高手帮帮忙！！给我解释一下这段程序的意思呀！！！！~~~很紧急！！

高手帮帮忙！！给我解释一下这段程序的意思呀！！！！~~~很紧急！！

yexiao_zucc
追风少年
等级:

发表于：2008-05-11 11:52:14 楼主

[b]检测指针圆盘
//CircleDetect(pDoc, SMALLSTEP, 0, 50, 60, 3, &x1, &y1, 0.2);
//CircleDetect(pDoc, SMALLSTEP, 0, 50, 60, 3, &x2, &y2, 0.2);
//CircleDetect(pDoc, SMALLSTEP, 0, 50, 60, 3, &x3, &y3, 0.2);
CircleDetect(pDoc, SMALLSTEP, 0, 40, 60, 60, 40, 3, &x1, &y1, 0.2);
CircleDetect(pDoc, SMALLSTEP, 0, 40, 60, 60, 40, 3, &x2, &y2, 0.2);
CircleDetect(pDoc, SMALLSTEP, 0, 40, 60, 60, 40, 3, &x3, &y3, 0.2);

}

void CProjectView::OnAddTest()
{
// TODO: Add your command handler code here
CPen greenPen(PS_SOLID, 1, RGB(0,255,0));
CPen redPen(PS_SOLID, 1, RGB(255,0,0));

CClientDC pDC(this);
COLORREF red = RGB(255, 0, 0);
CProjectDoc * pDoc = GetDocument();
ASSERT_VALID(pDoc);

//三个指针
pDC.SelectObject(redPen);
pDC.MoveTo(x1, pDoc->BmpHeight -1 -y1);
pDC.LineTo(x1 + (int)(LEN * cos(nAngle1 * 2 * pi / 360)),
pDoc->BmpHeight -1- y1 - (int)(LEN * sin(nAngle1 * 2 * pi / 360)));
pDC.MoveTo(x2, pDoc->BmpHeight - y2);
pDC.LineTo(x2 + (int)(LEN * cos(nAngle2 * 2 * pi / 360)),
pDoc->BmpHeight - y2 -1 - (int)(LEN * sin(nAngle2 * 2 * pi / 360)));
pDC.MoveTo(x3, pDoc->BmpHeight - y3);
pDC.LineTo(x3 + (int)(LEN * cos(nAngle3 * 2 * pi / 360)),
pDoc->BmpHeight - y3 - 1- (int)(LEN * sin(nAngle3 * 2 * pi / 360)));

//三个圆心
pDC.SelectObject(greenPen);
pDC.MoveTo(x1, pDoc->BmpHeight -1- y1);
pDC.LineTo(x2, pDoc->BmpHeight -1- y2);
pDC.MoveTo(x2, pDoc->BmpHeight -1- y2);
pDC.LineTo(x3, pDoc->BmpHeight -1- y3);
pDC.MoveTo(x3, pDoc->BmpHeight -1- y3);
pDC.LineTo(x1, pDoc->BmpHeight -1- y1);

//pDC.MoveTo(100, 100);
//pDC.LineTo(300, 300);

pDC.SetPixel(x, pDoc->BmpHeight - 1- y, red);
/*
int i ;
for(i = 0; i < pDoc->nWidth * pDoc->BmpHeight ; i ++)
{
pDoc->pImage[i] = pDoc->pImageBak[i];
}

Invalidate(TRUE);
*/
}

void CProjectView::OnAddFinger()
{
// TODO: Add your command handler code here
CProjectDoc * pDoc = GetDocument();
ASSERT_VALID(pDoc);
((CMainFrame *)AfxGetMainWnd())->SetStatus("检测指针偏转");

// 检测X1, Y1
FingerDetectNew(x1, y1, pDoc, &fx1, &fy1, &nAngle1);
// 检测X2, Y2
FingerDetectNew(x2, y2, pDoc, &fx2, &fy2, &nAngle2);
// 检测X3, Y3
FingerDetectNew(x3, y3, pDoc, &fx3, &fy3, &nAngle3);
((CMainFrame *)AfxGetMainWnd())->SetStatus("指针偏转检测成功");
AfxMessageBox("指针检测完毕！");
}

void CProjectView::FingerDetectNew(int x, int y, CProjectDoc * pDoc,
int *fx, int *fy, int *Angle)
{
int nLen;
int i, nX, nY, nR;
int nCount[360], nMin, nPos;

nLen = LEN;
nMin = LEN * 255;

for (i = 0; i < 360; i ++)
{
nCount[i] = 0;
nX = x;
nY = y;
for(nR = 0; nR < nLen; nR ++)
{
nX = x + (int)(nR * cos(i * 2 * pi / 360));
nY = y + (int)(nR * sin(i * 2 * pi / 360));
nCount[i] += pDoc->pImageBak[nY * pDoc->nWidth + nX];

//nCount[i] += pDoc->pImageBak[(nY+1) * pDoc->nWidth + nX];
//nCount[i] += pDoc->pImageBak[(nY-1) * pDoc->nWidth + nX];

}
if (nCount[i] < nMin)
{
nMin = nCount[i];
nPos = i;
}
}

(*fx) = x + (int)(nLen * cos(nPos * pi * 2 / 360));
(*fy) = y + (int)(nLen * sin(nPos * pi * 2 / 360));
(*Angle) = nPos;
//AfxMessageBox(""");
}

void CProjectView::FingerDetect(int x, int y, CProjectDoc * pDoc, int *fx, int *fy)
{
//int i, Step;
int xStart, yStart, nTempx, nTempy;
//int mTempx, mTempy, flag;
//以x,y为中心往外面找点，一直找到最近的一个为止StartX, StartY
FindStartPoint(x, y, &xStart, &yStart, pDoc);
nTempx = xStart;
nTempy = yStart;
if (xStart - x > 0)
{
//往上左搜
while((pDoc->pImage[(nTempy + 1) * pDoc->nWidth + nTempx - 1] == 128) ¦ ¦
(pDoc->pImage[(nTempy + 1) * pDoc->nWidth + nTempx] == 128))
{
if (pDoc->pImage[(nTempy + 1) * pDoc->nWidth + nTempx - 1] == 128)
{
nTempy = nTempy + 1;
nTempx = nTempx - 1;
}
else if (pDoc->pImage[(nTempy + 1) * pDoc->nWidth + nTempx] == 128)
{
nTempy = nTempy + 1;
nTempx = nTempx;
}
}
//往下右
}

AfxMessageBox("ok");
//以此点为起点进行跟踪，按照两个不同的方向进行跟踪，一个顺时针，一个逆时针

// 跟踪结束条件为：顺时针的不能往前往右算结束；逆时针为不能往前往左算结束

//比较两个跟踪的最终结果，取离圆心远的那个点

return;
}

void CProjectView::FindStartPoint(int x, int y, int * xStart, int * yStart,
CProjectDoc * pDoc)
{
int i, Step, flag;

Step = 1;
while (1)
{
flag = 0;
for(i = 0; i < Step; i++)
{
//左上
if (pDoc->pImage[(y + i) * pDoc->nWidth + x - Step + i] == 128)
{
(*xStart) = x - Step + i;
(*yStart) = y + i;
flag = 1;
break;
}

//右上
if (pDoc->pImage[(y + Step - i) * pDoc->nWidth + x + i] == 128)
{
(*xStart) = x + i;
(*yStart) = y + Step - i;
flag = 1;
break;
}

//右下
if (pDoc->pImage[(y - i) * pDoc->nWidth + x + Step - i] == 128)
{
(*xStart) = x + Step - i;
(*yStart) = y - i;
flag = 1;
break;
}

if (pDoc->pImage[(y - Step + i) * pDoc->nWidth + x - i] == 128)
{
(*xStart) = x - i;
(*yStart) = y - Step + i;
flag = 1;
break;
}
}
if (flag == 1)
break;
Step ++;
}
}

void CProjectView::OnAddEnd()
{
// TODO: Add your command handler code here

//现在已知x1,y1, x2,y2, x3,y3, fx1,fy1, fx2,fy2, fx3, fy3
//先确定圆心三角形，对于三个点进行确定 0.01 0.001, 0.0001三个指针
double d_l12, d_l13, d_l23;
double nAA1, nAA2, nAA3, nTemp;
BOOL IsBelow;
double k;
int longest, n;

//1.确定长边
longest = 0;

d_l12 = sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2));
d_l13 = sqrt((x1-x3)*(x1-x3) + (y1-y3)*(y1-y3));
d_l23 = sqrt((x3-x2)*(x3-x2) + (y3-y2)*(y3-y2));

if (d_l12 > d_l13)
{
if (d_l12 > d_l23)
{
longest = 12;
}
else
{
longest = 23;
}
}
else
{
if (d_l13 > d_l23)
{
longest = 13;
}
else
{
longest = 23;
}
}

//2.确定第三点在长边的上边还是下边
//3.确定三点位置 0.01-> 1; 0.001->2; 0.0001->3;
switch(longest)
{
case 13:
IsBelow = BelowUpon(x1, y1, x3, y3, x2, y2, nAngle1, nAngle3, nAngle2);
break;
case 23:
IsBelow = BelowUpon(x2, y2, x3, y3, x1, y1, nAngle2, nAngle3, nAngle1);
break;
case 12:
IsBelow = BelowUpon(x1, y1, x2, y2, x3, y3, nAngle1, nAngle2, nAngle3);
break;
}
//输入0指针的偏转角度,以点1为中心，边13顺时针旋转到0指针方向的角度是固定的
//将这个已知角度转化为跟X轴正方向的转角
//计算三根指针的偏转，得到最后读数
k = (double)(y1-y3)/(double)(x1-x3);

if (atan(k) < 0)
nTemp = (-1) * atan(k) * 360 / (2 * pi);
else
nTemp = 180 - atan(k) * 360 / (2 * pi);
nAA1 = (-1) * nAngle1 - THITA - nTemp;
while (nAA1 < 0)
{
nAA1 += 360;
}
nAA2 = (-1) * nAngle2 - THITA - nTemp;
while (nAA2 < 0)
{
nAA2 += 360;
}
nAA3 = (-1) * nAngle3 - THITA - nTemp;
while (nAA3 < 0)
{
nAA3 += 360;
}

CResultDlg dlgResult;
//dlgBaseInfo.SetInfo(pDoc);
CString sTemp;
sTemp = LongToString(x1);
dlgResult.m_X1 = sTemp;
sTemp = LongToString(y1);
dlgResult.m_Y1 = sTemp;

sTemp = LongToString(x2);
dlgResult.m_X2 = sTemp;
sTemp = LongToString(y2);
dlgResult.m_Y2 = sTemp;

sTemp = LongToString(x3);
dlgResult.m_X3 = sTemp;
sTemp = LongToString(y3);
dlgResult.m_Y3 = sTemp;

sTemp = LongToString(x);
dlgResult.m_X = sTemp;
sTemp = LongToString(y);
dlgResult.m_Y = sTemp;

sTemp = LongToString(nAngle1);
dlgResult.m_A1 = sTemp;

sTemp = LongToString(nAngle2);
dlgResult.m_A2 = sTemp;

sTemp = LongToString(nAngle3);
dlgResult.m_A3 = sTemp;

n = (int)(nAA1 / 36);
sTemp = LongToString(n);
dlgResult.m_R1 = sTemp;

n = (int)(nAA2 / 36);
sTemp = LongToString(n);
dlgResult.m_R2 = sTemp;

n = (int)(nAA3 / 36);
sTemp = LongToString(n);
dlgResult.m_R3 = sTemp;

((CMainFrame *)AfxGetMainWnd())->SetStatus("当前显示最后结果");
dlgResult.DoModal();
((CMainFrame *)AfxGetMainWnd())->SetStatus("就绪");

}

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