#include "stdafx.h"
#include "EdgeFind.h"

CEdgeFind::CEdgeFind(void)
{
}

CEdgeFind::~CEdgeFind(void)
{
}

int CEdgeFind::ImageProjection(BYTE* pBuff, int nWidth, int nHeight, CRect ROI, int nThres, int nDist, int nContinue)
{
	//¿¹¿Üó¸®
	if(pBuff == NULL || nWidth <= 0 || nHeight <= 0)
		return -1;

	int nSumLength = ROI.Height();
	int nProjectionLength = ROI.Width();
	int nSumStart = ROI.top;
	int nProjectionStart = ROI.left;
	int nProjectionEnd = nProjectionStart + nProjectionLength;

	if(nProjectionLength < 0 || nSumLength < 0)
		return -1;

	if(nWidth < ROI.Width() || nHeight < ROI.Height())
		return -1;

	int* pnSum = new int[nWidth + nDist];
	nThres *= nSumLength;
	ZeroMemory(pnSum, sizeof(int) * (nWidth + nDist));
	int nSumLine, nProjectionLine;
	int nGab;
	int nContinueCount = 0;
	int nLine = 0;
	for (nProjectionLine = nProjectionStart; nProjectionLine < nProjectionEnd; nProjectionLine++)
	{
		for (nSumLine = nSumStart; nSumLine < nSumStart + nSumLength; nSumLine++)
		{
			pnSum[nProjectionLine] += *(pBuff + nProjectionLine + nSumLine * nWidth);
		}

		if (nProjectionLine >= nDist)
		{
			nGab = pnSum[nProjectionLine - nDist] - pnSum[nProjectionLine];
			if (nGab < 0)
				nGab *= -1;
			if (nGab > nThres)
				nContinueCount++;
			else
				nContinueCount = 0;

			//¿¬¼ÓÀ¸·Î nContinue ÀÌ»ó ³ª¿À¸é
			if (nContinueCount >= nContinue)
			{
				delete [] pnSum;
				return nProjectionLine - (nContinue - 1);
			}
		}
	}
	delete [] pnSum;
	return -1;
}

int CEdgeFind::ImageProjection_R(BYTE* pBuff, int nWidth, int nHeight, CRect ROI, int nThres, int nDist, int nContinue)
{
	//¿¹¿Üó¸®
	if(pBuff == NULL || nWidth <= 0 || nHeight <= 0)
		return -1;

	int nSumLength = ROI.Height();
	int nProjectionLength = ROI.Width();
	int nSumStart = ROI.top;
	int nProjectionStart = ROI.right;
	int nProjectionEnd = nProjectionStart - nProjectionLength;

	if(nProjectionLength < 0 || nSumLength < 0)
		return -1;

	if(nWidth < ROI.Width() || nHeight < ROI.Height())
		return -1;

	int* pnSum = new int[nWidth + nDist];
	nThres *= nSumLength;
	ZeroMemory(pnSum, sizeof(int) * (nWidth + nDist));
	int nSumLine, nProjectionLine;
	int nGab;
	int nContinueCount = 0;
	int nLine = 0;
	for (nProjectionLine = nProjectionStart - 1; nProjectionLine >= nProjectionEnd; nProjectionLine--)
	{
		for (nSumLine = nSumStart; nSumLine < nSumStart + nSumLength; nSumLine++)
		{
			pnSum[nProjectionLine] += *(pBuff + nProjectionLine + nSumLine * nWidth);
		}

		if (nProjectionLine <= nProjectionStart - 1 - nDist)
		{
			nGab = pnSum[nProjectionLine + nDist] - pnSum[nProjectionLine];
			if (nGab < 0)
				nGab *= -1;
			if (nGab > nThres)
				nContinueCount++;
			else
				nContinueCount = 0;

			//¿¬¼ÓÀ¸·Î nContinue ÀÌ»ó ³ª¿À¸é
			if (nContinueCount >= nContinue)
			{
				delete [] pnSum;
				return nProjectionLine + (nContinue - 1);
			}
		}
	}
	delete [] pnSum;
	return -1;
}

int CEdgeFind::ImageProjection_Vert(BYTE* pBuff, int nWidth, int nHeight, CRect ROI, int nThres, int nDist, int nContinue)
{
	//¿¹¿Üó¸®
	if(pBuff == NULL || nWidth <= 0 || nHeight <= 0)
		return -1;

	int nSumLength = ROI.Width();
	int nProjectionLength = ROI.Height();
	int nSumStart = ROI.left;
	int nProjectionStart = ROI.top;
	int nProjectionEnd = nProjectionStart + nProjectionLength;

	if(nProjectionLength < 0 || nSumLength < 0)
		return -1;

	if(nWidth < ROI.Width() || nHeight < ROI.Height())
		return -1;

	int* pnSum = new int[nHeight + nDist];
	nThres *= nSumLength;
	ZeroMemory(pnSum, sizeof(int) * (nHeight + nDist));
	int nSumLine, nProjectionLine;
	int nGab;
	int nContinueCount = 0;
	int nLine = 0;
	for (nProjectionLine = nProjectionStart; nProjectionLine < nProjectionEnd; nProjectionLine++)
	{
		for (nSumLine = nSumStart; nSumLine < nSumStart + nSumLength; nSumLine++)
		{
			pnSum[nProjectionLine] += *(pBuff + nSumLine + nProjectionLine * nWidth);
		}

		if (nProjectionLine >= nDist)
		{
			nGab = pnSum[nProjectionLine - nDist] - pnSum[nProjectionLine];
			if (nGab < 0)
				nGab *= -1;
			if (nGab > nThres)
				nContinueCount++;
			else
				nContinueCount = 0;

			//¿¬¼ÓÀ¸·Î nContinue ÀÌ»ó ³ª¿À¸é
			if (nContinueCount >= nContinue)
			{
				delete [] pnSum;
				return nProjectionLine - (nContinue - 1);
			}
		}
	}
	delete [] pnSum;
	return -1;
}

int CEdgeFind::ImageProjection_Vert_R(BYTE* pBuff, int nWidth, int nHeight, CRect ROI, int nThres, int nDist, int nContinue)
{
	//¿¹¿Üó¸®
	if(pBuff == NULL || nWidth <= 0 || nHeight <= 0)
		return -1;

	int nSumLength = ROI.Width();
	int nProjectionLength = ROI.Height();
	int nSumStart = ROI.left;
	int nProjectionStart = ROI.bottom;
	int nProjectionEnd = nProjectionStart - nProjectionLength;

	if(nProjectionLength < 0 || nSumLength < 0)
		return -1;

	if(nWidth < ROI.Width() || nHeight < ROI.Height())
		return -1;

	int* pnSum = new int[nHeight + nDist];
	nThres *= nSumLength;
	ZeroMemory(pnSum, sizeof(int) * (nHeight + nDist));
	int nSumLine, nProjectionLine;
	int nGab;
	int nContinueCount = 0;
	int nLine = 0;
	for (nProjectionLine = nProjectionStart - 1; nProjectionLine >= nProjectionEnd; nProjectionLine--)
	{
		for (nSumLine = nSumStart; nSumLine < nSumStart + nSumLength; nSumLine++)
		{
			pnSum[nProjectionLine] += *(pBuff + nSumLine + nProjectionLine * nWidth);
		}

		if (nProjectionLine <= nProjectionStart - 1 - nDist)
		{
			nGab = pnSum[nProjectionLine + nDist] - pnSum[nProjectionLine];
			if (nGab < 0)
				nGab *= -1;
			if (nGab > nThres)
				nContinueCount++;
			else
				nContinueCount = 0;

			//¿¬¼ÓÀ¸·Î nContinue ÀÌ»ó ³ª¿À¸é
			if (nContinueCount >= nContinue)
			{
				delete [] pnSum;
				return nProjectionLine + (nContinue - 1);
			}
		}
	}
	delete [] pnSum;
	return -1;
}