📄 piddlg.cpp
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if(minX>0)
minX=0;
//如果原点必须在Y轴上，加上下面2行，否则注释掉
if(minY>0)
minY=0;
//确定图象显示大小
int width=860;
int height=300;
//确定坐标图四周预留的空白大小
const int mytop=20;
const int mybottom=20;
const int myleft=80;
const int myright=50;
const int topextend=20;
//确定X，Y轴每单位显示宽度
double intervalX=(width-myleft-myright)/(maxX-minX);
double intervalY=(height-mybottom-mytop)/(maxY-minY);
//绘制X，Y轴
poldpen1=pDC->SelectObject(&pen_bian);
//X轴从图形区域最左端到最右端
double bottomY=0;
double leftX=0;
//bottomY表示X轴的y值，leftX表示Y轴的x值
if(minY>0)
bottomY=minY;
if(minX>0)
leftX=minX;
pDC->MoveTo(int(myleft),int(height-(mybottom+(bottomY-minY)*intervalY)));
pDC->LineTo(int(width-myright+topextend),int(height-(mybottom+(bottomY-minY)*intervalY)));
pDC->LineTo(int(width-myright+topextend-10),int(height-(mybottom+(bottomY-minY)*intervalY)-5));
pDC->MoveTo(int(width-myright+topextend),int(height-(mybottom+(bottomY-minY)*intervalY)));
pDC->LineTo(int(width-myright+topextend-10),int(height-(mybottom+(bottomY-minY)*intervalY)+5));
//Y轴从图形区域最底端到最顶端
pDC->MoveTo(int(myleft+(leftX-minX)*intervalX),int(height-mybottom));
pDC->LineTo(int(myleft+(leftX-minX)*intervalX),int(mytop-topextend));
pDC->LineTo(int(myleft+(leftX-minX)*intervalX-5),int(mytop-topextend+10));
pDC->MoveTo(int(myleft+(leftX-minX)*intervalX),int(mytop-topextend));
pDC->LineTo(int(myleft+(leftX-minX)*intervalX+5),int(mytop-topextend+10));
//绘制刻度和刻度值
CString str;
//X轴
poldpen3=pDC->SelectObject(&pen_grid);
const int count=10;
//确定每个显示刻度之间的宽度
double spaceX=(width-myleft-myright)/count;
double spaceY=(height-mybottom-mytop)/count;
for(i=1;i<count+1;i++)
{
str.Format("%.1f",/*minX+i*(maxX-minX)/count*/i*maxX/count);
pDC->MoveTo(int(myleft+spaceX*i),int(height-(mybottom+(bottomY-minY)*intervalY)));
//pDC->LineTo(int(myleft+spaceX*i),int(height-(mybottom+(bottomY-minY)*intervalY+5)));
pDC->LineTo(int(myleft+spaceX*i),int(height-(mybottom+spaceY*count)));
pDC->TextOut(int(myleft+spaceX*i-10),
int(height-(mybottom+(bottomY-minY)*intervalY-5)),str);
}
//Y轴
for(i=1;i<=count;i++)
{
str.Format("%.1f",/*minY+i*(maxY-minY)/count*/i*maxY/count);
pDC->MoveTo(int(myleft+(leftX-minX)*intervalX),int(height-(mybottom+spaceY*i)));
pDC->LineTo(int(width-myright),int(height-(mybottom+spaceY*i)));
pDC->TextOut(int(myleft+(leftX-minX)*intervalX-30),
int(height-(mybottom+spaceY*i+8)),str);
}
//绘制X，Y轴的变量名
pDC->TextOut(width-80,height,"时间(t)");
pDC->TextOut(20,height-290,"Y(t)");
pDC->SelectObject(poldpen1);
//绘制曲线。由于绘图坐标的Y轴是向下延升，所以这里每个点的Y值是用图象高度减去y值大小。
poldpen2=pDC->SelectObject(&pen_bian2);
pDC->MoveTo(int(myleft),
int(height-(mybottom+YI[0]*intervalY)));
pDC->LineTo(int(myleft+initX[0]*intervalX),
int(height-(mybottom+YI[1]*intervalY)));
for(i=1;i<num;i++)
{
pDC->LineTo(int(myleft+initX[i]*intervalX),
int(height-(mybottom+YI[i]*intervalY)));
}
}
void CPIDDlg::OnConfig()
{
// TODO: Add your control notification handler code here
CWnd* pWnd=GetDlgItem(IDC_STATIC_SHOW);
pWnd->Invalidate();
pWnd->UpdateWindow();
CDC *pDC=pWnd->GetDC();
// pDC->SetBkColor(RGB(0,255,255));
CPen pen_bian,*poldpen1;
pen_bian.CreatePen(PS_SOLID,2,RGB(0,0,255));
poldpen1=pDC->SelectObject(&pen_bian);
CPen pen_bian2,*poldpen2;
pen_bian2.CreatePen(PS_SOLID,1,RGB(255,0,0));
poldpen2=pDC->SelectObject(&pen_bian2);
CPen pen_grid,*poldpen3;
pen_grid.CreatePen(PS_DOT,1,RGB(0,0,255));
const int num=100;
double initX[num];//={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
double initY[num];//={2,5,1,8,8,17,25,35.2,40.1,50,33.3,28.4,22.2,24.1,26.2,18.3,14.1,24.7,18,6};
//分别取得X和Y最大值,最小值
initX[0]=0;
initY[0]=0;
for(int i=0;i<num;i++)
{
initX[i]=i+1;
initY[i]=i+1;
}
UpdateData();
double U[num];
U[0]=0;
double Y[num];
Y[0]=0;
Y[1]=0;
for( i=2;i<num;i++)
{
U[i-1]=m_stepU0;
double a=(-1)*(m_sampleT)/(m_paramT1);
double b=(-2)*(m_sampleT)/(m_paramT1);
double c= exp(a);
double d= exp(b);
Y[i]=2*c*(Y[i-1])-d*(Y[i-2])+(m_paramK1)*(1-c+a*c)*(U[i-1])-(m_paramK1)*(1-c+a)*c*(U[i-2]);
YI[i]=Y[i];
}
double maxX=initX[0];
double minX=initX[0];
double maxY=initY[0];
double minY=initY[0];
double MAXY=Y[0];
double MINY=Y[0];
for( i=0;i<num;i++)
{
if(initX[i]>maxX)
maxX=initX[i];
if(initX[i]<minX)
minX=initX[i];
if(initY[i]>maxY)
maxY=initY[i];
if(initY[i]<minY)
minY=initY[i];
if(Y[i]>MAXY)
MAXY=Y[i];
if(Y[i]<MINY)
MINY=Y[i];
}
// m_chuanxian=MAXY;
//如果原点必须在X轴上，加上下面2行，否则注释掉
if(minX>0)
minX=0;
//如果原点必须在Y轴上，加上下面2行，否则注释掉
if(minY>0)
minY=0;
//确定图象显示大小
int width=860;
int height=300;
//确定坐标图四周预留的空白大小
const int mytop=20;
const int mybottom=20;
const int myleft=80;
const int myright=50;
const int topextend=20;
//确定X，Y轴每单位显示宽度
double intervalX=(width-myleft-myright)/(maxX-minX);
double intervalY=(height-mybottom-mytop)/(maxY-minY);
//绘制X，Y轴
poldpen1=pDC->SelectObject(&pen_bian);
//X轴从图形区域最左端到最右端
double bottomY=0;
double leftX=0;
//bottomY表示X轴的y值，leftX表示Y轴的x值
if(minY>0)
bottomY=minY;
if(minX>0)
leftX=minX;
pDC->MoveTo(int(myleft),int(height-(mybottom+(bottomY-minY)*intervalY)));
pDC->LineTo(int(width-myright+topextend),int(height-(mybottom+(bottomY-minY)*intervalY)));
pDC->LineTo(int(width-myright+topextend-10),int(height-(mybottom+(bottomY-minY)*intervalY)-5));
pDC->MoveTo(int(width-myright+topextend),int(height-(mybottom+(bottomY-minY)*intervalY)));
pDC->LineTo(int(width-myright+topextend-10),int(height-(mybottom+(bottomY-minY)*intervalY)+5));
//Y轴从图形区域最底端到最顶端
pDC->MoveTo(int(myleft+(leftX-minX)*intervalX),int(height-mybottom));
pDC->LineTo(int(myleft+(leftX-minX)*intervalX),int(mytop-topextend));
pDC->LineTo(int(myleft+(leftX-minX)*intervalX-5),int(mytop-topextend+10));
pDC->MoveTo(int(myleft+(leftX-minX)*intervalX),int(mytop-topextend));
pDC->LineTo(int(myleft+(leftX-minX)*intervalX+5),int(mytop-topextend+10));
//绘制刻度和刻度值
CString str;
//X轴
poldpen3=pDC->SelectObject(&pen_grid);
const int count=10;
//确定每个显示刻度之间的宽度
double spaceX=(width-myleft-myright)/count;
double spaceY=(height-mybottom-mytop)/count;
for(i=1;i<count+1;i++)
{
str.Format("%.1f",/*minX+i*(maxX-minX)/count*/i*maxX/count);
pDC->MoveTo(int(myleft+spaceX*i),int(height-(mybottom+(bottomY-minY)*intervalY)));
//pDC->LineTo(int(myleft+spaceX*i),int(height-(mybottom+(bottomY-minY)*intervalY+5)));
pDC->LineTo(int(myleft+spaceX*i),int(height-(mybottom+spaceY*count)));
pDC->TextOut(int(myleft+spaceX*i-10),
int(height-(mybottom+(bottomY-minY)*intervalY-5)),str);
}
//Y轴
for(i=1;i<=count;i++)
{
str.Format("%.1f",/*minY+i*(maxY-minY)/count*/i*maxY/count);
pDC->MoveTo(int(myleft+(leftX-minX)*intervalX),int(height-(mybottom+spaceY*i)));
pDC->LineTo(int(width-myright),int(height-(mybottom+spaceY*i)));
pDC->TextOut(int(myleft+(leftX-minX)*intervalX-30),
int(height-(mybottom+spaceY*i+8)),str);
}
//绘制X，Y轴的变量名
pDC->TextOut(width-80,height,"时间(t)");
pDC->TextOut(20,height-290,"Y(t)");
pDC->SelectObject(poldpen1);
//绘制曲线。由于绘图坐标的Y轴是向下延升，所以这里每个点的Y值是用图象高度减去y值大小。
poldpen2=pDC->SelectObject(&pen_bian2);
pDC->MoveTo(int(myleft),
int(height-(mybottom+YI[0]*intervalY)));
pDC->LineTo(int(myleft+initX[0]*intervalX),
int(height-(mybottom+YI[1]*intervalY)));
for(i=1;i<num;i++)
{
pDC->LineTo(int(myleft+initX[i]*intervalX),
int(height-(mybottom+YI[i]*intervalY)));
}
}
void CPIDDlg::OnChuandi()
{
// TODO: Add your control notification handler code here
UpdateData(false);
}
void CPIDDlg::OnCancel()
{
// TODO: Add extra cleanup here
CDialog::OnCancel();
}
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