[vtkusers] vtkCutter accuracy?

[Andreu, Jean-Philippe]

Hi all,

I tested vtkCutter on a simple planar rectangular patch (see below) with a
plane (plane->SetOrigin(100.0, 0.0, 0.0); plane->SetNormal(1.0, 0.0, 0.0);)
as implict function.

# vtk DataFile Version 3.0
vtk output
ASCII
DATASET POLYDATA
POINTS 4 float
50 200 70 150 200 70 150 200 90 
50 200 90 
POLYGONS 1 5
4 0 1 2 3 

CELL_DATA 1
POINT_DATA 4
SCALARS scalars float
LOOKUP_TABLE default
1 1 1 1 

As a result I get the following:

# vtk DataFile Version 3.0
vtk output
ASCII
DATASET POLYDATA
POINTS 2 float
100.5 200 90 100.5 200 70 
LINES 1 3
2 0 1 

CELL_DATA 1
POINT_DATA 2
SCALARS scalars float
LOOKUP_TABLE default
1 1 

I ask myself why I get 100.5 and not 100...

Any idea?

Thanx in advance for your help,

Jean-Philippe