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

[Jothybasu Selvaraj]

vtkSurfaceReconstructionFilter->SetSampleSpaing() and
->setNeighbourhoodSize()

Jothy

On Tue, Mar 6, 2012 at 2:56 PM, Melissa Goh <melissagoh27 at gmail.com> wrote:

> I read from a text file. The xyz values are obtained from a 3d image in
> ImageJ.
>
> How do I vary the neighborhood size and sample spacing?
>
> Melissa
>
>
> On Tue, Mar 6, 2012 at 10:52 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:
>
>> vtkSurfcaeReconstructionFilter docs say that the neighborhood size and
>> sample spacing should be set if desired. Can you try varying those?
>>
>> Jothy
>>
>>
>> On Tue, Mar 6, 2012 at 2:50 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:
>>
>>> 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
>>>
>>>
>>
>>
>> --
>> Jothy
>>
>>
>


-- 
Jothy
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