MFC扩展编程实例3D并列叠加柱形图创建与交互操作
三维的柱形图还可以细分很多类别,比如叠加的,簇形的,并列叠加等等。
当前这个例程实现两个并列叠加显示的三维柱形图,效果如下图:
MFC扩展编程实例3D并列叠加柱形图创建与交互操作
图中两个系列叠加为一根柱形,两柱形为一组并列显示。
界面上还有按钮可以设置数据标签的显示位置,另一按钮可以设置数据系列的填充渐变样式。
圆形控件可以对图表进行左右上下等旋转操作。
例程也实现通过鼠标来交互操作图表,鼠标右键按着不放可以上下左右滚动图表。
键盘左shift按着,鼠标左键可以平移图表,鼠标中键可以缩放图表。
下面是实现过程与关键代码。
创建基于class CMy123View : public CBCGPFormView 的单文档工程,
视窗对话框界面添加图片控件IDC_ROTATE,IDC_CHART,用于操作图表和显示图表。
再添加变量与函数与虚函数Create,在Create内初始化变量。
CBCGPChartCtrl m_wndChart;
CBCGPRotationCtrl m_wndRotate;
void RotateChart(CBCGPRotationObject::RotationElement hit, double xDelta = 10., double yDelta = 10., double persperctiveDelta = 0.1);
- void CMy123View::RotateChart(CBCGPRotationObject::RotationElement hit, double xDelta, double yDelta, double persperctiveDelta)
- {
- CBCGPChartVisualObject* pChart = m_wndChart.GetChart();
- if (pChart == NULL)
- return;
- ASSERT_VALID(pChart);
- CBCGPChartDiagram3D* pDiagram3D = pChart->GetDiagram3D();
- if (pDiagram3D == NULL)
- return;
- double xRotation = pDiagram3D->GetXRotation();
- double yRotation = pDiagram3D->GetYRotation();
- double dblPerspectivePercent = pDiagram3D->GetPerspectivePercent();
- switch (hit)
- {
- case CBCGPRotationObject::BCGP_ROTATION_RESET:
- pDiagram3D->Reset(TRUE);
- return;
- case CBCGPRotationObject::BCGP_ROTATION_UP:
- yRotation += yDelta;
- break;
- case CBCGPRotationObject::BCGP_ROTATION_DOWN:
- yRotation -= yDelta;
- break;
- case CBCGPRotationObject::BCGP_ROTATION_LEFT:
- xRotation -= xDelta;
- break;
- case CBCGPRotationObject::BCGP_ROTATION_RIGHT:
- xRotation += xDelta;
- break;
- case CBCGPRotationObject::BCGP_ROTATION_NARROW_FIELD_OF_VIEW:
- dblPerspectivePercent -= persperctiveDelta;
- break;
- case CBCGPRotationObject::BCGP_ROTATION_WIDEN_FIELD_OF_VIEW:
- dblPerspectivePercent += persperctiveDelta;
- break;
- }
- pDiagram3D->SetPosition(xRotation, yRotation, dblPerspectivePercent);
- pChart->SetDirty(TRUE,TRUE);
- }
复制代码- BOOL CMy123View::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext)
- {
- BOOL bRst = CBCGPFormView::Create(lpszClassName, lpszWindowName, dwStyle, rect, pParentWnd, nID, pContext);;
- m_wndRotate.SubclassDlgItem(IDC_ROTATE,this);
- m_wndRotate.GetRotationObject()->SetAutorepeatMode(100);
- m_wndRotate.GetRotationObject()->SetColorTheme(CBCGPRotationObject::BCGP_COLOR_THEME_VISUAL_MANAGER);
- m_wndRotate.GetRotationObject()->EnablePart(CBCGPRotationObject::BCGP_ROTATION_CLOCKWISE, FALSE);
- m_wndRotate.GetRotationObject()->EnablePart(CBCGPRotationObject::BCGP_ROTATION_COUNTER_CLOCKWISE, FALSE);
- m_wndRotate.GetRotationObject()->EnableFlatIcons();
- //获取图表指针;
- m_wndChart.SubclassDlgItem(IDC_CHART,this);//子类化图表;
- CBCGPChartVisualObject* pChart = m_wndChart.GetChart();
- pChart->SetChartTitle(_T("3D叠加柱形图"));//图表标题设置;
- pChart->SetThemeOpacity(70);//图表主题透明度设置;
- pChart->EnableMouseTrackingMode(BCGPChartHitInfo::HIT_DIAGRAM);
- BCGPChartCategory category = BCGPChartColumn3D;//图表种类,F12查看全部;
- BCGPChartType type = BCGP_CT_100STACKED;//BCGP_CT_SIMPLE;//BCGP_CT_STACKED;//图表类型,按F12查看全部;
- pChart->SetChartType(category, type);//设置图表类别;
- // pChart->GetDiagram3D()->SetGrouped(TRUE, FALSE);//配合BCGP_CT_SIMPLE可设置为簇状类型图表;
- //设置3D背部与底部;
- DWORD dwoFlags = CBCGPChartDiagram3D::DWO_OUTLINE_ALL;
- dwoFlags |= (CBCGPChartDiagram3D::DWO_DRAW_ALL_WALLS | CBCGPChartDiagram3D::DWO_DRAW_FLOOR);
- pChart->GetDiagram3D()->SetDrawWallOptions((CBCGPChartDiagram3D::DrawWallOptions)dwoFlags);
- pChart->GetDiagram3D()->SetThickWallsAndFloor(true);
- //创建4个数据系列;
- CBCGPChartBarSeries* pBarSeries1 = DYNAMIC_DOWNCAST(CBCGPChartBarSeries, pChart->CreateSeries(_T("能源")));
- CBCGPChartBarSeries* pBarSeries2 = DYNAMIC_DOWNCAST(CBCGPChartBarSeries, pChart->CreateSeries(_T("税收")));
- CBCGPChartBarSeries* pBarSeries3 = DYNAMIC_DOWNCAST(CBCGPChartBarSeries, pChart->CreateSeries(_T("维护")));
- CBCGPChartBarSeries* pBarSeries4 = DYNAMIC_DOWNCAST(CBCGPChartBarSeries, pChart->CreateSeries(_T("其他")));
- //将系列设置相同组ID,可实现并列显示;
- pBarSeries1->SetGroupID(0);
- pBarSeries2->SetGroupID(0);
- pBarSeries3->SetGroupID(1);
- pBarSeries4->SetGroupID(1);
-
- //向四个数据系列添加数据;
- srand((unsigned)time(NULL));
- COleDateTime now = COleDateTime::GetCurrentTime();
- CString sYear;
- for(int i=5;i>0;i--)
- {
- sYear.Format(_T("%d"), now.GetYear() - i);
- pBarSeries1->AddDataPoint(sYear, rand()%20+1);
- }
- pBarSeries2->AddDataPoint(10);
- pBarSeries2->AddDataPoint(12);
- pBarSeries2->AddDataPoint(15);
- pBarSeries2->AddDataPoint(17);
- pBarSeries2->AddDataPoint(12);
- pBarSeries3->AddDataPoint(5);
- pBarSeries3->AddDataPoint(7);
- pBarSeries3->AddDataPoint(11);
- pBarSeries3->AddDataPoint(14);
- pBarSeries3->AddDataPoint(19);
- pBarSeries4->AddDataPoint(2);
- pBarSeries4->AddDataPoint(3);
- pBarSeries4->AddDataPoint(5);
- pBarSeries4->AddDataPoint(3);
- pBarSeries4->AddDataPoint(2);
- //添加添加到布局管理器统一管理布局;
- if (GetLayout() == NULL)
- return bRst;
- CBCGPStaticLayout* pLayout = (CBCGPStaticLayout*)GetLayout();
- if (pLayout == NULL)
- return bRst;
- pLayout->AddAnchor(m_wndChart.GetDlgCtrlID(), CBCGPStaticLayout::e_MoveTypeNone, CBCGPStaticLayout::e_SizeTypeBoth);
- //
- return bRst;
- }
复制代码 在创建图表时,关键代码是设置图表种类与样式,
BCGPChartCategory category = BCGPChartColumn3D;//图表种类,F12查看全部;
BCGPChartType type = BCGP_CT_100STACKED;//BCGP_CT_SIMPLE;//BCGP_CT_STACKED;//图表类型,按F12查看全部;
pChart->SetChartType(category, type);//设置图表类别;
如果还想实现并列显示,可以type设置为叠加样式BCGP_CT_STACKED,BCGP_CT_100STACKED,再对数据系列分组。
pBarSeries1->SetGroupID(0);
pBarSeries2->SetGroupID(0);
pBarSeries3->SetGroupID(1);
pBarSeries4->SetGroupID(1);
例程有用到布局管理,所以在视窗类构造函数中调用函数EnableLayout()开启。
这样图表就创建好了。
然后是对图表操作控件m_wndRotate点击函数响应,关联函数OnRotate。
- void CMy123View::OnRotate()
- {
- RotateChart(m_wndRotate.GetRotationObject()->GetClicked());
- }
复制代码 这样通过m_wndRotate控件就可以操作图表了。
最后是实现鼠标交互操作,关联鼠标点击与平移函数。
通过上两函数来实现图表交互操作。
afx_msg LRESULT OnMouseTrack(WPARAM wp, LPARAM lp);
afx_msg LRESULT OnMouseDown(WPARAM wp, LPARAM lp);
ON_REGISTERED_MESSAGE(BCGM_ON_CHART_MOUSE_TRACK, OnMouseTrack)
ON_REGISTERED_MESSAGE(BCGM_ON_CHART_MOUSE_DOWN, OnMouseDown)
- CPoint ptOrigin;
- LRESULT CMy123View::OnMouseDown(WPARAM /*wp*/, LPARAM lp)
- {
- BCGPChartHitInfo* pHitInfo = (BCGPChartHitInfo*)lp;
- if(pHitInfo->m_nMouseButton ==0)
- ptOrigin = pHitInfo->m_ptHit;
- return false;
- }
- LRESULT CMy123View::OnMouseTrack(WPARAM /*wp*/, LPARAM lp)
- {
- CBCGPChartVisualObject* pChart = m_wndChart.GetChart();
- if(pChart == NULL)
- return false;
- BCGPChartHitInfo* pHitInfo = (BCGPChartHitInfo*)lp;
- if(pHitInfo->m_ptHit == CBCGPPoint(-1, -1))
- return false;
- if(0x8000 & GetKeyState(VK_RBUTTON ) )
- {
- CString sText;
- CBCGPPoint pt = pHitInfo->m_ptHit;
- double p = sqrt( pow(pt.x-ptOrigin.x,2)+pow(pt.y-ptOrigin.y,2) );
- if(p<10)
- return false;
- double dbAng = asin( (pt.y-ptOrigin.y) /p)*(180.0 / 3.1415926);
-
- //dbAng转换为对应逆时针一圈角度(0-360);
- if( pt.x>ptOrigin.x)
- {
- if(dbAng<0)
- dbAng = abs(dbAng);
- else
- dbAng= abs(360-dbAng);
- }
- else
- {
- if(dbAng<0)
- dbAng = 180+dbAng;
- else
- dbAng = 180+dbAng;
- }
- sText.Format(_T("%.03lf"),dbAng);
- SetDlgItemText(IDC_EDIT1,sText);
- //
- int nDir=0,nDel=360/16;
- if(0<=dbAng && dbAng<nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_LEFT;
- else if(nDel<=dbAng && dbAng<3*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_NONE;//BCGP_ROTATION_NARROW_FIELD_OF_VIEW;
- else if(3*nDel<=dbAng && dbAng<5*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_DOWN;
- else if(5*nDel<=dbAng && dbAng<7*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_NONE;//BCGP_ROTATION_CLOCKWISE;
- else if(7*nDel<=dbAng && dbAng<9*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_RIGHT;
- else if(9*nDel<=dbAng && dbAng<11*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_NONE;//BCGP_ROTATION_WIDEN_FIELD_OF_VIEW;
- else if(11*nDel<=dbAng && dbAng<13*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_UP;
- else if(13*nDel<=dbAng && dbAng<15*nDel)
- nDir = CBCGPRotationObject::BCGP_ROTATION_NONE;//BCGP_ROTATION_COUNTER_CLOCKWISE;
- else if(15*nDel<=dbAng && dbAng<360)
- nDir = CBCGPRotationObject::BCGP_ROTATION_LEFT;
- RotateChart((CBCGPRotationObject::RotationElement)nDir,10.0,10.0);
- }
- if(0x8000 & GetKeyState(VK_LSHIFT ))
- pChart->SetZoomScrollConfig(BCGPChartMouseConfig::ZSO_WHEEL_PAN);
- else
- pChart->SetZoomScrollConfig(BCGPChartMouseConfig::ZSO_NONE);
- ptOrigin = pHitInfo->m_ptHit;
- return false;
- }
复制代码 例程用到的MFC扩展库可以在网站搜索下载,内带有使用教程。
例程源代码下载地址:
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