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47 lines
1.4 KiB
47 lines
1.4 KiB
#!/usr/bin/env python
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# This simple example shows how to render a very large image (i.e.
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# one that cannot fit on the screen).
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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'll import some data to start. Since we are using an importer,
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# we've got to give it a render window and such. Note that the render
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# window size is set fairly small.
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ren = vtk.vtkRenderer()
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ren.SetBackground(0.1, 0.2, 0.4)
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renWin = vtk.vtkRenderWindow()
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renWin.AddRenderer(ren)
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renWin.SetSize(125, 125)
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iren = vtk.vtkRenderWindowInteractor()
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iren.SetRenderWindow(renWin)
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importer = vtk.vtk3DSImporter()
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importer.SetRenderWindow(renWin)
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importer.SetFileName(VTK_DATA_ROOT + "/Data/Viewpoint/iflamigm.3ds")
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importer.ComputeNormalsOn()
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importer.Read()
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# We'll set up the view we want.
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ren.GetActiveCamera().SetPosition(0, 1, 0)
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ren.GetActiveCamera().SetFocalPoint(0, 0, 0)
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ren.GetActiveCamera().SetViewUp(0, 0, 1)
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# Let the renderer compute a good position and focal point.
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ren.ResetCamera()
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ren.GetActiveCamera().Dolly(1.4)
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ren.ResetCameraClippingRange()
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renderLarge = vtk.vtkRenderLargeImage()
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renderLarge.SetInput(ren)
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renderLarge.SetMagnification(4)
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# We write out the image which causes the rendering to occur. If you
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# watch your screen you might see the pieces being rendered right
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# after one another.
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writer = vtk.vtkPNGWriter()
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writer.SetInputConnection(renderLarge.GetOutputPort())
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writer.SetFileName("largeImage.png")
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writer.Write()
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