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Cone4.m

% 
%  This example demonstrates the creation of multiple actors and the
%  manipulation of their properties and transformations. It is a
%  derivative of Cone.py, see that example for more information.
% 

vtk_init;

%  
%  Next we create an instance of vtkConeSource and set some of its
%  properties. The instance of vtkConeSource "cone" is part of a visualization
%  pipeline (it is a source process object); it produces data (output type is
%  vtkPolyData) which other filters may process.
% 
cone = vtkConeSource ();
cone.SetHeight( 3.0 );
cone.SetRadius( 1.0 );
cone.SetResolution( 10 );

%  
%  In this example we terminate the pipeline with a mapper process object.
%  (Intermediate filters such as vtkShrinkPolyData could be inserted in
%  between the source and the mapper.)  We create an instance of
%  vtkPolyDataMapper to map the polygonal data into graphics primitives. We
%  connect the output of the cone souece to the input of this mapper.
% 
coneMapper = vtkPolyDataMapper();
coneMapper.SetInput(cone.GetOutput());

%  
%  Create an actor to represent the first cone. The actor's properties are
%  modified to give it different surface properties. By default, an actor
%  is create with a property so the GetProperty() method can be used.
% 
coneActor = vtkActor();
coneActor.SetMapper(coneMapper);
coneActor.GetProperty().SetColor(0.2, 0.63, 0.79);
coneActor.GetProperty().SetDiffuse(0.7);
coneActor.GetProperty().SetSpecular(0.4);
coneActor.GetProperty().SetSpecularPower(20);

% 
%  Create a property and directly manipulate it. Assign it to the
%  second actor.
% 
property = vtkProperty();
property.SetColor(1.0, 0.3882, 0.2784);
property.SetDiffuse(0.7);
property.SetSpecular(0.4);
property.SetSpecularPower(20);

% 
%  Create a second actor and a property. The property is directly
%  manipulated and then assigned to the actor. In this way, a single
%  property can be shared among many actors. Note also that we use the
%  same mapper as the first actor did. This way we avoid duplicating
%  geometry, which may save lots of memory if the geoemtry is large.
coneActor2 = vtkActor();
coneActor2.SetMapper(coneMapper);
coneActor2.GetProperty().SetColor(0.2, 0.63, 0.79);
coneActor2.SetProperty(property);
coneActor2.SetPosition(0, 2, 0);

% 
%  Create the Renderer and assign actors to it. A renderer is like a
%  viewport. It is part or all of a window on the screen and it is responsible
%  for drawing the actors it has.  We also set the background color here.
% 
ren1 = vtkRenderer();
ren1.AddActor(coneActor);
ren1.AddActor(coneActor2);
ren1.SetBackground(0.1, 0.2, 0.4);

% 
%  Finally we create the render window which will show up on the screen
%  We put our renderer into the render window using AddRenderer. We also
%  set the size to be 300 pixels by 300.
% 
renWin = vtkRenderWindow();
renWin.AddRenderer(ren1);
renWin.SetSize(300, 300);

% 
%  Now we loop over 360 degreeees and render the cone each time.
% 
for i = 0:360
    sleep(0.03);
    ren1.GetActiveCamera().Azimuth( 1 );
            renWin.Render();
end

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