GetVertexPaintData Implementation

FColor UYourBPLibrary::GetVertexPaintData(UStaticMeshComponent* StaticMeshComp, FVector Position, int32 LODIndex)
{
    // Make sure user doesn't pass nullptr
    if (StaticMeshComp == nullptr)
    {
        UE_LOG(LogTemp, Error, TEXT("Passed Static Mesh Component is not valid!"));
    }
    else if (StaticMeshComp->LODData.IsValidIndex(LODIndex)) // And a valid LODIndex
    {
        // Get the painted Vertices from the passed StaticMeshComponent's LODData
        TArray<FPaintedVertex> PaintedVertices = StaticMeshComp->LODData[LODIndex].PaintedVertices;

        // Make sure we have PaintedVertices
        if (PaintedVertices.Num() > 0)
        {
            // Find the closest Vertex Position to the passed Position (local space!)
            float ClosestDistance;
            FVector EmptyDir; // No use, just for the Function below

            (PaintedVertices[0].Position - Position).ToDirectionAndLength(EmptyDir, ClosestDistance);

            FColor ClosestColor = PaintedVertices[0].Color;

            // Simple "if smaller, than use smaller one" algorithm
            for (int32 i = 1; i < PaintedVertices.Num(); i++)
            {
                float TempDistance;

                (PaintedVertices[i].Position - Position).ToDirectionAndLength(EmptyDir, TempDistance);

                if (TempDistance < ClosestDistance)
                {
                    ClosestDistance = TempDistance;
                    ClosestColor = PaintedVertices[i].Color;
                }
            }

            return ClosestColor;
        }
        else
        {
            UE_LOG(LogTemp, Error, TEXT("No painted vertices found!"));
        }
    }
    else
    {
        UE_LOG(LogTemp, Error, TEXT("Please provide a valid LODIndex. LODIndex: %d is out of bounds."), LODIndex);
    }

    // Return generic White Color if any error occurred
    return FColor::White;
}