// SISPitch.cpp: implementation of the CSISPitch class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "SISPitch.h"

#include "SISBuffer.h"
#include "SISMath.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

BOOL CSISPitch::CheckPitch(CSISBuffer buffer, CRect rect)
{
	m_xPitch= 0;
	m_yPitch= 0;
	m_Rect= rect;
	
	int xIntPitch= (int)m_xPitchOrigin;
	int yIntPitch= (int)m_yPitchOrigin;
	
	if(xIntPitch < 10 || yIntPitch < 10)
		return FALSE;
	if(rect.top < 0)
		return FALSE;
	CSISHive1B<int64> m_DifferenceHive;
	if(m_DifferenceHive.SetSize(m_xSearchRange*2+ 2, FALSE) < 1)
		return FALSE;
	if(m_DifferenceHive.SetSize(m_ySearchRange*2+ 2, FALSE) < 1)
		return FALSE;
	
	int64 *differences= m_DifferenceHive.GetData(0);
	int i;
	
	double xResult= -1;
	double yResult= -1;
	int x, y, x2, y2;


	x= rect.left;
	y= rect.top;
	x2= x+ xIntPitch- m_xSearchRange;
	y2= y;

	if(rect.left+ xIntPitch+ m_xSearchRange*2+ m_CheckWidth < rect.right)
	{
		for(i= 0; i< m_xSearchRange*2; i++)
		{
			differences[i]= CSISMath::GetAbsDiff(buffer, x, y, m_CheckWidth, m_CheckHeight, buffer, x2+ i, y2);
		}
		xResult= CSISMath::SearchMinimum(differences, m_xSearchRange*2);
	}
	if(xResult >= 0)
	{
		m_xPitch= x2- x+ xResult;
	}else
		m_xPitch= 0;


	x2= x;
	y2= y+ yIntPitch- m_ySearchRange;
	if(rect.top+ yIntPitch+ m_ySearchRange*2+ m_CheckHeight < rect.bottom)
	{
		for(i= 0; i< m_ySearchRange*2; i++)
		{
			differences[i]= CSISMath::GetAbsDiff(buffer, x, y, m_CheckWidth, m_CheckHeight, buffer, x2, y2+ i);
		}
		yResult= CSISMath::SearchMinimum(differences, m_ySearchRange*2);
	}
	if(yResult >= 0)
	{
		m_yPitch= y2- y+ yResult;
	}else
		m_yPitch= 0;
	
	return xResult >= 0 && yResult >= 0;
}