网站如何备案 流程图,vue做网站的优缺点,大学网站建设工作总结,我有广告位怎么找客户MFCGDI绘制出雷达余晖效果 1.首先要画出静态的坐标轴#xff0c;用双缓冲方法在onpain消息中绘制。绘制方法都比较简单。声明一个内存DC#xff0c;绘制一个圆形#xff0c;再把坐标轴画上去。
void CDlg_RadarScanning::OnPaint()
{CPaintDC dc(this); // device context …MFCGDI绘制出雷达余晖效果 1.首先要画出静态的坐标轴用双缓冲方法在onpain消息中绘制。绘制方法都比较简单。声明一个内存DC绘制一个圆形再把坐标轴画上去。
void CDlg_RadarScanning::OnPaint()
{CPaintDC dc(this); // device context for painting// TODO: 在此处添加消息处理程序代码// 不为绘图消息调用 CDialogEx::OnPaint()GetClientRect(WinRect);CenterPoint.X WinRect.Height()/2.0;CenterPoint.Y CenterPoint.X;ellipseRect2 Rect(2,2,WinRect.Height()-4,WinRect.Height()-4); //外切矩形区域BitRect.Equals(ellipseRect2);pDC this-GetDC();pDC-FillSolidRect(0,0,WinRect.right,WinRect.bottom,RGB(0,0,0));//随后建立与屏幕显示兼容的内存显示设备MemDC.DeleteDC();MemDC.CreateCompatibleDC(pDC);MemBitmap.DeleteObject();MemBitmap.CreateCompatibleBitmap(pDC,WinRect.Width(),WinRect.Height());//将位图选入到内存显示设备中//只有选入了位图的内存显示设备才有地方绘图画到指定的位图上CBitmap *pOldBitMemDC.SelectObject(MemBitmap);Graphics gp(MemDC.m_hDC);gp.SetSmoothingMode(Gdiplus::SmoothingModeHighQuality);//抗锯齿 REAL startAngle 0.0f; // 设置起点角度REAL sweepAngle 360.0f; // 设置旋转角度Brush* brush NULL;brush new SolidBrush(Color::Green);gp.FillEllipse(brush,ellipseRect2.Height/2,ellipseRect2.Height/2,5,5);//圆心// PointF* StarPoint new PointF(1,ellipseRect2.Height/2);
// PointF* EndPoint new PointF(ellipseRect2.Width,ellipseRect2.Height/2);PointF StarPoint(1,ellipseRect2.Height/2);PointF EndPoint(ellipseRect2.Width,ellipseRect2.Height/22);gp.DrawLine(Pen(Color::Green,2),*(StarPoint),*(EndPoint));//水平坐标轴StarPoint.X ellipseRect2.Width/22;EndPoint.X StarPoint.X;StarPoint.Y 1;EndPoint.Y ellipseRect2.Height;gp.DrawLine(Pen(Color::Green,2),*(StarPoint),*(EndPoint));//竖直坐标轴int Gap ellipseRect2.Height/102;//刻度间隙int count 5;for (int i0;icount;i)//同心圆{gp.DrawArc(Pen(Color::Green,2),ellipseRect2,startAngle,sweepAngle);//画圆ellipseRect2.X ellipseRect2.X Gap;ellipseRect2.Y ellipseRect2.Y Gap;ellipseRect2.Width ellipseRect2.Width - 2*Gap;ellipseRect2.Height ellipseRect2.Height-2*Gap;}FontFamily fontFamily(L微软雅黑); Gdiplus::Font myFont(fontFamily, 10, FontStyleRegular, UnitPoint); //第二个是字体大小SolidBrush blackBrush(Color(255, 215, 0)); //半透明文字RGB颜色int iOverrange WinRect.Height()/10;CString strTemp;StringFormat format; format.SetAlignment(StringAlignmentNear); //文本排列方式即在对应位置居中、靠左、靠右for (int i5;i0;i--)//标明刻度{strTemp.Format(%d,i*2);WCHAR* wchar strTemp.AllocSysString(); //wcscpy_s(string, CT2CW(str)); //如果使用MFC中的CString需要这样转换成WCHARPointF school_site((REAL)(5-i)*iOverrange, (REAL)WinRect.Height()/2);//文字放置的像素坐标gp.DrawString(wchar, wcslen(wchar), myFont, school_site, format, blackBrush );//把string绘制到图上 }strTemp.Format(刻度/KM);WCHAR* wchar1 strTemp.AllocSysString();PointF school_site1((REAL)2, (REAL)2);//文字放置的像素坐标gp.DrawString(wchar1, wcslen(wchar1), myFont, school_site1, format, blackBrush );////pDC-TransparentBlt(0,0,WinRect.Height()-1,WinRect.Height()-1,MemDC,0,0,ellipseRect2.Width,ellipseRect2.Height,TRANSPARENT);pDC-BitBlt(0,0,WinRect.Height()-1,WinRect.Height()-1,MemDC,0,0,SRCCOPY);m_iMetersPerPx 10000.0/(WinRect.Height()/2.0);//10KM与图像刻度比例MemDC.SelectObject(pOldBit);gp.ReleaseHDC(MemDC.m_hDC);}
2.其次是绘制一个渐变的扇形区域原点和角度要定好而且要求是能够旋转的扇形。从简单的旋转开始就是模仿秒针旋转。一开始我也是只绘制一根线旋转。图形旋转时会留有上一次的图形所以我们还需要把上一次角度的图形抹掉重新定位新的角度的图形。我选择的办法是开启一个定时器用之前画好的内存DC不断地去覆盖上一张图在覆盖完成后再在上面绘制新角度的旋转图形即可。图形旋转我是用矩阵旋转。 //该代码写在定时器即可static double fPi 4.0*atan(1.0);//180度double fAngle fPi/2,fDAngle 2.0*fPi/60.0;//360度分成60份//转盘看为时钟盘摆针为秒针SYSTEMTIME tmNow;GetLocalTime(tmNow);//s为中心点e为变化后的点两点连起来形成摆针//Pen sPen(Color(255, 0, 0), 3); CPen mypen(PS_SOLID,2,RGB(255,255,255));CPen* pOldPen;CDC* MyDC this-GetDC();pOldPenMyDC-SelectObject(mypen);Point s(CenterPoint.X,CenterPoint.Y), e; double fTime tmNow.wSecond tmNow.wMilliseconds/1000.0 0;//以系统时间为当前比例//double fTime 30;double fAng fPi/2.0 - fTime * (2.0*fPi) /30.0;//360度分的刻度影响摆针旋转速度分得越少越快e.X (int)(CenterPoint.X (WinRect.Height()/2.0) * cos(fAng)); e.Y (int)(CenterPoint.Y - (WinRect.Height()/2.0) * sin(fAng));MyDC-BitBlt(0,0,WinRect.Height(),WinRect.Height(),MemDC,0,0,SRCCOPY);//将内存位图贴上再划线可将上一次图形覆盖//旋转扇形static int angl 10;//每次旋转角度Graphics graphics(MyDC-m_hDC);graphics.SetSmoothingMode(SmoothingModeAntiAlias);//矩阵旋转Matrix matrix;matrix.Translate(CenterPoint.X, CenterPoint.Y, MatrixOrderAppend);//matrix.Scale(2, 2, MatrixOrderAppend);matrix.RotateAt(angl, PointF(CenterPoint.X, CenterPoint.Y), MatrixOrderAppend);matrix.Translate(-CenterPoint.X, -CenterPoint.Y);graphics.SetTransform(matrix); LinearGradientBrush linGrBrush(Point(0,0),Point(120,120),Color(0,255,255,255),Color(255,0,255,100));//渐变画刷//graphics.DrawPie(Pen(Color::Green,2),(int)0, (int)0,WinRect.Height(),WinRect.Height(),0,60);graphics.FillPie(linGrBrush,(int)0, (int)0,WinRect.Height(),WinRect.Height(),0,60);//绘制渐变扇形//graphics.FillRectangle(linGrBrush,(int)CenterPoint.X,(int)CenterPoint.Y, 50, WinRect.Height()/2);angl;//以下均为旋转秒针
// graphics.DrawLine(Pen(Color::White,2),(int)CenterPoint.X,(int)CenterPoint.Y,(int)e.X,(int)e.Y);
// MyDC-MoveTo(CenterPoint.X,CenterPoint.Y);
// MyDC-LineTo(e.X,e.Y);MyDC-SelectObject(pOldPen);ReleaseDC(MyDC);pOldPen-DeleteObject();mypen.DeleteObject();3.下面是添加目标。新建一个透明的对话框叠加到当前雷达扫描的对话框新对话框重绘透明的按钮类再贴图到按钮上还要添加按钮的点击响应消息。然后在雷达扫描窗口上声明新窗口的对象Create窗口。至于每一个按钮都是对应一个封装的结构体里面含有距离、高度和按钮句柄等信息不断地调用movewindow即可实现移动。
//.h
struct FlyBtInfo
{double iDistance;double iHeight;CCDrawButtonTM flyBt;//句柄BOOL bShow;BOOL bSelected;
};
CDlg_DrawFly *m_DrawFlyDlg;
FlyBtInfo m_DrawFly[3];//.cpp
if(m_DrawFlyDlgNULL){m_DrawFlyDlg new CDlg_DrawFly(this);m_DrawFlyDlg-Create(IDD_DLG_DRAWFLY,this);m_DrawFlyDlg-ShowWindow(SW_SHOW);}memcpy(m_DrawFly[0].flyBt,m_DrawFlyDlg-m_OneFlyBt,sizeof(CCDrawButton));m_DrawFly[0].bShowFALSE;m_DrawFly[0].bSelected FALSE;memcpy(m_DrawFly[1].flyBt,m_DrawFlyDlg-m_TwoFlyBt,sizeof(CCDrawButton));m_DrawFly[1].bShowFALSE;m_DrawFly[1].bSelected FALSE;memcpy(m_DrawFly[2].flyBt,m_DrawFlyDlg-m_ThreeFlyBt,sizeof(CCDrawButton));m_DrawFly[2].bShowFALSE;m_DrawFly[2].bSelected FALSE;//第一个定时器
//飞机1static int x1 WinRect.Height()/2.0*(1-sin(3.14/4));if (x1(WinRect.Height()/2)){m_DrawFly[0].flyBt.MoveWindow(x1-10,x1-10,25,25);//m_DrawFly[0].flyBt.Invalidate();m_DrawFly[0].flyBt.ShowWindow(SW_SHOW);//根据刻度算出距离高度这里为十分之一距离double a WinRect.Height()/2-x110;m_DrawFly[0].iDistance sqrt(pow(a,2)*2)*m_iMetersPerPx;m_DrawFly[0].iHeight m_DrawFly[0].iDistance/10;if (m_DrawFly[0].bSelected){UpdateFlyDataToList(0);}x1 ;} else{x1 WinRect.Height()/2.0*(1-sin(3.14/4));}//飞机2static int x2 WinRect.Height()/2-5;static int y2 WinRect.Height()/2-5;int x21 WinRect.Height()/2*(1sin(3.14/4));int y21 WinRect.Height()/2*(1-sin(3.14/4));if (x2x21 || y2y21){m_DrawFly[1].flyBt.MoveWindow(x2,y2,25,25);//m_DrawFly[1].flyBt.Invalidate();m_DrawFly[1].flyBt.ShowWindow(SW_SHOW);double a1 pow(WinRect.Height()/2.0-x2,2);double a2 pow(WinRect.Height()/2.0-y2,2);m_DrawFly[1].iDistance sqrt(a1a2)*m_iMetersPerPx;m_DrawFly[1].iHeight m_DrawFly[1].iDistance/10;if (m_DrawFly[1].bSelected){UpdateFlyDataToList(1);}x2 ;y2 --;}else{x2 WinRect.Height()/2-5;y2 WinRect.Height()/2-5;}下面是用到的几个方法
//更新列表数据
void CDlg_RadarScanning::UpdateFlyDataToList(int iTranceBatch)
{int BatchTemp;int count m_FlydataList.GetItemCount();for (int i 0;icount;i){BatchTemp atoi(m_FlydataList.GetItemText(i,0));if (BatchTemp iTranceBatch){CString strDistance;strDistance.Format(%.2f,m_DrawFly[iTranceBatch].iDistance);m_FlydataList.SetItemText(i,1,strDistance);strDistance.Format(%.2f,m_DrawFly[iTranceBatch].iHeight);m_FlydataList.SetItemText(i,2,strDistance);}}
}
//点击按钮时切换位图
void CDlg_RadarScanning::ChangeFlyColor(int iTranceBatch)
{switch(iTranceBatch){case 0:m_DrawFlyDlg-m_OneFlyBt.UpdateBtn(res\\airport.png,res\\airport.png,res\\airport.png,res\\airport.png,);m_DrawFlyDlg-m_OneFlyBt.Invalidate();m_DrawFlyDlg-m_TwoFlyBt.UpdateBtn(res\\airport4.png,res\\airport4.png,res\\airport4.png,res\\airport4.png,);m_DrawFlyDlg-m_TwoFlyBt.Invalidate();break;case 1:m_DrawFlyDlg-m_OneFlyBt.UpdateBtn(res\\airport2.png,res\\airport2.png,res\\airport2.png,res\\airport2.png,);m_DrawFlyDlg-m_OneFlyBt.Invalidate();m_DrawFlyDlg-m_TwoFlyBt.UpdateBtn(res\\airport5.png,res\\airport5.png,res\\airport5.png,res\\airport5.png,);m_DrawFlyDlg-m_TwoFlyBt.Invalidate();break;}
}//按钮点击消息通过发送消息给主窗口类
void CDlg_DrawFly::OnBnClickedOnedrawbutton()
{m_Parent-SendMessage(WM_DRAWFLY_BT_MSG,IDC_ONEDRAWBUTTON,0);// TODO: 在此添加控件通知处理程序代码
}
void CDlg_DrawFly::OnBnClickedTwodrawbutton()
{// TODO: 在此添加控件通知处理程序代码m_Parent-SendMessage(WM_DRAWFLY_BT_MSG,IDC_TWODRAWBUTTON,0);
}
void CDlg_DrawFly::OnBnClickedThreedrawbutton()
{// TODO: 在此添加控件通知处理程序代码m_Parent-SendMessage(WM_DRAWFLY_BT_MSG,IDC_THREEDRAWBUTTON,0);
}//这个方法用于响应按钮点击事件
LRESULT 主窗口类::OnDrawFlyBTDepose(WPARAM wParam, LPARAM lParam)
{switch(wParam){case IDC_ONEDRAWBUTTON:{m_RadarScanningDlg-ChangeFlyColor(0);m_RadarScanningDlg-m_CurSelectAim 0;m_RadarScanningDlg-m_DrawFly[0].bSelected TRUE;CString strTemp;strTemp.Format(00 跟踪);m_RadarScanningDlg-m_FlydataList.SetItemText(0,0,strTemp);m_RadarScanningDlg-m_FlydataList.SetItemText(1,0,01);}//SelectRadarTrackBatch(0);break;case IDC_TWODRAWBUTTON:{m_RadarScanningDlg-ChangeFlyColor(1);m_RadarScanningDlg-m_CurSelectAim 1;m_RadarScanningDlg-m_DrawFly[1].bSelected TRUE;CString strTemp;strTemp.Format(01 跟踪);m_RadarScanningDlg-m_FlydataList.SetItemText(1,0,strTemp);m_RadarScanningDlg-m_FlydataList.SetItemText(0,0,00);}//SelectRadarTrackBatch(1);break; }return 1;
}总结 使用MFC确实不好做我查了一下很多都是QT。关键是GDI绘图和矩阵旋转比较难。虽然这个是我自己写的但是工程是公司的我不好公开全部代码有什么问题可以问我。
以下是提供可学习 1.GDI学习及代码总结之------画线、区域填充、写字 https://blog.csdn.net/harvic880925/article/details/9023329 2.GDI绘制极坐标图、雷达图 https://blog.csdn.net/iteye_15968/article/details/82334555 3.GDI旋转图片的几种方法 https://blog.csdn.net/fyl_077/article/details/44456213
