Function isRectIntersect

packages/common/utils/math.ts:6–13

(a: Rect, b: Rect)

 * 实现一个函数，判断
 */
export function isRectIntersect(a: Rect, b: Rect) {
  return (
    a.x < b.x + b.width &&
    a.x + a.width > b.x &&
    a.y < b.y + b.height &&
    a.y + a.height > b.y
  );
}

/**
 * extendARect