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

[Melissa Goh]

Hi Jothy,

It works! It looks much better now. Thanks a lot!

On Tue, Mar 6, 2012 at 10:58 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:

> 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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