VTK/Examples/Cxx/Math/PerpendicularVector

From KitwarePublic
< VTK‎ | Examples‎ | Cxx
Revision as of 16:23, 9 December 2012 by Lorensen (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

PerpendicularVector.cxx

This example finds a vector perpendicular to the x axis (1,0,0). Since theta is specified as 0, the negative z axis (0, 0, -1) is returned.

#include <vtkSmartPointer.h>
#include <vtkMath.h>
 
int main(int, char *[])
{
  double x[3] = {1,0,0};
  double y[3];
  vtkMath::Perpendiculars(x, y, NULL, 0);
 
  std::cout << "y: " << y[0] << " " << y[1] << " " << y[2] << std::endl;
 
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
 
PROJECT(PerpendicularVector)
 
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
 
add_executable(PerpendicularVector MACOSX_BUNDLE PerpendicularVector.cxx)
 
if(VTK_LIBRARIES)
  target_link_libraries(PerpendicularVector ${VTK_LIBRARIES})
else()
  target_link_libraries(PerpendicularVector vtkHybrid vtkWidgets)
endif()

Download and Build PerpendicularVector

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

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

cd PerpendicularVector/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:

./PerpendicularVector

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.