export function noop() {};

// hypotenuse factor of isoscelese right triangle
export const sqrt2 = Math.sqrt(2);

// short width factor given the lenght of a hexagon's side
// (2*S gives long width)
export const sqrt3 = Math.sqrt(3);

export function throttleEvent(type, name, obj) {
	obj = obj || window;
	let running = false;

	let throttle = () => {
		if (!running) {
			running = true;

			requestAnimationFrame(() => {
				obj.dispatchEvent(new CustomEvent(name));
				running = false;
			});
		}
	}

	obj.addEventListener(type, throttle);
}

throttleEvent('resize', 'optimizedResize');

export function clone(obj) {
	return JSON.parse(JSON.stringify(obj));
}

export function extend(obj, ...sources) {
	sources.forEach(src => {
		for (let key in src) {
			if (src.hasOwnProperty(key)) obj[key] = src[key];
		}
	});

	return obj;
}

export function hypotenuse(a, b) {
	if (b == null) b = a;

	return Math.sqrt(a*a + b*b);
}

export function random(min, max) {
	if (max == null) {
		max = min;
		min = 0;
	}

	return min + Math.floor(Math.random() * (max - min + 1));
}