VTK/Examples/Cxx/Math/MatrixInverse

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MatrixInverse.cxx

#include <vtkSmartPointer.h>
#include <vtkMatrix3x3.h>
	
int main(int, char *[])
{
  vtkSmartPointer<vtkMatrix3x3> m = 
    vtkSmartPointer<vtkMatrix3x3>::New();
  
  m->SetElement(2,1,2.0); // Set element (0,0) to 1.0
  
  std::cout << *m << std::endl;
  
  m->Invert();
  
  std::cout << *m << std::endl;
  
  return EXIT_SUCCESS;
}

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CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(MatrixInverse)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(MatrixInverse MACOSX_BUNDLE MatrixInverse.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(MatrixInverse ${VTK_LIBRARIES})
else()
  target_link_libraries(MatrixInverse vtkHybrid vtkWidgets)
endif()

Download and Build MatrixInverse

Click here to download MatrixInverse. and its CMakeLists.txt file.

Once the tarball MatrixInverse.tar has been downloaded and extracted,

cd MatrixInverse/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:

./MatrixInverse

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