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55 lines
1.8 KiB
55 lines
1.8 KiB
#!/usr/bin/env python
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# This example shows how to use decimation to reduce a polygonal
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# mesh. We also use mesh smoothing and generate surface normals to
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# give a pleasing result.
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import vtk
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from vtk.util.misc import vtkGetDataRoot
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VTK_DATA_ROOT = vtkGetDataRoot()
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# We start by reading some data that was originally captured from a
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# Cyberware laser digitizing system.
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fran = vtk.vtkPolyDataReader()
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fran.SetFileName(VTK_DATA_ROOT + "/Data/fran_cut.vtk")
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# We want to preserve topology (not let any cracks form). This may
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# limit the total reduction possible, which we have specified at 90%.
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deci = vtk.vtkDecimatePro()
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deci.SetInputConnection(fran.GetOutputPort())
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deci.SetTargetReduction(0.9)
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deci.PreserveTopologyOn()
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smoother = vtk.vtkSmoothPolyDataFilter()
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smoother.SetInputConnection(deci.GetOutputPort())
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smoother.SetNumberOfIterations(50)
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normals = vtk.vtkPolyDataNormals()
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normals.SetInputConnection(smoother.GetOutputPort())
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normals.FlipNormalsOn()
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franMapper = vtk.vtkPolyDataMapper()
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franMapper.SetInputConnection(normals.GetOutputPort())
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franActor = vtk.vtkActor()
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franActor.SetMapper(franMapper)
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franActor.GetProperty().SetColor(1.0, 0.49, 0.25)
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# Create the RenderWindow, Renderer and both Actors
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ren = vtk.vtkRenderer()
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renWin = vtk.vtkRenderWindow()
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renWin.AddRenderer(ren)
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iren = vtk.vtkRenderWindowInteractor()
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iren.SetRenderWindow(renWin)
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# Add the actors to the renderer, set the background and size
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ren.AddActor(franActor)
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ren.SetBackground(1, 1, 1)
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renWin.SetSize(250, 250)
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cam1 = vtk.vtkCamera()
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cam1.SetClippingRange(0.0475572, 2.37786)
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cam1.SetFocalPoint(0.052665, -0.129454, -0.0573973)
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cam1.SetPosition(0.327637, -0.116299, -0.256418)
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cam1.SetViewUp(-0.0225386, 0.999137, 0.034901)
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ren.SetActiveCamera(cam1)
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iren.Initialize()
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renWin.Render()
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iren.Start()
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