Method rotate

include/math.hpp:246–250

Rotates counterclockwise in radians. */

	}
	/** Rotates counterclockwise in radians. */
	Vec rotate(float angle) {
		float sin = std::sin(angle);
		float cos = std::cos(angle);
		return Vec(x * cos - y * sin, x * sin + y * cos);
	}
	/** Swaps the coordinates.
	Equivalent to a reflection across the `y = x` line.
	*/