[scripting] Closest Location Queries Not Working with Closest Vertex Option?

[Julian Johnson <julian(at)exch.demon.co.uk>]

I'm trying to find the closest vertex on a mesh sphere to a Null but, 
even though I've set up the closest location query to do that I always 
get the closest point on the surface (not the position of the closest 
vertex). Have I just scripted this incorrectly or is there some other 
way to 'set' the acceleration cache to do this..?

Here's the simple code:

import win32com.client

def disp(ob):
   return win32com.client.Dispatch(ob)

oPlayControl = Application.ActiveProject.Properties("Play Control")
Rate = oPlayControl.Parameters("Rate").Value

oRoot = Application.ActiveSceneRoot
oSphere = oRoot.AddGeometry( "sphere", "MeshSurface" )
oNull = oRoot.AddNull()
oTarget =  oRoot.AddNull()

oVec = XSIMath.CreateVector3(5,.5,0)
oNull.LocalTranslation = oVec

oTrans = oSphere.Kinematics.Local.Transform
oSphere.ActivePrimitive.Geometry.SetupClosestLocationQueries(0,oTrans)

oPointLocator = 
oSphere.ActivePrimitive.Geometry.GetClosestLocations(oNull.Kinematics.Global.Transform.GetTranslationValues2())
data = oSphere.ActivePrimitive.Geometry.EvaluatePositions(oPointLocator)

Application.LogMessage(data[0])

oVec = XSIMath.CreateVector3(data[0][0],data[1][0],data[2][0])
oTarget.LocalTranslation = oVec


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