Scale a set of Points about a scale center using template c++

scalePoints.cpp

#include <iostream>
#include <vector>

using namespace std;

template <class PT, class Iterable, class xGetter, class yGetter, class LAMBDA>
static void scalePoints(Iterable& points, PT& center, float x, float y, xGetter gx, yGetter gy, LAMBDA cb) {
    int i = 0;
    for (auto& p : points) {
        float px = gx(p) - gx(center);
        float py = gy(p) - gy(center);
        px *= x;
        py *= y;
        px += gx(center);
        py += gy(center);
        cb(px, py, i++);
    }
}

template <class PT, class Iterable, class xGetter, class yGetter, class LAMBDA>
static void scalePointsUniformly(Iterable& points, PT center, float scale, xGetter gx, yGetter gy, LAMBDA cb) {
    scalePoints<PT, Iterable, xGetter, yGetter, LAMBDA>(points, center, scale, scale, gx, gy, cb);
}

struct Point {
    float x, y;
};

int main()
{
    cout<<"Hello World" << endl;
    
    std::vector<Point> points{{0, 0}, {0, 1}, {1, 1}, {1, 0}};
    scalePointsUniformly(
        points, 
        Point{0.5f, 0.5f}, 
        2.0f, 
        [](Point& p){return p.x;}, 
        [](Point& p){return p.y;},
        [](float x, float y, int i){
            cout << x << "," << y << std::endl;
        });

    return 0;
}