vtk-mfc框架中显示坐标轴

最新推荐文章于 2021-05-07 13:04:35 发布

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最新推荐文章于 2021-05-07 13:04:35 发布

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原文链接：http://www.cnblogs.com/xiaohaha/archive/2010/02/20/1669836.html

本文介绍了使用VTK库绘制三维坐标轴的具体实现过程，包括窗口尺寸设置、交互器配置、相机视图调整以及坐标轴属性设置等。通过具体代码展示了如何创建并设置vtkTransformPolyDataFilter和vtkAxesActor来实现三维坐标轴的定制化显示。

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借鉴了vtk里WidgetsCxxTests的例子

vtkSmartPointer<vtkTransformPolyDataFilter> transformFilter =
vtkSmartPointer<vtkTransformPolyDataFilter>::New();
vtkSmartPointer<vtkTransform> transform =
vtkSmartPointer<vtkTransform>::New();
transformFilter->SetTransform( transform );

CRect rect;
HWND hWnd = this->GetSafeHwnd();
pvtkMFCWindow->GetClientRect(&rect);
int cx,cy;
cx=rect.Width();
cy=rect.Height();

pvtkMFCWindow->GetRenderWindow()->SetSize( cx, cy );

vtkSmartPointer<vtkRenderWindowInteractor> iren =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
iren->SetRenderWindow( pvtkMFCWindow->GetRenderWindow() );

// set up an interesting view
//
vtkCamera* camera = this->pvtkRenderer->GetActiveCamera();
camera->SetViewUp( 0, 0, 1 );
camera->SetFocalPoint( 0, 0, 0 );
camera->SetPosition( 4.5, 4.5, 2.5 );
this->pvtkRenderer->ResetCameraClippingRange();

// this static function improves the appearance of the text edges
// since they are overlaid on a surface rendering of the cube's faces
//
vtkMapper::SetResolveCoincidentTopologyToPolygonOffset();

vtkSmartPointer<vtkAxesActor> axes2 =
vtkSmartPointer<vtkAxesActor>::New();

// simulate a left-handed coordinate system
//
transform->Identity();
//transform->RotateY(90);
axes2->SetShaftTypeToCylinder();
axes2->SetUserTransform( transform );
axes2->SetXAxisLabelText( "x" );
axes2->SetYAxisLabelText( "y" );
axes2->SetZAxisLabelText( "z" );

axes2->SetTotalLength( 0.5, 0.5, 0.5 );
axes2->SetCylinderRadius( 0.500 * axes2->GetCylinderRadius() );
axes2->SetConeRadius ( 1.025 * axes2->GetConeRadius() );
axes2->SetSphereRadius ( 1.500 * axes2->GetSphereRadius() );

vtkTextProperty* tprop = axes2->GetXAxisCaptionActor2D()->
GetCaptionTextProperty();
tprop->ItalicOn();
tprop->ShadowOn();
tprop->SetFontFamilyToTimes();

axes2->GetYAxisCaptionActor2D()->GetCaptionTextProperty()->ShallowCopy( tprop );
axes2->GetZAxisCaptionActor2D()->GetCaptionTextProperty()->ShallowCopy( tprop );

// combine orientation markers into one with an assembly
//
vtkSmartPointer<vtkPropAssembly> assembly =
vtkSmartPointer<vtkPropAssembly>::New();
assembly->AddPart( axes2 );
// assembly->AddPart( cube );

this->pvtkRenderer->AddViewProp( axes2 );

// iren->Initialize();
pvtkMFCWindow->GetRenderWindow()->Render();

//iren->Start();

return EXIT_SUCCESS;

转载于:https://www.cnblogs.com/xiaohaha/archive/2010/02/20/1669836.html