[vtkusers] Bug with vtkCutter?

[Prabhu Ramachandran]

hi,

	I have some 2d unstrucutured grid data.  I used a vtkCutter to
cut thru this data and display the data on a plane.  the cut plane
doesnt pick anything up.  I guess this is because the algorithm used
is to take each cell point and see if there is a sign change across
the implicit function (F(x,y,z) = c), if this is so the cell is taken
into consideration.  Now in this case each point of a cell will
evaluate to zero.  So is this a bug?  Shouldnt all cells that have
points that are exactly on the plane be considered for
contouring/scalar mapping?

	I know it is stupid to use a plane cutter for 2d data, but
this situation arises when I use the algorithm for a 3d problem and
use the same scripts for 2d data...

thanks,
prabhu