/*****************************************************************//**
 * @file    FITKShellFeatureEdges.h
 * @brief   The feature edges and boundary edges filter.
 *  
 * @author  ChengHaotian (yeguangbaozi@foxmail.com)
 * @date    2024-05-16
 *********************************************************************/

#ifndef FITKSHELLFEATUREEDGES_H
#define FITKSHELLFEATUREEDGES_H

#include "vtkPolyDataAlgorithm.h"

#include "FITKVTKAlgorithmAPI.h"

#include <map>
#include <vector>
#include <array>

#include <QMap>
#include <QVector>

class vtkIncrementalPointLocator;

/**
 * @brief   Override vtkFeatureEdges.
 * @author  ChengHaotian (yeguangbaozi@foxmail.com)
 * @date    2024-03-25
 */
class FITKVTKALGORITHMAPI FITKShellFeatureEdges : public vtkPolyDataAlgorithm
{
public:
    vtkTypeMacro(FITKShellFeatureEdges, vtkPolyDataAlgorithm );
    void PrintSelf( ostream& os, vtkIndent indent ) override;

    /**
   * Construct object with feature angle = 30; all types of edges extracted
   * and colored.
   */
    static FITKShellFeatureEdges* New( );
    //@{
    /**
   * Turn on/off the extraction of boundary edges.
   */
    vtkSetMacro( BoundaryEdges, vtkTypeBool );
    vtkGetMacro( BoundaryEdges, vtkTypeBool );
    vtkBooleanMacro( BoundaryEdges, vtkTypeBool );
    //@}

    //@{
    /**
   * Turn on/off the extraction of feature edges.
   */
    vtkSetMacro( FeatureEdges, vtkTypeBool );
    vtkGetMacro( FeatureEdges, vtkTypeBool );
    vtkBooleanMacro( FeatureEdges, vtkTypeBool );
    //@}

    //@{
    /**
   * Specify the feature angle for extracting feature edges.
   */
    vtkSetClampMacro( FeatureAngle, double, 0.0, 180.0 );
    vtkGetMacro( FeatureAngle, double );
    //@}

    //@{
    /**
   * Turn on/off the extraction of non-manifold edges.
   */
    vtkSetMacro( NonManifoldEdges, vtkTypeBool );
    vtkGetMacro( NonManifoldEdges, vtkTypeBool );
    vtkBooleanMacro( NonManifoldEdges, vtkTypeBool );
    //@}

    //@{
    /**
   * Turn on/off the extraction of manifold edges.
   */
    vtkSetMacro( ManifoldEdges, vtkTypeBool );
    vtkGetMacro( ManifoldEdges, vtkTypeBool );
    vtkBooleanMacro( ManifoldEdges, vtkTypeBool );
    //@}

    //@{
    /**
   * Turn on/off the coloring of edges by type.
   */
    vtkSetMacro( Coloring, vtkTypeBool );
    vtkGetMacro( Coloring, vtkTypeBool );
    vtkBooleanMacro( Coloring, vtkTypeBool );

   /**
   * 设置是否
   */
    vtkSetMacro( PassThroughIds, vtkTypeBool );
    vtkGetMacro( PassThroughIds, vtkTypeBool );
    vtkBooleanMacro( PassThroughIds, vtkTypeBool );
    //@}

    //@{
    /**
   * Set / get a spatial locator for merging points. By
   * default an instance of vtkMergePoints is used.
   */
    void SetLocator( vtkIncrementalPointLocator* locator );
    vtkGetObjectMacro( Locator, vtkIncrementalPointLocator );
    //@}

    /**
   * Create default locator. Used to create one when none is specified.
   */
    void CreateDefaultLocator( );

    /**
   * Return MTime also considering the locator.
   */
    vtkMTimeType GetMTime( ) override;

    //@{
    /**
   * Set/get the desired precision for the output types. See the documentation
   * for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of
   * the available precision settings.
   */
    vtkSetMacro( OutputPointsPrecision, int );
    vtkGetMacro( OutputPointsPrecision, int );
    //@}
    /**
    * @brief 通过点号，获取线单元
    * @return 线单元编号
    * @param ptID 点编号
    * @author xiewenxi (xwx14@qq.com)
    * @date 2023-09-14
    */
    const std::vector< int >& getLinesByPt( int ptID ) const;
    /**
    * @brief 由特征边单元号获得其表面单元
    * @return 表面单元id
    * @param 特征边单元号
    * @author xiewenxi (xwx14@qq.com)
    * @date 2023-10-30
    */
    const std::vector< int >& getEdgeCells(int iEdgeCellID,bool* b ) const;
    //const std::map< int, std::vector< int > >& getEdgeCellMap( ) const;
    /**
    * @brief 由表面单元获取特征线单元号
    * @return 特征线单元号
    * @param 表面单元号
    * @author xiewenxi (xwx14@qq.com)
    * @date 2023-10-31
    */
    const QVector< int >& getSurCellEdge( int iCell,bool* b=nullptr ) const;

    int getSurfacePointIDByEdgePointID( int edgePointID );

    ///**
    // * @brief   根据线单元索引获取原始表面中该线的索引。
    // * @param   edgeCellId：线单元索引
    // * @param   surfaceCellId：原始表面单元索引[引用]
    // * @return  表面单元中该线的索引
    // * @author  ChengHaotian (yeguangbaozi@foxmail.com)
    // * @date    2024-04-23
    // */
    //int getEdgeIndex(int edgeCellId, int& surfaceCellId);

 protected:
     FITKShellFeatureEdges( );
    ~FITKShellFeatureEdges( ) override;

    // Usual data generation method
    int RequestData( vtkInformation*, vtkInformationVector**, vtkInformationVector* ) override;
    int RequestUpdateExtent( vtkInformation*, vtkInformationVector**, vtkInformationVector* ) override;
    // 特征角度，edge两侧的面单元大于此角度的，会被定义为特征edge
    double                      FeatureAngle;
    vtkTypeBool                 BoundaryEdges;
    vtkTypeBool                 FeatureEdges;
    vtkTypeBool                 NonManifoldEdges;
    vtkTypeBool                 ManifoldEdges;
    vtkTypeBool                 Coloring;
    QMap< int, QVector< int > > _surEdegeIDMap;

    //// 线单元与原始表面单元与索引映射。
    //// Key为线单元索引
    //// Value 1 为线单元所属原始表面单元索引
    //// Value 2 为线单元在原始表面单元内索引（第几条边）
    //QHash<int, QPair<int, int>> m_edgeSurfaceHash;

    /// <记录特征节点ID与面节点ID映射
    QMap< int, int > _edgeSurfacePointIDMap;
    // 是否需要记录原id,包括单元id与节点id
    vtkTypeBool                 PassThroughIds;
    int                         OutputPointsPrecision;
    vtkIncrementalPointLocator* Locator;
    // 用于记录每个点对应的线（key为输入polyData的点id，value为输出polyData的线单元编号）
    std::map< int, std::vector< int > > _ptLines;
    std::vector< int >                  _nullVec = {};
    std::map< int, std::vector< int > > _edgeSurCell={};

private:
    FITKShellFeatureEdges( const FITKShellFeatureEdges& ) = delete;
    void operator=( const FITKShellFeatureEdges& ) = delete;
};

#endif // FITKSHELLFEATUREEDGES_H