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# VTK 9.0
if(NOT VTK_FOUND)
find_package(VTK 9 QUIET NAMES vtk COMPONENTS
FiltersExtraction
FiltersSources
FiltersTexture
IOExport
IOGeometry
IOPLY
InteractionStyle
RenderingCore
RenderingLOD
RenderingOpenGL2
NO_MODULE)
endif()
# VTK 6.x components
if(NOT VTK_FOUND)
find_package(VTK QUIET COMPONENTS vtkInteractionStyle vtkRenderingLOD vtkIOPLY vtkFiltersTexture vtkRenderingFreeType vtkIOExport NO_MODULE)
IF(VTK_FOUND)
IF(VTK_RENDERING_BACKEND) #in vtk 7, the rendering backend is exported as a var.
find_package(VTK QUIET COMPONENTS vtkRendering${VTK_RENDERING_BACKEND} vtkInteractionStyle vtkRenderingLOD vtkIOPLY vtkFiltersTexture vtkRenderingFreeType vtkIOExport vtkIOGeometry NO_MODULE)
ELSE(VTK_RENDERING_BACKEND)
find_package(VTK QUIET COMPONENTS vtkRenderingOpenGL vtkInteractionStyle vtkRenderingLOD vtkIOPLY vtkFiltersTexture vtkRenderingFreeType vtkIOExport NO_MODULE)
ENDIF(VTK_RENDERING_BACKEND)
ENDIF(VTK_FOUND)
endif()
# VTK 5.x components
if(NOT VTK_FOUND)
find_package(VTK QUIET COMPONENTS vtkCommon NO_MODULE)
endif()
if(NOT VTK_FOUND)
set(HAVE_VTK OFF)
message(STATUS "VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file")
return()
endif()
# Don't support earlier VTKs
if(VTK_VERSION VERSION_LESS "5.8.0")
message(STATUS "VTK support is disabled. VTK ver. 5.8.0 is minimum required, but found VTK ver. ${VTK_VERSION}")
return()
endif()
# Different Qt versions can't be linked together
if(HAVE_QT5 AND VTK_VERSION VERSION_LESS "6.0.0")
if(VTK_USE_QT)
message(STATUS "VTK support is disabled. Incompatible combination: OpenCV + Qt5 and VTK ver.${VTK_VERSION} + Qt4")
endif()
endif()
# Different Qt versions can't be linked together. VTK 6.0.0 doesn't provide a way to get Qt version it was linked with
if(HAVE_QT5 AND VTK_VERSION VERSION_EQUAL "6.0.0" AND NOT DEFINED FORCE_VTK)
message(STATUS "VTK support is disabled. Possible incompatible combination: OpenCV+Qt5, and VTK ver.${VTK_VERSION} with Qt4")
message(STATUS "If it is known that VTK was compiled without Qt4, please define '-DFORCE_VTK=TRUE' flag in CMake")
return()
endif()
# Different Qt versions can't be linked together
if(HAVE_QT AND VTK_VERSION VERSION_GREATER "6.0.0" AND NOT ${VTK_QT_VERSION} STREQUAL "")
if(HAVE_QT5 AND ${VTK_QT_VERSION} EQUAL "4")
message(STATUS "VTK support is disabled. Incompatible combination: OpenCV + Qt5 and VTK ver.${VTK_VERSION} + Qt4")
return()
endif()
if(NOT HAVE_QT5 AND ${VTK_QT_VERSION} EQUAL "5")
message(STATUS "VTK support is disabled. Incompatible combination: OpenCV + Qt4 and VTK ver.${VTK_VERSION} + Qt5")
return()
endif()
endif()
try_compile(VTK_COMPILE_STATUS
"${OpenCV_BINARY_DIR}"
"${OpenCV_SOURCE_DIR}/cmake/checks/vtk_test.cpp"
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:STRING=${VTK_INCLUDE_DIRS}"
LINK_LIBRARIES ${VTK_LIBRARIES}
OUTPUT_VARIABLE OUTPUT
)
if(NOT ${VTK_COMPILE_STATUS})
message(STATUS "VTK support is disabled. Compilation of the sample code has failed.")
return()
endif()
set(HAVE_VTK ON)
if (VTK_VERSION VERSION_LESS "8.90.0")
message(STATUS "Found VTK ${VTK_VERSION} (${VTK_USE_FILE})")
else()
message(STATUS "Found VTK ${VTK_VERSION}")
endif()
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