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58 lines
1.8 KiB
58 lines
1.8 KiB
2 years ago
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#!/usr/bin/env python
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# This simple example shows how to do basic rendering and pipeline
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# creation. It also demonstrates the use of the LODActor.
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# Import the VTK-Python module
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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 *
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# Get the location of the data.
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VTK_DATA_ROOT = vtkGetDataRoot()
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# This creates a polygonal cylinder model with eight circumferential
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# facets.
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part = vtk.vtkSTLReader()
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part.SetFileName(VTK_DATA_ROOT + "/Data/42400-IDGH.stl")
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# The mapper is responsible for pushing the geometry into the graphics
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# library. It may also do color mapping, if scalars or other
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# attributes are defined.
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partMapper = vtk.vtkPolyDataMapper()
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partMapper.SetInputConnection(part.GetOutputPort())
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# The LOD actor is a special type of actor. It will change appearance
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# in order to render faster. At the highest resolution, it renders
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# ewverything just like an actor. The middle level is a point cloud,
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# and the lowest level is a simple bounding box.
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partActor = vtk.vtkLODActor()
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partActor.SetMapper(partMapper)
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partActor.GetProperty().SetColor(light_grey)
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partActor.RotateX(30.0)
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partActor.RotateY(-45.0)
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# Create the graphics structure. The renderer renders into the render
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# window. The render window interactor captures mouse events and will
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# perform appropriate camera or actor manipulation depending on the
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# nature of the events.
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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(partActor)
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ren.SetBackground(0.1, 0.2, 0.4)
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renWin.SetSize(200, 200)
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# We'll zoom in a little by accessing the camera and invoking a "Zoom"
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# method on it.
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ren.ResetCamera()
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ren.GetActiveCamera().Zoom(1.5)
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# This starts the event loop.
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iren.Initialize()
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renWin.Render()
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iren.Start()
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