JPolyline3D.cc

Go to the documentation of this file.

#include <iostream>
#include <fstream>

#include "JGeometry3D/JPolyline3D.hh"
using namespace JGEOMETRY3D ;
using namespace std ;

inline void printPolyline(const JPolyline3D& pl) {
  for (int i=0; i<(int)pl.size()-1; ++i) {
    cout << "(" << pl[i] << ")-" ;
  }
  if (pl.size() > 0) {
    cout << "(" << pl.back() << ")";
  }
}

/**
 * \file
 * 
 * Example program for the JGEOMETRY::JPolyline3D class.
 * \author mjongen
 */
int main( int argc, char** argv ) {
  // create a polyline with three vertices
  JPolyline3D pl(3) ;

  // set vertex positions
  pl[0] = JGEOMETRY3D::JVector3D(1,0,0) ;
  pl[1] = JGEOMETRY3D::JVector3D(0,1,0) ;
  pl[2] = JGEOMETRY3D::JVector3D(0,0,1) ;

  // print vertex positions
  cout << "Initial polyline: " << endl ;
  printPolyline(pl) ;
  cout << endl ;

  // create rotation around the z-axis
  JRotation3Z R( 0.5*M_PI ) ;

  // rotate
  pl.rotate(R) ;
  cout << "After a 90 degree rotation around the z-axis:" << endl ;
  printPolyline(pl) ;
  cout << endl ;

  // rotate back
  pl.rotate_back(R) ;
  cout << "After rotating back:" << endl ;
  printPolyline(pl) ;
  cout << endl ;

  cout << endl ;
  cout << "Done!" << endl ;

  return 0 ;
}