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///////////////////////////////////////////////
//// Created by Khudyakov V.A. bober@gorodok.net
//////////////////////////////////////////////

#include "_cvaux.h"
#include "_cvfacedetection.h"

Face::Face(FaceTemplate * lpFaceTemplate)
{
    //init number of face elements;
    m_lFaceFeaturesNumber = lpFaceTemplate->GetCount();
    
    //init array of numbers of foundet face elements of each type
    m_lplFaceFeaturesCount = new long[m_lFaceFeaturesNumber];   
    memset(m_lplFaceFeaturesCount,0,m_lFaceFeaturesNumber*sizeof(long));
    
    //init array of ideal face features
    m_lpIdealFace = new FaceFeature[m_lFaceFeaturesNumber];

    //init array of founded features
    m_lppFoundedFaceFeatures = new FaceFeature*[m_lFaceFeaturesNumber];
    
    for (int i = 0;i < m_lFaceFeaturesNumber;i ++)
    {
        m_lppFoundedFaceFeatures[i] = (new FaceFeature[3*MAX_LAYERS]);
    }

    //set start weight 0
    m_dWeight = 0;  

}//Face::Face(FaceTemplate * lpFaceTemplate)

Face::~Face()
{
    for (int i = 0;i < m_lFaceFeaturesNumber;i ++)
    {
        delete [] (m_lppFoundedFaceFeatures[i]);
    }
    delete [] m_lppFoundedFaceFeatures;
    
    
    delete [] m_lplFaceFeaturesCount;
    delete [] m_lpIdealFace;

}//Face::~Face()


#define UP_SCALE    1
#define DOWN_SCALE  2


////////////
//class RFace(rect based face) 
////////////
RFace::RFace(FaceTemplate * lpFaceTemplate):Face(lpFaceTemplate)
{
    //init ideal face
    FaceFeature * lpTmp = lpFaceTemplate->GetFeatures();
    
    for (int j = 0;j < m_lFaceFeaturesNumber;j ++)
    {
        CvRect * lpTmpRect = NULL;
        lpTmpRect = new CvRect;
        *lpTmpRect = *(CvRect*)lpTmp[j].GetContour(); 
        
        m_lpIdealFace[j].SetContour( lpTmpRect );
        m_lpIdealFace[j].SetWeight( lpTmp[j].GetWeight() );
        m_lpIdealFace[j].SetFeature( lpTmp[j].isFaceFeature() );

    }

    m_bIsGenerated = false;
}//RFace::RFace(FaceTemplate * lpFaceTemplate)

RFace::~RFace()
{

}//RFace::~RFace()

inline bool RFace::isPointInRect(CvPoint p,CvRect rect)
{
    if ( (p.x >= rect.x) && (p.y >= rect.y) && (p.x <= rect.x + rect.width) && (p.y <= rect.y + rect.height) )
        return true;

    return false;
}//inline bool RFace::isPointInRect(CvPoint,CvRect rect)

double RFace::GetWeight()
{
    return m_dWeight;
}//double RFace::GetWeight()


bool RFace::CheckElem(void * lpCandidat,void * lpIdeal)
{
    
    CvRect IdealRect = *(CvRect*)lpIdeal;
    CvRect Rect = *(CvRect*)lpCandidat;

    if (Rect.height > Rect.width)
        return false;
    
    long SizeIdeal = IdealRect.width*IdealRect.height;
    long Size = Rect.width*Rect.height;
    
    if ( (Size > SizeIdeal) || ( Size < (SizeIdeal/5) ) )
        return false;

//  CvRect UpRect;
//  CvRect DownRect;
//  ResizeRect(IdealRect,&UpRect,UP_SCALE,7);
//  ResizeRect(IdealRect,&DownRect,DOWN_SCALE,7);

    long x = Rect.x + cvRound(Rect.width/2);  
    long y = Rect.y + cvRound(Rect.height/2);

    if ( isPointInRect(cvPoint(x,y),IdealRect) )
        return true;
    
//  if ( isPointInRect(cvPoint(Rect.x,Rect.y),UpRect) && 
//       isPointInRect(cvPoint(Rect.x + Rect.width,Rect.y + Rect.height),UpRect ) &&
//       isPointInRect(cvPoint(DownRect.x,DownRect.y),Rect) &&
//       isPointInRect(cvPoint(DownRect.x + DownRect.width,DownRect.y + DownRect.height),Rect) )
//      return true;
    
    
//  if ( isPointInRect(cvPoint(Rect.x,Rect.y),IdealRect) && 
//       isPointInRect(cvPoint(Rect.x + Rect.width,Rect.y + Rect.height),IdealRect ) )
//      return true;
            
    return false;
}//inline bool RFace::CheckElem(CvRect rect)


void RFace::CalculateError(FaceData * lpFaceData)
{
    CvRect LeftEyeRect = lpFaceData->LeftEyeRect;
    CvRect RightEyeRect = lpFaceData->RightEyeRect;
    CvRect MouthRect = lpFaceData->MouthRect;
    
    long LeftSquare = LeftEyeRect.width*LeftEyeRect.height;
    long RightSquare = RightEyeRect.width*RightEyeRect.height;

    long dy = LeftEyeRect.y - RightEyeRect.y;
    
    long dx1 = LeftEyeRect.x + LeftEyeRect.width/2 - MouthRect.x;
    long dx2 = RightEyeRect.x + RightEyeRect.width/2 - MouthRect.x - MouthRect.width;


    lpFaceData->Error = (double)(LeftSquare - RightSquare)*(double)(LeftSquare - RightSquare)/((double)(LeftSquare + RightSquare)*(LeftSquare + RightSquare)) + 
                        (double)(dy*dy)/((double)(LeftEyeRect.height + RightEyeRect.height)*(LeftEyeRect.height + RightEyeRect.height)) + 
                        (double)(dx1*dx1)/((double)MouthRect.width*MouthRect.width) + 
                        (double)(dx2*dx2)/((double)MouthRect.width*MouthRect.width);
                        
}//void RFace::CalculateError(FaceData * lpFaceData)

#define MAX_ERROR 0xFFFFFFFF

void  RFace::CreateFace(void * lpData)
{
    FaceData Data;
    
    double Error = MAX_ERROR;
    double CurError = MAX_ERROR;
    
    FaceData * lpFaceData = (FaceData*)lpData;
    
    int im = 0;//mouth was find
    int jl = 0;//left eye was find
    int kr = 0;//right eye was find
    
    long MouthNumber = 0;
    long LeftEyeNumber = 0;
    long RightEyeNumber = 0;

    for (int i = 0;i < m_lplFaceFeaturesCount[0] + 1;i ++)
    {
        
        if ( !m_lplFaceFeaturesCount[0] )
            Data.MouthRect = *(CvRect*)m_lpIdealFace[0].GetContour();
        else
        {
            if ( i != m_lplFaceFeaturesCount[0] )
                Data.MouthRect = *(CvRect*)m_lppFoundedFaceFeatures[0][i].GetContour();
            im = 1;
        }
            
        
        for (int j = 0;j < m_lplFaceFeaturesCount[1] + 1;j ++)
        {
            
            if ( !m_lplFaceFeaturesCount[1] )
                Data.LeftEyeRect = *(CvRect*)m_lpIdealFace[1].GetContour();
            else
            {
                if (j != m_lplFaceFeaturesCount[1] )
                    Data.LeftEyeRect = *(CvRect*)m_lppFoundedFaceFeatures[1][j].GetContour();
                jl = 1;
            }
            
            
            for (int k = 0;k < m_lplFaceFeaturesCount[2] + 1;k ++)
            {

                if ( !m_lplFaceFeaturesCount[2] )
                    Data.RightEyeRect = *(CvRect*)m_lpIdealFace[2].GetContour();
                else
                {
                    if (k != m_lplFaceFeaturesCount[2] )
                        Data.RightEyeRect = *(CvRect*)m_lppFoundedFaceFeatures[2][k].GetContour();
                    kr = 1;
                }
        
                CalculateError(&Data);      
        
                if ( (im + jl + kr) )
                {
                    Error = Data.Error/(im + jl + kr);
                }else
                    Error = MAX_ERROR;
                
                if (CurError > Error)
                {
                    CurError = Error;
                    MouthNumber = i;
                    LeftEyeNumber = j;
                    RightEyeNumber = k;
                }

            }
        
        
        }

    }

    if ( m_lplFaceFeaturesCount[0] )
        lpFaceData->MouthRect = *(CvRect*)m_lppFoundedFaceFeatures[0][MouthNumber].GetContour();
    else
        lpFaceData->MouthRect = *(CvRect*)m_lpIdealFace[0].GetContour();

    if ( m_lplFaceFeaturesCount[1] )
        lpFaceData->LeftEyeRect = *(CvRect*)m_lppFoundedFaceFeatures[1][LeftEyeNumber].GetContour();
    else
        lpFaceData->LeftEyeRect = *(CvRect*)m_lpIdealFace[1].GetContour();
    
    if ( m_lplFaceFeaturesCount[2] )
        lpFaceData->RightEyeRect = *(CvRect*)m_lppFoundedFaceFeatures[2][RightEyeNumber].GetContour();
    else
        lpFaceData->RightEyeRect = *(CvRect*)m_lpIdealFace[2].GetContour();

    lpFaceData->Error = CurError;

}//void * RFace::CreateFace()

void RFace::Show(IplImage * Image)
{
    for (int i = 0;i < m_lFaceFeaturesNumber;i ++)
    {
        if (m_lplFaceFeaturesCount[i])
        {
            for (int j = 0;j < m_lplFaceFeaturesCount[i];j ++)
            {
                CvRect rect = *(CvRect*)m_lppFoundedFaceFeatures[i][j].GetContour();
                CvPoint p1 = cvPoint(rect.x,rect.y);
                CvPoint p2 = cvPoint(rect.x + rect.width,rect.y + rect.height);
                cvRectangle(Image,p1,p2,CV_RGB(255,0,0),1);
            }
        }
    }

}//void RFace::Show(IplImage * Image)

void RFace::ShowIdeal(IplImage* Image)
{
    for (int i = 0;i < m_lFaceFeaturesNumber;i ++)
    {
        CvRect Rect = *(CvRect*)m_lpIdealFace[i].GetContour();
        CvPoint p1 = cvPoint(Rect.x,Rect.y);
        CvPoint p2 = cvPoint(Rect.x + Rect.width,Rect.y + Rect.height);
        cvRectangle(Image,p1,p2,CV_RGB(0,0,255),1);
    }
}//void RFace::ShowIdeal(IplImage* Image)


inline void RFace::ResizeRect(CvRect Rect,CvRect * lpRect,long lDir,long lD)
{
    if (lDir == UP_SCALE)
    {
        lpRect->x = Rect.x - lD;
        lpRect->y = Rect.y - lD;
        lpRect->width = Rect.width + 2*lD;
        lpRect->height = Rect.height + 2*lD;
    }
    if (lDir == DOWN_SCALE)
    {
        lpRect->x = Rect.x + lD;
        lpRect->y = Rect.y + lD;
        if (Rect.width - 2*lD >= 0)
        {
            lpRect->width = Rect.width - 2*lD;
        }else
            lpRect->width = 0;
        
        if (Rect.height - 2*lD >= 0)
        {
            lpRect->height = Rect.height - 2*lD;
        }else
            lpRect->height = 0;
    }

}// inline void RFace::ResizeRect(CvRect * lpRect,long lDir,long lD)