vtk画直线

 vtk中画一条直线，point1为起始点，point2为终止点：

 

vtkRenderer *ren = vtkRenderer::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();
renWin->AddRenderer(ren);

vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow(renWin);

vtkSmartPointer<vtkLineSource> line = vtkSmartPointer<vtkLineSource>::New();
line->SetPoint1(10,10,10);
line->SetPoint2(10,10,50);

vtkSmartPointer<vtkDataSetMapper> line_mapper = vtkSmartPointer<vtkDataSetMapper>::New();
line_mapper->SetInput(line->GetOutput());

vtkSmartPointer<vtkActor> line_actor = vtkSmartPointer<vtkActor>::New();
line_actor->SetMapper(line_mapper);
line_actor->GetProperty()->SetColor(1.0,0,0);
ren->AddActor(line_actor);
ren->SetBackground(1, 1, 1);
renWin->SetSize(450, 450);

vtkInteractorStyleTrackballCamera *style=vtkInteractorStyleTrackballCamera::New();
iren->SetInteractorStyle(style);

iren->Initialize();
renWin->Render();

iren->Start();

 

 

 

也可以在固定的框框中显示直线：

 

vtkRenderer *ren = vtkRenderer::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();
renWin->AddRenderer(ren);

vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow(renWin);

vtkSmartPointer<vtkLineSource> line = vtkSmartPointer<vtkLineSource>::New();
line->SetPoint1(10,10,10);
line->SetPoint2(10,10,50);

vtkSmartPointer<vtkDataSetMapper> line_mapper = vtkSmartPointer<vtkDataSetMapper>::New();
line_mapper->SetInput(line->GetOutput());

vtkSmartPointer<vtkActor> line_actor = vtkSmartPointer<vtkActor>::New();
line_actor->SetMapper(line_mapper);
line_actor->GetProperty()->SetColor(1.0,0,0);
tkOrientationMarkerWidget *widget = vtkOrientationMarkerWidget::New();
    widget->SetOutlineColor( 0.9300, 0.5700, 0.1300 );
    widget->SetOrientationMarker( line_actor );
    widget->SetInteractor( iren );
    widget->SetViewport( 0.85, 0.0, 1, 0.2 );
    widget->SetEnabled( 1 );
    widget->InteractiveOff();
    widget->InteractiveOn();




ren->SetBackground(1, 1, 1);
renWin->SetSize(450, 450);

vtkInteractorStyleTrackballCamera *style=vtkInteractorStyleTrackballCamera::New();
iren->SetInteractorStyle(style);

iren->Initialize();
renWin->Render();

iren->Start();

 

 

本文来源：http://blog.csdn.net/lusmiling/article/details/5655134