BalloonWidget
VTKExamples/Python/Widgets/BalloonWidget
Code¶
BalloonWidget.py
#!/usr/bin/env python import vtk # Sphere sphereSource = vtk.vtkSphereSource() sphereSource.SetCenter(-4.0, 0.0, 0.0) sphereSource.SetRadius(4.0) sphereMapper = vtk.vtkPolyDataMapper() sphereMapper.SetInputConnection(sphereSource.GetOutputPort()) sphereActor = vtk.vtkActor() sphereActor.SetMapper(sphereMapper) # Regular Polygon regularPolygonSource = vtk.vtkRegularPolygonSource() regularPolygonSource.SetCenter(4.0, 0.0, 0.0) regularPolygonSource.SetRadius(4.0) regularPolygonMapper = vtk.vtkPolyDataMapper() regularPolygonMapper.SetInputConnection(regularPolygonSource.GetOutputPort()) regularPolygonActor = vtk.vtkActor() regularPolygonActor.SetMapper(regularPolygonMapper) # A renderer and render window renderer = vtk.vtkRenderer() renderWindow = vtk.vtkRenderWindow() renderWindow.AddRenderer(renderer) # An interactor renderWindowInteractor = vtk.vtkRenderWindowInteractor() renderWindowInteractor.SetRenderWindow(renderWindow) # Create the widget balloonRep = vtk.vtkBalloonRepresentation() balloonRep.SetBalloonLayoutToImageRight() balloonWidget = vtk.vtkBalloonWidget() balloonWidget.SetInteractor(renderWindowInteractor) balloonWidget.SetRepresentation(balloonRep) balloonWidget.AddBalloon(sphereActor,"This is a sphere") balloonWidget.AddBalloon(regularPolygonActor,"This is a regular polygon") # Add the actors to the scene renderer.AddActor(sphereActor) renderer.AddActor(regularPolygonActor) # Render an image (lights and cameras are created automatically) renderWindow.Render() balloonWidget.EnabledOn() # Begin mouse interaction renderWindowInteractor.Start() renderWindowInteractor.Initialize()