DistanceBetweenPoints
VTKExamples/Cxx/SimpleOperations/DistanceBetweenPoints
Description¶
This example finds the squared distance and the Euclidean distance between two 3D points.
Code¶
DistanceBetweenPoints.cxx
#include <vtkMath.h> int main(int, char *[]) { // Create two points. double p0[3] = {0.0, 0.0, 0.0}; double p1[3] = {1.0, 1.0, 1.0}; // Find the squared distance between the points. double squaredDistance = vtkMath::Distance2BetweenPoints(p0, p1); // Take the square root to get the Euclidean distance between the points. double distance = sqrt(squaredDistance); // Output the results. std::cout << "SquaredDistance = " << squaredDistance << std::endl; std::cout << "Distance = " << distance << std::endl; return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(DistanceBetweenPoints) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(DistanceBetweenPoints MACOSX_BUNDLE DistanceBetweenPoints.cxx) target_link_libraries(DistanceBetweenPoints ${VTK_LIBRARIES})
Download and Build DistanceBetweenPoints¶
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 Some tarballs may be missing or out-of-date.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 DistanceBetweenPoints and its CMakeLists.txt file. Once the tarball DistanceBetweenPoints.tar has been downloaded and extracted,
cd DistanceBetweenPoints/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:
./DistanceBetweenPoints
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.