Paraview Make building Paraview plugin optional

If you develop a VTK filter for which you would like to make a Paraview plugin, it is nice to distribute it in a way that it can be used by users with only VTK as strictly a VTK filter, or by users with both VTK and Paraview as a VTK filter and a Paraview plugin. To do this, the directory structure should be as follows: <source lang="text"> ..../MyFilter/MyFilter.h ..../MyFilter/MyFilter.cxx ..../MyFilter/CMakeLists.txt ..../MyFilter/plugin/CMakeLists.txt ..../MyFilter/plugin/MyFilter.xml </source>

The MyFilter/CMakeLists.txt should look like <source lang="text"> cmake_minimum_required(VERSION 2.6)

   if(COMMAND cmake_policy)
     cmake_policy(SET CMP0003 NEW)
   endif(COMMAND cmake_policy)

PROJECT(vtkPointSetOutlierRemoval)

FIND_PACKAGE(VTK REQUIRED) INCLUDE(${VTK_USE_FILE})

SET(BUILD_PARAVIEW_PLUGIN OFF CACHE BOOL "Build Paraview plugin?")

if(BUILD_PARAVIEW_PLUGIN)

SUBDIRS(plugin)

endif(BUILD_PARAVIEW_PLUGIN)

ADD_EXECUTABLE(vtkMyFilter Demo.cxx vtkMyFilter.cxx) TARGET_LINK_LIBRARIES(vtkMyFilter vtkHybrid )

</source>

and the MyFilter/plugin/CMakeLists.txt should look like <source lang="text"> FIND_PACKAGE(ParaView REQUIRED) INCLUDE(${PARAVIEW_USE_FILE})

INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES} ../)

ADD_PARAVIEW_PLUGIN(MyFilter "1.0"

 SERVER_MANAGER_XML MyFilterxml

SERVER_MANAGER_SOURCES ../MyFilter.cxx )

</source>