[vtkusers] How to insert points to construct a 3d object

Jothybasu Selvaraj jothybasu at gmail.com
Tue Mar 6 09:50:07 EST 2012


How is your xyz calculated?

Do you read it from afile or calculate manually?

Jothy

On Tue, Mar 6, 2012 at 2:45 PM, Melissa Goh <melissagoh27 at gmail.com> wrote:

> Hi David,
>
> I have attached a screenshot of the 3d object. Below is my code snippets:
>
> *vtkPolyData strip = new vtkPolyData();
> vtkPoints points = new vtkPoints();
>
> for (int i=0; i<xyz.length; i++){
>      points.InsertNextPoint(xyz[i][0], xyz[i][1], xyz[i][2]);
> }
> strip.SetPoints(points);
>
> vtkSurfaceReconstructionFilter surface = new
> vtkSurfaceReconstructionFilter();
> surface.SetInput(strip);
> vtkContourFilter cf = new vtkContourFilter();
> cf.SetInputConnection(surface.GetOutputPort());
> cf.SetValue(0,0.0);
>
> vtkReverseSense reverse = new vtkReverseSense();
> reverse.SetInputConnection(cf.GetOutputPort());
> reverse.ReverseCellsOn();
> reverse.ReverseNormalsOn();
> reverse.Update();
>
> vtkPolyDataMapper map = new vtkPolyDataMapper();
> map.SetInput(reverse.GetOutput());
> map.ScalarVisibilityOff();
> *
> Appreciate your help! :)
>
> Thanks,
> Melissa
>
> On Tue, Mar 6, 2012 at 8:22 PM, David Doria <daviddoria at gmail.com> wrote:
>
>> On Mon, Mar 5, 2012 at 11:05 PM, Melissa Goh <melissagoh27 at gmail.com>
>> wrote:
>> > Hi David,
>> >
>> > I am using vtkPolyData to create a 3d nucleus surface based on the set
>> of
>> > data points. The structure doesn't seems right. I am not sure of how to
>> > insert the points in correct order.
>> >
>> > Melissa
>>
>> You'll have to give us more information. *Why* does it not seem right?
>> What is wrong with the order you are using? Can you provide some
>> screenshots? Or the data? Or your code?
>>
>> David
>>
>
>
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-- 
Jothy
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