[vtkusers] Create a circle in a polydata

[siqi chen]

Dave,

Here is the function I use to create a polydata circle.

void CircleInit( vtkPoints *points, int radius, int *center )
{
    vtkRegularPolygonSource * poly = vtkRegularPolygonSource::New();
    poly->GeneratePolygonOff();
    poly->SetNumberOfSides(50);
    poly->SetRadius(radius);
    poly->SetCenter(center[0],center[1],0);
    poly->Update();
    points->DeepCopy(poly->GetOutput()->GetPoints());
    poly->Delete();
}

Siqi


On Mon, Dec 28, 2009 at 10:50 AM, David Doria
<daviddoria+vtk at gmail.com<daviddoria%2Bvtk at gmail.com>
> wrote:

> I noticed that there is not a "vtkCircleSource". What is the best way
> to create a circle in a polydata? I am trying to make varying size
> circles for the vtkVoxelContoursToSurfaceFilter example. Should I use
> vtkSphereSource and vtkCutter? Does it make sense to add a
> vtkCircleSource class?
>
> Thanks,
>
> David
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