/*
Open Asset Import Library (assimp)
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*/

/** @file  fbx_optimizegraph.h
 *  @brief Adapted from Assimp OptimizeGraph.h, declares a post processing step to optimize the fbx scenegraph
 */

#pragma once

#include "assimp/code/Common/BaseProcess.h"
#include "assimp/code/PostProcessing/ProcessHelper.h"

#include <assimp/types.h>

#include <set>

// Forward declarations
struct aiMesh;

class OptimizeGraphProcessTest;

namespace Assimp    {

// -----------------------------------------------------------------------------
/** @brief Postprocessing step to optimize the scenegraph
 *
 *  The implementation tries to merge nodes, even if they use different
 *  transformations.
 *
 */
class FbxOptimizeGraphProcess : public BaseProcess {
public:
	FbxOptimizeGraphProcess();
	~FbxOptimizeGraphProcess();

    // -------------------------------------------------------------------
    bool IsActive( unsigned int pFlags) const override;

    // -------------------------------------------------------------------
    void Execute( aiScene* pScene) override;

    // -------------------------------------------------------------------
    void SetupProperties(const Importer* pImp) override;

protected:
    void CollectNewChildren(aiNode* nd, std::list<aiNode*>& nodes);

private:
    //! Scene we're working with
    aiScene* mScene;

    //! Node counters for logging purposes
    unsigned int nodes_in,nodes_out, count_merged;
};

} // end of namespace Assimp