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65 lines
2.0 KiB
65 lines
2.0 KiB
2 years ago
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#!/usr/bin/env python
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# This example demonstrates how to use implicit modelling.
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import vtk
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from vtk.util.misc import vtkGetDataRoot
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from vtk.util.colors import red, peacock
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VTK_DATA_ROOT = vtkGetDataRoot()
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# Create lines which serve as the "seed" geometry. The lines spell the
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# word "hello".
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reader = vtk.vtkPolyDataReader()
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reader.SetFileName(VTK_DATA_ROOT + "/Data/hello.vtk")
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lineMapper = vtk.vtkPolyDataMapper()
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lineMapper.SetInputConnection(reader.GetOutputPort())
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lineActor = vtk.vtkActor()
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lineActor.SetMapper(lineMapper)
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lineActor.GetProperty().SetColor(red)
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# Create implicit model with vtkImplicitModeller. This computes a
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# scalar field which is the distance from the generating geometry. The
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# contour filter then extracts the geoemtry at the distance value 0.25
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# from the generating geometry.
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imp = vtk.vtkImplicitModeller()
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imp.SetInputConnection(reader.GetOutputPort())
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imp.SetSampleDimensions(110, 40, 20)
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imp.SetMaximumDistance(0.25)
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imp.SetModelBounds(-1.0, 10.0, -1.0, 3.0, -1.0, 1.0)
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contour = vtk.vtkContourFilter()
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contour.SetInputConnection(imp.GetOutputPort())
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contour.SetValue(0, 0.25)
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impMapper = vtk.vtkPolyDataMapper()
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impMapper.SetInputConnection(contour.GetOutputPort())
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impMapper.ScalarVisibilityOff()
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impActor = vtk.vtkActor()
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impActor.SetMapper(impMapper)
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impActor.GetProperty().SetColor(peacock)
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impActor.GetProperty().SetOpacity(0.5)
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# Create the usual graphics stuff.
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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(lineActor)
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ren.AddActor(impActor)
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ren.SetBackground(1, 1, 1)
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renWin.SetSize(600, 250)
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camera = vtk.vtkCamera()
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camera.SetClippingRange(1.81325, 90.6627)
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camera.SetFocalPoint(4.5, 1, 0)
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camera.SetPosition(4.5, 1.0, 6.73257)
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camera.SetViewUp(0, 1, 0)
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camera.Zoom(0.8)
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ren.SetActiveCamera(camera)
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iren.Initialize()
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renWin.Render()
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iren.Start()
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