[vtkusers] Access point at a particular location

[Seth Gilchrist]

 Hi Rahul,
It seems that you want to provide x,y,z coordinates and get the index of
the point back. Once you have the index, you can use polydata's
"GetPointData" method to access the point data.

To do this, you can use the vtkKdTreePointLocator which as methods like
"FindClosestPoint", "FindNClosestPoints", and "FindPointsWithinRadius".
There are a few examples of how to use this class at
http://www.vtk.org/Wiki/VTK/Examples/Cxx#KD-Tree. There are other classes
like vtkPointLocator, vtkOctreePointLocator which you can look at too.

Cheers,
Seth

Seth Gilchrist, MASc, PhD Candidate
+---------------------------------------+
Orthopaedic and Injury Biomechanics Group
UBC Department of Mechanical Engineering
6th Floor-2635 Laurel Street
Vancouver, BC V5Z-1M9
+---------------------------------------+
seth at mech.ubc.ca
Fax 604-675-2576
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