[vtkusers] Problem with vtkPoint::GetPoint(vtk IdType)

[Amy Squillacote]

Hi Ashley,

What is m_Points supposed to contain?  You didn't include the code 
showing where the values in this instance of vtkPoints comes 
from.  Also, what are you getting back from your call to GetPoint?  I 
see that you're calling GetPoint(1); remember that VTK numbers from 
0, so if you're trying to compare against the first point in 
m_Points, you should call GetPoint(0).

- Amy

At 05:46 AM 4/26/2006, Ashley Sher wrote:

>Hi all,
>
>I tried to use GetPoint to retreive the coordinates of defined point,
>however, it's not working. It is not returning the actual point coordinate.
>
>Anyone met with this problem before?
>
>vtkPoints *pts = vtkPoints::New();
>pts->InsertPoint (0, 0, 3, 0);
>pts->InsertPoint (1, 1, 2, 0);
>pts->InsertPoint (2, 0, 2, 1);
>pts->InsertPoint (3, -1, 2, 0);
>pts->InsertPoint (4, 0, 2, -1);
>
>vtkPolyData *pd = vtkPolyData::New();
>pd->SetPoints(pts);
>
>vtkSphereSource *sphere = vtkSphereSource::New();
>vtkGlyph3D *spheres = vtkGlyph3D::New();
>spheres->SetInput(pd);
>spheres->SetSource(sphere->GetOutput());
>vtkPolyDataMapper *sphereMapper= vtkPolyDataMapper::New();
>sphereMapper->SetInputConnection(spheres->GetOutputPort());
>vtkActor *sphereActor = vtkActor::New();
>sphereActor->SetMapper(sphereMapper);
>
>iren->GetEventPosition(x, y);
>vtkPropPicker *picker = vtkPropPicker::New();
>picker->Pick(x,y,0,this->renderer);
>vtkActor *pickedActor = picker->GetActor();
>
>if (picker->GetPickPosition() == m_Points->GetPoint(1)) {
>                                             :
>                                             :
>}
>--
>View this message in context: 
>http://www.nabble.com/Problem-with-vtkPoint%3A%3AGetPoint%28vtk-IdType%29-t1510830.html#a4098328
>Sent from the VTK - Users forum at Nabble.com.
>
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