gtsam/timing/timeRot3.cpp

/* ----------------------------------------------------------------------------

 * GTSAM Copyright 2010, Georgia Tech Research Corporation, 
 * Atlanta, Georgia 30332-0415
 * All Rights Reserved
 * Authors: Frank Dellaert, et al. (see THANKS for the full author list)

 * See LICENSE for the license information

 * -------------------------------------------------------------------------- */

/**
 * @file    timeRot3.cpp
 * @brief   time Rot3 functions
 * @author  Frank Dellaert
 */

#include <time.h>
#include <iostream>

#include <gtsam/geometry/Rot3.h>

using namespace std;
using namespace gtsam;

#define TEST(TITLE,STATEMENT) \
  cout << endl << TITLE << endl;\
  timeLog = clock();\
  for(int i = 0; i < n; i++)\
  STATEMENT;\
  timeLog2 = clock();\
  seconds = (double)(timeLog2-timeLog)/CLOCKS_PER_SEC;\
  cout << seconds << " seconds" << endl;\
  cout << ((double)n/seconds) << " calls/second" << endl;

int main()
{
  int n = 100000; long timeLog, timeLog2; double seconds;
  // create a random direction:
  double norm=sqrt(1.0+16.0+4.0);
  double x=1.0/norm, y=4.0/norm, z=2.0/norm;
  Vector v = (Vector(3) << x, y, z).finished();
  Rot3 R = Rot3::Rodrigues(0.1, 0.4, 0.2), R2 = R.retract(v);

  TEST("Rodriguez formula given axis angle", Rot3::AxisAngle(v,0.001))
  TEST("Rodriguez formula given canonical coordinates", Rot3::Rodrigues(v))
  TEST("Expmap", R*Rot3::Expmap(v))
  TEST("Retract", R.retract(v))
  TEST("Logmap", Rot3::Logmap(R.between(R2)))
  TEST("localCoordinates", R.localCoordinates(R2))
  TEST("Slow rotation matrix",Rot3::Rz(z)*Rot3::Ry(y)*Rot3::Rx(x))
  TEST("Fast Rotation matrix", Rot3::RzRyRx(x,y,z))

  return 0;
}