[vtkusers] Drawing circles?

[Luca Pallozzi Lavorante]

Saigopal Nelaturi wrote:

> Hi..
> I'd like to know how to draw circles within the render window with 
> floating point center and radius. vtkImageCanvasSource2D has a 
> DrawCircle method but this takes in only integer values of the center. 
> On the same subject, is there any function in vtk that will allow 
> sampling of uniformly distributed points on a circle or a line ... ?
>  
> Thanks in advance,
> Sai
>
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Hi Saigopal,
you may laugh at it, but I have solved the problem using the 
vtkDiskSource class. I was able to draw some simple graphs. I don´t know 
if vtkXYPlotActor lets you draw circles (I think not). Of course, this 
solution would fit for less complicated graphs.

greetings

   Luca