UniformRandomNumber
VTKExamples/Cxx/SimpleOperations/UniformRandomNumber
Description¶
This example generates 3 random numbers between 0 and 2 from a uniform distribution.
Code¶
UniformRandomNumber.cxx
#include <vtkMath.h> #include <time.h> int main(int, char *[]) { // Set the number of random numbers we wish to produce to 3. unsigned int numRand = 3; // Without this line, the random numbers will be the same every iteration. vtkMath::RandomSeed(time(NULL)); // Generate numRand random numbers from a uniform distribution between 0.0 and 2.0 for(unsigned int i = 0; i < numRand; i++) { double a = vtkMath::Random(0.0,2.0); std::cout << a << std::endl; } return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(UniformRandomNumber) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(UniformRandomNumber MACOSX_BUNDLE UniformRandomNumber.cxx) target_link_libraries(UniformRandomNumber ${VTK_LIBRARIES})
Download and Build UniformRandomNumber¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download UniformRandomNumber and its CMakeLists.txt file. Once the tarball UniformRandomNumber.tar has been downloaded and extracted,
cd UniformRandomNumber/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:
./UniformRandomNumber
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.