[vtkusers] PointLocator question

[Gil Lecker at FEM++.com]

Hi All,

I am trying to locate a point in an UnstructuredGrid using 2 methods (not in
the same time) of vtkPointLocator :

1) FindClosestPointWithinRadius
Am I using a wrong type of variable for the returned distance (dist2) ?
the doc says:"vtkPointLocator::FindClosestPointWithinRadius  (  float
radius,
      const float    x[3],
      float &    dist2
     ) "

The tcl code I use:
# define the locator
 vtkPointLocator locator1
  locator1 SetTolerance $toler0
  locator1 SetDataSet usgModel
...
   set dist 0.0
   set found [locator_tmp FindClosestPointWithinRadius $radius $x $y $z
dist]

The error message is:
Object named: locator1, could not find requested method:
FindClosestPointWithinRadius
or the method was called with incorrect arguments.

while executing "locator1 FindClosestPointWithinRadius $radius $x $y $z
dist"

2) FindClosestPoint
   set found [locator1 FindClosestPoint $x $y $z]
This one works but I can not control the tolerance. No matter which value is
given to SetTolerance - the result is not changed as it should.

Thanks for your help,
Gil
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