[vtkusers] adding a member method to a vtk class

[Andrew Maclean]

The best method is to derive from the class and add in your methods. Use
VTKLocal as the repository for your class if it is of general applicability
to other projects that you may be writing.

In this way if vtkImageReader changes, a simple recompilation of VTKLocal is
all that is necessary.

Works well for Windows and Linux. This also has the advantage that you can
write test routines and also put them into VTKLocal.



Andrew


 
-----Original Message-----
From: listboss [mailto:listboss at gmail.com] 
Sent: Thursday, 14 October 2004 03:01
To: baghdadi at phenogenomics.ca
Cc: vtkusers at vtk.org
Subject: Re: [vtkusers] adding a member method to a vtk class

Thanks Leila for the hints...

As I said, I am trying to avoid creating a complete new class and
introduce it to vtk.

Maybe it's better that I added my methods to vtkImageReader class
rather than keeping them in a seperate file/class.

I'll try your suggestions and keep the list posted about the outcome.

Thanks again
Hamid



On 13 Oct 2004 12:48:14 -0400, Leila Baghdadi <baghdadi at sickkids.ca> wrote:
> Hi Hamid
> 
> you should try modifying CMakeList.txt if you are adding new classes,
> 
> I think it is better to make your methods available in the class itself!
> 
> try looking at the directory
> VTK/Examples/Build/vtkLocal
> 
> you can place your class in the above directory, there is a
> CMakeLists.txt file in the above directory which is good enough to get
> you started,
> 
> HTH
> 
> Leila
> 
> 
> 
> On Wed, 2004-10-13 at 12:27, listboss wrote:
> > Hi
> >
> > I have added a member function to vtkImageReader class. This new
> > function needs methods which are available in myclass.cpp
> >
> > To compile my modified vtkImageReader class, first I tried to add
> > myclass.cpp to the CMakeList.txt file located in IO folder, but the
> > linker complained about a missing instantiator !!! :(
> >
> > I removed the file from CMakeList.txt and I opened VisualStudio .Net,
> > right clicked on IO and selected "Add New Class" and then I added
> > "myclass.cpp" to "IO".
> > It compiles fine but my question is "Is it right way of doing this ?"
> >
> > Am I gonna see problems because how I am doing this, or it's just fine ?
> > How should I do this if I want to compile VTK under Linux ?
> >
> > Thanks in advance
> > Hamid
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