Function collision

utilities/olcUTIL_Geometry2D.h:2322–2331

	// optionally returns collision point and collision normal of ray and a line segment, if it collides
	template<typename T1, typename T2>
	inline std::optional<std::pair<olc::v_2d<T2>, olc::v_2d<T2>>> collision(const ray<T1>& q, const line<T2>& l)
	{
		const auto vIntersection = intersects(q, l);
		if (vIntersection.size() > 0)
		{
			return { {vIntersection[0], l.vector().perp().norm() * l.side(q.origin)} };
		}

		return std::nullopt;
	}

	// reflect(q,l)
	// optionally returns a ray reflected off a line segement if collision occurs