Question

17. Write a non-member function called centroid(param) that takes a static array of points and the size of the array and return the centroid of the array of points. If there is no center, return the origins

Answer 1

Here is the completed code for this method. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

//implementation of the required non member function, paste this into your implementation file

Point centroid(const Point pts[], const size_t size){

                if(size<1){

                                //returning origin since there are no points or only one point exist

                                return Point(0,0,0);

                }

                double sumX=0, sumY=0, sumZ=0;

                //looping and summing up x, y and z values of each point separately

                for(size_t i=0;i<size;i++){

                                sumX+=pts[i].getX();

                                sumY+=pts[i].getY();

                                sumZ+=pts[i].getZ();

                }

                //finding average and creating a point with the average values, returning it

                double avgX=(double)sumX/size;

                double avgY=(double)sumY/size;

                double avgZ=(double)sumZ/size;

                Point centr(avgX, avgY, avgZ);

                return centr;

}