MathHelper.hpp

Go to the documentation of this file.

#ifndef MATHHELPER_HPP_
#define MATHHELPER_HPP_

#include "typedef.hpp"
#include <boost/math/special_functions/binomial.hpp>
#include <boost/random/mersenne_twister.hpp>
#include <boost/random/uniform_int.hpp>
#include <boost/random/uniform_real.hpp>
#include <boost/random/normal_distribution.hpp>
#include <boost/random/variate_generator.hpp>
#include <ros/ros.h>
#include <set>
#include <vector>
#include <geometry_msgs/Quaternion.h>

namespace next_best_view {
        class MathHelper {
        private:
                static boost::mt19937& getRandomnessGenerator();
        public:
                static SimpleSphereCoordinates convertC2S(const SimpleVector3 &cartesian);

                static void convertC2S(const SimpleVector3 &cartesian, SimpleSphereCoordinates &sphere);

                static SimpleVector3 convertS2C(const SimpleSphereCoordinates &sphere);

                static void convertS2C(const SimpleSphereCoordinates &sphere, SimpleVector3 &cartesian);

                static SimpleVector3 getVisualAxis(const SimpleQuaternion &orientation);

                static void getVisualAxis(const SimpleQuaternion &orientation, SimpleVector3 &resultAxis);

                static double getSignum(const double &value);

                static SimpleVector3 getProjection(const std::size_t &idx, const SimpleVector3 &X);

                static Precision getCosinus(const SimpleVector3 &X, const SimpleVector3 &Y);

        static Precision getAngle(const SimpleVector3 &X, const SimpleVector3 &Y);

                static Precision getMinimumAngleDifference(const Precision &firstAngle, const Precision &secondAngle);

                static int getRandomInteger(const int &min, const int &max);

                static Precision getRandomNumber(const Precision &mean, const Precision &standardDeviation);

                static SimpleVectorX getRandomVector(const SimpleVectorX &mean, const SimpleVectorX &standardDeviation);

                static SimpleQuaternion getRandomQuaternion();

                static SimpleQuaternion getQuaternionByAngles(const Precision &heading, const Precision &attitude, const Precision &bank);

                static SimpleQuaternionCollectionPtr getOrientationsOnUnitSphere(const int &numberOfPoints);

                static double radToDeg(double input);

                static double degToRad(double input);

                static double getDotProduct(SimpleVector3 v1, SimpleVector3 v2);

        static bool vector3Equal(SimpleVector3 v1, SimpleVector3 v2);

                template<typename Set> static void printSet(boost::shared_ptr<Set> &setPtr) {
                        std::cout << "\t{ ";
                        BOOST_FOREACH(typename Set::value_type value, *setPtr) {
                                std::cout << value << ", ";
                        }
                        std::cout << "}" << std::endl;
                }

                template<typename Set> static void printPowerSet(boost::shared_ptr<std::set<boost::shared_ptr<Set> > > &powerSetPtr) {
                        std::cout << "{ " << std::endl;
                        BOOST_FOREACH(boost::shared_ptr<Set> subSetPtr, *powerSetPtr) {
                                printSet(subSetPtr);
                        }
                        std::cout << "} " << std::endl;
                        std::cout << powerSetPtr->size() << " Items" << std::endl;
                }

                template<typename Set> static boost::shared_ptr<std::set<boost::shared_ptr<Set> > > powerSet(const boost::shared_ptr<Set> &setPtr) {
                        boost::shared_ptr<std::set<boost::shared_ptr<Set> > > powerSetPtr(new std::set<boost::shared_ptr<Set> >);

                        std::size_t value = 0;
                        assert(setPtr->size() <= 31);


                        std::size_t limit = (1 << setPtr->size());
                        for (std::size_t counter = 0; counter < limit; ++counter) {
                                boost::shared_ptr<Set> subSetPtr(new Set);
                                std::size_t idx = 0;
                                for (typename Set::iterator setIter = setPtr->begin(); setIter != setPtr->end();  ++setIter, ++idx) {
                                        if ( (value & (1 << idx)) != 0 ) {
                                                subSetPtr->insert(*setIter);
                                        }
                                }
                                powerSetPtr->insert(subSetPtr);

                                // the value
                                ++value;
                        }

                        return powerSetPtr;
                }


                template<typename PowerSet> static boost::shared_ptr<PowerSet> filterCardinalityPowerSet(const boost::shared_ptr<PowerSet> &powerSetPtr, const std::size_t min, const std::size_t max) {
                        boost::shared_ptr<PowerSet> resultPowerSetPtr(new PowerSet);

                        for (typename PowerSet::iterator powerSetIter = powerSetPtr->begin(); powerSetIter != powerSetPtr->end(); ++powerSetIter) {
                                if ((*powerSetIter)->size() < min || (*powerSetIter)->size() > max) {
                                        continue;
                                }

                                resultPowerSetPtr->insert(*powerSetIter);
                        }

                        return resultPowerSetPtr;
                }

                template<typename PowerSet> static boost::shared_ptr<PowerSet> filterCardinalityPowerSet(const boost::shared_ptr<PowerSet> &setPtr, const std::size_t min) {
                        return filterCardinalityPowerSet<PowerSet>(setPtr, min, setPtr->size());
                }
        };
}



#endif /* MATHHELPER_HPP_ */