Calculate the similar polygon that it is concentric to the original polygon, using a scaling factor

calculateSimilarPolygon.cpp

#include "opencv2/opencv.hpp"
#include <vector>

using namespace cv;
using namespace std;

vector<Point> calculateSimilarPolygon(vector<Point>&pListPoints, Point center, float factor){
	vector<Point> spolygon;
	float v1, v2;
	int x, y;

	for(int i=0; i<pListPoints.size(); i++){

		//Initialization
		x=0; y=0;
		v1=0; v2=0;
				
		v1 = pListPoints.at(i).x - center.x;
		v2 = pListPoints.at(i).y - center.y;
		
		x = center.x + v1*factor;
		y = center.y + v2*factor;

		spolygon.push_back(Point(x,y));

	}

	return spolygon;
}