Method expand

include/math.hpp:401–408

Returns the bounding box of the union of `this` and `b`. */

	}
	/** Returns the bounding box of the union of `this` and `b`. */
	Rect expand(Rect b) const {
		Rect r;
		r.pos.x = std::fmin(pos.x, b.pos.x);
		r.pos.y = std::fmin(pos.y, b.pos.y);
		r.size.x = std::fmax(pos.x + size.x, b.pos.x + b.size.x) - r.pos.x;
		r.size.y = std::fmax(pos.y + size.y, b.pos.y + b.size.y) - r.pos.y;
		return r;
	}
	/** Returns the intersection of `this` and `b`. */
	Rect intersect(Rect b) const {
		Rect r;