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94 lines
3.0 KiB
94 lines
3.0 KiB
2 years ago
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#!/usr/bin/env python
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#
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# This example demonstrates the creation of multiple actors and the
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# manipulation of their properties and transformations. It is a
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# derivative of Cone.py, see that example for more information.
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#
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import vtk
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import time
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#
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# Next we create an instance of vtkConeSource and set some of its
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# properties. The instance of vtkConeSource "cone" is part of a visualization
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# pipeline (it is a source process object); it produces data (output type is
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# vtkPolyData) which other filters may process.
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#
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cone = vtk.vtkConeSource ()
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cone.SetHeight( 3.0 )
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cone.SetRadius( 1.0 )
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cone.SetResolution( 10 )
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#
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# In this example we terminate the pipeline with a mapper process object.
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# (Intermediate filters such as vtkShrinkPolyData could be inserted in
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# between the source and the mapper.) We create an instance of
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# vtkPolyDataMapper to map the polygonal data into graphics primitives. We
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# connect the output of the cone souece to the input of this mapper.
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#
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coneMapper = vtk.vtkPolyDataMapper()
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coneMapper.SetInputConnection(cone.GetOutputPort())
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#
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# Create an actor to represent the first cone. The actor's properties are
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# modified to give it different surface properties. By default, an actor
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# is create with a property so the GetProperty() method can be used.
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#
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coneActor = vtk.vtkActor()
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coneActor.SetMapper(coneMapper)
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coneActor.GetProperty().SetColor(0.2, 0.63, 0.79)
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coneActor.GetProperty().SetDiffuse(0.7)
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coneActor.GetProperty().SetSpecular(0.4)
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coneActor.GetProperty().SetSpecularPower(20)
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#
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# Create a property and directly manipulate it. Assign it to the
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# second actor.
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#
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property = vtk.vtkProperty()
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property.SetColor(1.0, 0.3882, 0.2784)
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property.SetDiffuse(0.7)
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property.SetSpecular(0.4)
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property.SetSpecularPower(20)
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#
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# Create a second actor and a property. The property is directly
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# manipulated and then assigned to the actor. In this way, a single
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# property can be shared among many actors. Note also that we use the
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# same mapper as the first actor did. This way we avoid duplicating
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# geometry, which may save lots of memory if the geoemtry is large.
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coneActor2 = vtk.vtkActor()
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coneActor2.SetMapper(coneMapper)
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coneActor2.GetProperty().SetColor(0.2, 0.63, 0.79)
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coneActor2.SetProperty(property)
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coneActor2.SetPosition(0, 2, 0)
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#
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# Create the Renderer and assign actors to it. A renderer is like a
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# viewport. It is part or all of a window on the screen and it is responsible
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# for drawing the actors it has. We also set the background color here.
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#
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ren1 = vtk.vtkRenderer()
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ren1.AddActor(coneActor)
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ren1.AddActor(coneActor2)
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ren1.SetBackground(0.1, 0.2, 0.4)
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#
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# Finally we create the render window which will show up on the screen
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# We put our renderer into the render window using AddRenderer. We also
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# set the size to be 300 pixels by 300.
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#
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renWin = vtk.vtkRenderWindow()
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renWin.AddRenderer(ren1)
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renWin.SetSize(300, 300)
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#
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# Now we loop over 360 degreeees and render the cone each time.
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#
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for i in range(0,360):
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time.sleep(0.03)
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renWin.Render()
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ren1.GetActiveCamera().Azimuth( 1 )
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