[vtkusers] Draw point-cloud

[Thomas Obenaus]

Ok, I have found what I'm looking for.
Change the size of the points:
actor.GetProperty().SetPointSize(size); 


Thomas Obenaus wrote:
> 
> Thank you, it works fine!
> Do you know if there is a possibility to adjust the size of the points
> like using GL_POINT_SIZE in OpenGL?
> 
> Thanks,
> Thomas.
> 
> 
> SureshJ wrote:
>> 
>> Hey Thomas, in the past I've done something like this and its worked out
>> quite nicely for making large point clouds:
>> 
>>     vtkPoints* pts = vtkPoints::New();
>>     vtkCellArray* conn = vtkCellArray::New();
>>     vtkPolyData* poly = vtkPolyData::New();
>> 
>>     for (int i = 0; i < ptrToData->GetNumberOfTuples(); i++)
>>         pts->InsertNextPoint(ptrToData->GetComponent(i, 0),
>> ptrToData->GetComponent(i, 1), ptrToData->GetComponent(i, 2));
>> 
>>     for (int i = 0; i < pts->GetNumberOfPoints(); i++)
>>           conn->InsertNextCell(1, &i);
>> 
>>     poly->SetPoints(pts);
>>     poly->SetVerts(conn);
>> 
>>     vtkPolyDataMapper* pmap = vtkPolyDataMapper::New();
>>     pmap->SetInput(poly);
>> 
>> 
>> Cheers,
>> -SJ
>> 
>> 
>> 
>> On Thu, Sep 3, 2009 at 9:14 AM, Thomas Obenaus <
>> thomaso at eas.iis.fraunhofer.de> wrote:
>> 
>>>
>>> Hello,
>>>
>>> I have to visualize a point-cloud whose number of points varies from 10
>>> to
>>> 20000. At the Moment I use a sphere with low resolution for each point
>>> but
>>> the result is not satisfying (bad performance or ugly points). Is there
>>> a
>>> possibillity to draw points in VTK like using GL_POINTS in OpenGL?
>>>
>>> Thanks,
>>> Thomas.
>>> --
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>> 
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> 
> 

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