Difference between revisions of "VTK/Examples/Python/GeometricObjects/Display/Polygon"
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+ | ==Polygon.py== | ||
+ | <source lang="python"> | ||
+ | #!/usr/bin/env python | ||
+ | import vtk | ||
+ | |||
+ | # Setup four points | ||
+ | points = vtk.vtkPoints() | ||
+ | points.InsertNextPoint(0.0, 0.0, 0.0) | ||
+ | points.InsertNextPoint(1.0, 0.0, 0.0) | ||
+ | points.InsertNextPoint(1.0, 1.0, 0.0) | ||
+ | points.InsertNextPoint(0.0, 1.0, 0.0) | ||
+ | |||
+ | # Create the polygon | ||
+ | polygon = vtk.vtkPolygon() | ||
+ | polygon.GetPointIds().SetNumberOfIds(4) #make a quad | ||
+ | polygon.GetPointIds().SetId(0, 0) | ||
+ | polygon.GetPointIds().SetId(1, 1) | ||
+ | polygon.GetPointIds().SetId(2, 2) | ||
+ | polygon.GetPointIds().SetId(3, 3) | ||
+ | |||
+ | # Add the polygon to a list of polygons | ||
+ | polygons = vtk.vtkCellArray() | ||
+ | polygons.InsertNextCell(polygon) | ||
+ | |||
+ | # Create a PolyData | ||
+ | polygonPolyData = vtk.vtkPolyData() | ||
+ | polygonPolyData.SetPoints(points) | ||
+ | polygonPolyData.SetPolys(polygons) | ||
+ | |||
+ | # Create a mapper and actor | ||
+ | mapper = vtk.vtkPolyDataMapper() | ||
+ | if vtk.VTK_MAJOR_VERSION <= 5: | ||
+ | mapper.SetInput(polygonPolyData) | ||
+ | else: | ||
+ | mapper.SetInputData(polygonPolyData) | ||
+ | |||
+ | actor = vtk.vtkActor() | ||
+ | actor.SetMapper(mapper) | ||
+ | |||
+ | # Visualize | ||
+ | renderer = vtk.vtkRenderer() | ||
+ | renderWindow = vtk.vtkRenderWindow() | ||
+ | renderWindow.AddRenderer(renderer) | ||
+ | renderWindowInteractor = vtk.vtkRenderWindowInteractor() | ||
+ | renderWindowInteractor.SetRenderWindow(renderWindow) | ||
+ | |||
+ | renderer.AddActor(actor) | ||
+ | renderer.SetBackground(.5,.3,.31) # Background color salmon | ||
+ | |||
+ | renderWindow.Render() | ||
+ | renderWindowInteractor.Start() | ||
+ | </source> |
Latest revision as of 19:51, 27 May 2012
Polygon.py
#!/usr/bin/env python
import vtk
# Setup four points
points = vtk.vtkPoints()
points.InsertNextPoint(0.0, 0.0, 0.0)
points.InsertNextPoint(1.0, 0.0, 0.0)
points.InsertNextPoint(1.0, 1.0, 0.0)
points.InsertNextPoint(0.0, 1.0, 0.0)
# Create the polygon
polygon = vtk.vtkPolygon()
polygon.GetPointIds().SetNumberOfIds(4) #make a quad
polygon.GetPointIds().SetId(0, 0)
polygon.GetPointIds().SetId(1, 1)
polygon.GetPointIds().SetId(2, 2)
polygon.GetPointIds().SetId(3, 3)
# Add the polygon to a list of polygons
polygons = vtk.vtkCellArray()
polygons.InsertNextCell(polygon)
# Create a PolyData
polygonPolyData = vtk.vtkPolyData()
polygonPolyData.SetPoints(points)
polygonPolyData.SetPolys(polygons)
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
if vtk.VTK_MAJOR_VERSION <= 5:
mapper.SetInput(polygonPolyData)
else:
mapper.SetInputData(polygonPolyData)
actor = vtk.vtkActor()
actor.SetMapper(mapper)
# Visualize
renderer = vtk.vtkRenderer()
renderWindow = vtk.vtkRenderWindow()
renderWindow.AddRenderer(renderer)
renderWindowInteractor = vtk.vtkRenderWindowInteractor()
renderWindowInteractor.SetRenderWindow(renderWindow)
renderer.AddActor(actor)
renderer.SetBackground(.5,.3,.31) # Background color salmon
renderWindow.Render()
renderWindowInteractor.Start()