Using those fun identities I came up with this:
y = y * cos(angle) + x * sin(angle)
x = x * cos(angle) - y * sin(angle)
So I wrote this simple little program:
#include <iostream>
#include <math.h>
using namespace std;
int main()
{
float angle;
float x, y;
cout << "Enter an x y value: ";
cin >> x >> y;
cout << "Enter a rotation angle: ";
cin >> angle;
cout << "New x and y: " << (x * cos(angle) - y * sin(angle)) << " " << (y * cos(angle) + x * sin(angle)) << endl;
return 0;
}
aut viam inveniam aut faciam MoonStar Projects
