < NumSourceVertices; i++)
	{
		//get skinned vector positions
		FVector SkinnedVectorPos = USkeletalMeshComponent::GetSkinnedVertexPosition(SkeletalMeshComponent, i, DataArray, SkinWeights);
		VerticesArray.Add(SkinnedVectorPos);

		//Calc normals and tangents from the static version instead of the skeletal one
		FVector ZTangentStatic = DataArray.StaticVertexBuffers.StaticMeshVertexBuffer.VertexTangentZ(i);
		FVector XTangentStatic = DataArray.StaticVertexBuffers.StaticMeshVertexBuffer.VertexTangentX(i);

		//add normals from the static mesh version instead because using the skeletal one doesn't work right.
		Normals.Add(ZTangentStatic);

		//add tangents
		Tangents.Add(FProcMeshTangent(XTangentStatic, false));

		//get UVs
		FVector2D uvs = DataArray.StaticVertexBuffers.StaticMeshVertexBuffer.GetVertexUV(i, 0);
		UV.Add(uvs);

		//dummy vertex colors
		Colors.Add(FColor(0, 0, 0, 255));
	}


	//get index buffer
	FMultiSizeIndexContainerData indicesData;
	DataArray.MultiSizeIndexContainer.GetIndexBuffer(indicesData.Indices);

	//iterate over num indices and add traingles
	for (int32 i = 0; i < indicesData.Indices.Num(); i++)
	{
		uint32 a = 0;
		a = indicesData.Indices[i];
		Tris.Add(a);
	}

	//Create the procedural mesh
	ProcMeshComponent->CreateMeshSection(0, VerticesArray, Tris, Normals, UV, Colors, Tangents, true);
}