[vtkusers] connecting points in from vtkPoints

[David Doria]

Thanks,

David



On Sat, Jan 30, 2010 at 12:25 PM, Rakesh Patil <rakeshthp at in.com> wrote:
> I need to store the points in an array.. but vtkStripper is not returning
> the points.. i tried implementing it as follows
>
> vtkStripper *sp = vtkStripper::New();
>
> sp->SetInputConnection( contFilter->GetOutputPort());
>
> vtkPoints *pt = sp->GetPoints();
>
> Here pt is not showing any values.. It is all empty..
>
> ---------- Original message ----------
> From:Bill Lorensen< bill.lorensen at gmail.com >
> Date: 30 Jan 10 18:44:20
> Subject: Re: [vtkusers] connecting points in from vtkPoints
> To: Rakesh Patil
>
> Use vtkStripper to order the line segments output from vtkContourFilter.
>
> On Fri, Jan 29, 2010 at 5:30 AM, Rakesh Patil wrote:
>> Hello,
>>
>> I have a scatter data, (xyz file), where x and y are long, and lat resp
>> and
>> z is depth. I need to extract a zero contour from this xyz data. I use
>> vtkContourFilter to extract the points for zero contour.
>>
>> I get the points what i require correctly.. But if i connect them
>> serially,
>> it shows that points are connected in a zig-zag form. I get points
>> directly
>> from contuorfilter. i.e.
>>
>> vtkPoints *pts = contFilter->GetOutput()->GetPoints();
>>
>> What and how do i do, so that when i connect the points, i get a decent
>> connected line, instead of zig zag ..?
>>
>> Thanks
>>
>> Regards
>>
>>
>> Dear vtkusers ! Get Yourself a cool, short @in.com Email ID now!
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Try updating the stripper:

vtkSmartPointer<vtkStripper> stripper =
  vtkSmartPointer<vtkStripper>::New();
stripper->SetInputConnection( contFilter->GetOutputPort());
stripper->Update();
vtkPoints *pt = stripper->GetPoints();

Does that change anything?

Dave