[vtkusers] Find closest point on Mesh B from a point on Mesh A.

[Jim Peterson]

Ambar,
I guess I am confused too. Why not use 
vtkPointLocator.FindClosestPoint() with point data?

Jim

Ambar C wrote:
> Hello,
>
> I have two meshes A and B. For each point on A, I need to find the
> point on B that is closest to it. I looked up
> vtkCellLocator::FindClosestPoint, and have a few questions about it.
>
> 1. In the function prototype
>
> virtual void vtkCellLocator::FindClosestPoint	(	double 	x[3], double
> 	closestPoint[3], vtkGenericCell * 	cell, vtkIdType & 	cellId, int &
> 	subId, double & 	dist2	)
>
> - What is the subId field? I understand that it is populated if and
> when a closest point is found, but am not sure as to what information
> it ends up holding.
> - dist2 equals the distance of the closest point from the point x?
> - Which cell's ID does vtkCellId end up holding?
>
>
> In general, I'm confused about the usage of this function. Suggestions?
>
> Best,
> Ambar
>