Function vec2

src/engineMath.js:589–589

* Create a 2d vector, can take 1 or 2 scalar values * @param {number} [x] * @param {number} [y] - if y is undefined, x is used for both * @return {Vector2} * @example * let a = vec2(0, 1); // vector with coordinates (0, 1) * a = vec2(5); // set a to (5, 5) * b = vec2(); // set

(x=0, y)

 * b = vec2();         // set b to (0, 0)
 * @memberof Math */
function vec2(x=0, y) { return new Vector2(x, y ?? x); }

/**
 * Check if object is a valid Vector2