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  following disclaimer.

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*/

/** @file Defines a post processing step to split large meshes into sub-meshes

 */

#ifndef AI_SPLITLARGEMESHES_H_INC

#define AI_SPLITLARGEMESHES_H_INC

#include <vector>

#include "Common/BaseProcess.h"

#include <assimp/mesh.h>

#include <assimp/scene.h>

// Forward declarations

class SplitLargeMeshesTest;

namespace Assimp {

class SplitLargeMeshesProcess_Triangle;

class SplitLargeMeshesProcess_Vertex;

// NOTE: If you change these limits, don't forget to change the

// corresponding values in all Assimp ports

// **********************************************************

// Java: ConfigProperty.java,

//  ConfigProperty.DEFAULT_VERTEX_SPLIT_LIMIT

//  ConfigProperty.DEFAULT_TRIANGLE_SPLIT_LIMIT

// **********************************************************

// default limit for vertices

#if (!defined AI_SLM_DEFAULT_MAX_VERTICES)

#   define AI_SLM_DEFAULT_MAX_VERTICES      1000000

#endif

// default limit for triangles

#if (!defined AI_SLM_DEFAULT_MAX_TRIANGLES)

#   define AI_SLM_DEFAULT_MAX_TRIANGLES     1000000

#endif

// ---------------------------------------------------------------------------

/** Post-processing filter to split large meshes into sub-meshes

 *

 * Applied BEFORE the JoinVertices-Step occurs.

 * Returns NON-UNIQUE vertices, splits by triangle number.

*/

class ASSIMP_API SplitLargeMeshesProcess_Triangle : public BaseProcess {

    friend class SplitLargeMeshesProcess_Vertex;

public:

    // -------------------------------------------------------------------

    /// The default class constructor / destructor.

    SplitLargeMeshesProcess_Triangle();

    ~SplitLargeMeshesProcess_Triangle() override = default;

    // -------------------------------------------------------------------

    /** Returns whether the processing step is present in the given flag.

    * @param pFlags The processing flags the importer was called with. A

    *   bitwise combination of #aiPostProcessSteps.

    * @return true if the process is present in this flag fields,

    *   false if not.

    */

    bool IsActive( unsigned int pFlags) const override;

    // -------------------------------------------------------------------

    /** Called prior to ExecuteOnScene().

    * The function is a request to the process to update its configuration

    * basing on the Importer's configuration property list.

    */

    void SetupProperties(const Importer* pImp) override;

    //! Set the split limit - needed for unit testing

    inline void SetLimit(unsigned int l)

        {LIMIT = l;}

    //! Get the split limit

    inline unsigned int GetLimit() const

        {return LIMIT;}

    // -------------------------------------------------------------------

    /** Executes the post processing step on the given imported data.

    * At the moment a process is not supposed to fail.

    * @param pScene The imported data to work at.

    */

    void Execute( aiScene* pScene) override;

    // -------------------------------------------------------------------

    //! Apply the algorithm to a given mesh

    void SplitMesh (unsigned int a, aiMesh* pcMesh,

        std::vector<std::pair<aiMesh*, unsigned int> >& avList);

    // -------------------------------------------------------------------

    //! Update a node in the asset after a few of its meshes

    //! have been split

    static void UpdateNode(aiNode* pcNode,

        const std::vector<std::pair<aiMesh*, unsigned int> >& avList);

public:

    //! Triangle limit

    unsigned int LIMIT;

};

// ---------------------------------------------------------------------------

/** Post-processing filter to split large meshes into sub-meshes

 *

 * Applied AFTER the JoinVertices-Step occurs.

 * Returns UNIQUE vertices, splits by vertex number.

*/

class ASSIMP_API SplitLargeMeshesProcess_Vertex : public BaseProcess {

public:

    SplitLargeMeshesProcess_Vertex();

    ~SplitLargeMeshesProcess_Vertex() override = default;

    // -------------------------------------------------------------------

    /** Returns whether the processing step is present in the given flag field.

    * @param pFlags The processing flags the importer was called with. A bitwise

    *   combination of #aiPostProcessSteps.

    * @return true if the process is present in this flag fields, false if not.

    */

    bool IsActive( unsigned int pFlags) const override;

    // -------------------------------------------------------------------

    /** Called prior to ExecuteOnScene().

    * The function is a request to the process to update its configuration

    * basing on the Importer's configuration property list.

    */

    void SetupProperties(const Importer* pImp) override;

    //! Set the split limit - needed for unit testing

    inline void SetLimit(unsigned int l)

        {LIMIT = l;}

    //! Get the split limit

    inline unsigned int GetLimit() const

        {return LIMIT;}

    // -------------------------------------------------------------------

    /** Executes the post processing step on the given imported data.

    * At the moment a process is not supposed to fail.

    * @param pScene The imported data to work at.

    */

    void Execute( aiScene* pScene) override;

    // -------------------------------------------------------------------

    //! Apply the algorithm to a given mesh

    void SplitMesh (unsigned int a, aiMesh* pcMesh,

        std::vector<std::pair<aiMesh*, unsigned int> >& avList);

    // NOTE: Reuse SplitLargeMeshesProcess_Triangle::UpdateNode()

public:

    //! Triangle limit

    unsigned int LIMIT;

};

} // end of namespace Assimp

#endif // !!AI_SPLITLARGEMESHES_H_INC