[Paraview] Writing a reader plugin for ParaView

[Rakesh Hammond]

Hi,

I have been playing with writing a reader for ParaView.  I followed the
Kitware instructions from here

http://www.kitware.com/products/html/WritingAParaViewReaderPlug-in.html

I managed to get the source to build and ended up with a .so file as
expected.  When I try and load in ParaView via

Tools-> ManagePlugins ->Load new, I get the following error

mydevelopment/pvplugin/cvsReader/build/libCSVImage.so: undefined symbol:
_ZTV17vtkCSVImageReader

If I do *nm libCSVImage.so | grep " _ZTV17vtkCSVImageReader", *the output is

U _ZTV17vtkCSVImageReader

Can some one please give me any pointers? I am on Ubuntu-12.04, gcc-4.4.7
and ParaView-3.14.1 on a 32bit machine.

I am also attaching the code I used to generate the .so files.


Regards,
Rakesh

CMAKE_MINIMUM_REQUIRED(VERSION 2.8)

IF(NOT ParaView_BINARY_DIR)
  FIND_PACKAGE(ParaView REQUIRED)
  INCLUDE(${PARAVIEW_USE_FILE})
ENDIF(NOT ParaView_BINARY_DIR)

IF(PARAVIEW_BUILD_QT_GUI)

  ADD_PARAVIEW_PLUGIN(CSVImage "1.0"
    SERVER_MANAGER_XML CSVImage.xml
    SERVER_MANAGER_SOURCES vtkCSVImageReader.cxx
    GUI_RESOURCE_FILES CSVImageGUI.xml
    )
ENDIF(PARAVIEW_BUILD_QT_GUI)


<ServerManagerConfiguration>
   <ProxyGroup name="sources"
      <SourceProxy
          name="CSVImageReader"
          class="vtkCSVImageReader"
          label="Image reader">
       <Documentation
          short_help="Read a PNG file."
          long_help="Read a PNG file into an image data.">
           The PNG reader reads PNG (Portable Network Graphics) files, and the output is a uniform rectilinear (image/volume) dataset. The default file extension is .png.      
       </Documentation>
       <StringVectorProperty
           name="FileName"
           animatable="0"
           command="SetFileName"
           <!-- command="SetFieldDelimiterCharacters">
           default_values=","
           number_of_elements="1"/>
        <FileListDomain name="files"/>
         <Documentation>
          This property specifies the file name for the PNG reader.
        </Documentation>
        </StringVectorProperty>
      </SourceProxy>
   </ProxyGroup>
</ServerManagerConfiguration>
<ParaViewReaders>
   <Reader
       name="CSVImageReader"
       extensions="csvimg"
       file_description="CSV image">
   </Reader>
</ParaViewReaders>

vtkCSVImageReader.cxx
Description: Binary data

#include<vtkInformation.h>
#include<vtkAlgorithm.h>
#include<vtkTable.h>
#include<vtkImageAlgorithm.h>
#include<vtkDelimitedTextReader.h>
#include<vtkInformationVector.h>
#include<vtkTable.h>
#include<vtkImageData.h>
#include<vtkPointData.h>
#include<vtkVariant.h>
#include<vtkPointData.h>
#include <vtkStreamingDemandDrivenPipeline.h>

class vtkCSVImageReader : public vtkImageAlgorithm
{
   
public:
    static vtkCSVImageReader* New();
    vtkTypeRevisionMacro(vtkCSVImageReader,vtkImageAlgorithm);
    void PrintSelf(ostream& os, vtkIndent indent);

    virtual void SetFileName(const char* fname);
    virtual const char* GetFileName();
    virtual void SetFieldDelimiterCharacters(const char* delim);
    virtual const char* GetFieldDelimiterCharacters();
    //vtkCxxRevisionMacro(vtkCSVImageReader, "$Revision$");

protected:
   vtkCSVImageReader();
   ~vtkCSVImageReader();

   int RequestInformation(
      vtkInformation*,
      vtkInformationVector**,
      vtkInformationVector*);

   int RequestData(
      vtkInformation*,
      vtkInformationVector**,
      vtkInformationVector*);

   vtkDelimitedTextReader* Reader;

private:
   vtkCSVImageReader(const vtkCSVImageReader&);
   void operator=(const vtkCSVImageReader&);
};

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