RandomSequence

VTKExamples/Cxx/SimpleOperations/RandomSequence

Description

This is the "new" (December, 2009) VTK way to produce random numbers. It is actually a random sequence generator.

Code

RandomSequence.cxx

#include <vtkMinimalStandardRandomSequence.h>
#include <vtkSmartPointer.h>

int main(int, char *[])
{
  //Create a random sequence generator.
  vtkSmartPointer<vtkMinimalStandardRandomSequence> sequence = 
      vtkSmartPointer<vtkMinimalStandardRandomSequence>::New();

  // initialize the sequence
  sequence->SetSeed(1);

  //Get 3 random numbers.
  double x = sequence->GetValue();
  sequence->Next();
  double y = sequence->GetValue();
  sequence->Next();
  double z = sequence->GetValue();

  // You can also use seq->GetRangeValue(-1.0,1.0); 
  //to set a range on the random values.

  //Output the resulting random numbersl
  std::cout << "x: " << x << " y: " << y << " z: " << z << std::endl;

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(RandomSequence)

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

add_executable(RandomSequence MACOSX_BUNDLE RandomSequence.cxx )

target_link_libraries(RandomSequence ${VTK_LIBRARIES})

Download and Build RandomSequence

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

cd RandomSequence/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:

./RandomSequence

WINDOWS USERS

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