Function operator*

contents/IFS/code/cpp/IFS.cpp:12–12

Point operator+(Point lhs, Point rhs) { return {lhs.x + rhs.x, lhs.y + rhs.y}; }
Point operator*(double k, Point pt) { return {k * pt.x, k * pt.y}; }
Point operator*(Point pt, double k) { return k * pt; }

using PointVector = std::vector<Point>;