Variant

Repository source: Variant

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Question

If you have a question about this example, please use the VTK Discourse Forum

Code¶

Variant.cxx

#include <vtkVariant.h>

#include <iostream>
#include <string>

int main(int, char*[])
{
  double dVal = vtkVariant("2").ToDouble();
  std::cout << "dVal: " << dVal << std::endl;
  std::string strVal = vtkVariant(dVal).ToString();
  std::cout << "strVal: " << strVal << std::endl;
  return EXIT_SUCCESS;
}

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(Variant)

find_package(VTK COMPONENTS 
  CommonCore
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "Variant: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(Variant MACOSX_BUNDLE Variant.cxx )
  target_link_libraries(Variant PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS Variant
  MODULES ${VTK_LIBRARIES}
)

Download and Build Variant¶

Click here to download Variant and its CMakeLists.txt file. Once the tarball Variant.tar has been downloaded and extracted,

cd Variant/build

If VTK is installed:

cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./Variant

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.