[vtkusers] Re: larger points

[Cory Quammen]

>
> Hi
>
> I have used vtkPolyData to make a plot of a point cloud but having a
> poor eye sight I can hardly see the cloud. Is there any way of telling
> vtk to use larger points (cells).
>
>
Kamran,

You can set the point size property in the vtkActor that represents your
point cloud. For example, say you have Java code that follows this outline:

vtkPolyData yourData;
vtkPolyDataMapper mapper = new vtkPolyDataMapper();
mapper.SetInput(yourData);

vtkActor actor = new vtkActor();
actor.SetMapper(mapper);

You then get the properties from the actor and call the SetPointSize()
method like this:

// Now set the point size
vtkProperty property = actor.GetProperty();
float desiredPointSize = 5.0;
property.SetPointSize(desiredPointSize);

I think you'll also need to set the representation of the poly data to
points, but you may not need to do this explicitly:

property.SetRepresentationToPoints();

Hope this helps,
Cory


-- 
Cory Quammen
University of North Carolina at Chapel Hill
http://www.cs.unc.edu/~cquammen
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