[vtkusers] Read unstructured data from ASCII file

[Mathieu Malaterre]

Mirelle Mellqvist wrote:
> Hi,
> 
> Im currently working on a school project where I want to read in 
> unstructureddata from a preprocessor app called Nastran. It´s in ASCII 
> format.
> 
> My first idea is to use vtkUnstructuredGridReader or does it only 
> support *.vtk format, and in that case how do I convert it. If that is 
> not possible I guess I`ll have to write a new reader on my own, any 
> suggestions or any good guidance would be appriciated!

Mirelle,

	That looks like an excellent school project, I hope you will be able to 
contribute it to VTK.

	Anyway as a start, you could have a look at:

http://www.vtk.org/doc/nightly/html/classvtkGAMBITReader.html

or (but more complex)

http://www.vtk.org/doc/nightly/html/classvtkAVSucdReader.html

You're class needs do derive from vtkUnstructuredGridSource, then all 
you need to do is fill the Execute method with the proper NASTRAN parser.

HTH
Mathieu