backgroundBvhBuilder.h

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/*******************************************************************************
** Copyright (c) 2025 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/


#pragma once

#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>
#include "vantageTerrainImplementation/bvhTriangleMeshShape.h"
#include <memory>
#include <tbb/concurrent_queue.h>
#include <tbb/task_group.h>
#include <tbb/task_arena.h>
#include <thread>
#include <mutex>
#include <condition_variable>

class DT_DLL_vantageTerrainImplementation DtBackgroundBvhBuilder
{
public:
   explicit DtBackgroundBvhBuilder(size_t maxThreads);

   virtual ~DtBackgroundBvhBuilder();

   virtual void addTrianleMeshShape(DtBvhTriangleMeshShape::Ptr shape);

protected:
   static void threadMain(DtBackgroundBvhBuilder* builder);

   tbb::concurrent_queue<DtBvhTriangleMeshShape::Ptr> myShapesToProcess;

   std::atomic<bool> myShutdownFlag;

   std::thread* myProcessingThread;

   std::mutex myMutex;

   std::condition_variable myThreadCV;

   std::unique_ptr<tbb::task_arena> myTaskArena;

   std::unique_ptr<tbb::task_group> myTaskGroup;
};