Class Vector2

MyGUIEngine/src/msdfgen/core/Vector2.hpp:13–100

* A 2-dimensional euclidean floating-point vector. * @author Viktor Chlumsky */

 * @author Viktor Chlumsky
 */
struct Vector2 {

    double x, y;

    inline Vector2(double val = 0) : x(val), y(val) { }

    inline Vector2(double x, double y) : x(x), y(y) { }

    /// Sets the vector to zero.
    inline void reset() {
        x = 0, y = 0;
    }

    /// Sets individual elements of the vector.
    inline void set(double newX, double newY) {
        x = newX, y = newY;
    }

    /// Returns the vector's squared length.
    inline double squaredLength() const {
        return x*x+y*y;
    }

    /// Returns the vector's length.
    inline double length() const {
        return sqrt(x*x+y*y);
    }

    /// Returns the normalized vector - one that has the same direction but unit length.
    inline Vector2 normalize(bool allowZero = false) const {
        if (double len = length())
            return Vector2(x/len, y/len);
        return Vector2(0, !allowZero);
    }

    /// Returns a vector with the same length that is orthogonal to this one.
    inline Vector2 getOrthogonal(bool polarity = true) const {
        return polarity ? Vector2(-y, x) : Vector2(y, -x);
    }

    /// Returns a vector with unit length that is orthogonal to this one.
    inline Vector2 getOrthonormal(bool polarity = true, bool allowZero = false) const {
        if (double len = length())
            return polarity ? Vector2(-y/len, x/len) : Vector2(y/len, -x/len);
        return polarity ? Vector2(0, !allowZero) : Vector2(0, -!allowZero);
    }

#ifdef MSDFGEN_USE_CPP11
    inline explicit operator bool() const {
        return x || y;
    }
#else
    inline operator const void *() const {
        return x || y ? this : NULL;
    }
#endif

    inline Vector2 &operator+=(const Vector2 other) {